SC338 Datasheet, PDF (4/14 Pages) Semtech Corporation – Ultra Low Output Voltage Dual Linear FET Controller

SC338(A)
POWER MANAGEMENT
Pin Configuration
Ordering Information
PRELIMINARY
Top View
Part Number⁽¹⁾
Output Voltage⁽²⁾ Package
SC338IMSTR⁽³⁾
SC338IMSTRT⁽³⁾⁽⁵⁾
Both outputs adjustable MSOP-10
from 0.5V to 3.3V
SC338AIMSTR⁽⁴⁾
SC338AIMSTRT⁽⁴⁾⁽⁵⁾
(MSOP-10)
Pin Descriptions
Notes:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
(2) V = 12V (0.5V to 1.8V for V = 5V).
IN
IN
(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 Pin Name Pin Function
1
DRV1 Output of regulator #1. Drives the gate of an N-channel MOSFET to maintain V_OUT1 set by R1 and R2.
2
ADJ1 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):
V = _OUT(MAX) 3.3V for V_IN = 12V, 1.8V for V_IN = 5V.
V_OUT1
=
0.5
•
1+

R1
R2


3
EN1 Active high enable control. Connect to IN if not being used. Do not allow to float.
4
PGD1 Power good signal output for V_OUT1. Open drain output pulls low when V_OUT1 is below (V_OUT1(NOM) -12%).
5
GND Ground.
6
PGD2 Power good signal output for V_OUT2. Open drain output pulls low when V_OUT2 is below (V_OUT2(NOM) -12%).
7
EN2 Active high enable control. Connect to IN if not being used. Do not allow to float.
8
ADJ2 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):
V = _OUT(MAX) 3.3V for V_IN = 12V, 1.8V for V_IN = 5V.
V_{OUT 2}
=
0.5 • 1+

R3
R4


9
DRV2 Output of regulator #2. Drives the gate of an N-channel MOSFET to maintain V_OUT2 set by R3 and R4.
10
IN
+5V or +12V supply.
 2004 Semtech Corp.
4
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