LM2936-3.3 Ultra-Low Quiescent Current 3.3V Regulator
June 2002
LM2936-3.3
Ultra-Low Quiescent Current 3.3V Regulator
General Description
The LM2936-3.3 ultra-low quiescent current regulator fea-
tures low dropout voltage and low current in the standby
mode. With less than 20 碌A(chǔ) quiescent current at a 100 碌A(chǔ)
load, the LM2936-3.3 is ideally suited for automotive and
other battery operated systems. The LM2936-3.3 retains all
of the features that are common to low dropout regulators
including a low dropout PNP pass device, short circuit pro-
tection, reverse battery protection, and thermal shutdown.
The LM2936-3.3 has a 40V maximum operating voltage
limit, a 鈭?0藲C to +125藲C operating temperature range, and
鹵
3% output voltage tolerance over the entire output current,
input voltage, and temperature range. The LM2936-3.3 is
available in a TO-92 package, a SO-8 surface mount pack-
age, as well as SOT-223 and TO-252 surface mount power
packages.
Features
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Ultra low quiescent current (I
Q
鈮?/div>
20 碌A(chǔ) for I
O
= 100 碌A(chǔ))
Fixed 3.3V, 50 mA output
鹵
2% Initial output tolerance
鹵
3% Output tolerance over line, load, and temperature
Dropout voltage typically 200 mV
@
I
O
= 50 mA
Reverse battery protection
鈭?0V reverse transient protection
Internal short circuit current limit
Internal thermal shutdown protection
40V operating voltage limit
60V operating voltage limit for LM2936HV
Shutdown pin available with LM2936BM package
Typical Application
10132401
* Required if regulator is located more than 2" from power supply filter capacitor.
*
*
Required for stability. Must be rated for 22 碌F minimum over intended operating temperature range. Effective series resistance (ESR) is critical, see
curve. Locate capacitor as close as possible to the regulator output and ground pins. Capacitance may be increased without bound.
Connection Diagrams
TO-252
SOT-223
10132425
10132426
Top View
Order Number LM2936DT-3.3
See NS Package Number TD03B
Top View
Order Number LM2936MP-3.3
See NS Package Number MA04A
漏 2002 National Semiconductor Corporation
DS101324
www.national.com
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