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参数资料
| 型号： | CS8101YDR8G |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Micropower 5.0 V, 100 mA Low Dropout Linear Regulator with RESET and ENABLE |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PDSO8 |
| 封装： | LEAD FREE, SOIC-8 |
| 文件页数： | 6/13页 |
| 文件大小： | 136K |
| 代理商： | CS8101YDR8G |
CS8101
http://onsemi.com
6
The RESET output is an open collector NPN transistor,
controlled by a low voltage detection circuit. The circuit is
functionally independent of the rest of the IC thereby
guaranteeing that the RESET signal is valid for V
OUT
as low
as 1.0 V.
Figure 5. RC Network for RESET Delay
V
OUT
CS8101
5.0 V to P
and System
Power
RESET
R
RST
to P
RESET
Port
C
RST
C
OUT
An external RC network on the lead (Figure 5) provides
a sufficiently long delay for most microprocessor based
applications. RC values can be chosen using the following
formula:
RTOTCRST
tDelay
VT
VRST
ln
VOUT
VOUT
where:
R
RST
= RESET Delay resistor
R
IN
= P port impedance
R
TOT
= R
RST
in parallel with R
IN
C
RST
= RESET Delay capacitor
t
Delay
= desired delay time
V
RST
= V
SAT
of RESET lead (0.7 V @ turn ON)
V
T
= RESET threshold.
The circuit depicted in Figure 6 lets the microprocessor
control its power source, the CS8101 regulator. An I/O port
on the P and the SWITCH port are used to drive the base
of Q1. When Q1 is driven into saturation, the voltage on the
ENABLE lead falls below its lower threshold. The
regulator’s output is enabled. When the drive current is
removed, the voltage on the ENABLE lead rises, the output
is switched off and the IC moves into Sleep mode where it
draws 50 A (max).
By coupling these two controls with the ENABLE lead,
the system has added flexibility. Once the system is running,
the state of the SWITCH is irrelevant as long as the I/O port
continues to drive Q1. The microprocessor can turn off its
own power by withdrawing drive current, once the
SWITCH is open. This software control at the I/O port
allows the microprocessor to finish key housekeeping
functions before power is removed.
The logic options are summarized in Table 1.
Table 1. Logic Control of CS8101 Output
Microprocessor
I/O Drive
Switch
ENABLE
Output
ON
Closed
LOW
ON
Open
LOW
ON
OFF
Closed
LOW
ON
Open
HIGH
OFF
The I/O port of the microprocessor typically provides
50 A to Q1. In automotive applications the SWITCH is
connected to the ignition switch.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS8101YDWF20 | 功能描述:低压差稳压器 - LDO 5V 100mA MicroPower 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 |
| CS8101YDWF20G | 功能描述:低压差稳压器 - LDO 5V 100mA MicroPower 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 |
| CS8101YDWFR2 | 制造商:ON Semiconductor 功能描述: |
| CS8101YDWFR20 | 功能描述:低压差稳压器 - LDO 5V 100mA MicroPower 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 |
| CS8101YDWFR20G | 功能描述:低压差稳压器 - LDO 5V 100mA MicroPower 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 |
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