LTC2924 Linear Technology, LTC2924 Datasheet - Page 18

• Manufacturer Part Number: LTC2924
• Description: Quad Power Supply Sequencer
• Manufacturer: Linear Technology

LTC2924
TYPICAL APPLICATIO S
18
5V/DIV
5V/DIV
2V/DIV
2V/DIV
–5V
CONTROLLER
EARLY
Power-Up Sequence
SYSTEM
5V
3V
5V
10ms/DIV
0.1µF
0.1µF
0.1µF
0.1µF
100k
U
10k
150nF
1M
10k
Q1
2N3906 SOT-23
2924 TA07b
Precision Negative Rail Sequencer
Q2
150nF
5V
3.3V
–5V
DONE
TMR
ON
Q3
Q4
OUT1
OUT2
OUT3
OUT4
ON
DONE
FAULT
TMR
PGT
LTC2924
GND
V
CC
HYS/CFG
10k
IN1
IN2
IN3
IN4
–
+
0.1µF
5V/DIV
5V/DIV
2V/DIV
2V/DIV
LM321
1.36k
52.3k
11.8k
49.9k
2924 TA06a
Q1-Q4: IRL3714S
ALL RESISTORS 1%
7.68k
45.3k
Power-Down Sequence
7k
6.04k
1.69k
10ms/DIV
V
V
V
V
V
V
V
V
ON
OFF
ON
OFF
ON
OFF
ON
OFF
– 4.5V
= 2.79V
= 4.21V
= 3.32V
– 3.9V
= 2.73V
= 3.76V
= 2.80V
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2924 TA07c
5V
3.3V
–5V
DONE
TMR
ON
2924fa