Power Management

Power Management Selection Guides

Part Number Description Input Voltage Number of Outputs Output Ratings Package Key Features A4402 Linear and Switching 6 V to 50 V   1.8 to 3.3 V (linear), 3.3 to 5 V (switching) 16-pin TSSOP (suffix LP) with exposed pad • 2 MHz switching frequency • Adjustable soft start timer • Watchdog input • Power-on reset output • Adjustable 2% buck regulator • Adjustable 2% linear regulator • Enable input • 6 to 50 V supply voltage range • Overcurrent protection • Undervoltage lockout (UVLO) • Thermal shutdown protection A8450 Multi-Output Regulator 6 V to 45 V Quad 1.2 V to 3.3 V @ 200 mA 3.3 V@ 200 mA 5 V@ 200 mA 5 V@ 200 mA SOIC-24 Internal buck regulator with two linear regulators (5 V tracking) and two linear controllers (3.3 V and 1.8 V to 3.3 V adjustable), 135°C operation, fault flag

Part Number Topology Input Voltage Output Output Current Packages Features A8281 Buck/Linear Vo+4.5 V to 48 V Single, adjustable Iout max = 750 mA SOIC-16 Buck/LDO, Integrated FET, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag A8282 Buck/Linear Vo+4.5 V to 48 V Single, adjustable Iout max = 750 mA SOIC-24 Buck/LDO, Integrated FET, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag; selectable Vout 12 V, 13 V, 14 V or 18 V, 19 V, 20 V, 21 V A8285 Boost/Linear 8 V to 16 V Single, adjustable Iout max = 500 mA SOIC-16 Boost/LDO, Integrated FET, 16 selectable output voltages from 12.7 V to 20.4 V, 12C interface, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag A8287 Boost/Linear 8 V to 16 V Single, adjustable Iout max = 500 mA SOIC-24 Boost/LDO, Integrated FET, 16 selectable output voltages from 12.7 V to 20.4 V, 12C interface, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag, 22 kHz tone detection   A8290 Boost/Linear 8 V to 16 V Single, adjustable Iout max = 900 mA limited 5×5 mm QFN-28 Boost/LDO, Integrated FET, 16 selectable output voltages from 12.7 V to 20.4 V, 12C interface, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag, 22 kHz tone detection, integrated DiSEqC™ bypass FET, Output Disconnect Diagnostic A8291 Boost/Linear 8 V to 16 V Single, adjustable Iout max = 600 mA limited 5×5 mm QFN-28 Boost/LDO, Integrated FET, 16 selectable output voltages from 12.7 V to 20.4 V, 12C interface, 22 kHz tone (DiSEqC™ compatible), current limit, fault flag, 22 kHz tone detection, integrated DiSEqC™ bypass FET, Output Disconnect Diagnostic A8286 Boost/Linear 8 V to 16 V Dual, adjustable Iout max = 900 mA limited 5×5 mm QFN-28 Same as A8290 (less Bypass FET), with dual channel outputs and A8290 single-footprint option A8292 Boost/Linear 8 V to 16 V Dual, adjustable Iout max = 600 mA limited 5×5 mm QFN-28 Same as A8286 but lower output current limit for non-DirecTV applications

Part Number Topology Input Voltage Output Output Current Packages Key Features A8430 Boost 2.5 V to 10 V 36 V max 300 mA peak switch current 3×3 mm TDFN-5 WLED driver for LCD backlight; 1.2 MHz boost converter with integrated 36 V switch in 0.75 mm high 3x3 mm package with TSOT-23-5 footprint A8431 Boost 2.5 V to 10 V 32 V max 300 mA peak switch current 2×3 mm TDFN-6 WLED driver for LCD backlight; 1.2 MHz boost converter with integrated 36 V switch in 0.75 mm high 2x3 mm package with TSOT-23-5 footprint; 35 V overvoltage protection A8434 Charge pump 2.7 V to 5.5 V 1-6 channels, 6 V max Iout max = 30 mA per channel 3×3 mm TQFN-16 1 MHz six-channel charge pump, adaptive control scheme (1x/1.5x/2x), 30 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP A8435 Charge pump 2.7 V to 5.5 V 1-4 channels, 6 V max Iout max = 30 mA per channel 3×3 mm TQFN-16 1 MHz four-channel charge pump, adaptive control scheme (1x/1.5x), 30 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP A8480 Boost 2.7 V to 9 V 23 V max 1.5 A peak switch current 3×3 mm MLP/TDFN-10, 1.6×1.6 mm CSP-9 1.2 MHz boost for OLED supply, WLED backlight/flash, output disconnect, dimming, OVP, pulse-by-pulse OCP, OTP, soft start A8483 Boost 2.5 V to 10 V 36 V max 350 mA peak switch current 3×3 mm TDFN-5 1.2 MHz boost converter for OLED/LCD/VARACTOR/HDTV power, extended (0.9 V to 18 V) input voltage with bias supply, 0.75 mm high 3x3 mm package with TSOT-23-5 footprint A8501 Boost Vin = 8 V to 21 V 28 V max 3.6 A peak switch current eTSSOP-28 Single Vin supply (e.g., 12 V), drives multiple LED strings e.g., 9-36 LEDs at 100 mA, 600 kHz to 2.2 MHz (adjustable) boost, 40 V internal FET, flexible dimming methods, multiple protection schemes A8503 Boost Vin = 4.3 V to 5.5 V (5 V to 25 Vbat 44 V max 2.2 A peak switch current 4×4 mm TQFN-26 Drives multiple LED strings e.g., 10-60 LEDs at 25 mA, 1.5 MHz boost, 50 V internal FET, flexible dimming methods, multiple protection schemes A8500 Boost Vin = 4.2 V to 5.5 V (6 V to 21 Vbat) 47 V max 2 A peak switch current 3×3 mm TQFN-26 Drives multiple LED strings e.g., 16-96 LEDs at 25 mA, 200 kHz to 2 MHz boost, 50 V internal FET, flexible dimming methods, adjustable switching frequency A8504 Boost Vin = 4.2 V to 5.5 V (6 V to 21 Vbat) 47 V max 2 A peak switch current 3×3 mm TQFN-26 Drives multiple LED strings e.g., 16-88 LEDs at 40 mA, 200 kHz to 2MHz boost, 50 V internal FET, flexible dimming methods, adjustable switching frequency A8530 Charge pump 2.7 V to 5.5 V 1-6 channels, for WLED backlight and/or flash/torch Total Iout max = 320 mA DC 3×3 mm TQFN-16 1 MHz six-channel charge pump, 320 mA total output, adaptive control scheme (1x/1.5x/2x), 30 or 100 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP

Part Number Topology Input Voltage Output Output Current Packages Key Features A4402 Linear and Switching 6 V to 50 V 1.8 to 3.3 V (linear), 3.3 to 5 V (switching) 1 A 16-pin TSSOP (suffix LP) with exposed pad • 2 MHz switching frequency • Adjustable soft start timer • Watchdog input • Power-on reset output • Adjustable 2% buck regulator • Adjustable 2% linear regulator • Enable input • 6 to 50 V supply voltage range • Overcurrent protection • Undervoltage lockout (UVLO) • Thermal shutdown protection A4403 Switching 9 V to 46 V 3.3 to 5 V 3 A 16-pin TSSOP (suffix LP) with exposed pad • Extremely fast load-transient response with minimal output voltage delta • Achieves high step-down ratios with on-times <50 ns • User-configurable on-time, achieving switching frequencies up to 2 MHz • Minimal external components required • Optimized for low value filter capacitors and inductors • Wide input voltage range: 9 to 46 V • Output Current: 3 A • Low standby current <100 µA • Supplied in thermally-enhanced QFN package A4490 Buck 4.5 V to 34 V 0.8 to 5 V 2 A peak switch current 4 × 4 mm QFN-20 Three outputs, 550 kHz fixed frequency, multiphase switching, independent control of each converter, Power-on-reset flag, Internal compensation, 4 × 4 mm QFN Package, small PCB footprint A6210 Switching 9 V to 46 V 3.3 to 5 V 3 A 4 × 4 mm QFN-16 • User-configurable on-time, achieving switching frequencies up to 2.0 MHz • Brightness control through PWM of DIS pin • Minimal external components required • No output capacitor required • Wide input voltage range: 9 to 46 V • Low 0.18 V sense voltage for higher efficiency • Output Current: up to 3.0 A • Low standby current <100 µA • Thermal shutdown • Supplied in a thermally-enhanced 4 mm QFN package A8430 Boost 2.5 V to 10 V 36 V max 300 mA peak switch current 3×3 mm TDFN-5 WLED driver for LCD backlight; 1.2 MHz boost converter with integrated 36 V switch in 0.75 mm high 3x3 mm package with TSOT-23-5 footprint A8431 Boost 2.5 V to 10 V 32 V max 300 mA peak switch current 2×3 mm TDFN-6 WLED driver for LCD backlight; 1.2 MHz boost converter with integrated 36 V switch in 0.75 mm high 2x3 mm package with TSOT-23-5 footprint; 35 V overvoltage protection A8434 Charge pump 2.5 V to 5.5 V 1-6 channels, 6 V max Iout max = 30 mA per channel 3×3 mm TQFN-16 1 MHz six-channel charge pump, adaptive control scheme (1x/1.5x/2x), 30 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP A8435 Charge pump 2.5 V to 5.5 V 1-4 channels, 6 V max Iout max = 30 mA per channel 3×3 mm TQFN-16 1 MHz four-channel charge pump, adaptive control scheme (1x/1.5x), 30 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP A8436 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Three-level peak switch current: 1 A, 1.2 A, 1.4 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and single-diode low-leakage feedback A8438 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Three-level peak switch current: 1.6 A, 1.8 A, 2 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and single-diode low-leakage feedback A8439 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Eight-level peak switch current: 0.27 A to 1.5 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, continuous or dual diode feedback, low leakage also adds auto refresh function A8483 Boost 2.5 V to 10 V 36 V max 350 mA peak switch current 3×3 mm TDFN-5 1.2 MHz boost converter for OLED/LCD/VARACTOR/HDTV power, extended (0.9 V to 18 V) input voltage with bias supply, 0.75 mm high 3x3 mm package with TSOT-23-5 footprint A8498 Buck 8 V to 50 V 0.8 V to 24 V 5 A peak switch current eSOIC-8 50 V maximum input voltage, adjustable output voltage, high efficience, adjustable fixed off-time buck converter A8499 Buck 8 V to 50 V 1.2 V to 24 V 3 A peak switch current eSOIC-8 50 V maximum input voltage, adjustable output voltage, high efficience, adjustable fixed off-time buck converter A8530 Charge pump 2.7 V to 5.5 V 1-6 channels, for WLED backlight and/or flash/torch Total Iout max = 320 mA DC 3×3 mm TQFN-16 1 MHz six-channel charge pump, 320 mA total output, adaptive control scheme (1x/1.5x/2x), 30 or 100 mA per channel, 0.5% channel current matching, multiple dimming schemes, soft start, OVP A8697 Buck 8 V to 25 V 0.8 V to 20 V 7 A peak switch current eSOIC-8 25 V maximum input voltage, adjustable output voltage, high efficience, adjustable fixed off-time buck converter A8698 Buck 8 V to 25 V 0.8 V to 20 V 5 A peak switch current eSOIC-8 25 V maximum input voltage, adjustable output voltage, high efficience, adjustable fixed off-time buck converter

Part Number Topology Input Voltage Output Output Current Packages Key Features A8436 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Three-level peak switch current: 1 A, 1.2 A, 1.4 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and single-diode low-leakage feedback A8438 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Three-level peak switch current: 1.6 A, 1.8 A, 2 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and single-diode low-leakage feedback A8439 Flyback 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Eight-level peak switch current: 0.27 A to 1.5 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, continuous or dual diode feedback, low leakage also adds auto refresh function A8731 Flyback 2.3 V to 5.5 V Adjustable 0.4 to 1.2 A 3×3 mm TDFN-10L Optimized for camera phones A8733 Flyback 2.3 V to 5.5 V Adjustable 0.6 to 1.8 A peak switch current 3×3 mm TDFN-10L Optimized for camera phones A8737 Flyback 2.3 V to 5.5 V Adjustable 0.4 to 0.9 A peak switch current 3×3 mm TDFN-10L Optimized for camera phones A8738 Flyback 2.3 V to 5.5 V Adjustable 0.4 to 0.9 A peak switch current 3×3 mm TDFN-10L Optimized for camera phones A8835 Flyback Vin = 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Eight-level peak switch current: 0.55 A to 1.75 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and low-leakage feedback A8837 Flyback Vin = 3 V to 5.5 V (or 1.5 V min if Vcc supplied) Adjustable Eight-level peak switch current: 0.7 A to 1.2 A 3×3 mm TDFN-10 Xenon flash capacitor charger with integrated 40 V switch, IGBT driver, and low-leakage feedback