IL317

IL317 INTEGRAL | Alldatasheet

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Technical content

OUTPUT POSITIVE VOLTAGE REGULATORS The IL317 is adjustable 3-terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. These voltage regulator is exceptionally easy to use and require only two external resistors to set the output voltage. Further, it employ internal current limiting, thermal shutdown and safe area compensation, making them essentially blow-out proof. The IL317 serve a wide variety of applications to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the IL317 series can be used as a precision current requlator.

• Output Current in Excess of 1.5 Ampere
• Output Adjustable between 1.2 V and 37 V
• Internal Thermal Overload Protection
• Internal Short - Circuit Current Limiting Constant with Temperature
• Output Transistor Safe-Area Compensation
• Floating Operation for High Voltage Applications
• Standard 3-lead Transistor Packages
• Eliminates Stocking Many Fixed Maximum ratings Rating Symbol Value Unit Input - Output Voltage Differential Vi - Vo Vdc Power Dissipation and Thermal Characteristics PD Internally Limited Operating Junction Temperature Rang TJ -0 to +150 Storage Junction Temperature Rang Tstg -65 to +150 Pin 1. Ajust 2. Vout 3. Vin (Heatsink surface connected to Pin 2.) TO-220 AB Ño** 1µF Adjust Ñin* 0.1µF Vout Vin IL317 ∗ = Cin is required if regulator is located an ap- preciable distance from power supply filter. ∗∗ = Co is not needed for stability ; however, is does improve transient response. Vout V R R R ADJ I 125 Since I ADJ is controlled to less then 100 µA, the error associated with this term is negligible in most applications. Standard application

Electrical characteristics

(Vi-Vo= 5.0V, Io = 0.5 A, TJ = Tlow to Thigh (see Note 1); Imax = 1.5 A and Pmax = 20 W unless otherwise noted) Characteristic Symbol Min Typ Max Unit Line Regulation (TA=+25°C) 3.0V ≤ Vi - Vo ≤40 V Regline 0.01 0.04 %/V Load Regulation(TJ=+25°C) 10mA≤Io≤Imax, Vin ≤5V Vin≥5 V Regload 5.0 0.1 0.5 mV %/Vo Thermal Regulation (TA=+25°C) 20 ms Pulse 0.03 0.07 %/W Adjustment Pin Current IAdj 100 µA Adjustment Pin Current Change 2.5 ≤ Vi - Vo ≤ 40 V 10mA ≤IL≤ Imax, PD ≤ Pmax ∆IAdj 0.2 5.0 µA Reference Voltage (Note 4) 3.0 ≤ Vi - Vo ≤ 40 V 10mA ≤IL≤ Imax, PD ≤ Pmax Vref 1.2 1.25 1.3 V Line Regulation (Note 3)

3.0 V ≤ Vi - Vo ≤40 V

0.02 0.07 %/V Load Regulation (Note 3) 10mA≤Io≤Imax, Vin ≤5V Vin≥5 V Regload 0.3 1.5 %/V %/V Temperature Stability (Tlow ≤ Tj ≤ Ttigh) Ts 0.7 Minimum Load Current to Maintain Regulation (Vi - Vo = 40 V) ILmin 3.5 mA Maximum Output Current Vi - Vo≤ 15 V , P ≤ 20 W Vi - Vo = 40 V, P ≤20W, TA=+25°C Imax 1.5 0.15 2.2 0.4 A RMS Nose , % of Vo TA=+25°C, 10 Hz ≤ f ≤ 10 kHz N 0.003 %/Vo Ripple Rejection, Vo = 10 V, f = 120 Hz (Note 5) Without Cadj Cadj = 10 µF RR dB Long-Term Stability, Tj = Thigh (Note 6) TA=+25°C for Endpoint Measurements S 0.3 1.0 %/1.0 k Hrs. Thermal Resistance Junction to Case RθJC 5.0 °C/W Notes: (1) Tlow = 0 °C , Thigh = +125 °C (2) Imax = 0.5 A , Pmax (3) Load and line regulation are specified at constant junction tempereture. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. (4) Selected devices with tightened tolerance reference voltage available. (5) Cadj , when used, connected between the adjustment pin and ground. (6) Since Long - Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot.