an8049sh Panasonic Corporation of North America, an8049sh Datasheet

an8049sh

Manufacturer Part Number

an8049sh

Description

1.8-volt 3-channel Step-up, Step-down, And Polarity Inverting Dc-dc Converter Control Ic

Manufacturer

Panasonic Corporation of North America

Datasheet

1.AN8049SH.pdf (28 pages)

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Voltage Regulators

AN8049SH

1.8-volt 3-channel step-up, step-down, and polarity inverting

DC-DC converter control IC

I Overview

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.

I Features

I Applications

Publication date: December 2001

• Wide operating supply voltage range: 1.8 V to 14 V

• High-precision reference voltage circuit

• Surface mounting package for miniaturized and thinner

• 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.

• Fixed duty factor: 86%

• 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.

• Electronic equipment that requires a power supply system

power supplies

The AN8049SH is a three-channel PWM DC-DC

— V

— Error amplifier: ±1.5%

Common-mode input voltage range: − 0.1 V to V

This allows the number of external components to be reduced by two resistors.

However, the duty can be adjusted to anywhere from 0% to 100% with an external resistor.

Part No.: AN8049FHN

Package: QFN024-P-0405A (Lead-free package)

REF

pin voltage: ±1%

0.5-mm lead pitch

Width

Depth

Thickness 0.8 mm (max.)

4.20 mm ± 0.10 mm

5.20 mm ± 0.10 mm

SDH00012BEB

−1.4 V

Note) The package of this product will be changed

(0.5)

to lead-free type (SSOP024-P-0300D). See the

new package dimensions section later of this

datasheet.

5.5±0.3

7.5±0.3

SSOP024-P-0300A

Unit : mm

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