欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: MAX5923EUP+T
廠商: Maxim Integrated
文件頁數: 8/12頁
文件大小: 444K
描述: IC HOT-SWAP SWITCH +60V 20-TSSOP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
系列: Simple Swapper™
類型: 熱交換開關
應用: 通用
內部開關:
電流限制: 800mA
電源電壓: 16 V ~ 60 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 20-TSSOP
包裝: 帶卷 (TR)
Detailed Description
The MAX5923 is a fully integrated hot-swap switch that
contains a 0.45& integrated power MOSFET and oper-
ates from a +16V to +60V supply rail. The device allows
the safe insertion and removal of circuit cards into live
backplanes without causing problematic glitches on the
supply rail. The device also monitors various circuit para-
meters and disconnects the load if a fault condition
occurs, alerting the host with a logic-level FAULT output.
The MAX5923 provides an Enable input to enable/disable
the device with a logic signal and logic output POK that
indicates when the output voltage has reached within
750mV of the input voltage. Three fault conditions are
monitored: a zero-current condition, an overcurrent con-
dition, and a thermal overload condition. A FAULT output
indicates to the host if an overcurrent or thermal fault
occurs and a ZC output indicates if the output has a zero-
current condition. An undervoltage lockout circuitry shuts
down the device if the input voltage falls below the UVLO
threshold.
Power-Up Mode
During power-up, the MAX5923 gradually turns on the
integrated N-channel MOSFET. To minimize EMI, the
MAX5923 limits the output voltage slew rate at the OUT
pin to dV
OUT
/dt = 100V/ms (max) and the output current
slew rate out of the OUT pin to dI
OUT
/dt = 35A/ms (max).
The MAX5923 has an integrated 0.45& N-channel power
MOSFET. The MOSFETs drain is connected to the
DRAIN pin and its source is connected to the OUT pin.
The MAX5923 monitors and provides current-limit protec-
tion to the load at all times. The current limit is program-
mable using an external current-sensing resistor
connected from IN to DRAIN. The MAX5923 features cur-
rent-limit foldback and duty-cycle limit to ensure robust
operation during load-fault and short-circuit conditions
(see the Overcurrent Protection section).
When V
OUT
is within 750mV of V
IN
for more than
t
POK_HIGH
, POK goes open-drain. After POK is assert-
ed, the MAX5923 activates the zero-current detection
function. This function monitors the output for an under-
current condition and eventually turns off the power to
the output if the load is disconnected (see the Zero-
Current Detection section).
Undervoltage Lockout (UVLO)
The MAX5923 operates from a +16V to +60V supply
voltage range and has a default UVLO set at +28V. The
UVLO threshold is adjustable using a resistive divider
connected to the UVLO pin (see Figure 1). When the
input voltage is below the UVLO threshold, all operation
stops and the MOSFET is held off. When the input volt-
age is above the UVLO threshold and EN is high, the
MAX5923 goes into operation.
To adjust the UVLO threshold, connect an external
resistive divider from IN to UVLO and then from UVLO
to AGND. Use the following equation to calculate the
new UVLO threshold:
V
REF
is typically 1.33V. The UVLO pin input resistance is
50k& (min), so keep the R1 and R2 parallel combination
value at least 20 times smaller than 50k& to minimize
the new UVLO threshold error.
V
V
R
R
UVLO  TH
REF
_
=
+
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
1
2
+60V Simple Swapper Hot-Swap Switch
8  _______________________________________________________________________________________
PIN
NAME
FUNCTION
13
DGND
Digital Ground. DGND can vary ?V from AGND. DGND and AGND must be connected together at a
single point in the system.
14
LATCH
Fault Management Selection Digital Input. Referenced to DGND. Connect to logic high to latch off
after a fault condition. Connect to logic low for automatic restart after a fault condition (see the Fault
Management section).
15
ZC_EN
Zero-Current Detection Enable Logic Input. Referenced to DGND. Connect ZC_EN to a logic high to
enable the zero-current detection circuitry. Connect ZC_EN to a logic low to disable this function.
16
EN
ON/OFF Control-Logic Input. Referenced to DGND. Connect to logic high to enable the device.
Connect to logic low to disable the device and reset a latched-off condition.
17
VDIG
Digital Supply Voltage. VDIG is the supply voltage for the internal digital logic circuity. EN, LATCH,
and ZC_EN input logic thresholds are automatically scaled to the voltage on VDIG. See the Typical
Application Circuit for proper filtering.
20
OUT
Output Voltage
Pin Description (continued)
相關PDF資料
PDF描述
MAX5926EEE+ IC HOT-SWAP CONTROLLER 16QSOP-EP
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
相關代理商/技術參數
參數描述
MAX5924AEUB 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5924AEUB+ 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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5924AEUB+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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5924AEUB-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5924BEUB 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
主站蜘蛛池模板: 永修县| 巧家县| 彰化县| 雷波县| 通江县| 绥中县| 高阳县| 滨州市| 芦山县| 囊谦县| 集贤县| 珠海市| 宣化县| 布拖县| 普陀区| 巢湖市| 平度市| 米泉市| 六安市| 湘潭市| 南汇区| 灌云县| 都匀市| 滕州市| 马公市| 连城县| 鹤山市| 阿克陶县| 平陆县| 华亭县| 柳州市| 黄陵县| 扶风县| 康保县| 虎林市| 四子王旗| 孟津县| 景德镇市| 丹寨县| 榆林市| 马龙县|