器件名称: LM317AHV
功能描述: 3-Terminal Positive Adjustable Regulator
文件大小: 47.6KB 共6页
简 介:www.fairchildsemi.com
LM317AHV
3-Terminal Positive Adjustable Regulator
Features
Output Current in Excess of 1.5A Output Adjustable Between 1. 2V and 57V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe Area Compensation TO-220 Package
Description
This monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5A of load current with an output voltage adjustable over a 1.2 to 57V. It employs internal current limiting, thermal shut down and safe area compensation.
TO-220
Output
1 23
1. Adj 2. Output 3. Input
Internal Block Diagram
Vin 3 Input
+ -
Voltage Reference
Protection Circuitry
Rlimit
2 Vo
Output
1 Vadj
Rev. 1.0.1
2002 Fairchild Semiconductor Corporation
LM317AHV
Absolute Maximum Ratings
Parameter Input-Output Voltage Differential Lead Temperature Power Dissipation Operating Junction Temperature Range Storage Temperature Range Temperature Coefficient of Output Voltage Symbol V I - VO TLEAD PD Tj TSTG Vo/T Value 60 230 Internally limited 0 ~ +125 -65 ~ +125 ±0.02 Unit V °C W °C °C %/°C
Electrical Characteristics
(VI-VO=5V, IO= 0.5A, 0°C ≤ TJ ≤ + 125°C, IMAX = 1.5A, PDMAX = 20W, unless otherwise specified) Parameter Line Regulation (Note1) Symbol Rline Conditions TA = +25°C 3V ≤ VI - VO ≤ 60V 3V ≤ VI - VO ≤ 60V TA = +25°C, 10mA ≤IO ≤IMAX VO< 5V VO ≥ 5V 10mA ≤ IO ≤ IMAX VO < 5V VO ≥ 5V 3V ≤ VI - VO ≤60V 10mA ≤ IO ≤ IMAX PD ≤ PMAX 3V ≤ VIN - VO……
