SC1456(2000) Ver la hoja de datos (PDF) - Semtech Corporation
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SC1456 Datasheet PDF : 5 Pages
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PRELIMINARY - June 15, 2000
BLOCK DIAGRAM
Dual 150mA ULTRA LOW DROPOUT,
LOW NOISE REGULATOR
SC1456
PIN CONFIGURATION
Top View MSOP-10
VOLTAGE OPTIONS
Replace X in the part number (SC1456XIMS) by the letter shown
below for the corresponding voltage option:
X
VOUTA (V)
VOUTB (V)
A
2.5
2.5
B
2.8
2.8
C
3.0
3.0
D
3.3
3.3
PIN DESCRIPTIONS
Pin # Pin Name Description
1
EN1 Active high enable pin for device 1. Connect to VIN1 if not being used.
2
GND Ground pin. Can be used for heatsinking if needed. Electrically connected to pin 7.
3
SET1 Connecting this pin to ground results in the internally preset value for VOUT1. Connecting to an
external resistor divider changes VOUT1 to:
VOUT 1
=
1.250
•
1 +
R1
R2
4
OUT2 Regulator output for device 2, sourcing up to 150mA
5
IN2 Supply input pin for device 2.
6
EN2 Active high enable pin for device 2. Connect to VIN2 if not being used.
7
GND Ground pin. Can be used for heatsinking if needed. Electrically connected to pin 2.
8
SET2 Connecting this pin to ground results in the internally preset value for VOUT2. Connecting to an
external resistor divider changes VOUT2 to:
VOUT 2
= 1.250
• 1 +
R1
R2
9
OUT1 Regulator output for device 1, sourcing up to 150mA
10
IN1 Supply input pin for device 1.
4
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
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