LM317HV - 3 端子可调节稳压器

LM317HV是TI德州仪器公司的一款单通道LDO产品，LM317HV是3 端子可调节稳压器，本站介绍了LM317HV的封装应用图解、特点和优点、功能等，并给出了与LM317HV相关的TI元器件型号供参考。

LM317HV - 3 端子可调节稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

Up to 60 V Input to Output Differential
1.5-A Output Current
Line Regulation 0.01%/V (Typical)
Load Regulation 0.1% (Typical)
80-dB Ripple Rejection (Typical)
Internal Short-Circuit Current Limiting Protection
Thermal Overload Protection
–55 to 150°C Operating Temperature Range (LM117HV)
0 to 125°C Operating Temperature Range (LM317HV)

产品应用

Industrial Power Supplies
PLC Systems
Factory Automation Systems
Building Automation Systems
Battery Charger

1.2-V to 50-V Adjustable Regulator With High Voltage Input

*Needed if device is more than 6 inches from filter capacitors. .
†Optional—improves transient response
††

产品说明

The LMx17HV is an adjustable 3-terminal positive voltage regulator capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. It requires only two external resistors to set the output voltage. The LMx17HV is packaged in standard transistor packages that are easily mounted and handled.

The LMx17HV offers overload protection like current limit, thermal overload protection and safe area protection, which make the device blowout proof. The overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to output differential is not exceeded, or in other words, do not short the output to ground.

By connecting a fixed resistor between the adjustment and output, the LMx17HV can also be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM117HV LM317HV	TO-39 (3)	8.255 mm × 8.255 mm
LM117HV LM317HV	TO-3 (2)	19.507 mm × 19.507 mm
LM317HV	TO-220 (3)	14.986 mm × 10.16 mm

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