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鍨嬭櫉(h脿o)锛� LTC4213CDDB#TRPBF
寤犲晢锛� Linear Technology
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LTC4213
12
4213f
APPLICATIO S I FOR ATIO
WU
U
Figure 2. Short Circuit Fault Timing Diagram
AB
CB TRIPS
VSENSE
VGATE
VCB
>VCB
VREADY
CIRCUIT BREAKER TRIPS
GATE AND READY PINS PULL LOW
SHORT CIRCUIT
tFAULT
4213 F02
The maximum load limit current is given by:
I
V
R
LIMIT MAX
CB MAX
DSON MIN
()
=
5
Most MOSFET data sheets have an RDSON specification
with typical and maximum values but no minimum value.
Assuming a normal distribution with typical as mean, the
minimum value can be estimated as
RR
R
DSON MIN
DSON NOM
DSON MAX
()
(
)
(
)
()
=
26
The LTC4213 gives higher gate drive than the manufac-
turer specified gate drive for RDSON. This gives a slightly
lower RDSON than specified. Operating temperature also
modulates the RDSON value.
Example Current Limit Calculation
An Si4410DY is used for current detection in a 5V supply
system with the LTC4213 VCB at 25mV (ISEL pin grounded).
The RDSON distribution for the Si4410DY is
Typical RDSON = 0.015 = 100%
Maximum RDSON = 0.02 = 133.3%
Estimated MIN RDSON = 2 15 鈥� 20 = 0.010 = 66.7%
The RDSON variation due to gate drive is
RDSON @ 4.5VGS = 0.015 = 100% (spec. TYP)
RDSON @ 4.8VGS = 0.014 = 93% (MIN VGSMAX)
RDSON @ 7VGS = 0.0123 = 82% (NOM VGSMAX)
RDSON @ 8VGS = 0.012 = 80% (MAX VGSMAX)
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
DS2401Z+T&R IC SILICON SERIAL NUMBER SOT223
DS2401P+T&R IC SILICON SERIAL NUMBER 6-TSOC
GMC60DRYI-S13 CONN EDGECARD 120POS .100 EXTEND
ABC43DRYN-S13 CONN EDGECARD 86POS .100 EXTEND
ABC43DRYH-S13 CONN EDGECARD 86POS .100 EXTEND
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鍙冩暩(sh霉)鎻忚堪
LTC4213IDDB 鍒堕€犲晢:Linear Technology 鍔熻兘鎻忚堪:Hot Swap Controller 1-CH 6V 8-Pin DFN EP
LTC4213IDDB#PBF 鍒堕€犲晢:Linear Technology 鍔熻兘鎻忚堪:Hot Swap Controller 1-CH 6V 8-Pin DFN EP 鍒堕€犲晢:Linear Technology 鍔熻兘鎻忚堪:HOT SWAP CONTROLLER, 2.3V-6V, DFN-8; Controller Applications:Hot Board Insertion, Electronic Circuit Breaker; Internal Switch:Yes; Supply Voltage Min:2.3V; Supply Voltage Max:6V; Digital IC Case Style:DFN; No. of Pins:8 ;RoHS Compliant: Yes
LTC4213IDDB#TRMPBF 鍔熻兘鎻忚堪:IC CIRC BREAK ELEC 8-DFN RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 灏堢敤 IC 绯诲垪:* 妯�(bi膩o)婧�(zh菙n)鍖呰:1,000 绯诲垪:- 椤炲瀷:闊抽牷瑕栭牷鍒囨彌 鎳�(y墨ng)鐢�:TV 闁�(k膩i)闂�(gu膩n) 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:36-USO 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:- 鍖呰:甯跺嵎 (TR) 鍏跺畠鍚嶇ū:AN15851ATR
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LTC4214 鍒堕€犲晢:LINER 鍒堕€犲晢鍏ㄧū:Linear Technology 鍔熻兘鎻忚堪:Dual Hot Swap Controller
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