SC1409 データシートの表示（PDF） - Semtech Corporation
部品番号
コンポーネント説明
メーカー
SC1409 Datasheet PDF : 8 Pages
| |||
June 28, 2000
BLOCK DIAGRAM
1 A Synchronous Switching Regulator SC1409
EN/SS
OC_DET
4.5V
UV LOCKOUT
-
I
+
-
+
2I
1.5V
AGND
SYNC/FSET
FB
THERMAL
SHUTDOWN
OSCILLATOR
VREF
SOFT
START
ERROR
AMP
-
+
+
-
S
Q
R
S
Q
R
R
Q
S
R
Q
S
1:800
VIN
ISET
+
-
SHOOT THRU
CONTROL
PHASE
60nS DELAY
PGND
PIN CONFIGURATION
Top View
SYNC/FSET
1
EN/SS
2
AGND
3
FB
4
8
ISET
7
VIN
6
PHASE
5
PGND
(8 LEAD SOIC)
PIN DESCRIPTION
Pin # Pin Name
Pin Function
1
SYNC/FSET Sets frequency, allows synchronization.
FSET = VIN, f = 500kHz
FSET = GND, f = 300kHz
2
EN/SS
Enable and Soft Start pin.
3
AGND
Analog ground.
4
FB
Output voltage feedback.
5
PGND
Device power ground.
6
PHASE
Power output to the inductor.
7
VIN
Input voltage.
8
ISET
Current limit programming input.
© 2000 SEMTECH CORP.
3
652 MITCHELL ROAD NEWBURY PARK CA 91320
Share Link: 