LTC1142-ADJ Linear Technology, LTC1142-ADJ Datasheet - Page 20

• Manufacturer Part Number: LTC1142-ADJ
• Description: Dual High Efficiency Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

Note: For additional high efficiency circuits, see Application Note 54.
PACKAGE DESCRIPTIO
LTC1142/LTC1142L/LTC1142HV
RELATED PARTS
PART NUMBER
LTC1143
LTC1147
LTC1148
LTC1149
LTC1159
LTC1174
LTC1265
LTC1266
LTC1267
LTC1574
20
TYPICAL APPLICATIONS
**
0.005 – 0.009
(0.13 – 0.22)
*
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
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
0.205 – 0.212**
(5.20 – 5.38)
0.022 – 0.037
(0.55 – 0.95)
DESCRIPTION
Dual Step-Down Switching Regulator Controller
Step-Down Switching Regulator Controller
Step-Down Switching Regulator Controller
Step-Down Switching Regulator Controller
Step-Down Switching Regulator Controller
Step-Down Switching Regulator with Internal 0.5A Switch
Step-Down Switching Regulator with Internal 1.2A Switch
Step-Up/Down Switching Regulator Controller
Dual High Efficiency Synchronous Switching Regulator
Step-Down Switching Regulator with Internal 0.5A Switch
and Schottky Diode
FAX
: [phone]
(R
Figure 16. LTC1142HV-ADJ Output Current vs Trickle Charge Set Resistance
X
0 – 8
) for the Circuit in Figure 15 Using a 0.1 Current Sense Resistor R
0.0256
U
(0.65)
TELEX
BSC
: 499-3977
U
0.010 – 0.015
N
(0.25 – 0.38)
1400
1200
1000
800
600
400
200
0
Dimensions in inches (millimeters) unless otherwise noted.
0
28-Lead Plastic SSOP (0.209)
(LTC DWG # 05-08-1640)
1
SET RESISTANCE (k )
G Package
2
COMMENTS
Dual Version of LTC1147
Nonsynchronous, 8-Pin, V
Synchronous, V
Synchronous, V
Synchronous, V
V
V
Synchronous N- or P-Channel FETs, Comparator/Low Battery Detector
V
V
IN
IN
IN
IN
to 40V
0.002 – 0.008
(0.05 – 0.21)
18.5V, Comparator/Low Battery Detector
13V, Comparator/Low Battery Detector
18.5V, Comparator
3
0.068 – 0.078
(1.73 – 1.99)
1142 F16
IN
IN
IN
4
20V
48V, for Standard Threshold FETs
40V, for Logic Level FETs
28
1 2 3 4 5 6 7 8 9 10 11 12
27
IN
26
25
16V
24
SENSE1
(10.07 – 10.33)
0.397 – 0.407*
23
22 21 20 19 18 17 16 15
LINEAR TECHNOLOGY CORPORATION 1995
LT/GP 1196 5K REV C • PRINTED IN USA
13
14
G28 SSOP 0694
0.301 – 0.311
(7.65 – 7.90)