AAT2506IWP-AQ-T1

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Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 23

Technical content

Features

• V IN Range: 2.7V to 5.5V
• V OUT Range: 0.6V to VIN
• 300mA LDO Current Output
• 400mV LDO Dropout Voltage at 300mA
• High Output Accuracy: ±1.5%
• Fast LDO Line / Load Transient Response
• 600mA, 97% Efficiency Step-Down Converter
• Fast Turn-On Time (100 μs Typical)
• 25 μA No Load Quiescent Current for Step-Down Converter
• Shutdown Current <1 μA
• Low R DS(ON) 0.4 Integrated Power Switches
• 100% Duty Cycle Low Dropout Operation
• 1MHz Switching Frequency
• 100 μs Typical Soft Start
• Over-Temperature Protection
• Current Limit Protection
• Available in TDFN33-12 Package
• -40°C to +85°C Temperature Range

Applications

• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor/DSP Core/IO Power
• PDAs and Handheld Computers
• Portable Media Players Typical Application 4.7μH 22μF 2.2μF 10μF 10nF PGND 1 LX 2 VP3 VCC 4 ENLDO9 EN 10 FB 11 SGND 12 VLDO5 OUT6 GND8 BYP7 AAT2506 L1 Sumida CDRH3D16-4R7 C1 Murata GRM219R61A475KE19 C3 Murata GRM21BR60J106KE19 VIN = 2.7V to 5.5V 3.3V at 300mA AAT2506 Step-Down Converter Efficiency (VOUT = 2.5V; L = 10μμH) Output Current (mA) Efficiency (%) 100 0.1 1 10 100 1000 VIN = 3.3V

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Pin Descriptions Pin # Symbol Function 1 PGND Step-down converter power ground return pin. Connect to the output and input capacitor return. See sec- tion on PCB layout guidelines and evaluation board layout diagram. 2 LX Power switching node. Output switching node that connects to the output inductor. 3 VP Step-down converter power stage supply voltage. Must be closely decoupled to PGND. 4 VCC Step-down converter bias supply. Connect to VP. 5 VLDO LDO input voltage; should be decoupled with 1 μF or greater capacitor. 6 OUT 300mA LDO output pin. A 2.2 μF or greater output low-ESR ceramic capacitor is required for stability. 7 BYP Bypass capacitor for the LDO. To improve AC ripple rejection, connect a 10nF capacitor to GND. This will also provide a soft-start function. 8 GND LDO ground connection pin. 9 ENLDO Enable pin for LDO. When connected low, LDO is disabled and consumes less than 1 μA of current. 10 EN Step-down converter enable. When connected low, LDO is disabled and consumes less than 1 μA. 11 FB Step-down converter feedback input pin. For fi xed output voltage versions, this pin is connected to the converter output, forcing the converter to regulate to the specifi c voltage. For adjustable output versions, an external resistive divider ties to this point and programs the output voltage to the desired value.

12 SGND

Step-down converter signal ground. For external feedback, return the feedback resistive divider to this ground. For internal fi xed version, tie to the point of load return. See section on PCB layout guidelines and evaluation board layout diagram. EP Exposed paddle (bottom). Use properly sized vias for thermal coupling to the ground plane. See section on PCB layout guidelines. Pin Configuration TDFN33-12 (TopView) PGND LX VP VCC VLDO OUT SGND FB EN ENLDO GND BYP

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at co nditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on an FR4 board with exposed paddle connected to ground plane. Absolute Maximum Ratings1 Symbol Description Value Units VP, VLDO Input Voltages to GND 6.0 V VLX LX to GND -0.3 to VP + 0.3 V VFB FB to GND -0.3 to VP + 0.3 V VEN EN to GND -0.3 to 6.0 V TJ Operating Junction Temperature Range -40 to 150 °C TLEAD Maximum Soldering Temperature (at leads, 10 sec) 300 °C Thermal Information Symbol Description Value Units PD Maximum Power Dissipation 2 W JA Thermal Resistance2 50 °C/W

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. The AAT2506 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assu red by design, characterization, and correla- tion with statistical process controls. 2. To calculate the minimum LDO input voltage, use the following equation: V IN(MIN) = VOUT(MAX) + VDO(MAX), as long as VIN ≥ 2.5V. 3. For VOUT <2.1V, VDO = 2.5 - VOUT. 4. VDO is defined as VIN - VOUT when VOUT is 98% of nominal. Electrical Characteristics1 2.2μF, CIN = 1μF, TA = -40°C to +85°C, unless otherwise noted. Typical values are T A = 25°C. Symbol Description Conditions Min Typ Max Units LDO VOUT Output Voltage Tolerance I OUT = 1mA to 300mA TA = 25°C -1.5 1.5 TA = -40°C to 85°C -2.5 2.5 % VIN Input Voltage VOUT +VDO2 5.5 V VDO Dropout Voltage3, 4 IOUT = 300mA 400 600 mV VOUT/ VOUT*VIN Line Regulation V IN = VOUT + 1V to 5V 0.09 %/V VOUT(Line) Dynamic Line Regulation IOUT = 300mA, VIN = VOUT + 1V to VOUT + 2V, TR/TF = 2μs 2.5 mV VOUT(Load) Dynamic Load Regulation I OUT = 1mA to 300mA, TR <5μs6 0 m V IOUT Output Current V OUT > 1.3V 300 mA ISC Short-Circuit Current V OUT < 0.4V 600 mA IQLDO LDO Quiescent Current V IN = 5V, No Load, ENLDO = VIN 70 125 μA ISHDN Shutdown Current V IN = 5V; ENLDO = GND, EN = SGND = PGND 1.0 μA PSRR Power Supply Rejection Ratio I OUT = 10mA, CBYP = 10nF 1kHz 67 dB10kHz 47 1MHz 45 TSD Over-Temperature Shutdown Threshold 145 °C THYS Over-Temperature Shutdown Hysteresis 12 °C eN Output Noise e NBW = 300Hz to 50kHz 50 μVRMS TC Output Voltage Temperature Coeffi cient 22 ppm/°C

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. The AAT2506 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assu red by design, characterization, and correla- tion with statistical process controls. Electrical Characteristics1 Typical values are TA = 25°C, VIN = VCC = Vp = 3.6V. Symbol Description Conditions Min Typ Max Units Buck Converter VIN Input Voltage 2.7 5.5 V VUVLO UVLO Threshold VIN Rising 2.6 V Hysteresis 100 mV V IN Falling 1.8 V VOUT Output Voltage Tolerance I OUT = 0 to 400mA, VIN = 2.7V to 5.5V -3.5 +3.5 % VOUT Output Voltage Range 0.6 V IN V IQBUCK Step-Down Converter Quiescent Current ENLDO = GND, No Load, 0.6V Adjustable Model 25 50 μA ISHDN Shutdown Current EN = SGND = PGND, ENLDO = GND 1.0 μA ILIM P-Channel Current Limit 600 mA RDS(ON)H High Side Switch On Resistance 0.45  RDS(ON)L Low Side Switch On Resistance 0.40  ILXLK LX Leakage Current V IN = 5.5V, VLX = 0 - VIN EN = SGND = PGND 1.0 μA ILXLK, R LX Reverse Leakage Current ( fi xed) V IN = Open, VLX = 5.5V, EN = SGND = PGND 1.0 μA VLinereg Line Regulation V IN = 2.7V to 5.5V 0.5 %/V VFB FB Threshold Voltage Accuracy 0.6V Output, No Load, T A = 25°C 591 600 609 mV IFB FB Leakage Current 0.6V Output 0.2 μA FOSC Oscillator Frequency T A = 25°C 0.7 1.0 1.5 MHz TS Start-Up Time From Enable to Output Regulation 100 μs TSD Over-Temperature Shutdown Threshold 140 °C THYS Over-Temperature Shutdown Hysteresis 15 °C Logic Signals VEN(L) Enable Threshold Low 0.6 V VEN(H) Enable Threshold High 1.5 V IEN(H) Leakage Current 1.0 1.0 μA

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. LDO Dropout Voltage vs. Temperature (EN = GND; ENLDO = VIN) 120 180 240 300 360 420 480 540 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (°C) Dropout Voltage (mV) IL = 300mA IL = 150mA IL = 100mA IL = 50mA LDO Dropout Characteristics (EN = GND; ENLDO = VIN) 2.00 2.20 2.40 2.60 2.80 3.00 3.20 Input Voltage (V) Output Voltage (V) IOUT = 300mA IOUT = 150mA IOUT = 100mA IOUT = 50mAIOUT = 10mA IOUT = 0mA LDO Dropout Voltage vs. Output Current (EN = GND; ENLDO = VIN) 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 Output Current (mA) Dropout Voltage (mV) 85°C 25°C -40°C LDO Ground Current vs. Input Voltage (EN = GND; ENLDO = VIN) 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 2 2.5 3 3.5 4.5 45 Input Voltage (V) Ground Current (μA) IOUT=0mA IOUT=10mA IOUT=50mA IOUT=150mA IOUT=300mA LDO Output Voltage Error vs. Temperature (EN = GND; ENLDO = VIN) 0.5 0.25 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Output Voltage Error (%) LDO Initial Power-Up Response Time (CBYP = 10nF; EN = GND; ENLDO = VIN) 400μμs/div VENLDO (5V/div) VOUT (1V/div)

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C, VIN = VLDO = VCC = VP. LDO Turn-Off Response Time (CBYP = 10nF; EN = GND; ENLDO = VIN) 50μs/div VENLDO (5V/div) VOUT (1V/div) LDO Turn-On Time From Enable (VIN present) (CBYP = 10nF; EN = GND; ENLDO = VIN) 5μμs/div VIN = 4VVOUT = 1V/div VENLDO = 5V/div LDO Line Transient Response (CBYP = 10nF; EN = GND; ENLDO = VIN) 2.98 2.99 3.00 3.01 3.02 3.03 3.04 100μs/div Input Voltage (V) Output Voltage (V) VIN VOUT LDO Load Transient Response (CBYP = 10nF; EN = GND; ENLDO = VIN) 2.60 2.65 2.70 2.75 2.80 2.85 2.90 100μS/div Output Voltage (V) -100 100 200 300 400 500 Output Current (mA)VOUT IOUT LDO Load Transient Response 300mA (CBYP = 10nF; EN = GND; ENLDO = VIN) 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 10μμs/div Output Voltage (V) -100 100 200 300 400 500 600 700 800 Output Current (mA) VOUT IOUT LDO Self Noise (EN = GND; ENLDO = VIN) 0.001 0.01 0.1 0.01 0.1 1 10 100 1000 10000 Frequency (kHz) Noise Amplitude (μV/rtHz) Band Power: 300Hz to 50kHz = 44.6μVrms 100Hz to 100kHz = 56.3μVrms

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Over-Current Protection (EN = GND; ENLDO = VIN) Time (50ms/div) Output Current (mA) -200 200 400 600 800 1000 1200 LDO ENLDO vs. VIN 1.050 1.075 1.100 1.125 1.150 1.175 1.200 1.225 1.250 Input Voltage (V) VIH VIL Step-Down Converter Efficiency vs. Load (VOUT = 3.3V; L = 10μμH; ENLDO = GND) Output Current (mA) Efficiency (%) 100 0.1 1 10 100 1000 VIN = 3.9V VIN = 4.2V Step-Down Converter DC Regulation (VOUT = 3.3V; L = 10μμH; ENLDO = GND) Output Current (mA) Output Error (%) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0.1 1 10 100 1000 VIN = 4.2V VIN = 3.9V Step-Down Converter Efficiency vs. Load (VOUT = 2.5V; L = 10μμH; ENLDO = GND) Output Current (mA) Efficiency (%) 100 0.1 1 10 100 1000 VIN = 3.0V VIN = 3.6V VIN = 3.3V Step-Down Converter DC Regulation (VOUT = 2.5V; L = 10μμH; ENLDO = GND) Output Current (mA) Output Error (%) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0.1 1 10 100 1000 VIN = 3.6V VIN = 3.3V VIN = 3.0V

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Step-Down Converter Efficiency vs. Load (VOUT = 1.5V; L = 4.7μμH; ENLDO = GND) Output Current (mA) Efficiency (%) 100 0.1 1 10 100 1000 VIN = 3.6V VIN = 4.2V VIN = 2.7V Step-Down Converter DC Regulation (VOUT = 1.5V; L = 4.7μμH; ENLDO = GND) Output Current (mA) Output Error (%) -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0.1 1 10 100 1000 VIN = 3.6V VIN = 4.2V VIN = 2.7V Step-Down Converter Frequency vs. Input Voltage (VOUT = 1.8V; EN = VIN; ENLDO = GND) Input Voltage (V) Frequency Variation (%) -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 Step-Down Converter Output Voltage Error vs. Temperature (VIN = 3.6V; VO = 1.5V; EN = VIN; ENLDO = GND) Temperature (°°C) Output Error (%) -2.0 -1.0 0.0 1.0 2.0 -40 -20 0 20 40 60 80 100 Step-Down Converter Switching Frequency vs. Temperature (VIN = 3.6V; VO = 1.5V; EN = VIN; ENLDO = GND) Temperature (°°C) Frequency Variation (%) -0.20 -0.10 0.00 0.10 0.20 -40 -20 0 20 40 60 80 100 Step-Down Converter Input Current vs. Input Voltage (VO = 1.8V; EN = VIN; ENLDO = GND) Input Voltage (V) Input Current (μμA) 85°C 25°C -40°C

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Step-Down Converter P-Channel RDS(ON) vs. Input Voltage (EN = VIN; ENLDO = GND) Input Voltage (V) RDS(ON) (mΩΩ) 300 350 400 450 500 550 600 650 700 750 25°C 120°C 100°C 85°C Step-Down Converter N-Channel RDS(ON) vs. Input Voltage (EN = VIN; ENLDO = GND) Input Voltage (V) RDS(ON) (mΩΩ) 300 350 400 450 500 550 600 650 700 750 25°C 120°C 100°C 85°C Step-Down Converter Load Transient Response (30mA - 300mA; VIN = 3.6V; VOUT = 1.5V; C1 = 22μμF; ENLDO = GND) Output Voltage (top) (V) Load and Inductor Current (200mA/div) (bottom) Time (25μs/div) 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 -0.1 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 30mA 300mA Step-Down Converter Load Transient Response (30mA - 300mA; VIN = 3.6V; VOUT = 2.5V; C1 = 22μμF; ENLDO = GND) Output Voltage (top) (V) Load and Inductor Current (200mA/div) (bottom) Time (25μs/div) 2.05 2.15 2.25 2.35 2.45 2.55 2.65 -0.1 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 30mA 300mA Step-Down Converter Line Transient (VOUT = 1.8V @ 400mA; EN = VIN; ENLDO = GND) Output Voltage (top) (V) Input Voltage (bottom) (V) Time (25μμs/div) 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 Step-Down Converter Line Regulation (VOUT = 1.5V; ENLDO = GND) Input Voltage (V) Accuracy (%) -0.5 0.5 1.5 2.5 3 3.5 4 4.5 5 5.5 6 IOUT = 600mA IOUT = 100mA IOUT = 10mA

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Typical Characteristics Unless otherwise noted, VIN = 5V, TA = 25°C. Step-Down Converter Soft Start (VIN = 3.6V; VOUT = 1.5V; L = 4.7μμH; ENLDO = GND) Enable and Output Voltage (top) (V) Inductor Current (bottom) (A) Time (50μs/div) -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Step-Down Converter Output Ripple (VIN = 3.6V; VOUT = 1.8V; 400mA; EN = VIN; ENLDO = GND) Output Voltage (AC Coupled) (top) (mV) Inductor Current (bottom) (A) Time (250ns/div) -120 -100 -80 -60 -40 -20 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Functional Block Diagram EN LX Error Amp. Logic DH DL PGND VP FB GND Voltage Reference Voltage Reference Error Amp. OUT Control Logic VLDO Fast Start ControlENLDO BYP SGND VCC See Note Over-Current Protection Note: Internal resistor divider included for ≥1.2V versions. For low voltage versions, the feedback pin is tied directly to the error amplifier input. Functional Description The AAT2506 is a high performance power management IC comprised of a buck converter and a linear regulator. The buck converter is a high efficiency converter capable of delivering up to 600mA. Designed to operate at 1.0MHz, the converter requires only three external com- ponents (C IN, COUT, and L X) and is stable with a ceramic output capacitor. The linear regulator delivers 300mA and is also stable with ceramic capacitors. Linear Regulator The advanced circuit design of the linear regulator has been specifically optimized for very fast start-up and shutdown timing. This proprietary CMOS LDO has also been tailored for superior transient response character- istics. These traits are particularly important for applica- tions that require fast power supply timing. The high-speed turn-on capability is enabled through implementation of a fast-start control circuit, which accelerates the power-up behavior of fundamental con- trol and feedback circuits within the LDO regulator. Fast turn-off time response is achieved by an active output pull-down circuit, which is enabled when the LDO regula- tor is placed in shutdown mode. This active fast shut- down circuit has no adverse effect on normal device operation. The LDO regulator output has been specifi- cally optimized to function with low-cost, low-ESR ceramic capacitors; however, the design will allow for operation over a wide range of capacitor types. A bypass pin has been provided to allow the addition of an optional voltage reference bypass capacitor to reduce output self noise and increase power supply ripple rejec- tion. Device self noise and PSRR will be improved by the addition of a small ceramic capacitor in this pin. However, increased values of C BYPASS may slow down the LDO regu-

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 lator turn-on time. The regulator comes with complete short-circuit and thermal protection. The combination of these two internal protection circuits gives a comprehen- sive safety system to guard against extreme adverse operating conditions. The regulator features an enable/disable function. This pin (ENLDO) is active high and is compatible with CMOS logic. To assure the LDO regulator will switch on, the ENLDO turn-on control level must be greater than 1.5V. The LDO regulator will go into the disable shutdown mode when the voltage on the EN pin falls below 0.6V. If the enable function is not needed in a specific applica- tion, it may be tied to V IN to keep the LDO regulator in a continuously on state. When the regulator is in shutdown mode, an internal 1.5k resistor is connected between OUT and GND. This is intended to discharge C OUT when the LDO regulator is disabled. The internal 1.5K  resistor has no adverse impact on device turn-on time. Step-Down Converter The AAT2506 buck is a constant frequency peak current mode PWM converter with internal compensation. It is designed to operate with an input voltage range of 2.7V to 5.5V. The output voltage ranges from 0.6V to the input voltage. The 0.6V fixed model shown in Figure 1 is also the adjustable version and is externally program- mable with a resistive divider, as shown in Figure 2. The converter MOSFET power stage is sized for 600mA load capability with up to 97% efficiency. Light load efficiency exceeds 80% at a 500μA load. Soft Start The AAT2506 soft-start control prevents output voltage overshoot and limits inrush current when either the input power or the enable input is applied. When pulled low, the enable input forces the converter into a low-power, non- switching state with a bias current of less than 1μA. Low Dropout Operation For conditions where the input voltage drops to the out- put voltage level, the converter duty cycle increases to 100%. As 100% duty cycle is approached, the minimum off-time initially forces the high side on-time to exceed the 1MHz clock cycle and reduce the effective switching frequency. Once the input drops below the level where the output can be regulated, the high side P-channel MOSFET is turned on continuously for 100% duty cycle. At 100% duty cycle, the output voltage tracks the input voltage minus the IR drop of the high side P-channel MOSFET R DS(ON). Low Supply The under-voltage lockout (UVLO) guarantees sufficient V IN bias and proper operation of all internal circuitry prior to activation. Fault Protection For overload conditions, the peak inductor current is lim- ited. Thermal protection disables switching when the internal dissipation or ambient temperature becomes excessive. The junction over-temperature threshold is 140°C with 15°C of hysteresis. 22μF VOUTBUCK VIN 4.7μF 10μF 10nF VOUTLDO PGND LX VP VCC ENLDO EN FB SGND VLDO OUT GND BYP AAT2506 22μF VIN 59k R24.7μF 10μF 10nF VOUTLDO VOUTBUCK 100pF C8PGND LX VP VCC ENLDO EN FB SGND VLDO OUT GND BYP AAT2506 Figure 1: AAT2506 Fixed Output. Figure 2: AAT2506 with Adjustable Step-Down Output and Enhanced Transient Response.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Applications Information Linear Regulator Input and Output Capacitors An input capacitor is not required for basic operation of the linear regulator. However, if the AAT2506 is physically located more than three centimeters from an input power source, a C IN capacitor will be needed for stable operation. Typically, a 1μF or larger capacitor is recommended for CIN in most applications. CIN should be located as closely to the device VIN pin as practically possible. An input capacitor greater than 1 μF will offer superior input line transient response and maximize power supply ripple rejection. Ceramic, tantalum, or aluminum elec- trolytic capacitors may be selected for C IN. There is no specific capacitor ESR requirement for C IN. However, for 300mA LDO regulator output operation, ceramic capaci- tors are recommended for C IN due to their inherent capa- bility over tantalum capacitors to withstand input current surges from low impedance sources such as batteries in portable devices. For proper load voltage regulation and operational stabil- ity, a capacitor is required between OUT and GND. The C OUT capacitor connection to the LDO regulator ground pin should be made as directly as practically possible for maximum device performance. Since the regulator has been designed to function with very low ESR capacitors, ceramic capacitors in the 1.0 μF to 10 μF range are rec- ommended for best performance. Applications utilizing the exceptionally low output noise and optimum power supply ripple rejection should use 2.2 μF or greater for C OUT. In low output current applications, where output load is less than 10mA, the minimum value for C OUT can be as low as 0.47μF. Equivalent Series Resistance ESR is a very important characteristic to consider when selecting a capacitor. ESR is the internal series resistance associated with a capacitor that includes lead resistance, internal connections, size and area, material composi- tion, and ambient temperature. Typically, capacitor ESR is measured in milliohms for ceramic capacitors and can range to more than several ohms for tantalum or alumi- num electrolytic capacitors. Bypass Capacitor and Low Noise Applications A bypass capacitor pin is provided to enhance the low noise characteristics of the LDO. The bypass capacitor is not necessary for operation; however, for best device performance, a small ceramic capacitor in the range of 470pF to 10nF should be placed between the bypass pin (BYP) and the device ground pin (GND). To practically realize the highest power supply ripple rejection and low- est output noise performance, it is critical that the capac- itor connection between the BYP pin and GND pin be direct and PCB traces should be as short as possible. DC leakage on this pin can affect the LDO regulator out- put noise and voltage regulation performance. For this reason, the use of a low leakage, high quality ceramic (NPO or C0G type) or film capacitor is highly recom- mended. Step-Down Converter Inductor Selection The step-down converter uses peak current mode control with slope compensation to maintain stability for duty cycles greater than 50%. The output inductor value must be selected so the inductor current down slope meets the internal slope compensation requirements. The internal slope compensation for the adjustable and low-voltage fixed versions of the AAT2506 is 0.24A/μsec. This equates to a slope compensation that is 75% of the inductor cur- rent down slope for a 1.5V output and 4.7μH inductor. 0.75 ⋅ VO m = = = 0.24 L 0.75 ⋅ 1.5V 4.7μH A μsec This is the internal slope compensation for the adjust- able (0.6V) version or low-voltage fixed versions. When externally programming the 0.6V version to 2.5V, the calculated inductance is 7.5μH. 0.75 ⋅ VO L = = ≈ 3 ⋅ VO = 3 ⋅ 2.5V = 7.5μH m 0.75 ⋅ VO 0.24A μsec A μsec A A μsec In this case, a standard 10μH value is selected. For high-voltage fixed versions (2.5V and above), m = 0.48A/μsec. Table 1 displays inductor values for the AAT2506 fixed and adjustable options.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Confi guration Output Voltage Inductor Slope Compensation 0.6V Adjustable With External Resistive Divider 0.6V to 2.0V 4.7μH 0.24A/ μsec 2.5V to VIN 10μH 0.24A/ μsec Fixed Output 0.6V to 2.0V 4.7μH 0.24A/ μsec 2.5V to VIN 4.7μH 0.48A/ μsec Table 1: Inductor Values. Manufacturer’s specifications list both the inductor DC current rating, which is a thermal limitation, and the peak current rating, which is determined by the satura- tion characteristics. The inductor should not show any appreciable saturation under normal load conditions. Some inductors may meet the peak and average current ratings yet result in excessive losses due to a high DCR. Always consider the losses associated with the DCR and its effect on the total converter efficiency when selecting an inductor. The 4.7 μH CDRH3D16 series inductor selected from Sumida has a 105m DCR and a 900mA DC current rat- ing. At full load, the inductor DC loss is 17mW which gives a 2.8% loss in efficiency for a 400mA, 1.5V output. Input Capacitor Select a 4.7μF to 10μF X7R or X5R ceramic capacitor for the input. To estimate the required input capacitor size, determine the acceptable input ripple level (V PP) and solve for C. The calculated value varies with input volt- age and is a maximum when V IN is double the output voltage. VOBUCK VIN CIN = VOBUCK VIN VPP IOBUCK ⎛⎞ · 1 - = for VIN = 2 × VOBUCK⎝⎠ VOBUCK VIN VOBUCK VIN CIN(MIN) = 1 VPP IOBUCK Always examine the ceramic capacitor DC voltage coeffi- cient characteristics when selecting the proper value. For example, the capacitance of a 10 μF, 6.3V, X5R ceramic capacitor with 5.0V DC applied is actually about 6μF. The maximum input capacitor RMS current is: VOBUCK VIN VOBUCK VIN The input capacitor RMS ripple current varies with the input and output voltage and will always be less than or equal to half of the total DC load current. VOBUCK VIN VOBUCK VIN for VIN = 2 x VOBUCK IOBUCK RMS(MAX)I 2= The term VOBUCK VIN VOBUCK VIN appears in both the input volt- age ripple and input capacitor RMS current equations and is a maximum when V OBUCK is twice V IN. This is why the input voltage ripple and the input capacitor RMS cur- rent ripple are a maximum at 50% duty cycle. The input capacitor provides a low impedance loop for the edges of pulsed current drawn by the AAT2500. Low ESR/ESL X7R and X5R ceramic capacitors are ideal for this function. To minimize stray inductance, the capacitor should be placed as closely as possible to the IC. This keeps the high frequency content of the input current localized, minimizing EMI and input voltage ripple. The proper placement of the input capacitor (C2) can be seen in the evaluation board layout in Figure 3. A laboratory test set-up typically consists of two long wires running from the bench power supply to the evalu- ation board input voltage pins. The inductance of these wires, along with the low-ESR ceramic input capacitor, can create a high Q network that may affect converter performance. This problem often becomes apparent in the form of excessive ringing in the output voltage dur- ing load transients. Errors in the loop phase and gain measurements can also result.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Since the inductance of a short PCB trace feeding the input voltage is significantly lower than the power leads from the bench power supply, most applications do not exhibit this problem. In applications where the input power source lead induc- tance cannot be reduced to a level that does not affect the converter performance, a high ESR tantalum or alu- minum electrolytic should be placed in parallel with the low ESR, ESL bypass ceramic. This dampens the high Q network and stabilizes the system. Output Capacitor The output capacitor limits the output ripple and pro- vides holdup during large load transitions. A 22μF X5R or X7R ceramic capacitor typically provides sufficient bulk capacitance to stabilize the output during large load transitions and has the ESR and ESL characteristics nec- essary for low output ripple. The output voltage droop due to a load transient is dominated by the capacitance of the ceramic output capacitor. During a step increase in load current, the ceramic output capacitor alone supplies the load current until the loop responds. Within two or three switching cycles, the loop responds and the inductor current increases to match the load current demand. The rela- tionship of the output voltage droop during the three switching cycles to the output capacitance can be esti- mated by: VOUT · (VIN(MAX) - VOUT) RMS(MAX)I L · F · VIN(MAX) Once the average inductor current increases to the DC load level, the output voltage recovers. The above equa- tion establishes a limit on the minimum value for the output capacitor with respect to load transients. The internal voltage loop compensation also limits the minimum output capacitor value to 22 μF. This is due to its effect on the loop crossover frequency (bandwidth), phase margin, and gain margin. Increased output capac- itance will reduce the crossover frequency with greater phase margin. The maximum output capacitor RMS ripple current is given by: VOUT VREF 1.5V 0.6V Dissipation due to the RMS current in the ceramic output capacitor ESR is typically minimal, resulting in less than a few degrees rise in hot-spot temperature. Figure 3: AAT2506 Evaluation Board Top Side. Figure 4: AAT2506 Evaluation Board Bottom Side.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. For step-down converter, enhanced transient configuration C8 = 100pF and C1 = 10uF. Adjustable Output Resistor Selection For applications requiring an adjustable output voltage, the 0.6V version can be externally programmed. Resistors R1 and R2 of Figure 5 program the output to regulate at a voltage higher than 0.6V. To limit the bias current required for the external feedback resistor string while maintaining good noise immunity, the minimum sug- gested value for R2 is 59k. Although a larger value will further reduce quiescent current, it will also increase the impedance of the feedback node, making it more sensi- tive to external noise and interference. Table 2 summa- rizes the resistor values for various output voltages with R2 set to either 59k for good noise immunity or 221k for reduced no load input current. PTOTAL IOBUCK 2 · (RDSON(HS) · VOBUCK + RDSON(LS) · [VIN - VOBUCK]) VIN + (tsw · F · IOBUCK + IQBUCK + IQLDO) · VIN + IOLDO · (VIN - VOLDO) The AAT2506, combined with an external feedforward capacitor (C8 in Figures 2 and 5), delivers enhanced transient response for extreme pulsed load applications. The addition of the feedforward capacitor typically requires a larger output capacitor C1 for stability. VOUT (V) R2 = 59kΩ R1 (kΩ) R2 = 221kΩ R1 (kΩ) 0.8 19.6 75 0.9 29.4 113 1.0 39.2 150 1.1 49.9 187 1.2 59.0 221 1.3 68.1 261 1.4 78.7 301 1.5 88.7 332 1.8 118 442 1.85 124 464 2.0 137 523 2.5 187 715 3.3 267 1000 Table 2: Adjustable Resistor Values For Use With 0.6V Step-Down Converter. Table 3 22μF1 10μF GND VIN1 Buck Enable LX1 GND Table 3 59k R2PGND LX VP VCC ENLDO EN FB SGND IN OUT GND BYP AAT2506 4.7μF C410μF 10nF LDO Enable VOUTLDO VOUTBUCK LDO Input 0.01μF C81 n/a Figure 5: AAT2506 Evaluation Board Schematic.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Thermal Calculations There are three types of losses associated with the AAT2506 step-down converter: switching losses, con- duction losses, and quiescent current losses. Conduction losses are associated with the R DS(ON) characteristics of the power output switching devices. Switching losses are dominated by the gate charge of the power output switching devices. At full load, assuming continuous con- duction mode (CCM), a simplified form of the step-down converter and LDO losses is given by: PTOTAL IOBUCK 2 · (RDSON(HS) · VOBUCK + RDSON(LS) · [VIN - VOBUCK]) VIN + (tsw · F · IOBUCK + IQBUCK + IQLDO) · VIN + IOLDO · (VIN - VOLDO) IQBUCK is the step-down converter quiescent current and IQLDO is the LDO quiescent current. The term t sw is used to estimate the full load step-down converter switching losses. For the condition where the buck converter is in dropout at 100% duty cycle, the total device dissipation reduces to: PTOTAL = IOBUCK 2 · RDSON(HS) + IOLDO · (VIN - VOLDO) + (IQBUCK + IQLDO) · VIN Since RDS(ON), quiescent current, and switching losses all vary with input voltage, the total losses should be inves- tigated over the complete input voltage range. Given the total losses, the maximum junction tempera- ture can be derived from the  JA for the TDFN33-12 pack- age which is 50°C/W. TJ(MAX) = PTOTAL · ΘJA + TAMB PCB Layout The following guidelines should be used to ensure a proper layout. 1. The input capacitor C2 should connect as closely as possible to VP and PGND, as shown in Figure 4. 2. The output capacitor and inductor should be con- nected as closely as possible. The connection of the inductor to the LX pin should also be as short as possible. 3. The feedback trace should be separate from any power trace and connect as closely as possible to the load point. Sensing along a high-current load trace will degrade DC load regulation. If external feedback resistors are used, they should be placed as closely as possible to the FB pin. This prevents noise from being coupled into the high impedance feedback node. 4. The resistance of the trace from the load return to GND should be kept to a minimum. This will help to minimize any error in DC regulation due to differ- ences in the potential of the internal signal ground and the power ground. 5. For good thermal coupling, PCB vias are required from the pad for the TDFN paddle to the ground plane. The via diameter should be 0.3mm to 0.33mm and positioned on a 1.2mm grid. 6. LDO bypass capacitor (C5) should be connected directly between pins 7 (BYP) and 8 (GND).

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Step-Down Converter Design Example Specifications VOBUCK = 1.8V @ 400mA (adjustable using 0.6V version), Pulsed Load ILOAD = 300mA VOLDO = 3.3V @ 300mA VIN = 2.7V to 4.2V (3.6V nominal) FS = 1.0MHz TAMB = 85°C 1.8V Buck Output Inductor L1 = 3 ⋅ VO2 = 3 ⋅ 1.8V = 5.4μHμsec A μsec A (see Table 1) For Sumida inductor CDRH3D16, 4.7μH, DCR = 105m. IPKL1 = IOBUCK + ΔIL1 PL1 = IOBUCK 2 ⋅ DCR = 0.4A2 ⋅ 105mΩ = 17mW 1.8V Output Capacitor VDROOP = 0.05V 4.7μH · 1.0MHz · 4.2V 23 RMSI L1 · F · VIN(MAX) = · 3 · ΔILOAD VDROOP · FS 3 · 0.3A 0.05V · 1MHz COUT = = = 18 μF

• = 63mArms (VOBUCK) · (VIN(MAX) - VOBUCK) = Pesr = esr · IRMS 2 = 5mΩ · (63mA)2 = 20μW Input Capacitor Input Ripple VPP = 25mV CIN = = = 4.75 μF1 VPP IOBUCK 25mV 0.4A IOBUCK RMSI P = esr · IRMS 2= = 0.2Arms

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 AAT2506 Losses PTOTAL + (tsw · F · IOBUCK + IQBUCK + IQLDO) · VIN + (VIN - VLDO) · ILDO IOBUCK 2 · (RDSON(HS) · VOBUCK + RDSON(LS) · [VIN - VOBUCK]) VIN 4.2V TJ(MAX) = TAMB + ΘJA • PLOSS = 85°C + (50°C/W) • 392mW = 105°C

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. For reduced quiescent current R2 = 221k . VOUT (V) Adjustable Version (0.6V device) R1 (kΩ) R2 = 59kΩ R1 (kΩ) R2 = 221kΩ1 L1 (μH) 0.8 19.6 75.0 4.7 0.9 29.4 113 4.7 1.0 39.2 150 4.7 1.1 49.9 187 4.7 1.2 59.0 221 4.7 1.3 68.1 261 4.7 1.4 78.7 301 4.7 1.5 88.7 332 4.7 1.8 118 442 4.7 1.85 124 464 4.7 2.0 137 523 4.7 or 6.8 2.5 187 715 10 3.3 267 1000 10 VOUT (V) Fixed Version R1 (kΩ) R2 Not Used L1 ( μH) 0.6-3.3V 0 4.7 Table 3: Evaluation Board Component Values. Manufacturer Part Number Inductance (μH) Max DC Current (A) DCR (Ω) Size (mm) LxWxH Type Table 4: Typical Surface Mount Inductors. Manufacturer Part Number Value Voltage Temp. Co. Case Murata GRM21BR60J226ME39 22 μF 6.3V X5R 0805 TDK C2012X5R0J226K 22 μF 6.3V X5R 0805 Taiyo Yuden JMK212BJ226KL 22 μF 6.3V X5R 0805 Table 5: Surface Mount Capacitors.

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD.

Ordering Information

Marking1 Part Number (Tape and Reel)2Buck Converter LDO TDFN33-12 Adj - 0.6V 3.3V TDXYY AAT2506IWP-AW-T1 TDFN33-12 Adj - 0.6V 3.0V TDFN33-12 Adj - 0.6V 2.8V QQXYY AAT2506IWP-AQ-T1 TDFN33-12 Adj - 0.6V 2.7V TDFN33-12 Adj - 0.6V 2.5V SJXYY AAT2506IWP-AN-T1 TDFN33-12 Adj - 0.6V 1.5V TDFN33-12 1.2V 3.0V TDFN33-12 1.8V 2.7V Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™ , document number SQ04-0074. Legend Voltage Code Adjustable (0.6V) A 0.9 B 1.2 E 1.5 G 1.8 I 1.9 Y 2.5 N 2.6 O 2.7 P 2.8 Q 2.85 R 2.9 S 3.0 T 3.3 W 4.2 C

1MHz Step-Down Converter/LDO Regulator DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202019B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 Copyright © 2012, 2013 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility fo r errors or omissions in these materials or the information contained herein. Sky- works may change its documentation, products, services, specifi cations or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for confl icts, incompatibilities, or other diffi culties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided here- under, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, IN- CLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or en- vironmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifi cations as a result of design defects, errors, or operation of products outside of pub- lished parameters or design specifi cations. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifi cations or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identifi cation purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. 1. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder c onnection.

Package Information

Detail "A" Side View 3.00 ± 0.05 Index Area Detail "A" 1.70 ± 0.05 3.00 ± 0.05 0.05 ± 0.05 0.23 ± 0.05 0.75 ± 0.05 2.40 ± 0.05 Pin 1 Indicator (optional) 0.40 ± 0.05

0.1 REF

C0.3