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MIC5258 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 150mA UCap CMOS LDO Regulator w/Power Good | |||
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MIC5258
Micrel
MIC5258
150mA µCap CMOS LDO Regulator w/Power Good
Final Information
General Description
The MIC5258 is an efficient, precise CMOS voltage regulator
with power good output. The MIC5258 offers better than 3%
initial accuracy, and constant ground current (typically
100µA)over load .
The MIC5258 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
Key features include current limit, thermal shutdown, a push-
pull output for faster transient response, and an active clamp
to speed up device turnoff. Available in the IttyBitty⢠SOT-23-5
package, the MIC5258 is a fixed 1.2V regulator.
Features
⢠Power Good indicator
⢠Load independent, ultralow ground current: 100µA
⢠150mA output current
⢠Current limiting
⢠Thermal shutdown
⢠Tight load and line regulation
⢠âZeroâ off-mode current
⢠Stability with low-ESR capacitors
⢠Fast transient response
⢠TTL-Logic-controlled enable input
Applications
⢠Processor power-up sequencing
⢠Laptop, notebook, and palmtop computers
⢠PCMCIA VCC and VPP regulation/switching
Ordering Information
Part Number
Marking Voltage
MIC5258-1.2BM5
LN12
1.2
Other voltages available. Contact Micrel for details.
Junction Temp. Range*
â40°C to +125°C
Package
SOT-23-5
Typical Application
47k
VIN
MIC5258-x.xBM5
1
5
2
Enable
3
4
Shutdown
EN
EN (pin 3) may be
connected directly
to IN (pin 1).
VOUT
COUT
PG
Low-Noise Regulator Application
IttyBitty is a trademark of Micrel, Inc.
Micrel, Inc. ⢠1849 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 944-0970 ⢠http://www.micrel.com
September 2001
1
MIC5258
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