參數(shù)資料
型號: LTC4252-1
廠商: Linear Technology Corporation
英文描述: TRANS ARRAY NPN/PNP SS MINI-6P
中文描述: 負(fù)電壓熱插拔控制器
文件頁數(shù): 26/32頁
文件大?。?/td> 327K
代理商: LTC4252-1
LTC4252-1/LTC4252-2
26
425212f
APPLICATIU
Shutdown Cooling Cycle (LTC4252-2)
Figure 15 shows the timer behavior of the LTC4252-2. At
time point 2, TIMER exceeds V
TMRH
, GATE pulls down
immediately and the LTC4252 shuts down. TIMER starts
a shutdown cooling cycle by discharging TIMER with
5.8
μ
A to the V
TMRL
threshold. TIMER then charges with
5.8
μ
A to the V
TMRH
threshold. There are four 5.8
μ
A
W
U
U
Figure 15. Shutdown Cooling Timing Behavior of LTC4252-2 (All Waveforms are Referenced to V
EE
)
TIMER
GATE
SENSE
V
OUT
V
ACL
V
CB
SS
DRAIN
230
μ
A + 8 I
DRN
V
TMRH
V
TMRL
V
GATEL
230
μ
A + 8 I
DRN
V
IN
– V
GATEH
V
DRNL
4252-1/2 F15
V
DRNCL
PWRGD
58
μ
A
58
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
5.8
μ
A
GATE
START-UP
SHUTDOWN COOLING
CB
20 V
OS
20 (V
CB
+ V
OS
)
20 (V
ACL
+ V
OS
)
1
2
3 45
6
78 9 10
RETRY
CIRCUIT BREAKER TIMES OUT
discharge phases and three 5.8
μ
A charge phases in this
shutdown cooling cycle spanning time points 2 and 3. At
time point 3, the LTC4252 automatic retry occurs with a
start-up cycle. Good thermal management techniques are
highly recommended; power and thermal dissipation must
be carefully evaluated when implementing the automatic
retry scheme.
相關(guān)PDF資料
PDF描述
LTC4252 Negative 48V Hot Swap Controller
LTC4252-1CMS TRANS ARRAY PNP/PNP SS MINI-6P
LTC4252-1CMS8 TRANS ARRAY NPN/NPN SSMINI-6
LTC4252-1IMS TRANS ARRAY NPN/NPN SSMINI-6
LTC4252-1IMS8 TRANS ARRAY NPN/NPN SSMINI-6
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