AN8049SH

Voltage Regulators AN8049SH 1.8-volt 3-channel step-up, step-down, and polarity inverting DC-DC converter control IC Unit : mm s 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 stepup outputs and one step-down or polarity inverted output with a minimal number of external components. The 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. 6.5±0.3 24 13 5.5±0.3 7.5±0.3 0.15 – 0.05 +0.10 (0.50) 0° to 10° s Features (0.50) 0.50 Seating plane 0.2±0.1 0.65±0.10 0.1±0.1 0.65±0.10 1.5±0.2 1 12 Seating plane Wide operating supply voltage range: 1.8 V to 14 V High-precision reference voltage circuit SSOP024-P-0300A — VREF pin voltage: ±1% — 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 kHz to 1 MHz On/off (sequence control) pins provided for each channel for easy sequence control setup 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-circu...