Panasonic AN8049SH Data Manual

查询AN8049供应商 Voltage Regulators

AN8049SH 1.8-volt 3-channel step-up, step-down, and polarity inverting DC-DC converter control IC

Unit : mm

Overview

The AN8049SH is a three-channel PWM DC-DC converter control IC that features low-voltage operation. This IC can form a power supply that provides two step- up outputs and one step-down or polarity inverted output with a minimal number of external components. The

0° to 10°

AN8049SH features the ability to operate from a supply voltage as low as 1.8 V, and thus can be operated from two dry-batteries.

Features

Seating plane Seating plane

Wide operating supply voltage range: 1.8 V to 14 V High-precision reference voltage circuit

VREF pin voltage: ±1% SSOP024-P-0300A

Error amplifier: ±1.5% Surface mounting package for miniaturized and thinner power supplies Package: SSOP-24D 0.5-mm lead pitch 7.8 mm × 6.8 mm × t 1.9 mm

Supports control over a wide output frequency range: 20 k Hz to 1 MHz 5. 5± 0. 0. ±0 .1 0. ±0 .1 7. 5± 0.

On/off (sequence control) pins provided for each channel for easy sequence control setup 0. 1± 0. 1. 5± 0.

The negative supply error amplifier supports 0-volt input. Common-mode input voltage range: − 0.1 V to VCC −1.4 V This allows the number of external components to be reduced by two resistors. Fixed duty factor: 86% However, the duty can be adjusted to anywhere from 0% to 100% with an external resistor. Timer latch short-circuit protection circuit (charge current: 1.1 µA typical) Low input voltage malfunction prevention circuit (U.V.L.O.) (operation start voltage: 1.67 V typical) Standby function (active-high control input, standby mode current: 1 µA maximum) Alternate package versions also available. Part No.: AN8049FHN Package: QFN-24

0.5-mm lead pitch 5.4 mm × 4.4 mm × t 0.8 mm

Applications Electronic equipment that requires a power supply system