參數(shù)資料
型號: LTC4216
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Ultralow Voltage Hot Swap Controller
中文描述: 超低電壓熱插拔控制器
文件頁數(shù): 14/24頁
文件大小: 277K
代理商: LTC4216
LTC4216
4216f
14
Figure 8. Normal Power-Up/Power-Down Sequence
capacitors. A second timing cycle starts at time point 11
when the FB pin voltage exceeds 0.6V and the voltage
across the sense resistor drops below 25mV.
R
E
S
E
T goes
high at the end of the second timing cycle (time point 12)
when TIMER reaches the V
TMR(TH)
threshold.
SENSEP
ON
TIMER
SS
GATE
V
OUT
RESET
V
CC
POWER GOOD
V
FB
> 0.6V
POWER BAD
V
FB
< 0.6V
(V
GATE
– V
OUT
) > V
GS(TH)
V
TMR(TH)
V
TMR(TH)
TRACKS SS RAMP
20μA
2μA
2μA
0.72V
0.4V
0.8V
10μA
10μA
1μA
1 2
3
4
5 6
7 8
9
CHECK FOR GATE,
FILTER, TIMER,
SS < 0.2V
CHECK FOR GATE, FILTER,
TIMER, SS < 0.2V AND FAULT HIGH
START
GATE
RAMP
10 11 12
13
PLUG-IN CYCLE
FIRST TIMING CYCLE
POWER-GOOD DELAY
SECOND TIMING CYCLE
4216 F08
ELECTRONIC CIRCUIT
BREAKER ARMED
RESET GOES HIGH
IN
RESET
MODE
ON GOES LOW
RESET PULLED LOW
DUE TO POWER BAD
START 2ND TIMING CYCLE
(CHECK TIMER < 0.2V AND
FAULT HIGH)
APPLICATIU
W
U
U
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