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High-Performance Power and Hall-Effect Sensor ICs

Switching Regulators ....

Also see: Sanken 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

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