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參數(shù)資料
| 型號(hào)： | LMS5258MFX-2 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150mA, Cap, Low Dropout Voltage Regulator with Power Good |
| 中文描述： | 150毫安，帽，低壓差線性穩(wěn)壓器的電源良好 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 515K |
| 代理商： | LMS5258MFX-2 |
LMS5258
150mA, μCap, Low Dropout Voltage Regulator with
Power Good
General Description
The LMS5258 is a μCap, precise CMOS voltage regulator
with power good output.
It provides up to 150mA and consumes a typical of 10nA in
shutdown mode. The LMS5258 output stage is designed
with a push pull output for faster transient response.
The LMS5258 is optimized to work with low value, low cost
ceramic capacitors. The output typically require only 1μF of
output capacitance for stability. The enable pin can be tied to
V
IN
for easy device layout.
The LMS5258 is designed for portable, battery powered
equipment applications with small space requirements.
The LMS5258 is available in a 5-pin SOT-23 package. Per-
formance is specified for the 40C to +125C temperature
range and is available in a fixed 1.2V. For other output
voltage options, please contact National Semiconductor.
Features
n
Power good indicator
n
Stability with low ESR capacitors
n
Low ground current: 120μA
n
150mA output current
n
"Zero" shutdown mode current
n
Fast transient response
n
Auto Discharge
n
Thermal shutdown
n
Current limiting
n
TTL-Logic-controlled enable input
n
Pin-to-pin replacement for Mic
5258
Applications
n
Processor power-up sequencing
n
Laptop, notebook and palm top computer
n
PCMCIA V
CC
and V
PP
regulation switching
Typical Application
20042419
Pin Description
Pin Number
1
2
3
Pin Name
V
IN
GND
EN
Pin Function
Input Voltage
Ground
Enable Input Logic,
Logic High = Enabled
Logic Low = Shutdown
(Do not leave open)
Power Good Output
Output Voltage
4
5
PG
V
OUT
February 2003
L
2003 National Semiconductor Corporation
DS200424
www.national.com
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