LTC2923 Linear Technology, LTC2923 Datasheet - Page 20

• Manufacturer Part Number: LTC2923
• Description: Power Supply Tracking Controller
• Manufacturer: Linear Technology

RELATED PARTS
LTC2923
TYPICAL APPLICATIO S
PART NUMBER
LTC1645
LTC2920
LTC2921/LTC2922
LTC2925
LT
LTC4230
LTC4253
Hot Swap is a trademark of Linear Technology Corporation.
20
R
R
R
R
TB1
TA1
®
TB
TA
4220
3.3V
3.3V
R
R
R
R
138k
100k
ONB
ONA
R
R
TB2
TA2
TB
TA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
ON
RAMPBUF
TRACK1
TRACK2
ON
RAMPBUF
TRACK1
TRACK2
V
V
CC
CC
Daisy-Chained Application
DESCRIPTION
Dual Hot Swap
Power Supply Margining Controller
Power Supply Tracker with Input Monitors
Multiple Power Supply Tracking Controller
Dual Supply Hot Swap Controller
Triple Hot Swap Controller with Multifunction
Current Control
– 48V Hot Swap Controller and Supply Sequencer
GATE
LTC2923
LTC2923
0.1µF
0.1µF
GATE
GND
GND
●
FAX: [phone]
C
10nF
GATE
RAMP
RAMP
FB1
FB2
FB1
FB2
TM
Controller
U
R
R
R
R
2923 TA03
FB = 1.235V OUT
FB = 0.8V
FB = 1.235V OUT
FB = 0.8V
FA2
FA
FA1
FA
●
DC/DC
DC/DC
DC/DC
DC/DC
R
R
R
R
www.linear.com
IN
FB1
IN
FB2
IN
IN
FB
FB
OUT
OUT
3.3V
SLAVE1
2.5V
SLAVE2
1.8V
SLAVE1
1.5V
SLAVE2
COMMENTS
Operates from 1.2V to 12V, Allows Supply Sequencing
Single or Dual Versions, Symmetric as Symmetric High and Low Margining
Includes 3 (LTC2921) or 5 (LTC2922) Remote Sense Switches
Up to 4 Supplies, Status and Fault Pins, Slave Supply Shutdown, Remote
Sense Switch
±2.7V to ±16.5V, Supply Tracking Mode
1.7V to 16.5V, Active Inrush Limiting, Fast Comparator
Floating Supply from –15V, Active Current Limiting,
Enables Three DC/DC Converters
R
R
TB1
TA1
3.3V
R
R
138k
100k
R
R
ONB
ONA
TB2
TA2
V
ON
RAMPBUF
TRACK1
TRACK2
High Voltage Supply Application
CC
GATE
LTC2923
0.1µF
GND
C
10nF
GATE
RAMP
FB1
FB2
© LINEAR TECHNOLOGY CORPORATION 2003
LT/TP 1104 1K REV A • PRINTED IN USA
www.DataSheet4U.com
R
R
2923 TA04
FB = 1.235V OUT
FB = 0.8V
FA2
FA1
DC/DC
DC/DC
R
R
IN
FB1
IN
FB2
OUT
12V
SLAVE1
5V
SLAVE2
2923fa