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LMS5258MF-2 Datasheet

  • LMS5258MF-2

  • 150mA, Cap, Low Dropout Voltage Regulator with Power Good

  • 9頁

  • NSC

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LMS5258 150mA, 碌Cap, Low Dropout Voltage Regulator with Power Good
February 2003
LMS5258
150mA, 碌Cap, Low Dropout Voltage Regulator with
Power Good
General Description
The LMS5258 is a 碌Cap, 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 1碌F 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 鈭?0藲C to +125藲C temperature
range and is available in a fixed 1.2V. For other output
voltage options, please contact National Semiconductor.
Features
n
n
n
n
n
n
n
n
n
n
n
Power good indicator
Stability with low ESR capacitors
Low ground current: 120碌A(chǔ)
150mA output current
"Zero" shutdown mode current
Fast transient response
Auto Discharge
Thermal shutdown
Current limiting
TTL-Logic-controlled enable input
Pin-to-pin replacement for Mic
鈩?/div>
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
漏 2003 National Semiconductor Corporation
DS200424
www.national.com

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