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AN8049SH Datasheet, PDF (1/28 Pages) Panasonic Semiconductor – 1.8-volt 3-channel step-up, step-down, and polarity inverting DC-DC converter control IC | |||
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Voltage Regulators
AN8049SH
1.8-volt 3-channel step-up, step-down, and polarity inverting
DC-DC converter control IC
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 step-
up 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
Unit : mm
(0.50)
0° to 10°
1
12
s Features
⢠Wide operating supply voltage range: 1.8 V to 14 V
(0.50)
0.50
Seating plane
0.2±0.1
⢠High-precision reference voltage circuit
â VREF pin voltage: ±1%
â Error amplifier: ±1.5%
SSOP024-P-0300A
⢠Surface mounting package for miniaturized and thinner power supplies
Package: SSOP-24D
0.5-mm lead pitch
7.8 mm à 6.8 mm à 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: â 0.1 V to VCC â1.4 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 à 4.4 mm à t 0.8 mm
Seating plane
s Applications
⢠Electronic equipment that requires a power supply system
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