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LTC1553CG#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
22
LTC1553
PACKAGE DESCRIPTION
U
Dimension in inches (millimeters) unless otherwise noted.
G Package
20-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
G20 SSOP 0595
0.005 – 0.009
(0.13 – 0.22)
0° – 8°
0.022 – 0.037
(0.55 – 0.95)
0.205 – 0.212**
(5.20 – 5.38)
0.301 – 0.311
(7.65 – 7.90)
1234
5
6
7
8910
0.278 – 0.289*
(7.07 – 7.33)
1718 14 13 12 1115161920
0.068 – 0.078
(1.73 – 1.99)
0.002 – 0.008
(0.05 – 0.21)
0.0256
(0.65)
BSC
0.010 – 0.015
(0.25 – 0.38)
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH 
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD 
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
23
LTC1553
PACKAGE DESCRIPTION
U
Dimension in inches (millimeters) unless otherwise noted.
SW Package
20-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
S20 (WIDE) 0396
NOTE 1
0.496 – 0.512*
(12.598 – 13.005)
20
19 18
17
16
15
14 13
1
23
4
5
6
78
0.394 – 0.419
(10.007 – 10.643)
910
1112
0.037 – 0.045
(0.940 – 1.143)
0.004 – 0.012
(0.102 – 0.305)
0.093 – 0.104
(2.362 – 2.642)
0.050
(1.270)
TYP
0.014 – 0.019
(0.356 – 0.482)
TYP
0° – 8° TYP
NOTE 1
0.009 – 0.013
(0.229 – 0.330)
0.016 – 0.050
(0.406 – 1.270)
0.291 – 0.299**
(7.391 – 7.595)
× 45°
0.010 – 0.029
(0.254 – 0.737)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
24
LTC1553
1553f LT/TP 0198 4K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1997
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
(408) 432-1900
FAX: (408) 434-0507
●
TELEX: 499-3977
●
www.linear-tech.com
PWRGD
FAULT
OT
VID0 TO VID4
OUTEN
COMP
SS
SGND SENSE
Q1*
Q2*
V
CC
PV
CC
V
IN
12V
V
CC
5V
L
O
†
4µH
18A
LTC1553
G1
0.1µF
1553 F14
C
C
0.022µF
R
C
6.2k
5.6k
5.6k
C
SS
0.1µF
0.1µF
0.1µF
1N5245B
15V
10µF
GND
I
MAX
5.1k
C
IN
**
1000µF
× 4
v
OUT
C
OUT
††
330µF
× 6
+
+
C1
180pF
+
10Ω
5
NC
PENTIUM
II
SYSTEM
* MOTOROLA MTD20N03HDL
** SANYO 16MV1000GX
†
COILTRONICS CTX02-13199
††
AVX TPSE337M006R0100
I
FB
G2
1N5248B
18V
1N5817

20Ω
Figure 14. External Clock Synchronized 12V to 1.8V-3.5V Application
PART NUMBER DESCRIPTION COMMENTS
LTC1142 Current Mode Dual Step-Down Switching Regulator Controller Dual Version of LTC1148
LTC1148 Current Mode Step-Down Switching Regulator Controller Synchronous, V
IN
≤ 20V
LTC1149 Current Mode Step-Down Switching Regulator Controller Synchronous, V
IN
≤ 48V, for Standard Threshold FETs
LTC1159 Current Mode Step-Down Switching Regulator Controller Synchronous, V
IN
≤ 40V, for Logic Threshold FETs
LTC1266 Current Mode Step-Up/Down Switching Regulator Controller Synchronous N- or P-Channel FETs, Comparator/Low-Battery Detector
LTC1430 High Power Step-Down Switching Regulator Controller Synchronous N-Channel FETs, Voltage Mode
LTC1435 High Efficiency Low Noise Synchronous Step-Down Drive Synchronous N-Channel, V
IN
≤ 36V
Switching Regulator
LTC1438 Dual High Efficiency Low Noise Synchronous Step-Down Dual LTC1435 with Power-On Reset
Switching Regulator
RELATED PARTS
TYPICAL APPLICATION
U
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC1553CG#PBF

Mfr. #:
Buy LTC1553CG#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 5-B Progmable Sync Sw Reg Cntr for Penti
Lifecycle:
New from this manufacturer.
Delivery:
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