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參數(shù)資料
| 型號： | MAX5926EEE+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 12/21頁 |
| 文件大?。?/td> | 333K |
| 描述： | IC HOT-SWAP CONTROLLER 16QSOP-EP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 類型： | 熱交換控制器 |
| 應(yīng)用： | 通用 |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | 1 V ~ 13.2 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-LSSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-QSOP 裸露焊盤 |
| 包裝： | 管件 |
1V to 13.2V, n-Channel Hot-Swap Controllers
Require No Sense Resistor
12 ______________________________________________________________________________________
Load Probing
The MAX5924/MAX5925/MAX5926 load-probing circuit-
ry detects short-circuit conditions during startup. Load
probing is active only when no external R
SENSE
is
detected. As the device begins load probing, SC_DET
is connected to V
CC
through an internal switch with an
on-resistance of R
LP
(Figure 6). V
CC
then charges the
load with a probe current limited at H200mA.
I
PROBE
= (V
CC
- V
OUT
)/(R
LP
+ R
SC
) (Figure 1)
If the load voltage does not reach V
LP,TH
(0.2V typ)
within t
LP
, a short-circuit fault is detected and the start-
up mode is terminated according to the selected fault-
management mode (see the Fault Management section
and Figure 5). If no fault condition is present,
PGOOD/PGOOD asserts at the end of the startup peri-
od (see the Turn-On Waveforms in the Typical
Operating Characteristics).
Load probing can only be, and must be, employed
when not using an external R
SENSE
.
Normal Operation
In normal operation, after startup is complete, protec-
tion is provided by turning off the external MOSFET
when a fault condition is encountered. Dual-speed/
bilevel fault protection incorporates two comparators
with different thresholds and response times to monitor
the current:
1) Slow comparator. This comparator has a 1.6ms
(typ) response time. The slow comparator ignores
low-amplitude momentary current glitches. After an
extended overcurrent condition, a fault is acknowl-
edged and the MOSFET gate is discharged.
2) Fast comparator. This comparator has a quick
response time and a higher threshold voltage. The
fast comparator turns off the MOSFET immediately
when it detects a large high-current event such as a
short circuit.
In each case, when a fault is encountered, the power-
good output deasserts and the device drives GATE low.
After a fault, the MAX5924A, MAX5924B, MAX5925A,
and MAX5925B latch GATE low and the MAX5924C,
MAX5924D, MAX5925C, and MAX5925D enter the
autoretry mode. The MAX5926 has selectable latched or
autoretry modes. Figure 7 shows the slow comparator
response to an overcurrent fault.
V
CC
(V)
12
10
8
6
4
6
8
10
12
14
4
2
14
V
CC
= V
S
Figure 6. Load-Probe Resistance vs. Supply Voltage
V
GATE
PGOOD*
V
OUT
I
LOAD
I
LIM
3.0V TO 6.7V
PGOOD**
*MAX5924B, MAX5924D, MAX5925B, MAX5925D, AND MAX5926 ONLY.
**MAX5924A, MAX5924C, MAX5925A, MAX5925C, AND MAX5926 ONLY.
t
CBS
V
THPGOOD
Figure 7. Slow Comparator Response to an Overcurrent Fault
t
PROBE
< t
LP
I
INRUSH
C
L
= LARGE
C
L
= SMALL
V
OUT
V
OUT
I
LOAD
I
LOAD
I
PROBE
V
LP,TH
(0.2V typ)
SR = dV
dt
C
L
= SMALL
SR = dV
dt
Figure 5. Startup Waveform
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5929BEEG+ | IC HOT SWAP CTLR QUAD 24QSOP |
| MAX5930AEEG+ | IC HOT SWAP CTLR PWR SEQ 24QSOP |
| MAX5932ESA+T | IC HOT-SWAP CONTROLLER 8-SOIC |
| MAX5933EESA+ | IC HOT-SWAP CONTROLLER 8-SOIC |
| MAX5934EEE+ | IC HOT-SWAP CONTROLLER 16-QSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5926EEE+ | 功能描述:熱插拔功率分布 1-13.2V Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5926EEE+T | 功能描述:熱插拔功率分布 1-13.2V Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5926EEE-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5926EVKIT | 制造商:Maxim Integrated Products 功能描述:1V TO 13.2V N-CHANNEL HOT-SWAP CON - Rail/Tube |
| MAX5927AETJ+ | 功能描述:熱插拔功率分布 Quad Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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