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| 型号： | SG6105ADZ |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 11/17页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY SUPERVISOR 20DIP |
| 标准包装： | 22 |
| 应用： | 电源，监控器 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 5mA |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-DIP |
| 包装： | 管件 |
Functional Description
Protection against over-voltage, short-circuit, and fault
conditions is mandatory in PC power supplies. These
protection circuits can be realized by using many
discrete components and comparators, which occupy a
lot of PCB space and add to assembling costs. This
single chip controller IC provides complete protection
Feature Descriptions
1. Over-voltage protection can be implemented
without any additional components. Over-
voltage sense levels for 3.3V, 5V, 12V, are
4.1V, 6.1V, 14.5V, respectively.
circuits, shunt regulators, and PWM control function
with fewer components. SG6105A is an ideal controller
IC for PC switching mode power supplies.
The features and benefits of this device are:
2.
Over-current and/or short-circuit protection can
also be achieved using over-power protection,
in which the OPP pin is connected to the
current transformer (driver transformer).
1.
2.
3.
4.
5.
6.
7.
8.
9.
Over-voltage and under-voltage protection for
3.3V, 5V, and 12V without external divider.
Over-power protection.
UV protection for -12V and/or -5V.
Power-down warning for power-good signal.
Power-good signal and power-fail lockup.
Remote on/off control.
Delay time for PSON and PS-off signal.
Two shunt regulators for 3.3V and 5V-standby
regulation.
Complete pulse width modulation (PWM) control
circuitry.
3.
4.
5.
6.
7.
The power-good signal is asserted to indicate
the 3.3V, 5V, and 12V is above the under-
voltage threshold level. PG pin goes high when
the above condition is reached. A 2K pull-up
resistor may connect to 5V.
The V CC can be supplied from the 5V-standby.
When the V CC voltage is higher than 7V,
besides the shunt regulator, the circuit is
shutdown and reset. No extra power supply is
needed.
Two internal high-precision 431 shunt
regulators are built-in to provide stable
reference voltages.
Complete PWM control circuitry, including the
error amplifier for push-pull or half-bridge
10.
11.
12.
13.
14.
15.
16.
On-chip oscillator.
Programmable soft-start.
Maximum 93% duty cycle.
Few external components.
More reliable system.
Little space on PCB.
Easy trouble-shooting and implementation.
operation.
Supervisory Circuit Operation
The PC generates the remote ON/OFF logic (PSON),
which is LOW for power supply on and HIGH to switch
off the power supply. The remote ON/OFF is connected
to PSON input.
? 2008 Fairchild Semiconductor Corporation
SG6105A ? Rev. 1.0.2
11
www.fairchildsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SG6105ADZ_F116 | 功能描述:监控电路 Power Supply Sprvsr Regulator + PWM RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| SG6105D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor + Regulator + PWM |
| SG6105D1 | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| SG6105DZ | 制造商:FAIRCHILD 功能描述:Power Supply Supervisor + Regulator + PWM(20-DIP) D version |
| SG6105Z | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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