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AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 1 - DESCRIPTION FEATURES The A6110 is a low -dropout regulator that operates the input voltage from 2.5V to 6V and delivers 1 A load current. The A6110 is available in fixed output voltage. The output voltage of the fixed types is preset at an internally trimmed voltage 1V, 1.2V, 3.2V, 3.3V, 5V or can be made with options of the output range from 1V to 5V in 50mV increments. The A6110 consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit for over -current and a thermal-shutdown circuit. The A6110 is available in TO252-3 and SOT223-3 packages. ORERING INFORMATION Package Type Part Number TO252-3 SPQ: 2,500pcs/Reel D A6110DR-XXZ A6110DVR-XXZ SOT223-3 SPQ: 2,500pcs/Reel N A6110NR-XXZ A6110NVR-XXZ Note XX: Output Voltage 25=2.5V, 33=3.3V Z: Package Type see pin description V: Halogen free Package R: Tape & Reel AiT provides all RoHS products Up to 1A Output Current 70uA Operating Supply Current Excellent Line Regulation: 0.05%/V Low Dropout: 350mV@1A(VOUT=3.3V) High Power Supply Rejection Ratio Wide Operating Voltage Range: 2.5V to 6.0V 1V to 5V Factory-Preset Output High Accuracy:±2% Built-in Auto Discharge Function 500mA in-rush Current Limit Fold-back Current Limit Protection Thermal Shutdown Protection Available in TO252-3 and SOT223-3 packages. APPLICATION Portable Communication Equipment Battery-Powered Equipment Laptop, Palmtops, Notebook Computers Hand-Held Instruments PCMCIA Cards and Wireless LAN Cameras & VCRs TYPICAL APPLICATION
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 2 - PIN DESCRIPTION Top View Top View Pin Number Symbol Functions TO252 A B 1 2 GND Ground Pin 2 3 VOUT Output Pin 3 1 VDD Input Pin Top View Top View Top View Top View Pin Number Symbol Functions SOT223-3 A B C D 1 2 3 3 VOUT Output Pin 2 1 1 2 GND Ground Pin 3 3 2 1 VDD Input Pin
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 3 - ABSOLUTE MAXIMUM RATINGS VDD, Input Supply Voltage -0.3V ~ +7V Output Voltage -0.3V~VIN+0.3V Output Current 1.4A Maximum Junction Temperature 125°C Operating Temperature Range NOTE1 -40°C~85°C Storage Temperature Range -65°C~125°C Lead Temperature (Soldering, 10s) 300°C Stresses above may cause permanent damage to the device. T hese are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. NOTE1: The A6110 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. THERMAL RESISTANCE NOTE2 Package θJA θJC TO252-3 90°C/W 10°C/W SOT223-3 160°C/W 20°C/W NOTE2: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 4 - ELECTRICAL CHARACTERISTICS NOTE3 Parameter Symbol Conditions Min TYP Max Units Input Voltage VDD 2.5 - 6 V Output Voltage Accuracy ∆VOUT IOUT = 1mA -2 - +2 % Current Limit ILIM 1.0 1.3 - A Short Circuit Current ISCC VOUT = 0 - 250 - mA Quiescent Current IQ IOUT = 0mA - 70 120 μA Dropout Voltage NOTE4 VDROP IOUT = 300mA 1.2V - 420 - mV 1.5V - 260 - 1.8V - 180 - 2.5V - 140 - 3.3V - 110 - 5.0V - 100 - IOUT = 1A 1.2V - 870 - 1.5V - 700 - 1.8V - 570 - 2.5V - 440 - 3.3V - 350 - 5.0V - 340 - Line Regulation NOTE5 ∆VLINE 2.5V ≤ VDD ≤ 6V, IOUT = 100mA 1.2V - 0.05 0.5 %/V 1.5V 1.8V 3.0V ≤ VDD ≤ 6V, IOUT = 100mA 2.5V 3.8V ≤ VDD ≤ 6V, IOUT = 100mA 3.3V 5.5V ≤ VDD ≤ 6V, IOUT = 100mA 5.0V
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 5 - Parameter Symbol Conditions Min TYP Max Units Load Regulation NOTE6 ∆VLOAD 1mA ≤ IOUT ≤ 1A - 20 - mV Output Voltage NOTE7 Temperature Coefficient TCVOUT IOUT = 100mA, -40°C ≤ T ≤ 85°C - ±100 - ppm/°C Output Noise Voltage eNO 10Hz to100kHz, IOUT = 1mA - 45 - uVRMS Power Supply Rejection Ratio f = 1kHz OUT ≤ 3.3V) PSRR 0.2VP-P Ripple, IOUT = 100mA - 70 - dB f = 1kHz (VOUT > 3.3V) - 60 - Thermal Shutdown Temperature T SD Shutdown, Temp increasing - 165 - °C Thermal Shutdown Hysteresis T SDHY - 30 - °C Output Discharge Resistance R DSC - 50 - Ω NOTE3: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization. NOTE4: The required minimum input operating voltage is equal to VOUT + VDROP, and if VOUT + VDROP < 2.5V, the required minimum input NOTE5: Line regulation is calculated by ∆VLINE = [(VOUT1 - VOUT2)/ (∆VDD x VOUT)] x 100 Where VOUT1 is the output voltage when VDD1 = 6.0V, and VOUT2 is the output voltage when VDD2 = max (VOUT + 0.5V, 2.5V). ∆VDD = VDD1 - VDD2. NOTE6: Load regulation is calculated by ∆VLOAD = VOUT1 - VOUT2 Where VOUT1 is the output voltage when IOUT1=1mA, and VOUT2 is the output voltage when IOUT2 = 1.0A. NOTE7: The temperature coefficient is calculated by TCVOUT = ∆VOUT/ (∆T x VOUT)
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 6 - TYPICAL PERFORMANCE CHARACTERISTIC
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 7 - 9. Load Transient Response (3.3V) 10. Line Transient Response (3.3V) 11. Line Transient Response (3.3V)
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 8 - BLOCK DIAGRAM
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 9 - DETAILED INFORMATION The A6110 is a low dropout CMOS -based positive voltage regulator that operates the input voltage from Thermal Protection Thermal overload protection limits total power dissipation in the A6110. When the junction temperature exceeds T J=165°C, the OTP circuit starts the thermal shutdown function and turns the pass element off allowing the IC to cool. The OTP circuit turns on the pass element again after IC’s junc tion temperature cool by 30°C, result in a pulsed output during continuous thermal overload conditions. Thermal -overloaded protection is designed to protect the A6110 in the event of fault conditions. Do not exceed the absolute maximum junction temperature rating of T J=125°C for continuous operation. The build- in fold-back current limit protection circuit will reduce current value as output voltage drops. When output is shorted to ground, current limit is reduced to 250mA, avoiding damaging the device. Operating Region and Power Dissipation The maximum power dissipation of A6110 depends on the thermal resistance of the case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. The power dissipation across the device is PD = (VDD−VOUT) ×IOUT + VDD×IQ The maximum power dissipation is PD (MAX) = (TJ (MAX) − TA) /θJA Where TJ (MAX) is the maximum operation junction temperature 125°C, T A is the ambient temperature and the θJA is the junction to ambient thermal resistance. The GND pin of the A6110 performs the dual function of providing an electrical connection to ground and channeling heat away. Connect the GND pin to ground using a large pad or ground plane. Capacitor Selection and Regulator Stability Like any low -dropout regulator, the external capacitors used with the A6110 must be carefully selected for regulator stability and performance. The A6110 requires an output capacitor between the VOUT and GND pins for phase compensation. Using a capacitor whose value is ≥1μF on the A6110 input and the amount of
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 10 - capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic or tantalum can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line- transient response. The output capacitor must meet both requirements for minimum amount of capacitance and ES R in all LDO applications. The A6110 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. In the A6110, phase compensation is made with the output capacitor for securing stable operation even if the load current is varied. For this purpose, use a 2.2uF capacitor between V OUT pin and GND pin as close as possible. Load-Transient Considerations The A6110 load-transient response graphs show two components of the output response: a DC shift from the output impedance due to the load current change, and the transient response. The DC shift is quite small due to the excellent load regulation of the IC. Typical output voltage transient spike for a step change in the load current from 0mA to 50mA is tens of mV, depending on the ESR of the output capacitor. Increasing the output capacitor's value and decreasing the ESR attenuates the overshoot. Input-Output (Dropout) Voltage A regulator's minimum input -output voltage differential (or dropout voltage) det ermines the lowest usable supply voltage. In battery-powered systems, this will determine the useful end-of-life battery voltage. Because the A6110 uses a P-Channel MOSFET pass transistor, the dropout voltage is a function of drain-to-source on resistance [RDS(ON)] multiplied by the load current. Layout Considerations To improve AC performance such as PSRR, output noise, and transient response, it is recommended that the PCB be designed with separate ground planes for V DD and VOUT, with each ground plane c onnected only at the GND pin of the device. Make VDD and GND lines sufficiently wide. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor C1 between V DD and GND pin, as close as possible to the pins. Set external components, especially the output capacitor C2, as close as possible to the IC, and make wiring as short as possible.
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 11 -
PACKAGE INFORMATION
Dimension in TO252-3 (Unit: mm) Symbol Min Max A1 0 0.10 A2 2.20 2.40 A3 1.02 1.12 b 0.75 0.84 b1 0.74 0.79 c 0.49 0.57 c1 0.48 0.52 D 6.50 6.70 D1 5.334 REF D2 4.70 4.92 E 9.90 10.30 E1 6.00 6.20 E2 5.30 REF e 2.286 BSC L 1.40 1.60 L2 0.90 1.25 L3 0.60 1.00 L4 1.70 1.90 θ 0° 8°
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 12 - Dimension in SOT223-3 (Unit: mm) Symbol Min Max A 1.50 1.80 A1 0.02 0.10 A2 1.45 1.75 A3 0.80 1.00 b 0.67 0.80 b1 0.66 0.75 b2 2.96 3.09 b3 2.95 3.05 c 0.30 0.35 c1 0.29 0.31 D 6.35 7.05 D1 6.30 6.70 E 6.80 7.20 E1 3.40 3.60 e 2.30 BSC e1 4.60 BSC L 0.80 1.20 L1 1.75 REF L2 0.25 BSC θ 0° 8° θ1 10° 14°
AiT Semiconductor Inc. www.ait-ic.com A6110 LOW DROPOUT VOL TAGE REGULATOR 1A HIGH PSRR CMOS,LINEAR REGULATOR REV1.7 - OCT 2010 RELEASED, APR 2016 UPDATAED - - 13 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or servic e without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc.'s integrated circuit products are not designed, int ended, authorized, or warranted to be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of de ath, personal injury, or server property, or environmental damage. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.