LOW DROPOUT VOLTAGE REGULATORS

www.DataSheet4U.com LM2931, NCV2931 Series 100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection The LM2931 series consists of positive fixed and adjustable output voltage regulators that are specifically designed to maintain proper regulation with an extremely low input−to−output voltage differential. These devices are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output. Designed primarily to survive in the harsh automotive environment, these devices will protect all external load circuitry from input fault conditions caused by reverse battery connection, two battery jump starts, and excessive line transients during load dump. This series also includes internal current limiting, thermal shutdown, and additionally, is able to withstand temporary power−up with mirror−image insertion. Due to the low dropout voltage and bias current specifications, the LM2931 series is ideally suited for battery powered industrial and consumer equipment where an extension of useful battery life is desirable. The ‘C’ suffix adjustable output regulators feature an output inhibit pin which is extremely useful in microprocessor−based systems. Features http://onsemi.com FIXED OUTPUT VOLTAGE TO−92 Z SUFFIX CASE 29 Pin 1. Output 2. Ground 3. Input 1 2 3 TO−220 T SUFFIX CASE 221AB 1 2 3 DPAK DT SUFFIX CASE 369A D2PAK D2T SUFFIX CASE 936 SOT−223 ST SUFFIX CASE 318H 1 3 Pin 1. Input 2. Ground 3. Output • • • • • • • • • • • • Input−to−Output Voltage Differential of < 0.6 V @ 100 mA Output Current in Excess of 100 mA Low Bias Current 60 V Load Dump Protection −50 V Reverse Transient Protection Internal Current Limiting with Thermal Shutdown Temporary Mirror−Image Protection Ideally Suited for Battery Powered Equipment Economical 5−Lead TO−220 Package with Two Optional Leadforms Available in Surface Mount SOP−8, D2PAK and DPAK Packages High Accuracy (±2.5%) Reference (LM2931AC) Available Pb−Free Packages are Available 1 3 3 1 ADJUSTABLE OUTPUT VOLTAGE TO−220 TH SUFFIX CASE 314A 1 5 TO−220 1 TV SUFFIX CASE 314B 5 Applications • Battery Powered Consumer Products • Hand−held Instruments • Camcorders and Cameras SOIC−8 D SUFFIX CASE 751 FIXED N.C. GND Input 8 1 5 4 N.C. GND Output Output Inhibit GND Input TO−220 T SUFFIX CASE 314D 1 5 Pin 1. Adjust 2. Output Inhibit 3. Ground 4. Input 5. Output D2PAK D2T SUFFIX 1 CASE 936A 1 8 5 ADJUSTABLE 5 8 4 1 Adjust GND Output ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet. DEVICE MARKING INFORMATION See general marking and heatsink information in the device marking section on page 15 of this data sheet. (Top View) (Top View) © Semiconductor Components Industries, LLC, 2007 1 March, 2007 − Rev. 20 Publication Order Number: LM2931/D LM2931, NCV2931 Series Representative Schematic Diagram Input 6.0 6.0 k 350 500 Output 30 k 30 k * 3.94 k Adjust 3.0 k EPI Bias 30 k 30 k 6.8 V Output Inhibit 50 k 48 k 180 k 184 k 5.8 V 92.8 k * 11.5 k Ground *Deleted on Adjustable Regulators This device contains 26 active transistors. 35 k 10 k http://onsemi.com 2 LM2931, NCV2931 Series MAXIMUM RATINGS Rating Input Voltage Continuous Transient Input Voltage (t ≤ 100 ms) Transient Reverse Polarity Input Voltage 1.0% Duty Cycle, t ≤ 100 ms Electrostatic Discharge Sensitivity (ESD) Human Body Model (HBM) Class 2, JESD22 A114−C Machine Model (MM) Class A, JESD22 A115−A Charged Device Model (CDM), JESD22 C101−C Power Dissipation Case 29 (TO−92 Type) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 221A, 314A, 314B and 314D (TO−220 Type) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 318H (SOT−223) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 369A (DPAK) (Note 1) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 751 (SOP−8) (Note 2) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Case 936 and 936A (D2PAK) (Note 3) TA = 25°C Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Operating Ambient Temperature Range Operating Die Junction Temperature Storage Temperature Range Symbol VI VI(t) −VI(t) Value 40 60 −50− Unit Vdc Vpk Vpk − − − 2000 200 2000 V V V PD RqJA RqJC PD RqJA RqJC PD RqJA RqJC PD RqJA RqJC PD RqJA RqJC PD RqJA RqJC TA TJ Tstg Internally Limited 178 83 Internally Limited 65 5.0 Internally Limited 242 21 Internally Limited 92 6.0 Internally Limited 160 25 Internally Limited 70 5.0 −40 to +125 +150 −65 to +150 W °C/W °C/W W °C/W °C/W W °C/W °C/W W °C/W °C/W W °C/W °C/W W °C/W °C/W °C °C °C 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. 1. DPAK Junction−to−Ambient Thermal Resistance is for vertical mounting. Refer to Figure 25 for board mounted Thermal Resistance. 2. SOP−8 Junction−to−Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 24 for Thermal Resistance variation versus pad size. 3. D2PAK Junction−to−Ambient Thermal Resistance is for vertical mounting. Refer to Figure 26 for board mounted Thermal Resistance. http://onsemi.com 3 LM2931, NCV2931 Series ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 mF, CO(ESR) = 0.3 W, TA = 25°C [Note 4]) LM2931−5.0/NCV2931−5.0 Characteristic FIXED OUTPUT Output Voltage Vin = 14 V, IO = 10 mA, TA = 25°C Vin = 6.0 V to 26 V, IO ≤ 100 mA, TA = − 40° to +125°C Line Regulation Vin = 9.0 V to 16 V Vin = 6.0 V to 26 V Load Regulation (IO = 5.0 mA to 100 mA) Output Impedance IO = 10 mA, DIO = 1.0 mA, f = 100 Hz to 10 kHz Bias Current Vin = 14 V, IO = 100 mA, TA = 25°C Vin = 6.0 V to 26 V, IO = 10 mA, TA = − 40° to +125°C Output Noise Voltage (f = 10 Hz to 100 kHz) Long Term Stability Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 10 mA IO = 100 mA Over−Voltage Shutdown Threshold Output Voltage with Reverse Polarity Input (Vin = −15 V) Vth(OV) −VO Vn S RR VI−VO − − 26 −0.3 0.015 0.16 29.5 0 0.2 0.6 40 − − − 26 −0.3 0.015 0.16 29.5 0 0.2 0.6 40 − V V IB − − − − 60 5.8 0.4 700 20 90 30 1.0 − − − − − − − 60 5.8 0.4 700 20 90 30 1.0 − − − mVrms mV/kHR dB V Regload ZO − 200 − − 200 − mA Regline − − − 2.0 4.0 14 10 30 50 − − − 2.0 4.0 14 10 30 50 mV mW VO 4.75 4.50 5.0 − 5.25 5.50 4.81 4.75 5.0 − 5.19 5.25 mV V Symbol Min Typ Max LM2931A−5.0/NCV2931A−5.0 Min Typ Max Unit 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 5. NCV devices are qualified for automotive use. http://onsemi.com 4 LM2931, NCV2931 Series ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 mF, CO(ESR) = 0.3 W, TA = 25°C [Note 6]) LM2931C/NCV2931C Characteristic ADJUSTABLE OUTPUT Reference Voltage (Note 7, Figure 18) IO = 10 mA, TA = 25°C IO ≤ 100 mA, TA = − 40 to +125°C Output Voltage Range Line Regulation (Vin = VO + 0.6 V to 26 V) Load Regulation (IO = 5.0 mA to 100 mA) Output Impedance IO = 10 mA, DIO = 1.0 mA, f = 10 Hz to 10 kHz Bias Current IO = 100 mA IO = 10 mA Output Inhibited (Vth(OI) = 2.5 V) Adjustment Pin Current Output Noise Voltage (f = 10 Hz to 100 kHz) Long−Term Stability Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 10 mA IO = 100 mA Over−Voltage Shutdown Threshold Output Voltage with Reverse Polarity Input (Vin = −15 V) Output Inhibit Threshold Voltages Output “On”: TA = 25°C TA = − 40° to +125°C Output “Off”: TA = 25°C TA = − 40° to +125°C Output Inhibit Threshold Current (Vth(OI) = 2.5 V) Vref 1.14 1.08 VO range Regline Regload ZO − IB − − − IAdj Vn S RR VI−VO − − Vth(OV) −VO Vth(OI) − − 2.50 3.25 Ith(OI) − 2.15 − 2.26 − 30 1.90 1.20 − − 50 − − 2.50 3.25 − 2.15 − 2.26 − 30 1.90 1.20 − − 50 mA 26 −0.3 0.015 0.16 29.5 0 0.2 0.6 40 − − − 26 −0.3 0.015 0.16 29.5 0 0.2 0.6 40 − V V V − − − 0.10 6.0 0.4 0.2 0.2 140 0.4 0.003 − 1.0 1.0 − − − − − − − − − − 0.10 6.0 0.4 0.2 0.2 140 0.4 0.003 − 1.0 1.0 − − − − mA mVrms/V %/kHR %/V V 40 − − 40 − mA 3.0 to 24 − − 1.20 − 2.7 to 29.5 0.2 0.3 1.26 1.32 − 1.5 1.0 1.17 1.15 3.0 to 24 − − 1.20 − 2.7 to 29.5 0.2 0.3 1.23 1.25 − 1.5 1.0 V mV/V %/V mW/V V Symbol Min Typ Max LM2931AC/NCV2931AC Min Typ Max Unit 6. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 7. The reference voltage on the adjustable device is measured from the output to the adjust pin across R1. http://onsemi.com 5 LM2931, NCV2931 Series 200 Vin −VO , DROPOUT VOLTAGE (mV) Vin −VO , DROPOUT VOLTAGE (mV) 160 120 80 40 0 Vin = 14 V DVout = 100 mV TJ = 25°C 300 Vin = 14 V DVout = 100 mV 200 IO = 100 mA 100 IO = 50 mA IO = 10 mA 0 0 25 50 75 100 125 0 20 40 60 IO, OUTPUT CURRENT (mA) 80 100 TJ, JUNCTION TEMPERATURE (°C) Figure 1. Dropout Voltage versus Output Current Figure 2. Dropout Voltage versus Junction Temperature 350 I O , OUTPUT CURRENT (mA) 6.0 5.0 4.0 3.0 2.0 1.0 0 RL = 50 W IO = 100 mA Vout = 5.0 V TA = 25°C TJ = −40°C 250 TJ = 85°C TJ = 25°C 150 Dashed lines below Vin = 5.0 V are for Adjustable output devices only. 50 0 5.0 10 15 20 Vin, INPUT VOLTAGE (V) 25 30 VO , OUTPUT VOLTAGE (V) 0 1.0 2.0 3.0 4.0 Vin, INPUT VOLTAGE (V) 5.0 6.0 Figure 3. Pe