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參數(shù)資料
| 型號： | LM2787 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Low Noise Regulated Switched Capacitor Voltage |
| 中文描述： | 低噪聲穩(wěn)壓開關(guān)電容電壓 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 214K |
| 代理商： | LM2787 |
LM2787
Low Noise Regulated Switched Capacitor Voltage
Inverter in micro SMD
General Description
The LM2787 CMOS Negative Regulated Switched Capacitor
Voltage Inverter delivers a very low noise adjustable output
for an input voltage in the range of +2.7V to +5.5V. Four low
cost capacitors are used in this circuit to provide up to 10mA
of output current. The regulated output for the LM2787 is
adjustable between 1.5V and 5.2V. The LM2787 operates
at 260 kHz (typical) switching frequency to reduce output
resistance and voltage ripple. With an operating current of
only 400 μA (charge pump power efficiency greater than
90% with most loads) and 0.05 μA typical shutdown current,
the LM2787 provides ideal performance for cellular phone
power amplifier bias and other low current, low noise nega-
tive voltage needs. The device comes in a small 8-Bump
micro SMD package.
Features
n
Inverts and regulates the input supply voltage
n
Small 8-Bump micro SMD package
n
91% typical charge pump power efficiency at 10mA
n
Low output ripple
n
Shutdown lowers Quiescent current to 0.05 μA (typical)
Applications
n
Wireless Communication Systems
n
Cellular Phone Power Amplifier Biasing
n
Interface Power Supplies
n
Handheld Instrumentation
n
Laptop Computers and PDA’s
Typical Application Circuit and Connection Diagram
10131325
8-Bump micro SMD (Top View)
10131302
August 2002
L
2002 National Semiconductor Corporation
DS101313
www.national.com
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| LM2787BPX | Low Noise Regulated Switched Capacitor Voltage |
| LM2787BP | Low Noise Regulated Switched Capacitor Voltage |
| LM2788MM-1.5 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter |
| LM2788MM-2.0 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter |
| LM2788MMX-1.5 | 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2787AUP E WAF | 制造商:Texas Instruments 功能描述: |
| LM2787AUPN E WAF | 制造商:Texas Instruments 功能描述: |
| LM2787BP | 制造商:Texas Instruments 功能描述:INVERTER REG SW CAP REG SMD 2787 |
| LM2787BP/NOPB | 功能描述:IC REG SWITCHD CAP INV ADJ 8USMD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(guān):- 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(yīng)商設(shè)備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
| LM2787BPEV | 功能描述:電源管理IC開發(fā)工具 EVAL UNIT FOR LM2787 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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