Switching Regulators

Switching Regulators
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	4 × 4 mm QFN-16	▪ 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
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 (1×/1.5×), 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 3 × 3 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 (1×/1.5×/2×), 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