Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UCV676/A
LINEAR INTEGRATED CIRCUIT
400mA LOW-DROP VOLTAGE
REGULATOR

DESCRIPTION
The UTC UCV676/A is a low dropout voltage regulator with a
400mA output current used in harsh automotive environments. It
can be used in wide input voltage and operating temperature
ranges.
It has a high peak input voltage tolerance and reverse input
voltage protection. Built-in heat protection circuit, current limiting
circuit and inhibit control circuit. The UTC UCV676/A family is
available in TO-263-5 and TO-252-4 surface mount packages.
The output is stable over a wide output capacitance and ESR
range.

FEATURES
* 2.5V and 1.8V ±4% Output Voltage
* 3.3V, 5.0V, and Adjustable Voltage Version (from 2.5V~20V)
±4% or ±2% Output Voltage
* 400mA Output Current
* 500mV (max) Dropout Voltage (5.0V Output)
* Inhibit control input
* Very Low Current Consumption
* Fault Protection
- +45V Peak Transient Voltage
- Overcurrent
- Overheat

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UCV676L-xx-TQ5-R
UCV676G-xx-TQ5-R
UCV676L-xx-TQ5-T
UCV676G-xx-TQ5-T
UCV676L-xx-TN4-R
UCV676G-xx-TN4-R
UCV676L-xx-TN4-T
UCV676G-xx-TN4-T
UCV676AL-xx-TQ5-R
UCV676AG-xx-TQ5-R
UCV676AL-xx-TQ5-T
UCV676AG-xx-TQ5-T
UCV676AL-xx-TN4-R
UCV676AG-xx-TN4-R
UCV676AL-xx-TN4-T
UCV676AG-xx-TN4-T
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
Package
Packing
TO-263-5
TO-263-5
TO-252-4
TO-252-4
TO-263-5
TO-263-5
TO-252-4
TO-252-4
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
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QW-R102-051.D
UCV676/A

MARKING INFORMATION
PACKAGE
TO-252-4
TO-263-5

LINEAR INTEGRATED CIRCUIT
VOLTAGE CODE
MARKING
18 :1.8V
25 :2.5V
33 :3.3V
50 :5.0V
AD: ADJ
PIN DESCRIPTION
PIN NO.
1
2
3
PIN NAME
VIN
INH
GND
4
NC/VA
5
VOUT
DESCRIPTION
Input; Power supply
Inhibit; Set low-to inhibit
Ground
Not connected for fixed voltage version / Voltage Adjust Input for adjustable voltage
version; use an external voltage divider to set the output voltage
Output: Bypass with a capacitor to GND
UNISONIC TECHNOLOGIES CO., LTD
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2 of 10
QW-R102-051.D
UCV676/A

LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
Fixed Voltage Version
Adjustable Voltage Version
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QW-R102-051.D
UCV676/A

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
45
V
Input Peak Transient Voltage
VIN
45
V
Inhibit INH Voltage
VINH
45
V
Voltage Adjust Input VA
VVA
10
V
Output Voltage
VOUT
40
V
Ground Current
Iq
100
mA
Input Voltage Operating Range (Note 2)
VI
VOUT+0.5V or 4.5V~40
V
Junction Temperature
TJ
-40~150
°C
Storage Temperature
TSTG
-50~150
°C
Notes: 1. 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.
2. During the voltage range which exceeds the maximum tested voltage of VIN, operation is assured, but not
specified. Wider limits may apply. Thermal dissipation must be observed closely.

ELECTRICAL CHARACTERISTICS (VIN=13.5V, TJ=25°C, unless otherwise noted.)
For UCV676-1.8
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
UCV676
TYP
MAX
UNIT
OUTPUT
Output Voltage
VOUT
Output Current Limitation
Quiescent Current
(Sleep Mode)
IOUT
Iq
Quiescent Current
Iq
Dropout Voltage
Load Regulation
Line Regulation
Power Supply Ripple Rejection
Temperature coefficient of VOUT
INHIBIT
Inhibit Voltage, Output High
Inhibit Voltage, Output Low (Off)
Input Current
THERMAL SHUTDOWN
Thermal Shutdown Temperature
(Note 2)
VDR
∆VOUT
∆VOUT
PSRR
∆VOUT/∆T
5.0mA<IOUT<400mA,
4.5V<VIN<28V
5.0mA<IOUT<200mA, 4.5V<VIN<
40V
VOUT=90% VOUT(TYP)
1.8
1.872
V
1.728
1.8
1.872
V
400
700
1100
mA
10
μA
220
15
35
μA
mA
mA
2.772
V
10
2.5
60
0.5
35
25
mV
mV
dB
mV/K
2.8
1.7
10
3.5
20
V
V
μA
210
°C
Iq=II-IOUT, VINH=0V
IOUT=1.0mA
IOUT=250mA
IOUT=400mA
VIN=4.5V, IOUT=250mA,
VDR=VIN-VOUT
IOUT= 5.0mA~400mA
∆VIN=12V~32V, IOUT=5.0mA
fr=100Hz, Vr= 0.5VRMS
130
10
25
Iq=II - IOUT
VINH
VINH
IINH
VOUT≥VOUT(MIN)
VOUT≤0.1V
VINH=5.0V
0.5
5.0
TSD
IOUT=5.0mA
150
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
1.728
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QW-R102-051.D
UCV676/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676-2.5
PARAMETER
SYMBOL
TEST CONDITIONS
UCV676
MIN
TYP
MAX
UNIT
OUTPUT
Output Voltage
VOUT
Output Current Limitation
Quiescent Current
(Sleep Mode)
IOUT
Iq
Quiescent Current
Load Regulation
Line Regulation
Power Supply Ripple Rejection
Temperature coefficient of VOUT
INHIBIT
Inhibit Voltage, Output High
Inhibit Voltage, Output Low (Off)
Input Current
THERMAL SHUTDOWN
Thermal Shutdown Temperature
(Note 2)
2.5
2.6
V
2.4
2.5
2.6
V
400
700
1100
mA
10
μA
220
15
35
μA
mA
mA
2.1
V
Iq=II-IOUT, VINH=0V
130
10
25
10
2.5
60
0.5
35
25
mV
mV
dB
mV/K
VINH
VINH
IINH
VOUT≥VOUT(MIN)
VOUT≤0.1V
VINH=5.0V
3.5
0.5
5.0
2.8
1.7
10
20
V
V
μA
TSD
IOUT=5.0mA
150
210
°C
VDR
∆VOUT
∆VOUT
PSRR
∆VOUT/∆T
Iq=II - IOUT
UNISONIC TECHNOLOGIES CO., LTD
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2.4
IOUT=1.0mA
IOUT=250mA
IOUT=400mA
VIN=4.5V, IOUT=250mA,
VDR=VIN-VOUT
IOUT= 5.0mA~400mA
∆VIN=12V~32V, IOUT=5.0mA
fr=100Hz, Vr= 0.5VRMS
Iq
Dropout Voltage
5.0mA<IOUT<400mA,
4.5V<VIN<28V
5.0mA<IOUT<200mA,
4.5V<VIN<40V
VOUT=90% VOUT(TYP)
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QW-R102-051.D
UCV676/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676/A-3.3
PARAMETER
SYMBOL
TEST CONDITIONS
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
OUTPUT
Output Voltage
Output Current Limitation
Quiescent Current
(Sleep Mode)
Quiescent Current
Dropout Voltage
VOUT
IOUT
Iq
Iq
VDR
Load Regulation
∆VOUT
Line Regulation
∆VOUT
Power Supply Ripple
PSRR
Rejection
Temperature coefficient of
∆VOUT/∆T
VOUT
INHIBIT
Inhibit Voltage, Output High
VINH
Inhibit Voltage, Output Low
VINH
(Off)
Input Current
IINH
THERMAL SHUTDOWN
Thermal Shutdown
TSD
Temperature (Note 2)
5.0mA<IOUT<400mA,
4.5V<VIN<28V
5.0mA<IOUT<200mA,
4.5V<VIN<40V
VOUT=90% VOUT(TYP)
3.3
3.432 3.234
3.3
3.366
V
3.168
3.3
3.432 3.234
3.3
3.366
V
400
700
1100
700
1100
mA
10
μA
Iq=II-IOUT, VINH=0V
400
10
IOUT=1.0mA
IOUT=250mA
IOUT=400mA
VIN=4.5V, IOUT=250mA,
VDR=VIN-VOUT
IOUT= 5.0mA~400mA
∆VIN=12V~32V, IOUT=5.0mA
130
10
25
fr=100Hz, Vr= 0.5VRMS
60
70
dB
0.5
0.5
mV/K
Iq=II - IOUT
10
2.5
VOUT≥VOUT(MIN)
2.8
VOUT≤0.1V
0.5
1.7
VINH=5.0V
5.0
10
IOUT=5.0mA
150
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3.168
220
15
35
130
10
25
200
15
35
μA
mA
mA
1332
250
500
mV
35
25
3.0
4.0
20
25
mV
mV
3.5
2.3
1.8
2.2
20
5.0
10
210
150
2.8
V
V
20
μA
210
°C
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UCV676/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676/A-5.0
PARAMETER
SYMBOL
TEST CONDITIONS
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
4.8
5.0
5.2
4.9
5.0
5.1
V
4.8
5.0
5.2
4.9
5.0
5.1
V
400
700
1100
400
700
1100
mA
10
μA
OUTPUT
Output Voltage
Output Current Limitation
Quiescent Current
(Sleep Mode)
Quiescent Current
Dropout Voltage (Note 1)
VOUT
IOUT
Iq
Iq
VDR
Load Regulation
∆VOUT
Line Regulation
∆VOUT
Power Supply Ripple
PSRR
Rejection
Temperature coefficient of
∆VOUT/∆T
VOUT
INHIBIT
Inhibit Voltage, Output High
VINH
Inhibit Voltage, Output Low
VINH
(Off)
Input Current
IINH
THERMAL SHUTDOWN
Thermal Shutdown
TSD
Temperature (Note 2)
5.0mA<IOUT<400mA,
6.0V<VIN<28V
5.0mA<IOUT<200mA,
6.0V<VIN<40V
VOUT=90% VOUT(TYP)
Iq=II-IOUT, VINH=0V
IOUT=1.0mA
IOUT=250mA
IOUT=400mA
VIN=5.0V, IOUT=250mA,
VDR=VIN-VOUT
IOUT= 5.0mA~400mA
∆VIN=12V~32V, IOUT=5.0mA
130
10
25
220
15
35
130
10
25
200
15
35
μA
mA
mA
250
500
250
500
mV
10
2.5
35
25
3.0
2.5
20
25
mV
mV
fr=100Hz, Vr= 0.5VRMS
60
70
dB
0.5
0.5
mV/K
Iq=II - IOUT
VOUT≥VOUT(MIN)
2.8
VOUT≤0.1V
0.5
1.7
VINH=5.0V
5.0
10
IOUT=5.0mA
150
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10
3.5
2.3
1.8
2.2
20
5.0
10
210
150
2.8
V
V
20
μA
210
°C
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UCV676/A

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676/A-ADJ
PARAMETER
OUTPUT
Output Voltage, Adjustable
Version
Output Current Limitation
SYMBOL
AVOUT
IOUT
Quiescent Current
(Sleep Mode)
Iq
Quiescent Current
Iq
Dropout Voltage
VDR
TEST CONDITIONS
5.0mA<IOUT<400mA,
VOUT+1<VIN<40V, VIN> 4.5V
VOUT=90% VOUT(TYP)
(VOUT(TYP)=2.5V)
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
-4%
+4%
-2%
1100
400
400
700
Iq=II-IOUT, VINH=0V
IOUT=1.0mA
IOUT=250mA
IOUT=400mA
VIN>4.5V, IOUT=250mA,
VDR=VIN-VOUT
IOUT= 5.0mA~400mA
∆VIN=12V~32V, IOUT=5.0mA
Iq=II - IOUT
700
10
+2%
V
1100
mA
10
μA
130
10
25
220
15
35
130
10
25
200
15
35
μA
mA
mA
250
500
250
500
mV
Load Regulation
∆VOUT
10
35
3.0
20
mV
Line Regulation
∆VOUT
2.5
25
4.0
25
mV
Power Supply Ripple
PSRR fr =100Hz, Vr =0.5VRMS
60
70
dB
Rejection
Temperature coefficient of
∆VOUT/∆T
0.5
0.5
mV/K
VOUT
INHIBIT
Inhibit Voltage, Output High
VINH
VOUT≥VOUT(MIN)
2.8
3.5
2.3
2.8
V
Inhibit Voltage, Output Low
VINH
VOUT≤0.1V
0.5
1.7
1.8
2.2
V
(Off)
Input Current
IINH
VINH=5.0V
5.0
10
20
5.0
10
20
μA
THERMAL SHUTDOWN
Thermal Shutdown
TSD
IOUT=5.0mA
150
210 150
210
°C
Temperature (Note 2)
Notes: 1. Measured when the output voltage VOUT has dropped 100mV from the nominal valued obtained at
V=13.5V.
2. Guaranteed by design, not tested in production.
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www.unisonic.com.tw
8 of 10
QW-R102-051.D
UCV676/A
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
Fixed Voltage Version
Adjustable Voltage Version
INPUT
II
CI1
22µF
VIN 1
CI2
100nF
INH
2
5 VOUT
UTC
UCV676
UCV676A
IINH
3
COUT
22µF
4
GND
OUTPUT
IOUT
Cb*
R1
RL
VA
R2
VOUT=[ ( R1+R2 )×VREF ] / R2
* Required if usage of low ESR output capacitor CQ is demand.
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9 of 10
QW-R102-051.D
UCV676/A
Current Consumption, Ileak (mA)
CH1: 0.5V/div
TYPICAL CHARACTERISTICS
CH2: 0.01Vdiv

LINEAR INTEGRATED 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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