- 您现在的位置：买卖IC网 > PDF目录11158 > MAX4789ETT+T (Maxim Integrated Products)IC SWITCH 1X1 6TDFN PDF资料下载
参数资料
| 型号： | MAX4789ETT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/11页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 1X1 6TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 开关 |
| 电路： | 1 x 1:1 |
| 导通状态电阻： | 400 毫欧 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.3 V ~ 5.5 V |
| 电流 - 电源： | 120µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WDFN 裸露焊盘 |
| 供应商设备封装： | 6-TDFN 裸露焊盘（3x3） |
| 包装： | 带卷 (TR) |
MAX4789–MAX4794
Detailed Description
The MAX4789–MAX4794 are forward/reverse current-
limited switches that operate from a 2.3V to 5.5V input
voltage range and guarantee a 200mA, 250mA, and
300mA minimum current-limit threshold for different
options. The voltage drop across an internal sense
resistor is compared to two reference voltages to indi-
cate a forward or reverse current-limit fault. When the
load current exceeds the preset current limit for greater
than the fault-blanking time, the switch opens.
The MAX4790, MAX4792, and MAX4794 have an
autoretry function that turns on the switch again after an
internal retry time expires. If the faulty load condition is
still present after the blanking time, the switch turns off
again and the cycle is repeated. If the faulty load condi-
tion is not present, the switch remains on.
The MAX4789, MAX4791, and MAX4793 do not have
the autoretry option and the switch remains in latch-off
mode until the ON pin or the input power is cycled from
high to low and then high again.
The undervoltage lockout (UVLO) circuit prevents erro-
neous switch operation when the input voltage goes too
low during startup conditions.
Reverse Current Protection
The MAX4789–MAX4794 limit the reverse current (VOUT
to VIN) from exceeding the maximum IREV value. The
switch is shut off and
FLAG is asserted (MAX4789/
MAX4791/MAX4793) if the reverse current-limit condition
persists for more than the blanking time. This feature pre-
vents excessive reverse currents from flowing through the
device.
Switch-On/Off Control
Toggle ON high to enable the current-limited switches.
The switches are continuously on, only if VIN exceeds the
UVLO threshold (typically 2V) and there is no fault. When
a forward/reverse current fault is present or the die
exceeds the thermal-shutdown temperature of +150°C,
OUT is internally disconnected from IN and the supply
current decreases to 8A (latch off). The switch is now
operating in one of its off states. The switch-off state also
occurs when driving ON low, thus reducing the supply
current (shutdown) to 0.01A. Table 1 illustrates the
ON/OFF state of the MAX4789–MAX4794 current-limit
switches.
FLAG Indicator
The MAX4789, MAX4791, and MAX4793 feature a
latched fault output,
FLAG. Whenever a fault is activat-
ed, it latches
FLAG output low and also turns the switch
200mA/250mA/300mA Current-Limit Switches
6
_______________________________________________________________________________________
N
BLANKING TIME
CIRCUITRY
REVERSE CURRENT
DETECTOR
FORWARD CURRENT
DETECTOR
N
+2.0V
FLAG
OUT
IN
ON
GND
MAX4789/MAX4791/
MAX4793 ONLY
LOGIC
AUTO-
RETRY
MAX4789–MAX4794
UNDERVOLTAGE
LOCKOUT
Figure 1. Functional Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| VI-21T-IY-F4 | CONVERTER MOD DC/DC 6.5V 50W |
| VE-BND-IW-F4 | CONVERTER MOD DC/DC 85V 100W |
| MAX4829ELT+T | IC SWITCH 1X1 6UTDFN |
| MAX4521EUE+T | IC SWITCH QUAD SPST 16TSSOP |
| VI-21T-IY-F3 | CONVERTER MOD DC/DC 6.5V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4789EUK | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX4789EUK+T | 功能描述:电源开关 IC - 配电 200/250/300mA Crnt Limit Switch RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX4789EUK-T | 功能描述:电源开关 IC - 配电 RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX4789EUS | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX4789EUS-T | 功能描述:电源开关 IC - 配电 RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
发布紧急采购，3分钟左右您将得到回复。