3A Low-Voltage Low-Dropout Regulator
LM39300/39301/39302
FEATURES
TO263-3L / TO220-3L
(39300-x.x Fixed only)
●3A minimum guaranteed output current
●500mV typical dropout at 3A
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.5V conversion
●1% initial accuracy
1. In
2. Gnd
3. Out
1
3
●Low ground current
●Current limiting and thermal shutdown
●Reversed-battery protection
●Reversed-leakage protection
●Fast transient response
3
1
TO263-5L / TO220-5L
(39301-x.x & 39302 only)
●TTL/CMOS compatible enable pin => LM39301
●Error flag output - LM39301 only
●Adjustable version - LM39302 only
●TO-263 and TO-220 packaging
●Moisture Sensitivity Level 3
1. En
2. In
3. Gnd
1
4. Out
1
5. Flg or Adj
5
5
PIN DESCRIPTION
APPLICATIONS
CMOS-compatible control input.
Logic high = enable, logic
Enable
(Input)
●LDO linear regulator for PC add-in cards
●High-efficiency linear power supplies
●Multimedia and PC processor supplies
●SMPS post regulator
●Low-voltage microcontrollers
●StrongARM™ processor supply
Logic low or open = Shutdown
Supply (Input): +16V maximum supply
IN
GND
OUT
FLG
ADJ
Ground pin and TAB are internally connected.
Regulator Output
Flag (Output): Open-collector error flag output.
Adjustment Input: Feedback input.
ORDERING INFORMATION
Marking
Device
Package
TO-263
TO-220
TO-263
TO-220
TO-263
TO-220
LM39300R- X.X
LM39300T-X.X
LM39301R-X.X
LM39301T-X.X
LM39302R-Adj
LM39302T-Adj
LM39300-X.X
LM39300-X.X
LM39301-X.X
LM39301-X.X
LM39302-Adj
LM39302-Adj
DESCRIPTION
The LM39300, LM39301 and LM39302 are 3.0A
low-dropout linear voltage regulators that provide
a low voltage, high-current output with a
minimum of external components.
The LM39300/1 offers extremely low dropout
(typically 400mV at 3.0A) and low ground current
(typically 36mA at 3.0A).
* X.X = Fixed Vout = 1.5V, 1.8V, 2.5V, 3.3V, 5.0V
The LM39300/1/2 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 LM39300/1/2 to pro-vide 2.5V from a supply as low as 3V.
The LM39300/1/2 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 LM39300/1 is
fully protected with over current limiting,thermal shutdown, reversed-battery protection, reversed-leakage
protection, and reversed-lead insertion. The LM39301 offers a TTL-logic compatible enable pin and an
error flag that indicates under voltage and over current conditions. Offered in fixed voltages, the
LM39300/1/2 comesin the TO-220 and TO-263 packages and is an ideal upgrade to older, NPN-based
linear voltage regulators.
2008 - Ver 1.0
HTC
183
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