參數(shù)資料
型號: LTC4253ACGN#TRPBF
廠商: Linear Technology
文件頁數(shù): 24/34頁
文件大?。?/td> 383K
描述: IC HOT SWAP CONTRLR -48V 16-SSOP
標準包裝: 2,500
類型: 熱交換控制器
應用: 通用
內(nèi)部開關(guān):
電源電壓: 8.2 V ~ 14.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應商設(shè)備封裝: 16-SSOP
包裝: 帶卷 (TR)
LTC4253/LTC4253A
24
425353aff
For more information www.linear.com/4253
APPLICATIONS INFORMATION
Live Insertion with Short Pin Control of UV/OV
In the example shown in Figure 9, power is delivered
through long connector pins whereas the UV/OV divider
makes contact through a short pin. This ensures the power
connections are firmly established before the LTC4253/
LTC4253A are activated. At time point 1, the power pins
make contact and V
IN
 ramps through V
LKO
. At time point?,
the UV/OV divider makes contact and its voltage exceeds
Figure 9. Power-Up Timing with a Short Pin (All Waveforms Are Referenced to VEE)
GATE
START-UP
INITIAL TIMING
V
UVHI
V
LKO
V
GATEL
V
SQTMRH
V
SQTMRL
GND  V
EE
 OR
(48RTN)  (48V)
UV/OV
V
IN
TIMER
GATE
SENSE
UV CLEARS V
UVHI
(V
UV
 FOR THE LTC4253A), CHECK OV < V
OVHI
 (V
OV
 FOR THE LTC4253A), RESET < 0.8V, GATE < V
GATEL
,
SENSE < V
CB
, SS < 20 " V
OS
 AND TIMER < V
TMRL
V
OUT
1
2
3 4 5 6
7   8
9
TIMER CLEARS V
TMRL
, CHECK GATE < V
GATEL
, SENSE < V
CB
 AND SS < 20 " V
OS
SS
DRAIN
PWRGD1
A
B
PWRGD2
PWRGD3
SQTIMER
EN2
EN3
C
D
5礎(chǔ)
5礎(chǔ)
V
SQTMRH
4253 F09
V
SQTMRL
V
TMRH
V
ACL
V
CB
V
TMRL
20 " (V
ACL
 + V
OS
)
20 " (V
CB
 + V
OS
)
20 " V
OS
5礎(chǔ)
5礎(chǔ)
5礎(chǔ)
50礎(chǔ)
50礎(chǔ)
50礎(chǔ)
V
DRNCL
V
DRNL
V
IN
  V
GATEH
200礎(chǔ) + 8 " I
DRN
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