LM317 MIK317 - Datasheet Archive

 

1.5 A Positive Adjustable Voltage Regulator LM317 MIK317 January 1995 - revised September 2002 Description The MIK317 are

 

Replacement of 1.5 A Positive Adjustable Voltage Regulator LM317 LM317 MIK317 MIK317 January 1995 - revised September 2002 Description The MIK317 MIK317 are adjustable 3-terminal positive -voltage regulators capable of supplying 1.5A over a differential voltage range of 3V to 40V. They are exceptionally easy to use and require only two external resistors to set the output voltage. Both input and output regulation are better than standard fixed regulators. In addition to higher performance than fixed regulators, these regulators offer full overload protection available only in integrated circuits. Included on the chip are current limit, thermal overload protection, and safe-area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Normally, no capacitors are needed unless the device is situated far 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 primary applications of each of these regulators is that of a programmable output regulator, but by connecting a fixed resistor between adjustment terminal and the output terminal, each device can be used as a precision current regulator. Even though the regulator is floating and sees only the input-to-output differential voltage, use of these devices to regulate output voltages that would cause the maximum-rated differential voltage to be exceeded if the output became shorted to ground is not recommended. Package Information Features · · · · · · · Output Voltage Range Adjustable from 1.2 V to 37 V Output Current Capability of 1.5 A Max Input Regulation Typically 0.01 % Per Input - Volt Change Output Regulation Typically 0.1 % Peak Output Current Constant Over Temperature Range of Regulator Popular 3-Lead TO-220 Package Ripple Rejection Typically 80 dB The output terminal is in electrical contact with the mounting base Typical application data V I 3 IN MIK317 MIK317 ADJ OUT 1 2 V C1 = 0.1 µF (see Note A) R2 0 (see Note C) R1 240 C2 = 1µF (see Note B) Note A: Use of an input bypass capacitor is recommended if regulator is far from filter capacitors. Note B: Use of an output capacitor improves transient response but is optional. Note C: Output voltage is calculated from the equation: R V0 = Vref 1 + 2 R1 Vref equals the difference between the output and adjustment terminal voltages Absolute Maximum Ratings OVER OPERATING TEMPERATURE RANGE (UNLESS OTHERWISE NOTED) Parameter Maximum Units Input-to-output differential voltage, VI - Vo 40 V Continuous total dissipation at 25 °C free-air temperature 2 W Continuous total dissipation at (or below) 25 °C case temperature Operating free-air, case, or virtual junction temperature range Storage temperature range 15 W 0 to 125 °C -65 to 150 °C 260 °C Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds Recommended Operating Conditions Parameter MIK317 MIK317 Units min max Output current, I0 10 1500 mA Operating virtual junction temperature, TJ 0 125 °C Page 1 of 2 Replacement of LM317 LM317 1.5 A Positive Adjustable Voltage Regulator MIK317 MIK317 January 1995 - revised September 2002 Electrical Characteristics Electrical Characteristics over recommended ranges of operating virtual junction temperature (unless otherwise noted) (Note 1) Parameter Test Conditions* MIK317 MIK317 Min Input regulation (Note 2) Ripple rejection Output regulation Units Max TJ = MIN to MAX 0.01 0.04 l0 = 10 mA to 1.5 A VI-V0=3 V to 40 V, (Note 3) Typ 0.02 0.07 Vo=10 V, f=120 Hz %/ V 65 Vo=10 V, f=120 Hz 10-µF capacitor between ADJ and ground lo = 10 mA to 1.5 A, Vo 5 V TJ= 25 °C, (See Note 3) Vo > 5 V 66 5 Output voltage change with temperature Output voltage long-term drift (Note 4) % 70 mV 0.3 After 1000 h at TJ = MAX and VI-Vo =40 V 0.5 20 TJ = MIN to MAX 25 0.1 Vo 5 V Vo > 5 V lo = 10 mA to 1.5 A, (Note 3) dB 80 mV 1.5 % 1 % 0.3 Output noise voltage f= 10 Hz to 10 kHz, TJ =25°C Minimum output current to maintain regulation VI-Vo = 40 V Peak output current VI-Vo 15 V 1.5 0.15 % 10 mA 2.2 VI-Vo 40 V, TJ =25°C 1 0.003 0.4 3.5 Adjustment-terminal current % A 50 Reference voltage (output to ADJ ) VI-Vo = 3 V to 40 V, lo=10 mA to 1.5 A, P 15W 1.2 µA 5.0 µA 1.25 VI-Vo=2.5 V to 40 V, lo = 10 mA to 1.5 A 100 0.2 Change in adjustment-terminal current 1.3 V * Unless otherwise noted, these specifications apply for the following test conditions: VI - V0 = 5V and I0 = 0.5 A. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. Note 1: All characteristics are measured with a 0.1 - µF capacitor across the input and a 1 - µF capacitor across the output. Note 2: Input regulation is expressed here as the percentage change in output voltage per 1 - V change at the input. Note 3: Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. Note 4: Since long-term drift cannot be measured on the individual devices prior to shipment, this specification is not intended to be a guarantee or warranty. It is an engineering estimate of the average drift to be expected from lot to lot. Pad Location MIK317 MIK317 Pad Location Coordinates N Pad Name Coordinates µm X Y 2120 410 1 ADJ 2 Output 1730 1490 3 Input 1120 950 4 Output 90 100 Chip size: 2.45 mm x 1.85 mm Page 2 of 2