SN317Mx [ 0.5 A Adjustable Output ] Positive Voltage Regulator Semiconductor Description http:// www.auk.co.kr The SN317 is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of 0.5A over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow-out proof. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and TO-252-3L output, the SN317 can be used as a precision current regulator. Application ◈ Consumer and personal electronics ◈ SMPS post-regulator / dc-to-dc modules ◈ High-efficiency linear power supplies ◈ LED Light Constant Current Controllers TO-220F-3L Features and Benefits ◈ Output Current up to 0.5A ◈ Output Adjustable Level : 1.2V to 37V ORDERING INFORMATION Product Marking Package SN317MPI SN317MPI TO-220F-3L SN317MD SN317MD TO-252-3L ◈ Built in OVP, CLP circuit. ◈ Built in TSD Protection. ◈ Output Transistor Safe Area Protection. ◈ Ultra High level of ESD [ Built in ESD Protection Cell ] Equivalent Circuit VIN(3) ▲ Marking Detail Information AUK(①) + G△YWW (②) – Voltage Reference SN317MPI (③) OVP / OCP / ESD Protection Circuitry ① AUK Logo R Limit ② Grade & M Code & Year & Week Code ③ Device Code VOUT(2) Adj(1) KSD-I0O010-000 October, 2010 REV. 00 1 SN317Mx ◈ Pin Configuration 4 1 2 1 3 TO-252-3L 2 3 TO-220F-3L 1: Adj. 1: Adj. 2: VOUT 2: VOUT 3: VIN 3: VIN 4: VOUT ◈ Standard Application Ci is required if regulator is located an appreciable distance from power supply filter. Co is not needed for stability, however, it is necessary to improve transient response. Since IAdj is controlled to less than 0.1mA, the error associated with this term is insignificant in most applications. VOUT = Vref(1.25V) ×( 1+R2/R1)+IadjR2 KSD-I0O010-000 October, 2010 REV. 00 2 SN317Mx ◈ Absolute Maximum Ratings ( Ta = 25℃ ) Limits Parameter Symbol Unit TO-220F-3L Input-Output Voltage Differential TO-252-3L VI-VO 40 V PD Internally Limited W TO-252-3L Power Dissipation TO-220F-3L Thermal Resistance Junction to Case RΘJC 5.0 5.0 C/W Thermal Resistance Junction to Air RΘJA 65 92 C/W Junction Temperature TJ 150 ℃ Operate Temperature Range Topr 0 ~ +125 ℃ Storage Temperature Range Tstg -55 ~ +150 ℃ Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the recommended operating conditions is not implied. Extended exposure to Stresses above the Recommended Operating Conditions may affect device reliability. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max) , the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max) = (TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. KSD-I0O010-000 October, 2010 REV. 00 3 SN317Mx ◈ Electrical characteristics ( VI-VO=5V, IO = 0.1A, TJ=0℃~125℃, PDMAX=7.5W ; unless otherwise specified ) SN317Mx Characteristic Line Regulation * Load Regulation * Adjustable Pin Current Symbol Test Condition* Unit Min. Typ. Max. 3.0V ≤ VI-VO ≤ 40V TA=+25℃ - 0.01 0.04 3.0V ≤ VI-VO ≤ 40V TA=0~+125℃ - 0.02 0.07 10mA ≤ IO ≤ 0.5A TA=+25℃ VO < 5V VO ≥ 5V - 5.0 0.1 25.0 0.5 mV % / VO 10mA ≤ IO ≤ 0.5A TA=0~+125℃ VO < 5V VO ≥ 5V - 20.0 0.3 70.0 1.5 mV % / VO - - 50 100 uA %/V VO(Line) VO(Load) IADJ Adjustable Pin Current Change ∆IADJ 3.0V ≤ VI-VO ≤ 40V 10mA ≤ IO ≤ 0.5A, PD<PDMAX - 2.0 5.0 uA Reference Voltage VREF 3.0V ≤ VI-VO ≤ 40V 10mA ≤ IO ≤ 0.5A , PD <PDMAX 1.20 1.25 1.30 V Temperature Stability STT 0℃ ≤ Tj ≤ 125℃ - 1.0 - % / VO VO =10V, f=120Hz without CADJ - 65.0 - VO =10V, f=120Hz, CADJ = 10uF ** - 80.0 - 10Hz ≤ f ≤ 100kHz - 0.003 - % - 3.5 10.0 mA 0.5 0.9 - 0.15 0.25 - - 0.3 1.0 Ripple Rejection Output Noise Voltage Minimum Load Current to Maintain Regulation RR VNO IL(MIN) ㏈ TA =25℃ VI-VO = 40V VI-VO ≤ 15V, PD < PDMAX Maximum Output Current IO(MAX) Long-Term Stability ST A TA =25℃ VI-VO ≤ 40V, PD < PDMAX TA = +25℃ for end point measurements, 1000HR % * Load and line regulation are specified at constant temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used. ** CADJ is connected between the adjustable pin and ground. KSD-I0O010-000 October, 2010 REV. 00 4 SN317Mx Fig.2 Output Peak Current vs. Input to Output Differential Fig.1 Adjustable Pin Current vs. Junction Temperature 1.2 Output peak Current [A] Adjustable Pin Current [uA] 70 60 50 40 30 VIN=4.25V VOUT=1.25V 20 1.0 0.8 0.6 0.4 0.2 IOUT=30mA 10 0.0 -40 0 25 50 75 100 125 0 5 10 15 20 25 Fig.3 Output Voltage vs. Junction Temperature Fig.4 Dropout Voltage vs. Input Voltage 2.8 1.27 1.26 Dropout Voltage [V] Reference Voltage [V] 2.6 1.25 1.24 VO=100mV 2.4 2.2 2.0 IO=500mA 1.8 1.6 IO=250mA 1.4 1.2 1.23 0 25 50 75 100 125 1.0 -40 150 0 Input Voltage 20V Fixed 10V 15V Output Voltage Deviation 50 0.0 -50 CIN=0.1uF, COUT=1.0uF Iout=50mA, Ta=25℃ 40 60 80 75 100 125 150 100 120 140 Load Current 0.5A Fixed 10V 0A Output Voltage Deviation 100 0 -100 CIN=0.1uF, COUT=1.0uF VIN=15V, Ta=25℃ 0 20 40 60 80 100 120 140 Time [us] Time [us] KSD-I0O010-000 October, 2010 REV. 00 50 Fig.6 Load Transient Response Output Voltage Deviation [mV] Output Voltage Deviation [mV] Fig.5 Line Transient Response 20 25 Junction Temperature [℃] Junction Temperature [℃] 0 35 Input to Output Differential [V] Junction Temperature [℃] -40 30 5 SN317Mx (Unit : mm) Θ ◈ TO-252-3L Outline Dimension Θ Θ Θ ※ Recommend PCB solder land [Unit: mm] 2.50 7.00 7.00 1.50 4.60 KSD-I0O010-000 October, 2010 REV. 00 6 SN317Mx ◈ TO-220F-3L Outline Dimension (Unit : mm) KSD-I0O010-000 October, 2010 REV. 00 7 SN317Mx The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equipments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice. KSD-I0O010-000 October, 2010 REV. 00 8