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MIC2085-LBQS Datasheet

  • MIC2085-LBQS

  • Single Channel Hot Swap Controllers

  • 406.52KB

  • 28页

  • MICREL   MICREL

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MIC2085/2086
Micrel
Ordering Information
Part Number
MIC2085-xBQS
Fast Circuit Breaker Threshold
x = J, 95mV
x = K, 150mV*
x = L, 200mV*
x = M, Off
x = J, 95mV
x = K, 150mV*
x = L, 200mV*
x = M, Off
Discharge Output
NA
Package
16-pin QSOP
MIC2086-xBQS
Yes
20-pin QSOP
*Contact factory for availability.
Pin Configuration
CRWBR 1
CFILTER 2
20 VCC
19 VCC
18 SENSE
17 GATE
16 REF
15 DIS
14 COMP鈥?/div>
13 COMP+
12 COMPOUT
11 OV
CRWBR 1
CFILTER 2
CPOR 3
ON 4
/POR 5
/FAULT 6
FB 7
GND 8
16 VCC
15 SENSE
14 GATE
13 REF
12 COMP鈥?/div>
11 COMP+
10 COMPOUT
9 OV
CPOR 3
ON 4
/POR 5
PWRGD 6
/FAULT 7
FB 8
GND 9
GND 10
MIC2085
16-Pin QSOP (QS)
MIC2086
20-Pin QSOP (QS)
Pin Description
Pin Number
MIC2086
1
Pin Number
MIC2085
1
Pin Name
CRWBR
Pin Function
Overvoltage Timer and Crowbar Circuit Trigger: A capacitor connected to
this pin sets the timer duration for which an overvoltage condition will trigger
an external crowbar circuit. This timer begins when the OV input rises above
its threshold as an internal 45碌A current source charges the capacitor. Once
the voltage reaches 470mV, the current increases to 1.5mA.
Current Limit Response Timer: A capacitor connected to this pin defines the
period of time (t
OCSLOW
) in which an overcurrent event must last to signal a
fault condition and trip the circuit breaker. If no capacitor is connected, then
t
OCSLOW
defaults to 5碌s.
Power-On Reset Timer: A capacitor connected between this pin and ground
sets the start-up delay (t
START
) and the power-on reset interval (t
POR
). When
VCC rises above the UVLO threshold, the capacitor connected to CPOR
begins to charge. When the voltage at CPOR crosses 1.24V, the start-up
threshold (V
START
), a start cycle is initiated if ON is asserted while capacitor
C
POR
is immediately discharged to ground. When the voltage at FB rises
above V
FB
, capacitor C
POR
begins to charge again. When the voltage at
CPOR rises above the power-on reset delay threshold (V
TH
), the timer
resets by pulling CPOR to ground, and /POR is deasserted.
If C
POR
= 0, then t
START
defaults to 20碌s.
2
2
CFILTER
3
3
CPOR
M0235-121903
2
January 2004

MIC2085-LBQS 产品属性

  • 196

  • 集成电路 (IC)

  • PMIC - 热交换

  • -

  • 热交换控制器

  • 通用型 Infiniband?

  • 无

  • -

  • 2.3 V ~ 16.5 V

  • -40°C ~ 85°C

  • 表面贴装

  • 16-SSOP（0.154"，3.90mm 宽）

  • 16-QSOP

  • 管件

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