LTC2920-1/LTC2920-2
16
292012fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2003
LT/LT 0505 REV A • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC1329-10/LTC1329-50 Micropower 8-Bit I
OUT
DAC in SO-8 10μA/50μA Sourcing, Pulse Mode or SPI Input
LTC1426 Micropower Dual 6-Bit PWM DAC Pulse Mode or Pushbutton Input
LTC1427-50 SMBus Micopower 10-Bit I
OUT
DAC in SO-8 50μA Sourcing, –15V to (V
CC
– 1.3V) Compliance
LTC1428-50 Micropower 8-Bit I
OUT
DAC in SO-8 50μA Sinking, Pulse Mode or SPI Input
LTC1663 Micropower 10-Bit V
OUT
DAC 2-Wire Interface, Rail-to-Rail Output, SOT-23 or MSOP
LTC2900-1/LTC2900-2 Quad Voltage Monitors in MSOP 16 User-Selectable Combinations, ±1.5% Threshold Accuracy
LTC2901-1/LTC2901-2 Quad Voltage Monitors with Watchdog 16 User-Selectable Combinations, Adjustable RST and Watchdog Timers
LTC2902-1/LTC2902-2 Quad Voltage Monitors with RST Disable 16 Selectable Combinations, RST Disable for Margining, Tolerance Select
LTC2921/LTC2922 Power Supply Tracker with Remote Sensing Three (LTC2921) or Five (LTC2922) Remote Sense Switches
LTC2923 Power Supply Tracking Controller Controls Two Supplies without Series FETs or a Third Supply with a Series FET
I
TH
TG
C
OSC
68pF
C
C
150pF
51pF
100pF
R
C
10k
C
SS
0.1μF
SENSE
–
SENSE
+
LTC1435A
1000pF
+
4.7μF
D
B
CMDSH-3
C
B
0.1μF
M2
Si4412DY
D1
MBRS140T3
L1
4.7μH
M1
Si4412DY
R
SENSE
0.025Ω
+
C
IN
22μF
35V
× 2
V
IN
4.5V TO 28V
+
C
OUT
100μF
6.3V
× 2
R1
3.57k
R2
2k
V
OUT
3.3V
4.5A
PGND
BG
C
OSC
V
IN
LTC2920
GND
I
M
R
S
IN
SYSTEM
CONTROLLER
THREE-STATE
GND
V
OSENSE
BOOST
2920-1/2 TA03
SGND
RUN/SS
SW
INTV
CC
21.5k
V
CC
V
CC
C
BYP
0.1μF
R
B
500Ω
3.3V Supply with ±0.165V (5%) Voltage Margining
12V Supply with 5% Margining
LTC2920-1
I
M1
V
CC
I
IN1
R
S1
1
5
3
GND
2
4
SYSTEM
CONTROLLER
THREE-STATE
GND
R
SET
188.3k
GND
V
IN
SW
SHDN FB
V
IN
5V
4
51
3
D1
L1
10μH
2
R1
113k
LT1930
2920-1/2 TA02
C2
4.7μF
C3*
10pF
R
S
113k
C
B
0.1μF
R2
13.3k
C1
2.2μF
V
OUT
12V
300mA
MARGIN ±5%
C1: TAIYO YUDEN X5R LMK212BJ225MG
C2: TAIYO YUDEN X5R EMK316BJ475ML
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
*OPTIONAL
C
S
0.01μF
SHDN
R
B
1k
TYPICAL APPLICATIO S
U
