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參數資料
| 型號： | LM2687MMX |
| 英文描述： | DC-to-DC Voltage Converter |
| 中文描述： | 型DC - DC電壓轉換器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 244K |
| 代理商： | LM2687MMX |
LM2685
Dual Output Regulated Switched Capacitor Voltage
Converter
General Description
The LM2685 CMOS charge-pump voltage converter oper-
ates as an input voltage doubler, +5V regulator and inverter
for an input voltage in the range of +2.85V to +6.5V. Five low
cost capacitors are used in this circuit to provide up to 50mA
of output current at +5V (
±
5%), and 15mA at 5V. The
LM2685 operates at a 130 kHz switching frequency to re-
duce output resistance and voltage ripple. With an operating
current of only 800μA (operating efficiency greater than 80%
with most loads) and 6μA typical shutdown current, the
LM2685 is ideal for use in battery powered systems. The de-
vice is in a small 14-pin TSSOP package.
Features
n
+5V regulated output
n
Inverts V
05
(+5V) to V
NEG
(5V)
n
Doubles input supply voltage
n
TSSOP-14 package
n
80% typical conversion efficiency at 25mA
n
Input voltage range of 2.85V to 6.5V
n
Independent shutdown control pins
Applications
n
Cellular phones
n
Pagers
n
PDAs
n
Handheld instrumentation
n
3.3V to 5V voltage conversion applications
Typical Application and Connection Diagram
Ordering Information
Order Number
Package Type
NSC Package
Drawing
MTC14
MTC14
Supplied As
LM2685MTC
LM2685MTCX
TSSOP-14
TSSOP-14
94 Units, Rail
2.5k Units, Tape and Reel
DS101100-1
DS101100-2
14-Pin TSSOP
May 2000
L
2000 National Semiconductor Corporation
DS101100
www.national.com
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| LM2681 | |
| LM2682 | |
| LM2682M | DC-to-DC Voltage Converter |
| LM2682MM | DC-to-DC Voltage Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2687MMX/NOPB | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| LM2694EVAL | 功能描述:電源管理IC開發(fā)工具 LM2694 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2694MT | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2694MT/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2694MTX | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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