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SC631ULTRT
P1-P3
P4-P6
P7-P9
P10-P12
P13-P14
SC631
4
Par
ameter
Symbol
Condition
Min
T
yp
Max
Units
EN Input High T
hreshold
V
IH
V
IN
= 5.5V
1.6
V
EN Input Low
Threshold
V
IL
V
IN
= 2.7V
0.4
V
EN Input High Current
I
IH
V
IN
= 5.5V
2
µA
EN Input Low Curr
ent
I
IL
V
IN
= 5.5V
2
µA
Open-Loop Output Resistance
R
OUT
1x mode
0.25
1.5x mode,
V
IN
= 3.7V
2.85
2x mode,
V
IN
= 3.1V
2.9
Mode T
ransition Voltage
(2)
V
TRANS 1X
I
OUT
= 200mA
4.41
V
V
TRANS 1.5X
I
OUT
= 200mA
3.31
V
F
ault Protection
Short-
Circuit Current
I
SC
V
OUT
= 0V
, I
OUT
= I
IN
300
600
980
mA
Input Current Limit
I
LIMIT
V
OUT
> 2V
, 1x mode
0.6
1.2
2.0
A
V
OUT
> 2V
, 1.5x and 2x modes
1.2
2.0
2.8
A
V
OUT
≤ 2V
, I
OUT
= I
IN
700
mA
Over T
emperature
T
OTP
Rising Threshold
165
°C
T
HYS
Hysteresis
(3)
20
°C
Electrical Charac
teristics (continued)
Notes:
(1)
Thermal limitation is dependent upon the thermal performance of the printed circuit board in support of the package standard of 68° C/W
.
(2)
V
oltage at the IN pin where a mode transition takes place in the charge pump with
V
IN
falling.
(3)
Guaranteed by design - not test
ed in production.
SC631
5
T
ypical Characteristics
Load Regulation
25
20
15
10
5
0
0
90
180
270
360
450
O
utput Curr
ent (mA
)
V
OUT
= 4.4V, V
IN
= 4.2V
T
A
=85°C
T
A
=25°C
T
A
=-
40
°
C
Output V
olta
ge Va
riation
—
Δ
V
LOAD
(m
V)
-15
-10
-5
0
5
10
15
20
25
2.7
3.1
3.
5
3
.9
4
.3
4.
7
5.1
5
.5
Out
put
Vo
ltag
e V
ar
i
ati
on
—
Δ
V
LINE
(mV)
V
OUT
= 4.4V,
I
OUT
= 1mA
Input Vol
tage (V)
3.
6V, 0m
V
85
°C
25
°
C
-40°
C
Line Regulation
PSRR versus F
requency — 2x Mode
PSRR versus F
requency — 1.5x Mode
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
Frequency [Hz]
Gain [dB]
V
IN
= 3.6V, V
OUT
= 4.4V, I
OUT
= 50mA
C
IN
=C
OUT
=22µF (0805)
C
1
=C
2
=2.2µF (0603)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
Frequency [Hz]
Gain [dB]
V
IN
= 2.9V, V
OUT
= 4.4V, I
OUT
= 50mA
C
IN
=C
OUT
=22µF (0805)
C
1
=C
2
=2.2µF (0603)
SC631
6
T
ypical Characteristics (continued)
E
ciency
—
10mA
E
ciency
—
50mA
E
ciency
—
200mA
E
ciency
—
100mA
E
ciency
—
400mA
E
ciency
—
300mA
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
V
IN
(V)
Efficiency(%)
V
OUT
= 4.4V, I
OUT
= 10mA
1.5x Mode
2x Mode
Mode
Transition
Hysteresis
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
Efficiency(%)
V
OUT
= 4.4V, I
OUT
= 50mA
V
IN
(V)
1.5x Mode
2x Mode
Mode
Transition
Hysteresis
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
Efficiency(%)
V
IN
(V)
V
OUT
= 4.4V, I
OUT
= 100mA
1.5x Mode
Mode
Transition
Hysteresis
2x Mode
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
Efficiency(%)
V
OUT
= 4.4V, I
OUT
= 200mA
V
IN
(V)
2x Mode
1.5x Mode
Mode
Transition
Hysteresis
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
Efficiency(%)
V
OUT
= 4.4V, I
OUT
= 300mA
1.5x Mode
Mode
Transition
Hysteresis
2x Mode
V
IN
(V)
50
60
70
80
90
100
2.7
3.0
3.3
3.6
3.9
4.2
V
IN
(V)
Efficiency(%)
V
OUT
= 4.4V, I
OUT
= 400mA
1.5x Mode
2x Mode
P1-P3
P4-P6
P7-P9
P10-P12
P13-P14
SC631ULTRT
Mfr. #:
Buy SC631ULTRT
Manufacturer:
Semtech
Description:
Switching Voltage Regulators 3.6V CHARGE PUMP REG
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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Ups
TNT
EMS
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