Datasheet

UNISONIC TECHNOLOGIES CO., LTD
LP5951
Preliminary
LINEAR INTEGRATED CIRCUIT
HIGH INPUT VOLTAGE, LOW
QUIESCENT CURRENT,
150mA LDO REGULATOR
„
DESCRIPTION
The UTC LP5951 is a low ground current linear regulator which
operates with input voltage from 6.5V ~ 25V and delivers output
current up to 150mA. Typical dropout voltage is only 450mV at
150mA loading.
The UTC LP5951 has many protection functions including over
temperature and current limit which prevent the device from
thermal over-load and current over-load.
„
HSOP-8
FEATURES
* Wide Operating Voltage : 6.5V~25V
* Ultra Low Ground Current :120μA
* High Output Accuracy : ±2% over temperature
* Excellent Load/Line Transient
* Low Dropout Voltage : 450mv @ 150mA
* Built-in Current Limit Protection
* Built-in Over Temperature Protection
* Zero Shutdown Current
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LP5951L-xx-SH2-R
LP5951G-xx-SH2-R
LP5951L-xx-SH2-T
LP5951G-xx-SH2-T
Note: xx: Output Voltage, refer to Marking Information.
LP5951L-xx-SH2-R
Package
Packing
HSOP-8
HSOP-8
Tape Reel
Tube
(1)Packing Type
(1) R: Tape Reel, T: Tube
(2)Package Type
(2) SH2: HSOP-8
(3)Output Voltage Code
(3) xx: Refer to Marking Information
(4)Lead Free
(4) G: Halogen Free, L: Lead Free
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LP5951
„
Preliminary
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
Date Code
HSOP-8
LP5951
AD :ADJ
Voltage Code
„
PIN CONFIGURATION
„
PIN DESCRIPTION
PIN NO.
1
2, 3, 6
4
5
7
8
PIN NAME
VOUT
NC
ADJ
EN
GND
VIN
UTC
XX
G: Halogen Free
L: Lead Free
Lot Code
DESCRIPTION
output pin
No Connection
ADJ: output feedback pin
ON/OFF pin, low=output ON; high=output OFF
Ground
Input pin
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www.unisonic.com.tw
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LP5951
„
Preliminary
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
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„
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.3~+27
V
Feedback Voltage
VFB
-1.5~+27
V
Shutdown Voltage
VSHDN
-0.3~+27
V
Power Dissipation
PD
Internally Limited
W
Junction Temperature
TJ
+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.
„
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
„
SYMBOL
θJA
θJC
RATINGS
50
20
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over VIN=VOUT+2.5V, CIN=1µF, COUT=2.2mF,TA=-40°C ~ 85°C.
Typical values refer to TA=25°C.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Input Voltage
VIN
6.5
25
V
Output Voltage Accuracy
VOUT
-2
2
%
Output Voltage Range
3
20
V
75
120
140
μA
IOUT=0.1mA
Quiescent Current
IQ
IOUT=150mA
8
12
22
mA
Load Current Range
IOUT
0
150
mA
Reference Voltage
VREF
-2% 1.235 +2%
V
Line Regulation
ΔVOUT
VOUT+2.5V<VIN<25V, IOUT=1mA
0.1
0.2
%
Load Regulation
ΔVOUT
0.1mA<IOUT<150mA
0.2
0.5
%
50
80
150
IOUT=0.1mA
mV
Dropout Voltage
VD
IOUT=150mA
380
450
600
PROTECTION
Over Temperature Shutdown
OTS
150
°C
Circuit Current Limit
ILIMIT
VIN=VOUT +2.5V
250
350
500
mA
Short Current
ISHORT
VOUT=0V
50
mA
SHUTDOWN
Input High Voltage
2
VEN
V
Input Low Voltage
0.7
EN pin Input Bias Current
IEN
VEN=25V
450
600
μA
Shutdown Supply Current
IQSHDN
EN=High, VIN=19V
0.1
1
mA
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Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
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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www.unisonic.com.tw
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