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參數(shù)資料
| 型號： | LM2788 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter |
| 中文描述： | 一二零毫安高效降壓型開關電容電壓轉換器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 372K |
| 代理商： | LM2788 |
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: 32μA operating
unloaded and 0.1μA 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 1μF
flying capacitors and two 10μF 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: 32μA
n
Shutdown supply current: 0.1μA
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
L
2002 National Semiconductor Corporation
DS200444
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2788C-1.5 WAF | 制造商:Texas Instruments 功能描述: |
| LM2788C-1.8 E WAF | 制造商:Texas Instruments 功能描述: |
| LM2788C-2.0 WAF | 制造商:Texas Instruments 功能描述: |
| LM2788MM-1.5 | 制造商:Texas Instruments 功能描述:CONVERTER BUCK 120MA SMD MSOP8 |
| LM2788MM-1.5/NOPB | 功能描述:IC REG BUCK SWITCHED CAP 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應商設備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
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