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| 型号： | LM2788MMX-1.8/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MSOP-8 |
| 文件页数： | 1/12页 |
| 文件大小： | 372K |
| 代理商： | LM2788MMX-1.8/NOPB |
LM2788
120mA High Efficiency Step-Down Switched Capacitor
Voltage Converter
General Description
The LM2788 switched capacitor step-down DC/DC con-
verter efficiently produces a 120mA regulated low-voltage
rail from a 2.6V to 5.5V input. Fixed output voltage options of
1.5V, 1.8V, and 2.0V are available. The LM2788 uses mul-
tiple fractional gain configurations to maximize conversion
efficiency over the entire input voltage and output current
ranges. Also contributing to high overall efficiency is the
extremely low supply current of the LM2788: 32A operating
unloaded and 0.1A in shutdown.
The optimal external component requirements of the
LM2788 solution minimize size and cost, making the part
ideal for Li-Ion and other battery powered designs. Two 1F
flying capacitors and two 10F bypass capacitors are all that
are required, and no inductors are needed.
The LM2788 also features noise-reducing soft-start circuitry,
short-circuit protection and over-temperature protection.
Features
n
Output voltage options:
2.0V ± 5%, 1.8V ± 5%, 1.5V ± 6%
n
120mA output current capability
n
Multi-Gain and Gain Hopping for Highest Possible
Efficiency - up to 90% Efficient
n
2.6V to 5.5V input range
n
Low operating supply current: 32A
n
Shutdown supply current: 0.1A
n
Thermal and short circuit protection
n
Available in an 8-Pin MSOP Package
Applications
n
Cellular Phones
n
Pagers
n
H/PC and P/PC Devices
n
Portable Electronic Equipment
n
Handheld Instrumentation
Typical Application Circuit
20044401
October 2002
LM2788
120mA
High
Efficiency
Step-Down
Switched
Capacitor
V
oltage
Converter
2002 National Semiconductor Corporation
DS200444
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2788MMX-2.0 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:120mA High Efficiency Step-Down Switched Capacitor Voltage Converter |
| LM2791 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Current Regulated Switched Capacitor LED Driver with Analog Brightness Control |
| LM2791B WAF | 制造商:Texas Instruments 功能描述: |
| LM2791LD-H | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Current Regulated Switched Capacitor LED Driver with Analog Brightness Control |
| LM2791LD-H/NOPB | 功能描述:IC LED DRIVR WHITE BCKLGT 10-LLP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:1 系列:- 恒定电流:- 恒定电压:- 拓扑:PWM，切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:642kHz 电源电压:2.7 V ~ 5.5 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-VFDFN 裸露焊盘 供应商设备封装:10-VSON 包装:剪切带 (CT) 工作温度:-30°C ~ 85°C 产品目录页面:1371 (CN2011-ZH PDF) 其它名称:BD1603NUV-E2CT |
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