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参数资料
| 型号： | NCV8509PDW26R2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V/2.6V 16SOIC |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V，2.6V |
| 输入电压： | 最高 50V |
| 电压 - 压降（标准）： | 0.4V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 限制（最小）： | 115mA，105mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 标准包装 |
| 其它名称： | NCV8509PDW26RODKR NCV8509PDW26RODKR-ND NCV8509PDW26ROSDKR |
NCV8509 Series
CIRCUIT DESCRIPTION
V IN
V OUT1
RESET
Reset Delay
Reset Delay
Reset Delay
Power Up
Short on
V OUT1
V IN1 Fast
Turn Off
RESET
Output Peak
Figure 41. Dual Drive RESET Valid
RESET
The RESET function gets its drive from both the input
(V IN1 ) and the output (V OUT1 ). Because of this, it is able to
maintain a more reliable reset valid signal. Most regulators
maintain a valid reset signal down to 1 V on the output
voltage. The reset on the NCV8509 is valid down to 0 V on
the output voltage V OUT1 (power is provided via V IN1 ) and
the reset on the NCV8509 is valid down to 0 V on the input
voltage V IN1 (power is provided via V OUT1 ). Refer to
Figure 41 for operation timing diagrams.
Delay Function
The reset delay circuit provides a programmable (by
external capacitor) delay on the RESET output lead.
The delay lead provides source current (typically 6.0 μ A)
to the external delay capacitor during the following
proceedings:
1. During power up (once the regulation threshold
has been verified);
The delay capacitor is discharged when the regulation
(RESET threshold) has been violated. This is a latched
incident. The capacitor will fully discharge and wait for the
device to regulate before going through the delay time event
again.
Power Shunt
R EX routes some of the current used in the V OUT2 to a
second input pin (V IN2 ). This is accomplished by using an
internal shunt. A simplified version of this shunt is shown in
Figure 42. This has the effect of reducing the amount of
power dissipated on chip. The effects of choosing the
external resistor value are shown in Figure 43.
Selection of the optimum Rex resistor value can be done
using the following equation:
(Vin(max) * 4.5)
Iout2(max)
When not using the power shunt, short V IN1 to V IN2 .
2. After a reset event has occurred and the device is
back in regulation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCV8509PDW26R2G | 功能描述:线性稳压器 - 标准 2.6V 100mA Sequenced Dual RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| NCV8512 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG |
| NCV8512PW50G | 功能描述:低压差稳压器 - LDO 5V MICROPOWER 150mA LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCV8512PW50R2G | 功能描述:低压差稳压器 - LDO 5V MICROPOWER 150mA LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCV8518 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
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