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参数资料
| 型号： | MAX4826ELT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 1X1 6UTDFN |
| 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： | 1 欧姆 |
| 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-WFDFN |
| 供应商设备封装： | 6-uDFN（1.5x1.0） |
| 包装： | 带卷 (TR) |
FFLG Indicator
The MAX4826–MAX4831 feature a current-limit fault
output, FFLG. Whenever a current-limit fault is activat-
ed, FFLG goes low and the switch turns off. FFLG is an
open-drain output transistor and requires an external
pullup resistor from FFLG to IN. During shutdown (ON
is low), the pulldown on the FFLG output is released to
limit power dissipation. FFLG goes low when any of the
following conditions occur:
The die temperature exceeds the thermal shut-
down temperature limit of +150°C.
The device is in current limit for more than the
fault-blanking period.
VIN is below the UVLO threshold.
NOLD Indicator
The MAX4826–MAX4831 feature a no-load flag output,
NOLD (Figure 1). This output is pulled low every time
the current coming out of the switch is less than 10mA
(MAX4826–MAX4829), or 5mA (MAX4830/MAX4831).
NOLD is an open-drain output transistor and requires
an external pullup resistor from NOLD to a supply up to
+5.5V. Current through the switch is intended to be
positive (from IN to OUT), and for currents that are
large in magnitude but negative in sign (OUT to IN),
NOLD asserts low. For options with the autoretry fea-
ture (MAX4827/MAX4829/MAX4831), the NOLD output
is high impedance during the tRETRY period when a for-
ward-current-limit condition is present. However, NOLD
is pulled low if a reverse current-limit condition is pre-
sent during the tRETRY period. A constant time filter is
present at the output of NOLD that gives a 60s delay
when a no-load condition is asserted. Deassertion of
NOLD is not delayed. During shutdown (ON is low), the
pulldown on NOLD is released to limit power dissipation.
Autoretry (MAX4827/MAX4829/MAX4831)
When the forward- or reverse-current-limit threshold is
exceeded, the tBLANK timer begins counting (Figure 2).
The timer resets if the overcurrent condition disappears
MAX4826–MAX4831
50mA/100mA Current-Limit Switches with
NO-LOAD Flag in DFN
_______________________________________________________________________________________
7
LOAD
CURRENT
SWITCH
STATUS
tBLANK
OFF
ON
ON PIN
VOLTAGE
(a)
(b)
UVLO
FFLG
PIN STATUS
LOAD
CURRENT
SWITCH
STATUS
OFF
ON
IN PIN
VOLTAGE
FFLG
PIN STATUS
tBLANK
Figure 3. MAX4826/MAX4828/MAX4830 Latchoff Fault
Blanking
Figure 2. MAX4827/MAX4829/MAX4831 Autoretry Fault
Blanking Diagram
LOAD
CURRENT
SWITCH
STATUS
tBLANK
OFF
ON
tRETRY
CURRENT
LIMIT
SHORT
CONDITION
REMOVED
tBLANK
VIN
VON
LOAD
CURRENT
NOLD
STATUS
NO-LOAD
THRESHOLD
CURRENT
LIMIT
60
μs
60
μs
Figure 1. MAX4826–MAX4831 No-Load Flag Response
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4827ELT | 制造商:Maxim Integrated Products 功能描述:50MA/100MA CURRENT-LIMIT SWITCHES W - Rail/Tube |
| MAX4827ELT+T | 功能描述:电源开关 IC - 配电 50mA/100mA Current 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 |
| MAX4827ELT-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 |
| MAX4828ELT | 制造商:Maxim Integrated Products 功能描述:50MA/100MA CURRENT-LIMIT SWITCHES W - Rail/Tube |
| MAX4828ELT+T | 功能描述:电源开关 IC - 配电 50mA/100mA Current 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 |
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