LM39300/39301/39302
LM39300/39301/39302
3A Low-Voltage Low-Dropout Regulator
General Description
Features
The LM39300, LM39301, LM39302 are 3.0A LDO linear
voltage regulators that provide a low voltage, high-current
output with a minimum of external components. Utilizing
proprietary Super βeta PNP pass element, the LM39300/
• 3.0A minimum guaranteed output current
• 500mV maximum dropout voltage over temperature
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V conversion
39301/39302offersextremelylowdropout(typically400mVat • 1% initial accuracy
3.0A) and low ground current (typically 36mA at 3.0A).
• Low ground current
• Current limiting and Thermal shutdown
• Reversed-battery protection
• Reversed-leakage protection
• Fast transient response
• TO-263 and TO-220 packaging
• TTL/CMOS compatible enable pin (LM39301 only)
• Error flag output (LM39301 only)
The LM39300/1/2 is ideal for PC add-in cards that need to
convert from standard 3.3V to 2.5V or 2.5V to 1.8V. A
guaranteed maximum dropout voltage of 500mV over all
operating conditions allows the LM39300/1/2 to provide 2.5V
from a supply as low as 3V, and 1.8V from a supply as low as
2.5V. The LM39300/1/2 also has fast transient response for
heavy switching applications. The device requires only 47μF
of output capacitance to maintain stability and achieve fast
transient response
* Adjustable version (LM39302 only)
Applications
The LM39300/1/2 is fully protected with overcurrent 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 comes
in the TO-220 and TO-263 packages and is an ideal upgrade
to older, NPN-based linear voltage regulators.
• LDO linear regulator for PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Low-voltage microcontrollers
• StrongARM™ processor supply
The LM39302 is adjustable version.
Ordering Information
Park Number
LM39300T-X.X
LM39300S-X.X
LM39301T-X.X
LM39301S-X.X
LM39302T
Junction Temp. Range
-40ć to +125ć
-40ć to +125ć
-40ć to +125ć
-40ć to +125ć
-40ć to +125ć
-40ć to +125ć
Package
3-lead TO-220
3-lead TO-263
5-lead TO-220
5-lead TO-263
5-lead TO-220
5-lead TO-263
LM39302S
Note: 1) X.X =fixed voltage output: 1.5V,1.8V, 2.5V, 3.3V, 5.0V
2) LM39302: adjustable voltage
Typical Application
100kΩ
LM39300-2.5
LM39301-2.5
VIN
2.5V
IN
OUT
1.5V
47µF
VIN
3.3V
VOUT
2.5V
IN
OUT
ENABLE
SHUTDOWN
ERROR FLAG
OUTPUT
EN
IN
FLG
OUT
R1
(1.25V)
ENABLE
SHUTDOWN
EN
ADJ
GND
VIN
3.3V
VOUT
2.5V
GND
R2
47µF
GND
47µF
LM39300-X.X
LM39302
Vout=1.25Vx(1+R1/R2)
R1=R2(Vout/1.25 - 1), R1 could be up to 1M ohms
LM39301-X.X
地址: 南京市珠江路 88 号，新世界中心 B 座 4004 室, 邮编:210008
ADD.: RM. 4004, BLOCK B, NEW WORLD CENTER, NO. 88 ZHUJIANG ROAD, NANJING 210008, CHINA
电话(TEL.): (86)-25-68853600 传真(FAX): (86)-25-68853600-810
WEB-SITE: WWW.HN-ELEC.COM
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