SC338(A)
POWER MANAGEMENT
Pin Configuration
Top View
PRELIMINARY
Ordering Information
Part Number
(1)
SC338IMSTR
(3)
SC338IMSTRT
(3)(5)
SC338AIMSTR
(4)
SC338AIMSTRT
(4)(5)
Output Voltage
(2)
Both outputs adjustable
from 0.5V to 3.3V
P ackag e
MSOP-10
(MSOP-10)
Notes:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) V
IN
= 12V (0.5V to 1.8V for V
IN
= 5V).
(3) V
ADJ
is ±2.5% over -40°C
≤
T
A
≤
+85°C.
(4) V
ADJ
is ±1.5% over 0°C
≤
T
A
≤
+85°C.
(5) Lead free product. This product is fully WEEE and
RoHS compliant.
Pin Descriptions
Pin
1
2
Pin Name Pin Function
DRV1
A D J1
Output of regulator #1. Drives the gate of an N-channel MOSFET to maintain V
OUT1
set by R1 and R2.
Regulator #1 sense input. Used for sensing the output voltage for power good and under-voltage, and
to set the output voltage as follows (refer to application circuit on page 1):
R1
V
OUT1
=
0.5
•
1
+
R2
V
OUT(MAX)
= 3.3V for V
IN
= 12V, 1.8V for V
IN
= 5V.
Active high enable control. Connect to IN if not being used. Do not allow to float.
Power good signal output for V
OUT1
. Open drain output pulls low when V
OUT1
is below (V
OUT1(NOM)
-12%).
Ground.
Power good signal output for V
OUT2
. Open drain output pulls low when V
OUT2
is below (V
OUT2(NOM)
-12%).
Active high enable control. Connect to IN if not being used. Do not allow to float.
Regulator #2 sense input. Used for sensing the output voltage for power good and under-voltage, and
to set the output voltage as follows (refer to application circuit on page 1):
R3
V
OUT 2
=
0.5
•
1
+
V
OUT(MAX)
= 3.3V for V
IN
= 12V, 1.8V for V
IN
= 5V.
R4
Output of regulator #2. Drives the gate of an N-channel MOSFET to maintain V
OUT2
set by R3 and R4.
+5V or +12V supply.
3
4
5
6
7
8
EN1
PGD1
GND
PGD2
EN2
A D J2
9
10
DRV2
IN
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4
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SEMTECH [ SEMTECH CORPORATION ]
