參數(shù)資料
型號(hào): MAX5934EEE+
廠商: Maxim Integrated
文件頁(yè)數(shù): 12/15頁(yè)
文件大小: 268K
描述: IC HOT-SWAP CONTROLLER 16-QSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 100
類(lèi)型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 33 V ~ 80 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-QSOP
包裝: 管件
Positive High-Voltage, Hot-Swap Controllers with
Selectable Fault Management and Status Polarity
12   ______________________________________________________________________________________
Undervoltage and Overvoltage Detection
An undervoltage fault is detected when V
ON
goes
below the trip point (V
ONL
= 1.233V). When this occurs,
GATE pulls low and stays low until V
ON
rises above
(V
ONH
= 1.313V).
An example of overvoltage protection is shown in
Figure 8. Zener diode D1 turns on when V
IN
exceeds
the diodes breakdown voltage and begins to pull
TIMER high. When V
TIMER
goes higher than 1.233V, a
fault is detected and GATE pulls low. As a result, Q1
turns off. Figure 9 shows overvoltage waveforms for V
IN
(see the Fault Management (LATCH/RETRY) section for
restart conditions).
Supply Transient Protection
The MAX5934/MAX5934A are guaranteed to be safe
from damage with supply voltages of up to 85V. Spikes
at voltages above 85V may damage the part.
Instantaneous short-circuit conditions, can cause large
RESPONSE TIME TO OVERCURRENT
V
CC
 - V
SENSE
 (mV)
200
100
2
4
6
8
10
12
14
0
0
300
50
150
250
Figure 7. Response Time to Overcurrent
MAX5934
MAX5934A
ON
C
L
OUT
GATE
SENSE
V
CC
16
14
11
9
4
6
5
7
12
8
M1
R1
1k&
5%
R
SENSE
0.025&
C1
10nF
R4
59k&
1%
R6
24k&
5%
R7
24k&
5%
R8
24k&
5%
R10
1k&
1%
R9
90k&
1%
V
IN
R
G
10&
5%
C
TIMER
0.68礔
R5
3.57k&
1%
FB1
2
10
1
3
15
PWRGD1
PWRGD2
TIMER
LATCH/RETRY
V
CC
FB2
PWRGD3
V
MONITOR
PWRGD
DC
GND
V
CC
POL_SEL
V
CC
IRF530
D1
30V
1N5256B
R2
49.9k&
1%
R3
3.4k&
1%
Figure 8. Overvoltage Detection
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