参数资料
| 型号： | SC632AULTRT |
| 厂商： | Semtech |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP 5V 8MLPD |
| 标准包装： | 1 |
| 类型： | 切换式电容器（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 2.95 V ~ 5.5 V |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 275mA |
| 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： | 8-UFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-MLPD（2x2） |
| 其它名称： | SC632AULDKR |
SC632A
1MHz Fixed 5.0V Output
Charge Pump Regulator
POWER MANAGEMENT
Features
Description
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Input voltage range — 2.95V to 5.5V
V OUT tolerance — 5.0V ±3%
Continuous output current — 275mA
Peak output current — 400mA
Three charge pump modes — x, .5x and 2x
Output ripple voltage — 50mV PP , typical
Short circuit, over-voltage, and over-temperature
protection
Soft-start functionality
Shutdown current — 0. μA, typical
Ultra thin package — 2 x 2 x 0.6 (mm)
The SC632A is a high-current voltage regulator using
Semtech’s proprietary low-noise charge pump technol-
ogy. The charge pump provides a low EMI solution
compared to inductive boost regulators. Performance is
optimized for use in single Li-Ion battery cell applications.
The regulator provides the performance of a linear, low
drop-out (LDO) voltage regulator when the input is greater
than 5.0V. Unlike an LDO, drop-out is avoided when the
input is less than 5.0V. Instead, a charge pump is activated
to provide voltage boost and the head-room needed for
voltage regulation.
? Lead-free and halogen-free
? WEEE and RoHS compliant
Applications
? Mobile phones
? Tablets
? USB On-The-Go
? Multi-LED backlit LCDs
? Compact flash/CF+ products
The SC632A’s charge pump has three modes of operation:
2x, .5x, and x modes. 2x and .5x are voltage boost
modes that deliver current to the load in each of two
phases. The x mode turns off the charge pump, deliver-
ing current through an LDO. Hysteresis is provided to
prevent chatter between charge pump modes. When
active, the charge pump provides low-ripple operation at
MHz. Typically the output ripple is 50mVpp at the
maximum continuous current rating of 275mA.
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Digital video cameras
DVI/HDMI ports
Wi-Fi base stations
Modems
Set-top boxes
A small 2.2μF capacitor is recommended for all four capaci-
tors. The full rated output current is provided when 2.2μF
is used for both bucket capacitors. At the output, a 2.2μF
capacitor decouples the load and provides smoothing for
mode transitions, while another 2.2μF is used to decouple
the input.
Typical Application Circuit
V BAT
C IN
2.2μF
IN
OUT
V OUT = 5.0V @ 275mA
C OUT
2.2μF
SC632A
Chip
enable
EN
GND
C1+
C1-
C2+
C2-
C 1
2.2μF
C 2
2.2μF
US Patent: 7,808,220
Revision .0
? 20 Semtech Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC632EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Fixed 5.0V Output Charge Pump Regulator |
| SC632UL.TRT | 制造商:SEMTECH 功能描述:I.C. |
| SC632ULTRT | 制造商:Semtech Corporation 功能描述:Charge Pump STPUP 5V 275mA 8-Pin MLPD-UT T/R 制造商:SEMTECH 功能描述:Simple charge pump buck-boost converter |
| SC633 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Fixed 5.3V Output Charge Pump Regulator |
| SC-63-3-5 | 功能描述:KNOB CLR/MATTE.625"DIA.250"SHAFT RoHS:是 类别:硬件，紧固件，配件 >> 旋钮 系列:SC 标准包装:1 系列:- 样式:圆柱形 类型:开槽 轴尺寸:0.250"（6.35mm） 直径:1.031"（26.19mm） 高度:0.688"（17.48mm） 指示灯:无指示灯 材质:塑料 颜色:黑 特点:8-32 号固定螺丝 |
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