Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LM39102
Preliminary
CMOS IC
1A LOW-VOLTAGE
LOW-DROPOUT REGULATOR

DESCRIPTION
SOP-8
The UTC LM39102 is a low-dropout linear voltage regulator that
provide low-voltage, high-current output.
The UTC LM39102 can be used in a wide field because of
Adjustable Output. UTC LM39102 is fully protected with over
current limiting, thermal shutdown, and reversed-battery protection.

FEATURES
HSOP-8
* Adjustable output voltages refer to 1.24V
* Dropout Voltage 410mV at 1A output
Ideal for 3.0V~2.5V conversion
Ideal for 2.5V~1.8V or 1.5V conversion
* A very low ground current (typically 12mA at 1A)
* ON/OFF control function
* 1% initial accuracy
* Built-in current limiting and thermal shutdown
* Reversed-battery protection
* Reversed-leakage protection
* Fast transient response

ORDERING INFORMATION
Ordering Number
LM39102G-S08-R
LM39102G-SH2-R

Package
SOP-8
HSOP-8
Packing
Tape Reel
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
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LM39102
Preliminary

PIN CONFIGURATION

PIN DESCRIPTION
PIN NO.
1
2
3
4
5, 6, 7, 8

PIN NAME
EN
IN
OUT
ADJ
GND
CMOS IC
DESCRIPTION
ON/OFF control terminal
Power Supply
Regulator output
Adjustment terminal: feedback input
Ground
BLOCK DIAGRAM
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LM39102

Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VIN
18V
V
Enable Voltage
VEN
+20
V
Junction Temperature
TJ
-40 ~ +125
°C
Storage Temperature
TSTG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

OPERATING RATINGS (Note 1)
PARAMETER
SYMBOL
RATINGS
Supply Voltage
VIN
+2.25 ~ +16
Enable Voltage
VEN
+16
Maximum Power Dissipation
PD
Note 2
Notes: 1. The device is not guaranteed to function outside its operating rating.
2. PD(max)=(TJ(max)-TA)+ θJA, where θJA -junction-to-ambient thermal resistance.

UNIT
V
V
THERMAL DATA
PARAMETER
Junction to Case
SYMBOL
SOP-8
HSOP-8
θJC
UNISONIC TECHNOLOGIES CO., LTD
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RATINGS
50
45
UNIT
°C/W
°C/W
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
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS
(VIN=VOUT+1V, VEN=2.25V, TJ=25°C, bold values indicate 0°C≤TJ≤+125°C, unless noted)
PARAMETER
SYMBOL
Output Voltage
Line Regulation
Load Regulation
Output Voltage Temperature
Coefficient (Note 1)
VOUT
TEST CONDITIONS
10mA
10mA≤IOUT≤1A, VOUT+1V≤VIN≤8V
IOUT=10mA, VOUT+1V≤VIN≤16V
VIN=VOUT+1V, 10mA≤IOUT≤1A
MIN
-1
-2
0.06
0.2
∆VOUT/∆T
IOUT=100mA, ∆VOUT=-1%
Dropout Voltage (Note 2)
VDO
IOUT=500mA, ∆VOUT=-1%
IOUT=750mA, ∆VOUT=-1%
Current Limit
Enable Input
Enable Input Voltage
IGND
IOUT(lim)
VEN
IOUT=100mA, VIN=VOUT+1V
IOUT=500mA, VIN=VOUT+1V
IOUT=750mA, VIN=VOUT+1V
IOUT=1A, VIN=VOUT+1V
VOUT=0V, VIN=VOUT+1V
Logic Low (Off)
Logic High (On)
VEN=2.25V
Enable Input Current
IEN
VEN=0.8V
Reference Voltage
Note 4
Adjust Pin Bias Current
MAX
1
2
0.5
1
100 ppm/°C
150
200
250
700
4
7
12
1.8
500
550
630
20
2.5
0.8
2.25
1
UNIT
%
%
%
%
40
275
330
410
IOUT=1A, ∆VOUT=-1%
Ground Current (Note 3)
TYP
15
30
75
2
4
1.228 1.240 1.252
1.215
1.265
1.203
1.277
40
80
120
mV
mV
mV
mV
mV
mV
µA
mA
mA
mA
A
V
V
µA
µA
µA
µA
V
V
V
nA
nA
Reference Voltage Temperature
20
ppm/°C
Coefficient (Note 1)
Adjust Pin Bias Current
0.1
99.2 nA/°C
Temperature Coefficient
Notes: 1. Output voltage temperature coefficient is ∆VOUT(worst case)+(TJ(max)-TJ(min)) where TJ(max) is +125°C and TJ(min)
is 0°C.
2. VDO=VIN-VOUT when VOUT decreases to 99% of its nominal output voltage with VIN=VOUT+1V. For output
voltages below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input
voltage being 2.25V. Minimum input operating voltage is 2.25V.
3. IGND is the quiescent current. IIN=IGND+IOUT.
4. VREF≤VOUT≤(VIN-1V), 2.25V≤VIN≤16V, 10mA≤IL≤1A.
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LM39102

Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
UTC LM39102
VIN
2.5V
OUT
IN
1.5V
R1
EN
ADJ
GND
+
R2
10µF
tantalum
1.5V/1A Adjustable Regulator
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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