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SC2738IMSTRT

P1-P3P4-P6P7-P9P10-P12P13-P13
102004 Semtech Corp. www.semtech.com
SC2738
PRELIMINARYPOWER MANAGEMENT
Quiescent Current vs. Junction Temperature
vs. Input Voltage
Standby Current vs. Junction Temperature
vs. Input Voltage
Start Threshold vs.
Junction Temperature
Enable Input Threshold Voltage
vs. Junction Temperature
Reference Voltage vs.
Junction Temperature
Drive Pin Output Current (Sourcing) at Startup
vs. Junction Temperature vs. Input Voltage
Typical Characteristics
0
100
200
300
400
500
600
700
800
900
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
Q
(µA)
Both V
EN
= 5V
Both V
ADJ
< V
BG
V
IN
= 5V
V
IN
= 12V
0.01
0.1
1
10
100
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
Q(OFF)
(µA)
V
IN
= 12V
V
IN
= 5V
Both V
EN
= 0V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
UVLO
(V)
V
IN
rising
V
IN
falling
0.490
0.492
0.494
0.496
0.498
0.500
0.502
0.504
0.506
0.508
0.510
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
ADJ
(mV)
V
IN
= V
EN
= 5V
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
IH/L
(V)
V
IN
= 5V
V
IH
V
IL
0
2
4
6
8
10
12
14
16
18
20
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
DRV
(µA)
V
IN
= 12V
V
EN
= 5V
V
ADJ
< V
TH(PGD)
V
IN
= 5V
112004 Semtech Corp. www.semtech.com
SC2738
POWER MANAGEMENT
Drive Pin Output Current (Sourcing) vs.
Junction Temperature vs. Input Voltage
Drive Pin Output Current (Sinking) vs.
Junction Temperature vs. Input Voltage
Typical Characteristics (Cont.)
Drive Pin Output Voltage (Full On) vs.
Junction Temperature vs. Input Voltage
Under Voltage Trip Threshold
vs. Junction Temperature
Power Good Threshold vs.
Junction Temperature
Power Good Logic Low Output Voltage
vs. Junction Temperature
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
DRV
(mA)
V
EN
= 5V
V
ADJ
< V
BG
V
IN
= 12V
V
IN
= 5V
0
200
400
600
800
1000
1200
-50 -25 0 25 50 75 100 125
T
J
(°C)
I
DRV
(µA)
V
EN
= 5V
V
ADJ
> V
BG
V
IN
= 5V
V
IN
= 12V
0
1
2
3
4
5
6
7
8
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
DRV
(V)
V
EN
= 5V
I
DRV
= 0mA
V
ADJ
< V
BG
V
IN
= 12V
V
IN
= 5V
-60
-58
-56
-54
-52
-50
-48
-46
-44
-42
-40
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
TH(UV)
(%V
ADJ
)
V
IN
= V
EN
= 5V
-15.0
-12.5
-10.0
-7.5
-5.0
-2.5
0.0
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
TH(PGD)
(%V
ADJ
)
V
IN
= V
EN
= 5V
Startup only
Normal operation
0
25
50
75
100
125
150
175
200
-50 -25 0 25 50 75 100 125
T
J
(°C)
V
PGD
(mV)
V
IN
= V
EN
= 5V
V
ADJ
= 0.4V
I
PGD
= -1mA
122004 Semtech Corp. www.semtech.com
SC2738
PRELIMINARYPOWER MANAGEMENT
Output Rise Time At Startup vs. Soft Start
Capacitance vs. Input Voltage
Typical Characteristics (Cont.)
0.1
1
10
100
0.1 1 10 100
C
DRV
(nF)
t
r(OUT)
(ms)
V
EN
= 5V
T
J
= 25°C
V
OUT
= 1.05V
C
OUT
= 100µF, 25m
Ω
I
OUT
= 0A
MOSFET = IRF7311
V
IN
= 5V
V
IN
= 12V
V
IN
= 5V, 1.2V in to 1.05V out
I
OUT
= 0.01A to 2.51A to 0.01A
C
OUT
= 2 x 100µF, 25mΩ
Trace 1: V
OUT
, 20mV/div., offset 1V
Trace 2: V
DRV
, 2V/div.
Trace 3: 1.2V in, 50mV/div., offset 1V
Trace 4: load FET drain
Timebase: 20µs/div.
Load rise/fall times ≥ 35A/µs
Load Transient Response, No Passive Droop
V
IN
= 5V, 1.2V in to 1.05V out
I
OUT
= 0.01A to 2.51A to 0.01A
C
OUT
= 1 x 100µF, 25mΩ
R
DROOP
= 20mΩ
Trace 1: V
OUT
, 20mV/div., offset 1V
Trace 2: not connected
Trace 3: 1.2V in, 50mV/div., offset 1V
Trace 4: load FET drain
Timebase: 20µs/div.
Load rise/fall times ≥ 35A/µs
Load Transient Response, With Passive Droop
P1-P3P4-P6P7-P9P10-P12P13-P13

SC2738IMSTRT

Mfr. #:
Buy SC2738IMSTRT
Manufacturer:
Semtech
Description:
Linear Voltage Regulators ULTRA LOW O/P VOLT DL FET CNTL
Lifecycle:
New from this manufacturer.
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