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LTC4253IGN 数据表(PDF) 30 Page - Linear Technology

部件名 LTC4253IGN
功能描述  -48V Hot Swap Controller with Sequencer
PDF  32 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC4253IGN 数据表(HTML) 30 Page - Linear Technology

Back Button LTC4253IGN Datasheet HTML 24Page - Linear Technology LTC4253IGN Datasheet HTML 25Page - Linear Technology LTC4253IGN Datasheet HTML 26Page - Linear Technology LTC4253IGN Datasheet HTML 27Page - Linear Technology LTC4253IGN Datasheet HTML 28Page - Linear Technology LTC4253IGN Datasheet HTML 29Page - Linear Technology LTC4253IGN Datasheet HTML 30Page - Linear Technology LTC4253IGN Datasheet HTML 31Page - Linear Technology LTC4253IGN Datasheet HTML 32Page - Linear Technology  
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background image
LTC4253
30
4253f
APPLICATIO S I FOR ATIO
(Refer to Block Diagram)
12 3 4 5 6 7
7a
8 9
10
11
END OF INITIAL TIMING CYCLE
12 3 4
5 6
7
8 9
10
11
END OF INITIAL TIMING CYCLE
4253 F14
TIMER
GATE
SENSE
SS
DRAIN
PWRGD1
VTMRH
VACL
VCB
VTMRL
VTMRH
VTMRL
VGS(th)
VGS(th)
20 • (VACL + VOS)
20 • (VCB + VOS)
20 • VOS
5
µA
50
µA
50
µA
50
µA
VDRNCL
VDRNL
VIN – VGATEH
200
µA + 8 • IDRN
TIMER
GATE
SENSE
SS
DRAIN
PWRGD1
VACL
VCB
20 • (VACL + VOS)
20 • (VCB + VOS)
20 • VOS
5
µA
50
µA
50
µA
50
µA
VDRNCL
VDRNL
VIN – VGATEH
200
µA + 8 • IDRN
Figure 16. Soft-Start Timing (All Waveforms are Referenced to VEE)
R5
5.6k
R4
5.6k
R6
5.6k
PWRGD1
VIN
VIN
VEE
LTC4253
POWER
MODULE 1
PWRGD2
PWRGD3
EN3
EN2
OV
UV
RESET
DRAIN
SS
GATE
SQTIMER
SENSE
TIMER
EN
POWER
MODULE 2
EN
POWER
MODULE 3
EN
RIN
2.8k
16k(1/4W)/6
R3
31.6k
11
3
4
12
2
516
15
1
EN3
4253 F17
EN2
610
14
9
13
7
8
RC
10
Ω
RD 1M
RS
0.02
Ω
Q1
IRF530S
VIN
CC
18nF
R7
22
Ω
CT
0.33
µF
C1 10nF
CSQ
0.1
µF
CSS 68nF
R8
POWER
MODULE 1
OUTPUT
POWER
MODULE 2
OUTPUT
VIN
R9
+
C3
0.1
µF
C2
100
µF
CIN
1
µF
R1
402k
1%
RESET
–VSUPPLY
GND
SHORT
PIN
GND
R2
32.4k
1%
†MOC207
†
†
††
†
Figure 17. Power Limit Circuit Breaker Application
(16a) Without External CSS
(16b) With External CSS



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