SC1461 datasheet(1/8 Pages) SEMTECH

Numer części	SC1461

Szczegółowy opis	Multi Mode Capless Charge Pump

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Producent	SEMTECH [Semtech Corporation]

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SC1461

Multi Mode Capless ChargeTM Pump

Features

Applications

Revision 1, December 2000

Typical Application Circuit

Description

The SC1461 is a versatile charge pump designed for use

in battery operated power supply applications. A simple,

low current boost circuit can be implemented without

costly inductors or capacitors. Internal MOSFETs and

control circuitry eliminate the need for costly board space

and design time. The small device footprint allows for

compact circuit design.

The SC1461 is a CaplessTM charge pump for applications

that require up to 8mA of output current. Three modes

of output voltage can be programmed via the ADJ pin.

Modes include:

V

O = (1.32*VIN) ± 4% @ 7mA of output current

V

O = (1.515 * VIN) ± 4% @ 4mA of output current

and the adjustable mode where an external resistor

divider determines the output voltage.

The SC1461 is packaged in a 5 lead SOT-23 package.

K Small size - 5 pin SOT-23 package

K 4% voltage accuracy

K 65uA typ. quiescent current

K User selectable output voltages of 1.515* V

IN,

1.32 * V

IN, or adjustable output

K All specifications rated over full temperature range

(-40°C to 85°C)

K PDA Power Supplies

K Notebook Power Supplies

K Peripheral Card Supplies

K Industrial Power Supplies

K High Density DC/DC Conversion

R2

47nF

Cout

47nF

Cout

Vin = 3.3V

47nF

Cout

0.22uF

Cin

Vin = 2.5V

0.22uF

Cin

SC1461

Vin

Vo

SC1461

R1

Vin

Vo = 5.0V

Vo = 3.3V

0.22uF

Cin

SC1461













+

×

=

2

R

1

R

1

R

1

Vin

03

.

1

Vo

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SC1461 Arkusz danych(PDF) 1 Page - Semtech Corporation

SC1461 Arkusz danych(HTML) 1 Page - Semtech Corporation

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Podobny opis - SC1461

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