AP7335 DIODES | Alldatasheet

Document overview

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  • PDF pages: 18

Technical content

Features

  • 300mA Low Dropout Regulator with EN
  • Very low I Q: 35µA
  • Wide input voltage range: 2V to 6V
  • Wide adjustable output: 0.8V to 5.0V
  • Fixed output options: 0.8V to 3.9V (0.1V step size possible)
  • High PSRR: 65dB at 1kHz
  • Fast start-up time: 220µs
  • Stable with low ESR, 1µF ceramic output capacitor
  • Excellent Load/Line Transient Response
  • Low dropout: 150mV at 300mA
  • Current limit and short circuit protection
  • Thermal shutdown protection
  • Ambient temperature range: -40ºC to 85°C
  • SOT25, and DFN2020-6: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant (Note 1)

Applications

  • Smart Phones
  • MP3/MP4
  • Battery-powered devices
  • Bluetooth headset Pin Assignments SOT25 (Fixed Output) IN EN OUT (Top View) GND NC4 SOT25 (Adj Output) IN EN ADJ OUT (Top View) GND GND OUT DFN2020-6 (Fixed Output) (Top View) 4IN EN NC5

1 NC6

DFN2020-6 (Adj Output) (Top View) 4IN EN NC5

1 ADJ6

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html.

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 2 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Application Circuit 1uF IN GND EN OUT Enable ADJ 1uF VIN VOUT AP7335 Adjustable Output 1uF IN GND EN OUT Enable 1uF VIN VOUT AP7335 Fixed Output Ω ≤⎟⎟ ⎛ + = K 80 R whereR R1 V V 2 REFOUT Pin Descriptions Pin Name Pin Number Description SOT25 (fixed) SOT25 (adj) DFN2020-6 (fixed) DFN2020-6 (adj) IN 1 1 3 3 Voltage input pin. Bypass to ground through at least 1µF MLCC capacitor GND 2 2 2 2 Ground EN 3 3 1 1 Enable input, active high ADJ - 4 - 6 Output feedback pin NC 4 - 5, 6 5 No connection OUT 5 5 4 4 Voltage output pin. Bypass to ground through 1µF MLCC capacitor

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 3 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Functional Block Diagram IN EN GND OUT Gate Driver 0.8V Current Limit and Thermal Shutdown Fixed Version R R IN EN GND ADJ OUT Gate Driver 0.8V Current Limit and Thermal Shutdown Adjustable Version Absolute Maximum Ratings Symbol Parameter Ratings Unit ESD HBM Human Body Model ESD Protection 2000 V ESD MM Machine Model ESD Protection 200 V VIN Input Voltage 6.5 V OUT, EN Voltage VIN + 0.3 V Continuous Load Current per Channel Internal Limited TST Storage Temperature Range -65 to 150 °C TJ Maximum Junction Temperature 150 °C Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input voltage 2 6 V IOUT Output Current (Note 2) 0 300 mA TA Operating Ambient Temperature -40 85 °C Notes: 2 The device maintains a stable, regulated output voltage without a load current.

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 4 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT

Electrical Characteristics

(TA = 25oC, VIN = VOUT +1V, CIN = 1μF, COUT = 1μF, VEN = 2V, unless otherwise stated) Symbol Parameter Test Conditions Min Typ. Max Unit VREF ADJ Reference Voltage (Adjustable version) I OUT= 0mA 0.8 V IADJ ADJ Leakage (Adjustable version) 0.1 1 μA VOUT Output Voltage Accuracy TA = -40oC to 85oC, IOUT = 10% of IOUT-Max -2 2 % ΔVOUT /ΔVIN/V Line Regulation VIN = (VOUT +1V) to VIN-Max, VEN = VIN, IOUT = 1mA 0.02 0.20 %/V ΔVOUT /VOUT Load Regulation VIN = (VOUT +1V) to VIN-Max, IOUT = 1mA to 300mA -0.6 0.6 % VDropout Dropout Voltage (Note 3) VOUT < 2.5V, IOUT = 300mA 170 300 mV VOUT ≥ 2.5V, IOUT = 300mA 150 200 IQ Input Quiescent Current VEN = VIN, IOUT = 0mA 35 80 μA ISHDN Input Shutdown Current VEN = 0V, IOUT = 0mA 0.1 1 μA ILEAK Input Leakage Current VEN = 0V, OUT grounded 0.1 1 μA tST Start-up Time VEN = 0V to 2.0V in 1μs, IOUT = 300mA 220 μs PSRR PSRR (Note 4) VIN = [VOUT +1V]VDC + 0.5VppAC, f = 1kHz, IOUT = 50mA 65 dB ISHORT Short-circuit Current VIN = VIN-Min to VIN-Max, VOUT < 0.2V (fixed) or 25% of VOUT (ADJ version) 140 mA ILIMIT Current limit VIN = VIN-Min to VIN-Max, VOUT/ROUT = 1.2A 400 600 mA VIL EN Input Logic Low Voltage VIN = VIN-Min to VIN-Max 0.4 V VIH EN Input Logic High Voltage VIN = VIN-Min to VIN-Max 1.4 V IEN EN Input Current VIN = 0V or VIN-Max -1 1 μA TSHDN Thermal shutdown threshold 145 °C THYS Thermal shutdown hysteresis 15 °C θJA Thermal Resistance Junction-to-Ambient SOT25 (Note 5) 187 oC/WDFN2020-6 (Note 5) 251 Notes: 3. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. 4. At V IN < 2.3V, the PSRR performance may be reduced. 5. Test condition for all packages: Device mounted on FR-4 substrate PC board, 1oz copper, with minimum recommended pad layout.

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 5 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics Start-Up Time Time (40μs/div) Start-Up Time Time (40μs/div) Line Transient Response Time (40μs/div) Line Transient Response Time (40μs/div) VOUT=3.3V (1V/div) with 300mA load VEN=0 to 2V (1V/div) VIN=5V CIN=COUT=1μF VOUT=3.3V (20mV/div) IOUT=30mA (50mA/div) VIN=4.3V to 5.3V (1V/div) Tr=Tf=2μs CIN=none, COUT=1μF VOUT=3.3V (20mV/div) IOUT=300mA(200mA/div) VIN=4.3V to 5.3V (1V/div) Tr=Tf=2μs CIN=none, COUT=1μF VEN=0 to 2V (1V/div) VIN=5V CIN=COUT=1μF VOUT=3.3V (1V/div) with no load

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 6 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics (Continued) Load Transient Response Time (100μs/div) Load Transient Response Time (100μs/div) Load Transient Response Time (100μs/div) Load Transient Response Time (100μs/div) VOUT=1.8V (100mV/div) VOUT=1.8V (100mV/div) VIN=VEN=2.8V CIN=COUT=1μF Tr=Tf=1μs VIN=VEN=2.8V CIN=COUT=1μF Tr=Tf=1μs IOUT=10mA to 150mA (200mA/div) IOUT=10mA to 300mA (200mA/div) VOUT=3.3V (100mV/div) VIN=VEN=4.3V CIN=COUT=1μF Tr=Tf=1μs IOUT=10mA to 150mA (200mA/div) VOUT=3.3V (100mV/div) VIN=VEN=4.3V CIN=COUT=1μF Tr=Tf=1μs IOUT=10mA to 300mA (200mA/div)

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 7 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics (Continued) PSRR 0.1 1 10 100 Frequency(kHz) PSRR(dB) PSRR 0.1 1 10 100 Frequency(kHz) PSRR(dB) PSRR 0.1 1 10 100 Frequency(kHz) PSRR(dB) PSRR 0.1 1 10 100 Frequency(kHz) PSRR(dB) IOUT=50mA IOUT=50mA IOUT=300mA VIN=2.25V+0.5VppAC VOUT=1.2V CIN=none, COUT=1μF TA=25°C VIN=2.25V+0.5VppAC VOUT=0.8V CIN=none, COUT=1μF TA=25°C IOUT=300mA VIN=2.8V+0.5VppAC VOUT=1.8V CIN=none, COUT=1μF TA=25°C IOUT=300mA IOUT=50mA IOUT=300mA VIN=4.3V+0.5VppAC VOUT=3.3V CIN=none, COUT=1μF TA=25°C IOUT=50mA

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 8 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics (Continued) Input Quiescent current vs Input Voltage 44 . 555 . 56 Input Voltage(V) Input Quiescent current(μA) Load Regulation -0.2 -0.1 0.0 0.1 0.2 0 50 100 150 200 250 300 Output Current(mA) Output Variation(%) Line Regulation -0.08 -0.04 0.00 0.04 0.08 4 4.5 5 5.5 6 Input Voltage(V) Output Variation(%/V) Input Quiescent Current vs Temperature -50 -25 0 25 50 75 100 125 Temperature(℃) Input Quiescent Current(μA) 90°C 25°C-45°C VIN=VEN=4.3V VOUT=3.3V IOUT=0mA TA=25°C VOUT=3.3V IOUT=0mA VIN=VEN=4.3V VOUT=3.3V VOUT=3.3V IOUT=1mA 25°C 90°C -45°C

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 9 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics (Continued) Dropout Voltage vs Output Current 100 150 200 250 0 50 100 150 200 250 300 Output Current(mA) Dropout Voltage(mV) Dropout Voltage vs Output Current 100 150 200 250 0 50 100 150 200 250 300 Output Current(mA) Dropout Voltage(mV) Short-circuit Current vs Temperature 120 130 140 150 160 - 5 0- 2 5 0 2 5 5 0 7 51 0 0 1 2 5 Temperature(℃) Short-circuit Current(mA) VIN=4.3V ADJ Reference Voltage vs Temperature 0.78 0.79 0.80 0.81 0.82 -50 -25 0 25 50 75 100 125 Temperature(℃) ADJ Reference Voltage(V) VIN=4.3V IOUT=0mA 90°C 25°C -45°C 90°C -45°C 25°C VOUT=1.8V VOUT=3.3V

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 10 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Typical Performance Characteristics (Continued) Current limit vs Temperature 550 575 600 625 650 675 700 -50 -25 0 25 50 75 100 125 Temperature(℃) Current limit(mA) VIN=4.3V VOUT=3.3V

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 11 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Application Note Input Capacitor A 1μF ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The amount of the capacitance may be increased without limit. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires more capacitance. Output Capacitor The output capacitor is required to stabilize and improve the transient response of the LDO. The AP7335 is stable with very small ceramic output capacitors. Using a ceramic capacitor value that is at least 1 μF with ESR > 15m Ω on the output ensures stability. Higher capacitance values help to improve line and load transient response. The output capacitance may be increased to keep low unders hoot and overshoot. Output capacitor must be placed as close as possible to OUT and GND pins. Region of Stable C OUT ESR vs. Load Current 0.001 0.01 0.1 100 0 50 100 150 200 250 300 Load Current (mA) COUT ESR (Ω) Unstable Range Stable Range Unstable Range VIN=4.3V CIN=COUT=1μF

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 12 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Application Note (Continued) Adjustable Operation The AP7335 provides output voltage from 0.8V to 5.0V through external resistor divider as shown below. 1uF IN GND EN OUT Enable ADJ 1uF VIN VOUT AP7335 The output voltage is calculated by: ⎛ += 1R1REFVOUTV Where VREF=0.8V (the internal reference voltage) Rearranging the equation will give the following that is used for adjusting the output to a particular voltage: ⎛ −= 1 REFV OUTV 2R1R To maintain the stability of the internal reference voltage, R2 need to be kept smaller than 80kΩ. No Load Stability Other than external resistor divider, no minimum load is required to keep the device stable. The device will remain stable and regulated in no load condition. ON/OFF Input Operation The AP7335 is turned on by setting the EN pin high, and is turn ed off by pulling it low. If this feature is not used, the EN pin should be tied to IN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under V IL and VIH. Current Limit Protection When output current at OUT pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to approximately 600mA to prev ent over-current and to protect the regulator from damage due to overheating. Short Circuit Protection When OUT pin is short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 140mA. This feature protects the regulator from over-current and damage due to overheating.

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 13 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Application Note (Continued) Thermal Shutdown Protection Thermal protection disables the output when the junction temperature rises to approximately +145°C, allowing the device to cool down. When the junction temperature r educes to approximately +130°C the output circuitry is enabled again. Depending on power dissipation, thermal resistance, and ambient te mperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regul ator, protecting it from damage due to overheating. Ultra Fast Start-up After enabled, the AP7335 is able to provide full power in as little as tens of microseconds, typically 220µs, without sacrificing low ground current. This feature will help load circuitry move in and out of standby mode in real time, eventually extend battery life for mobile phones and other portable devices. Fast Transient Response Fast transient response LDO can extend battery life. TDMA-based cell phone protocols such as Global System for Mobile Communications (GSM) have a transmit/receive dut y factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. In baseband circuits, the load often transitions virtually instantaneously from 100µA to 100mA. To meet this load requirement, the LDO must react very quickly without a large voltage drop or overshoot — a requirement that cannot be met with conventional, general-purpose LDO. The AP7335’s fast transient response from 0 to 300mA provides stable voltage supply for fast DSP and GSM chipset with fast changing load. Low Quiescent Current The AP7335, consuming only around 35µA for all input ran ge, provides great power saving in portable and low power applications. Wide Output Range The AP7335, with a wide output range of 0.8V to 5.0V, provides a versatile LDO solution for many portable applications. Power Dissipation The device power dissipation and proper sizing of the thermal plane that is connected to the thermal pad is critical to avoid thermal shutdown and ensure reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by: PD = (VIN - VOUT) X IOUT The maximum power dissipation, handled by the device, depends on the maximum junction to ambient thermal resistance, maximum ambient temperature, and maximum device junction temperature, which can be calculated by the equation in the following: PD (max@TA) = JAR )AT - C 145 ( θ ° +

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 14 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT

Ordering Information

G : Green 7 : Tape & ReelBlank : ADJ 10 : 1.0V Output 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V 20 : 2.0V 39 : 3.9V 08 : 0.8V W : SOT25 SN : DFN2020-6 Device Package Code Packaging (Note 6) 7”/13” Tape and Reel Quantity Part Number Suffix AP7335-XXWG-7 W SOT25 3000/Tape & Reel -7 AP7335-XXSNG-7 SN DFN2020-6 3000/Tape & Reel -7 Notes: 6. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 15 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Marking Information (1) SOT25 1 2 3 XX Y W X ( Top View ) XX : Identification code W : Week : A~Z : 1~26 week; X : A~Z : Green Y : Year 0~9 a~z : 27~52 week; z represents 52 and 53 week Device Package Identification Code AP7335-ADJ SOT25 ZA AP7335-08 SOT25 ZB AP7335-10 SOT25 ZC AP7335-12 SOT25 ZD AP7335-15 SOT25 ZE AP7335-18 SOT25 ZF AP7335-20 SOT25 ZG AP7335-25 SOT25 ZH AP7335-28 SOT25 ZJ AP7335-30 SOT25 ZK AP7335-33 SOT25 ZM AP7335-39 SOT25 ZN (2) DFN2020-6 Y : Year : 0~9 ( Top View ) Y W X XX XX : Identification Code X : A~Z : Green W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week Device Package Identification Code AP7335-ADJ DFN2020-6 ZA AP7335-08 DFN2020-6 ZB AP7335-10 DFN2020-6 ZC AP7335-12 DFN2020-6 ZD AP7335-15 DFN2020-6 ZE AP7335-18 DFN2020-6 ZF AP7335-20 DFN2020-6 ZG AP7335-25 DFN2020-6 ZH AP7335-28 DFN2020-6 ZJ AP7335-30 DFN2020-6 ZK AP7335-33 DFN2020-6 ZM AP7335-39 DFN2020-6 ZN

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 16 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Package Outline Dimensions (Continued) (1) Package Type: SOT25 (2) Package Type: DFN2020-6

0.05 M C A B

B 0.15 Bottom View A C 0/0.05 0.57/0.63 0.15max.C

0.15 C2x-

0.08 C 0.05 C Seating plane 1.45/1.65 1.95/2.075 0.30/0.40 0.2/0.30.65nom. 0.76/0.96 1.95/2.075 Pin#1 ID Marking R0.1 0.37 0.45 0.65 1.67 0.150.15 Land Pattern Recommendation 0.37 0.9 (Unit:mm) Top View CL CL CL CL

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 17 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT Taping Orientation (Note 7) For DFN2020-6

300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator AP7335 Document number: DS32259 Rev. 1 - 2 18 of 18 www.diodes.com July 2010 © Diodes Incorporated NEW PRODUCT IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liabi lity arising out of the application or use of this document or an y product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of othe rs. Any Customer or user of this document or products desc ribed herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability what soever in respect of any prod ucts purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives har mless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifica lly not authorized for use as critical co mponents in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support dev ices or systems, and acknowledge and agree that they are solely responsi ble for all legal, regulatory and safety-related requirements concerning their products and any use of Diode s Incorporated products in such safety-cri tical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its repr esentatives against any damages ar ising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com