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5A Low-Voltage Low-Dropout Regulator
LM39500/39501/39502
FEATURES
•5.0A minimum guaranteed output current
•400mV typical dropout voltage
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.5V conversion
•1% initial accuracy
•Low ground current
•Current limiting and thermal shutdown
•Reversed-battery protection
•Reversed-leakage protection
•Fast transient response
•TTL/CMOS compatible enable pin-LM39501 only
•Error flag output - LM39501 only
•Ceramic capacitor stable(See application information)
•Adjustable version - LM39502 only
APPLICATIONS
•Low-voltage Digatal Ics
•LDO linear regulator for PC add-in cards
•High-efficiency linear power supplies
•Multimedia and PC processor supplies
•SMPS post regulator
•Low-voltage microcontrollers
•Strong ARM™ processor supply
ORDERING INFORMATION
DESCRIPTION
HTC
TO-263
LM39500-X.X
LM39500R- X.X
TO-220
LM39502T-Adj
LM39502-Adj
LM39500T-X.X
TO-220
LM39501T-X.X
TO-220
ADJ
OUT
Device
Marking
LM39502R-Adj
Logic low or open = Shutdown
Supply (Input): +16V maximum supply
Flag (Output): Open-collector error flag output.
LM39501R-X.X
TO-263
LM39501-X.X
Regulator Output
LM39501-X.X
1
GND
FLG
Ground pin and TAB are internally connected.
LM39500-X.X
Adjustment Input: Feedback input.
Package
LM39502-Adj
TO-263
PIN DESCRIPTION
Enable
(Input)
IN
CMOS-compatible control input.
Logic high = enable, logic
* X.X = Fixed Vout = 1.5V, 1.8V, 2.5V, 3.3V, 5.0V
The LM39500/1/2 is ideal for PC Add-In cards that need to convert from standard 5V or 3.3V, down to
new, lower core voltages. A guaranteed maximum dropout voltage of 500mV over all operating conditions
allows the LM39500/1/2 to provide 2.5V from a supply as low as 3V. The LM39500 also has fast transient
response, for heavy switching applications. The device requires only 47F of output capacitance to maintain
stability and achieve fast transient responseThe LM39500/1/2 is fully protected with overcurrent
limiting,thermal shutdown, reversed-battery and reversed-lead in-sertion protection. The LM39501 offers a
TTL-logic-compat-ible enable pin and an error flag that indicates undervoltage and overcurrent
conditions. The LM39500/1/2 comes in the TO-220 and TO-263 packages and is an ideal upgrade to
older,NPN-based linear voltage regulators.
The LM39502 is adjustable version.
TO263-3L / TO220-3L
(39500-x.x Fixed only)
1. In
2. Gnd
3. Out
1. En
2. In
3. Gnd
4. Out
5. Flg or Adj
TO263-5L / TL220-5L
(39501-x.x & 39502 only)
The LM39500, LM39501 and LM39502 is a 5A
low-dropout linear voltage regulator that provides
a low-voltage, high-current output with a
minimum of external components. Utilizing Super
beta PNP pass element, The LM39500 offers
extremely low dropout (typically 400mV at 5A)
and low ground current (typically 70mA at 5A).


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