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參數(shù)資料
| 型號(hào)： | HB14173 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Breake Away Header .025(0.64mm) Square Posts |
| 中文描述： | 破開客場(chǎng)頭.025（0.64毫米）方形崗位 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | HB14173 |
www.semtech.com
1
POWER MANAGEMENT
SC1462
High Output Current
Charge Pump Doubler
December 12, 2005
Description
Features
Typical Application Circuit
Applications
Features
The SC1462 is a versatile charge pump designed for use
in battery operated power supply applications over the
wide input range of 1.65 to 5.5 volts. A simple, low qui-
escent current charge pump doubler 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 6 lead SOT-23 package
helps minimize board space.
The SC1462 charge pump can be used for applications
that require up to 80mA of output current with V
IN = 2.5V
to 5.5V. Typical dropout voltage (2×V
IN)-VOUT is shown be-
low for several values of V
IN.
Input supply voltage range of 1.65V to 5.5V
Small size - 6 pin SOT-23 package
Typical efciency of :
91% @ V
IN = 2.5V, IOUT = 45mA
94% @ V
IN = 3.6V, IOUT = 55mA
Short circuit and over-temperature protection
140μA typical input current @ no load
Shutdown current <1μA
Designed to work with ceramic or tantalum
capacitors
Fixed frequency of 160kHz
All specications rated over full temperature range
(-40°C to 85°C)
Cellular phones
Handheld devices
LCD Display
Typical Dropout Voltage vs. IOUT
@TA = 25 Deg. C.
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
000E+0
20E-3
40E-3
60E-3
80E-3
100E-3
IOUT (A)
Outp
ut
Dr
o
p
out
Voltage
(V)
VIN = 1.5V
VIN = 2.5V
VIN = 3.6V
VIN = 4.5V
VIN = 5.5V
SC1462
Logic Control or GND
VIN
VIN
SHDN
VOUT
C+
C-
GND
CIN
3.3μF
CBUCKET
3.3μF
1
2
3
45
6
3.3μF
COUT
VOUT
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