UNISONIC TECHNOLOGIES CO., LTD
UCV676/A
400mA LOW-DROP VOLTAGE
REGULATOR
DESCRIPTION
1
LINEAR INTEGRATED CIRCUIT
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.
TO-263-5
1
TO-252-4
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
UCV676L-TQ5-R
UCV676L-TQ5-T
UCV676AL-TQ5-R
UCV676AL-TQ5-T
UCV676L-TN4-R
UCV676L-TN4-T
UCV676AL-TN4-R
UCV676AL-TN4-T
Halogen Free
UCV676G-TQ5-R
UCV676G-TQ5-T
UCV676AG-TQ5-R
UCV676AG-TQ5-T
UCV676G-TN4-R
UCV676G-TN4-T
UCV676AG-TN4-R
UCV676AG-TN4-T
Package
TO-263-5
TO-263-5
TO-263-5
TO-263-5
TO-252-4
TO-252-4
TO-252-4
TO-252-4
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
UCV676L-TN4-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) T: Tube, R: Tape Reel
(2) TN4: TO-252-4, TQ5: TO-263-5
(3) L: Lead Free, G: Halogen Free
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1 of 9
QW-R102-051. B
UCV676/A
PIN DESCRIPTION
PIN NAME
V
IN
INH
GND
NC/VA
V
OUT
PIN NO.
1
2
3
4
5
LINEAR INTEGRATED CIRCUIT
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
BLOCK DIAGRAM
Fixed Voltage Version
V
IN
Current Limit and
Saturation Sense
-
EA
+
V
OUT
Bandgap
Reference
Thermal
Shutdown
INH
GND
NC
Adjustable Voltage Version
V
IN
Current Limit and
Saturation Sense
-
EA
+
V
OUT
Bandgap
Reference
Thermal
Shutdown
INH
GND
VA
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2 of 9
QW-R102-051. B
UCV676/A
ABSOLUTE MAXIMUM RATING
(Note 1)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
45
V
Input Peak Transient Voltage
V
IN
45
V
Inhibit INH Voltage
V
INH
45
V
Voltage Adjust Input VA
V
VA
10
V
Output Voltage
V
OUT
40
V
Ground Current
I
q
100
mA
Input Voltage Operating Range (Note 2)
V
I
V
OUT
+0.5V or 4.5V~40
V
Junction Temperature
T
J
-40~150
°C
Storage Temperature
T
STG
-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 V
IN
, operation is assured, but not
specified. Wider limits may apply. Thermal dissipation must be observed closely.
ELECTRICAL CHARACTERISTICS
(V
IN
=13.5V, T
J
=25°C, unless otherwise noted.)
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
For UCV676/A-1.8
PARAMETER
OUTPUT
5.0mA<I
OUT
<400mA,
4.5V<V
IN
<28V
5.0mA<I
OUT
<200mA,
4.5V<V
IN
< 40V
V
OUT
=90% V
OUT(TYP)
I
q
=I
I
-I
OUT
, V
INH
=0V
I
OUT
=1.0mA
I
q
=I
I
- I
OUT
I
OUT
=250mA
I
OUT
=400mA
V
IN
=4.5V, I
OUT
=250mA,
V
DR
=V
IN
-V
OUT
I
OUT
= 5.0mA~400mA
ΔV
IN
=12V~32V, I
OUT
=5.0mA
f
r
=100Hz, V
r
= 0.5V
PP
1.728
1.728
400
-
-
-
-
-
-
-
-
-
V
OUT
≥V
OUT(MIN)
V
OUT
≤0.1V
V
INH
=5.0V
1.8
1.8
700
-
130
10
25
-
10
2.5
60
0.5
1.872
1.872
1100
10
220
15
35
2.772
35
25
-
-
-
-
400
-
-
-
-
-
-
-
-
-
-
-
700
-
130
10
25
-
3.0
4.0
70
0.5
-
-
1100
10
200
15
35
-
20
15
-
-
V
V
mA
μA
μA
mA
mA
V
mV
mV
dB
mV/K
SYMBOL
TEST CONDITIONS
Output Voltage
V
OUT
I
OUT
I
q
Output Current Limitation
Quiescent Current
(Sleep Mode)
Quiescent Current
I
q
Dropout Voltage
V
DR
Load Regulation
ΔV
OUT
Line Regulation
ΔV
OUT
Power Supply Ripple
PSRR
Rejection
Temperature coefficient of
ΔV
OUT
/ΔT
V
OUT
INHIBIT
Inhibit Voltage, Output High
V
INH
Inhibit Voltage, Output Low
V
INH
(Off)
Input Current
I
INH
THERMAL SHUTDOWN
Thermal Shutdown
T
SD
Temperature (Note 2)
-
0.5
5.0
2.8
1.7
10
3.5
-
20
-
1.8
5.0
2.3
2.2
10
2.8
-
20
V
V
μA
°C
I
OUT
=5.0mA
150
-
210
150
-
210
UNISONIC TECHNOLOGIES CO., LTD
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3 of 9
QW-R102-051. B
UCV676/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676/A-2.5
PARAMETER
OUTPUT
5.0mA<I
OUT
<400mA,
4.5V<V
IN
<28V
5.0mA<I
OUT
<200mA,
4.5V<V
IN
<40V
V
OUT
=90% V
OUT(TYP)
I
q
=I
I
-I
OUT
, V
INH
=0V
I
OUT
=1.0mA
I
q
=I
I
- I
OUT
I
OUT
=250mA
I
OUT
=400mA
V
IN
=4.5V, I
OUT
=250mA,
V
DR
=V
IN
-V
OUT
I
OUT
= 5.0mA~400mA
ΔV
IN
=12V~32V, I
OUT
=5.0mA
f
r
=100Hz, V
r
= 0.5V
PP
2.4
2.4
400
-
-
-
-
-
-
-
-
-
V
OUT
≥V
OUT(MIN)
V
OUT
≤0.1V
V
INH
=5.0V
2.5
2.5
700
-
130
10
25
-
10
2.5
60
0.5
2.6
2.6
1100
10
220
15
35
2.1
35
25
-
-
-
-
400
-
-
-
-
-
-
-
-
-
-
-
700
-
130
10
25
-
3.0
4.0
70
0.5
-
-
1100
10
200
15
35
-
20
15
-
-
V
V
mA
μA
μA
mA
mA
V
mV
mV
dB
mV/K
SYMBOL
TEST CONDITIONS
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
Output Voltage
V
OUT
I
OUT
I
q
Output Current Limitation
Quiescent Current
(Sleep Mode)
Quiescent Current
I
q
Dropout Voltage
V
DR
Load Regulation
ΔV
OUT
Line Regulation
ΔV
OUT
Power Supply Ripple
PSRR
Rejection
Temperature coefficient of
ΔV
OUT
/ΔT
V
OUT
INHIBIT
Inhibit Voltage, Output High
V
INH
Inhibit Voltage, Output Low
V
INH
(Off)
Input Current
I
INH
THERMAL SHUTDOWN
Thermal Shutdown
T
SD
Temperature (Note 2)
-
0.5
5.0
2.8
1.7
10
3.5
-
20
-
1.8
5.0
2.3
2.2
10
2.8
-
20
V
V
μA
°C
I
OUT
=5.0mA
150
-
210
150
-
210
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R102-051. B
UCV676/A
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For UCV676/A-3.3
PARAMETER
OUTPUT
5.0mA<I
OUT
<400mA,
4.5V<V
IN
<28V
5.0mA<I
OUT
<200mA,
4.5V<V
IN
<40V
V
OUT
=90% V
OUT(TYP)
I
q
=I
I
-I
OUT
, V
INH
=0V
I
OUT
=1.0mA
I
q
=I
I
- I
OUT
I
OUT
=250mA
I
OUT
=400mA
V
IN
=4.5V, I
OUT
=250mA,
V
DR
=V
IN
-V
OUT
I
OUT
= 5.0mA~400mA
ΔV
IN
=12V~32V, I
OUT
=5.0mA
f
r
=100Hz, V
r
= 0.5V
PP
3.168
3.168
400
-
-
-
-
-
-
-
-
-
V
OUT
≥V
OUT(MIN)
V
OUT
≤0.1V
V
INH
=5.0V
3.3
3.3
700
-
130
10
25
-
10
2.5
60
0.5
3.432 3.234
3.432 3.234
1100
10
220
15
35
1.332
35
25
-
-
400
-
-
-
-
-
-
-
-
-
3.3
3.3
700
-
130
10
25
-
3.0
4.0
70
0.5
3.366
3.366
1100
10
200
15
35
-
20
15
-
-
V
V
mA
μA
μA
mA
mA
V
mV
mV
dB
mV/K
SYMBOL
TEST CONDITIONS
UCV676
MIN TYP MAX
UCV676A
UNIT
MIN TYP MAX
Output Voltage
V
OUT
I
OUT
I
q
Output Current Limitation
Quiescent Current
(Sleep Mode)
Quiescent Current
I
q
Dropout Voltage
V
DR
Load Regulation
ΔV
OUT
Line Regulation
ΔV
OUT
Power Supply Ripple
PSRR
Rejection
Temperature coefficient of
ΔV
OUT
/ΔT
V
OUT
INHIBIT
Inhibit Voltage, Output High
V
INH
Inhibit Voltage, Output Low
V
INH
(Off)
Input Current
I
INH
THERMAL SHUTDOWN
Thermal Shutdown
T
SD
Temperature (Note 2)
-
0.5
5.0
2.8
1.7
10
3.5
-
20
-
1.8
5.0
2.3
2.2
10
2.8
-
20
V
V
μA
°C
I
OUT
=5.0mA
150
-
210
150
-
210
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R102-051. B
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