mAhXLife LED Driver with
SC600
TM
5.0V, 4.5V, or 4.0V Output
POWER MANAGEMENT
Description
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.
mAhxLife TM LED Drivers feature a fractional charge pump
implementation with ef ? ciency 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.
mAhXLife TM LED drivers replace switched mode power
supplies and provide comparable ef ? ciency with less cost,
area, noise, and complexity.
Typical Ef ? ciency
Features
Small size - MLPD 10 lead 3x3mm or MSOP-10
package allows for a complete solution in .05 sq. in.
Peak ef ? ciency 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 <1 μ A
Selectable ? xed frequencies of 8kHz, 32kHz,
262kHz and 650kHz
Low input and output ripple
Regulated to ± 5%
Ease of use
Applications
Cellular phones
LED backlighting
PDA power supplies
Portable electronics
Electronic books
Handheld computers
100
90% of Li-Ion
Battery Life
Wireless web appliances
90
SC600A
80
70
60
5.0V@60mA
Device with Only 2x Mode
5.0V@60mA
50
4.2
4.0
3.8
3.6
3.4
3.2
3.0
Input Voltage [V]
Typical Application Circuit
U1
2.7V to 6.5V
3
VIN
VOUT
1
4.0V, 4.5V or 5.0V
Cin
1.0uF
6
4
EN
CD4
CF1+
CF1-
CF2+
2
9
10
Cbucket1
1.0uF
Cout
0.33uF
UP TO 6 LEDS
5
CX8
CF2-
7
Cbucket2
1.0uF
GND
8
January 9, 2006
1
www.semtech.com
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相关代理商/技术参数
SC600BIMSTR 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600BIMSTRT 制造商:Semtech Corporation 功能描述:Driver IC Leaded Process Compatible:Yes
SC600CIMLTR 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600CIMLTRT 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600CIMSTR 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600CIMSTRT 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600DIMLTR 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output
SC600DIMLTRT 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output