參數(shù)資料
型號(hào): LTC2924CGN
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: Quad Power Supply Sequencer
中文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封裝: 0.150 INCH, PLASTIC, SSOP-16
文件頁(yè)數(shù): 12/16頁(yè)
文件大?。?/td> 190K
代理商: LTC2924CGN
LTC2924
12
2924f
APPLICATIU
W
U
U
Figure 8. Cascading Three LTC2924s to Fully Sequence Up to 12 Power Supplies
Cascade Handshaking
When two or more LTC2924 chips are cascaded together
they communicate using a combination of levels and
pulses which do not look like the normal output of a DONE
pin nor input to an ON pin.
Do not connect any other
components to the node between the DONE and ON pins
.
When laying out multiple LTC2924s in the cascaded
configuration, keep the parasitic capacitance on this node
below 75pF.
Connecting Unused OUT and IN Pins
Figure 9 shows how to connect unused OUT and IN pins
on the LTC2924. Unused OUT-IN pairs must be connected
together to ensure proper operation.
TMR
HYS/CFG
ON
IN1
IN2
IN3
IN4
V
CC
GND
PGT
OUT1
OUT2
OUT3
OUT4
DONE
LTC2924
V
CC
FAULT
V
CC
V
CC
DONE
10k
10k
FAULT
2924 F08
TMR
HYS/CFG
ON
IN1
IN2
IN3
IN4
V
CC
GND
PGT
OUT1
OUT2
OUT3
OUT4
DONE
LTC2924
R
HYS
R
HYS
FAULT
TMR
HYS/CFG
ON
IN1
IN2
IN3
IN4
V
CC
GND
PGT
OUT1
OUT2
OUT3
OUT4
DONE
LTC2924
ON
R
HYS
FAULT
Figure 7. Cascading Two LTC2924s to Fully Sequence Up to Eight Power Supplies
TMR
HYS/CFG
ON
IN1
IN2
IN3
IN4
V
CC
GND
PGT
OUT1
OUT2
OUT3
OUT4
DONE
LTC2924
V
CC
FAULT
V
CC
V
CC
DONE
10k
10k
FAULT
2924 F07
TMR
HYS/CFG
ON
IN1
IN2
IN3
IN4
V
CC
GND
PGT
OUT1
OUT2
OUT3
OUT4
DONE
LTC2924
ON
R
HYS
R
HYS
FAULT
Figure 9. Connecting Unused OUT and IN Pins
IN1
IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
LTC2924
2924 F09
PS2
PS1
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