SC600 datasheet(1/19 Pages) SEMTECH

Part #	SC600

Description	mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output

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Manufacturer	SEMTECH [Semtech Corporation]

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POWER MANAGEMENT

SC600

mAhXLifeTM LED Driver with

5.0V, 4.5V, or 4.0V Output

50

60

70

80

90

100

3.0

3.2

3.4

3.6

3.8

4.0

4.2

Input Voltage [V]

90% of Li-Ion

Battery Life

SC600A

5.0V@60mA

Device with Only 2x Mode

5.0V@60mA

January 9, 2006

Description

Features

Typical Application Circuit

Applications

Features

The SC600 is a versatile charge pump designed for use

in battery operated power supply applications. The wide

input range is matched for Li-Ion battery applications.

mAhxLifeTM LED Drivers feature a fractional charge pump

implementation with efﬁciency comparable to a switching

regulator without costly inductors. Only two tiny ceramic

capacitors are required, and the inductorless implemen-

tation provides a reduced-EMI solution. Patented low

noise mode switching circuitry and constant output cur-

rent allow the use of extremely small input and output

capacitors.

The SC600 charge pump can be used for applications

that require up to 120mA of output current with a 4.0V

or 4.5V output. The 5.0V output version provides up to

60mA of output current.

mAhXLifeTM LED drivers replace switched mode power

supplies and provide comparable efﬁciency with less cost,

area, noise, and complexity.

Typical Efﬁciency

Small size - MLPD 10 lead 3x3mm or MSOP-10

package allows for a complete solution in .05 sq. in.

Peak efﬁciency over 90% (extends battery life)

Four component versions available

60mA versions available in 5.0V and 4.5V output

120mA versions available in 4.5V and 4.0V output

Short-circuit and over-temperature protection

Soft-start function

Shutdown current <1μA

Selectable ﬁxed frequencies of 8kHz, 32kHz,

262kHz and 650kHz

Low input and output ripple

Regulated to ± 5%

Ease of use

Cellular phones

LED backlighting

PDA power supplies

Portable electronics

Electronic books

Handheld computers

Wireless web appliances

Cin

1.0uF

2.7V to 6.5V

Cbucket1

1.0uF

Cbucket2

1.0uF

VIN

EN

CD4

CX8

GND

CF2-

CF2+

CF1-

CF1+

VOUT

3

6

4

5

8

7

10

9

2

1

U1

Cout

0.33uF

UP TO 6 LEDS

4.0V, 4.5V or 5.0V

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SC600 Datasheet(PDF) 1 Page - Semtech Corporation

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