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MIC5236_05 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – Low Quiescent Current μCap LDO Regulator | |||
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MIC5236
MIC5236
Micrel, Inc.
Low Quiescent Current µCap LDO Regulator
General Description
The MIC5236 is a low quiescent current, µCap low-dropout
regulator. With a maximum operating input voltage of 30V and
a quiescent current of 20µA, it is ideal for supplying keep-alive
power in systems with high-voltage batteries.
Capable of 150mA output, the MIC5236 has a dropout volt-
age of only 300mV. It can also survive an input transient of
â20V to +60V.
As a µCap LDO, the MIC5236 is stable with either a ceramic
or a tantalum output capacitor. It only requires a 1.0µF output
capacitor for stability.
The MIC5236 includes a logic compatible enable input and
an undervoltage error ï¬ag indicator. Other features of the
MIC5236 include thermal shutdown, current-limit, overvoltage
shutdown, load-dump protection, reverse leakage protections,
and reverse battery protection.
Available in the thermally enhanced SOIC-8 and MSOP-8, the
MIC5236 comes in ï¬xed 2.5V, 3.0V, 3.3V, 5.0V, and adjustable
voltages. For other output voltages, contact Micrel.
Features
⢠Ultra-low quiescent current (IQ = 20µA @IO = 100µA)
⢠Wide input range: 2.3V to 30V
⢠Low dropout:
230mV @50mA;
300mV @150mA
⢠Fixed 2.5V, 3.0V, 3.3V, 5.0V, and Adjustable outputs
⢠±1.0% initial output accuracy
⢠Stable with ceramic or tantalum output capacitor
⢠Load dump protection: â20V to +60V input transient
survivability
⢠Logic compatible enable input
⢠Low output ï¬ag indicator
⢠Overcurrent protection
⢠Thermal shutdown
⢠Reverse-leakage protection
⢠Reverse-battery protection
⢠High-power SOIC-8 and MSOP-8
Applications
⢠Keep-alive supply in notebook and
portable personal computers
⢠Logic supply from high-voltage batteries
⢠Automotive electronics
⢠Battery-powered systems
Typical Application
MIC5236
VIN
30V
IN OUT
EN ERR
GND
VOUT
3.0V/100µA
IGND = 20µA
Regulator with Low IO and Low IQ
MIC5236
VIN
5V
IN OUT
EN ADJ
GND
MIC5236
VIN
5V
IN OUT
EN ERR
VOUT
47k
3.0V/150mA
COUT
GND
VERR
Regulator with Error Output
VOUT
R1
3.0V/150mA
R2
Regulator with Adjustable Output
Micrel, Inc. ⢠2180 Fortune Drive ⢠San Jose, CA 95131 ⢠USA ⢠tel + 1 (408) 944-0800 ⢠fax + 1 (408) 474-1000 ⢠http://www.micrel.com
July 2005
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MIC5236
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