20
LTC1142/LTC1142L/LTC1142HV
PART NUMBER DESCRIPTION COMMENTS
LTC1530 High Power Synchronous Step-Down Controller SO-8 with Current Limit. No R
SENSE
Required
LTC1625 No R
SENSE
TM
Current Mode Synchronous Step-Down Controller Above 95% Efficiency, Needs No R
SENSE
, 16-Lead SSOP Package
Fits SO-8 Footprint
LTC1628 Dual High Efficiency 2-Phase Synch Step-Down Controller Constant Frequency, Standby 5V and 3.3V LDOs, 3.5V ≤ V
IN
≤ 36V
LTC1703 Dual 550kHz Synch 2-Phase Sw Reg Controller w/ Mobile VID LTC1702 w/ 5-Bit Mobile VID for Mobile Pentium
®
Processor Systems
LTC1709 2-Phase, 5-Bit Desktop VID Synch Step-Down Controller Current Mode, V
IN
to 36V, I
OUT
Up to 42A
LTC1736 Synchronous Step-Down Controller with 5-Bit Mobile VID Control Fault Protection, PowerGood, 3.5V to 36V Input, Current Mode
LTC1753 5-Bit Desktop VID Programmable Synch Switching Reg 1.3V to 3.5V Programmable Output Using Internal 5-Bit DAC
LTC1873 Dual Synchronous Switching Regulator with 5-Bit Desktop VID 1.3V to 3.5V Programmable Core Output Plus I/O Output
LTC1929 2-Phase, Synchronous High Efficiency Converter Current Mode Ensures Accurate Current Sensing,
V
IN
Up to 36V, I
OUT
Up to 40A
No R
SENSE
is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corporation.
LINEAR TECHNOLOGY CORPORATION 1995
1142fd LT/TP 0600 2K REV D • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
Figure 16. LTC1142HV-ADJ Output Current vs Trickle Charge Set Resistance
(R
X
) for the Circuit in Figure 15 Using a 0.1Ω Current Sense Resistor R
SENSE1
RELATED PARTS
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTIO
U
TYPICAL APPLICATIO S
U
G28 SSOP 1098
0.13 – 0.22
(0.005 – 0.009)
0
° – 8°
0.55 – 0.95
(0.022 – 0.037)
5.20 – 5.38**
(0.205 – 0.212)
7.65 – 7.90
(0.301 – 0.311)
1234
5
6
7
8 9 10 11 12 1413
10.07 – 10.33*
(0.397 – 0.407)
2526 22 21 20 19 18
17
16 1523242728
1.73 – 1.99
(0.068 – 0.078)
0.05 – 0.21
(0.002 – 0.008)
0.65
(0.0256)
BSC
0.25 – 0.38
(0.010 – 0.015)
NOTE: DIMENSIONS ARE IN MILLIMETERS
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.152mm (0.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.254mm (0.010") PER SIDE
*
**
G Package
28-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
SET RESISTANCE (kΩ)
0
1400
1200
1000
800
600
400
200
0
3
1142 F16
12 4
OUTPUT CURRENT (mA)
