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| 型号： | CS8126-1YT5 |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .5A TO220-5 |
| 产品变化通告： | Product Discontinuation 03/Apr/2007 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 6 V ~ 26 V |
| 电压 - 压降（标准）： | 0.35V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 750mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 |
| 供应商设备封装： | TO-220-5 |
| 包装： | 管件 |
| 其它名称： | CS8126-1YT5OS |
CS8126
CIRCUIT DESCRIPTION
CDelay VDelayThreshold
ICharge
The CS8126 RESET function, has hysteresis on both the
Reset and Delay comparators, a latching Delay capacitor
discharge circuit, and operates down to 1.0 V.
The RESET circuit output is an open collector type with
ON and OFF parameters as specified. The RESET output
NPN transistor is controlled by the two circuits described
(see Block Diagram).
Low Voltage Inhibit Circuit
This circuit monitors output voltage, and w hen th e output
voltage falls below V RT(OFF) , causes the RESET output
transistor to be in the ON (saturation) state. When the output
voltage rises above V RT(ON) , this circuit permits the RESET
output transistor to go into the OFF state if allowed by the
RESET Delay circuit.
RESET Delay Circuit
This circuit provides a programmable (by external
capacitor) delay on the RESET output lead. The Delay lead
provides source current to the external delay capacitor only
when the “Low Voltage Inhibit” circuit indicates that output
voltage is above V RT(ON) . Otherwise, the Delay lead sinks
current to ground (used to discharge the delay capacitor).
The discharge current is latched ON when the output voltage
falls below V RT(OFF) . The Delay capacitor is fully
discharged anytime the output voltage falls out of
regulation, even for a short period of time. This feature
ensures a controlled RESET pulse is generated following
detection of an error condition. The circuit allows the
RESET output transistor to go to the OFF (open) state only
when the voltage on the Delay lead is higher than V DC(H1) .
The Delay time for the RESET function is calculated from
the formula:
Delay time +
Delay time + CDelay 3.2 105
If C Delay = 0.1 m F, Delay time (ms) = 32 ms ± 50%: i.e.
16 ms to 48 ms. The tolerance of the capacitor must be taken
into account to calculate the total variation in the delay time.
C 1 *
100 nF
Delay
0.1 m F
V IN
Delay
CS8126
GND
V OUT
RESET
R RST
4.7 k W
C 2 **
10 m F to 100 m F
* C 1 is required if the regulator is far from the power source filter.
** C 2 is required for stability.
Figure 13. Application Diagram
APPLICATION NOTES
Stability Considerations
The output or compensation capacitor helps determine
three main characteristics of a linear regulator: start ? up
delay, load transient response and loop stability.
The capacitor value and type should be based on cost,
availability, size and temperature constraints. A tantalum or
aluminum electrolytic capacitor is best, since a film or
ceramic capacitor with almost zero ESR, can cause
instability. The aluminum electrolytic capacitor is the least
expensive solution, but, if the circuit operates at low
temperatures ( ? 25 ° C to ? 40 ° C), both the value and ESR of
the capacitor will vary considerably. The capacitor
manufacturers data sheet usually provides this information.
The value for the output capacitor C 2 shown in the test and
applications circuit should work for most applications,
however it is not necessarily the optimized solution.
To determine an acceptable value for C 2 for a particular
application, start with a tantalum capacitor of the
recommended value and work towards a less expensive
alternative part.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS8126-1YT5G | 功能描述:低压差稳压器 - LDO ANA 5V 750MA LIN 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 |
| CS8126-1YTHA5 | 功能描述:低压差稳压器 - LDO 5V 750mA 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 |
| CS8126-1YTHA5G | 功能描述:低压差稳压器 - LDO ANA 5V 750MA LIN 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 |
| CS8126-1YTHE5 | 功能描述:低压差稳压器 - LDO 5V 750mA 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 |
| CS8126-1YTHE5G | 功能描述:低压差稳压器 - LDO 5V 750mA w/Delayed Reset 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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