参数资料
| 型号： | SC1462ISKTRT |
| 厂商： | Semtech |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHD CAP DBL ADJ SOT23 |
| 标准包装： | 1 |
| 类型： | 切换式电容器（充电泵），倍增器 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 12V |
| 输入电压： | 1.65 V ~ 5.5 V |
| 频率 - 开关： | 160kHz |
| 电流 - 输出： | 80mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 包装： | 标准包装 |
| 供应商设备封装： | SOT-23-6 |
| 产品目录页面： | 1357 (CN2011-ZH PDF) |
| 其它名称： | SC1462ISKDKR |
SC1462
NOT RECOMMENDED FOR NEW DESIGN
High Output Current
Charge Pump Doubler
POWER MANAGEMENT
Description
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 )-V OUT is shown be-
low for several values of V IN .
Typical Dropout Voltage vs. I OUT
@T A = 25 Deg. C.
0.9
Features
Input supply voltage range of 1.65V to 5.5V
Small size - 6 pin SOT-23 package
Typical ef ? ciency of :
91% @ V IN = 2.5V, I OUT = 45mA
94% @ V IN = 3.6V, I OUT = 55mA
Short circuit and over-temperature protection
140 μ A typical input current @ no load
Shutdown current <1 μ A
Designed to work with ceramic or tantalum
capacitors
Fixed frequency of 160kHz
All speci ? cations rated over full temperature range
(-40°C to 85°C)
0.8
0.7
0.6
0.5
0.4
0.3
V IN = 1.5V
V IN = 2.5V
V IN = 3.6V
V IN = 4.5V
V IN = 5.5V
Applications
Cellular phones
Handheld devices
0.2
0.1
Typical Application Circuit
0.0
LCD Display
000E+0
20E-3
40E-3
60E-3
80E-3
100E-3
I OUT (A)
Typical Application Circuit
Logic Control or GND
4
SHDN
SC1462
VOUT
5
V OUT
C OUT
V IN
C IN
3.3 μ F
1
VIN
C+
6
C BUCKET
3.3 μ F
2
GND
C-
3
3.3 μ F
December 12, 2005
1
www.semtech.com
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