IL2931 SERIES LOW DROPOUT VOLTAGE REGULATORS 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 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 mirrorimage 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. • Input-to-Output Voltage Differential of Less Then 0.6 V at 100mA • Output Current in Excess of 100 mA • Low Bias Current • 60 V Load Dump Protection • -50 V Reverse Transient Protection Vin • Internal Current Limiting with Thermal Shutdown • Temporary Mirror-Image Protection Ñ 0.1µF • Ideally Suited for Battery Powered Equipment TO-226AA / TO-92 Pin 1. Output 2.Ground 3.Input TO-220 AB Pin 1. Input 2. Ground 3. Output (Heatsink surface connected to Pin 2.) Standard application I L2931 Vout Ño** 100µF * in Ordering Information Device Il2931-5 Il2931-9 Voltage 5.0 V 9.0 V Output Tolerance +5% +5% Package Case Number TO-226AA/TO92, TO-220AB TO-226AA/TO92, TO-220AB Maximum Ratings Rating Input Voltage Continuos Transient Input Voltage (r ≤ 100 ms) Transient Reverse Polarity Input Voltage 1,0% Duty Cycle, r ≤ 100 ms Power Dissipation Case TO-220AA (TO-92) TA = +25 °C Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Power Dissipation Case TO-220AB TA = +25 °C Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Tested Operating Junction Temperature Range Storage Temperature Range 1 Symbol Vin Vin(r) -Vin(r) Value 40 60 -50 Unit Vdc Vpk Vpk PD RΘJA RΘJC Internally Limited 178 83 Watts °C/W °C/W PD RΘJC RΘJC TJ Tstg Internally Limited 65 5.0 -40 to +125 -65 to +150 Watts °C/W °C/W °C C IL2931 SERIES IL2931-5 Electrical characteristics (Vin = 14V, Io = 10mA, Co = 100 µF, Co(ESR) = 0.3 Ω, TJ = +25 °C Note 1, unless otherwise noted) Characteristic Fixed Output Output Voltage Vin = 14 V, Io = 10 mA, TJ = 25 °C Vin = 6.0 to 26 V, Io ≤ 100mA, TJ = -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 m A) Output Impedance Io = 10 mA, ∆Io = 1.0 mA, f = 100 Hz to 10 kHz Bias Current Vin = 14 V, Io = 100 mA, TJ = 25 °C Vin = 6.0 V to 26 V, Io = 10 mA, TJ = -40 to +125 °C Output Noise Voltage (f = 10 Hz to 100 rHzZ) Long -Term Stability Ripple Rejection (f = 120 Hz) Dropout Voltage Io=10A Io=100A Over -Voltage Shutdown Threshold Output Voltage with Reverse Polarity Input (Vin = -15 V) Symbol Min Typ Max 4.75 4.5 5.0 - 5.25 5.5 - 2.0 4.0 14 200 10 30 50 - - 5.8 0.4 30 1.0 Vn S RR Vin-Vo 60 700 20 90 - - V th(ov) -Vo 26 -0.3 0.015 0.06 29.5 0 0.2 0.6 40 - V V Symbol Min Typ Max Unit 8.55 8.1 9.0 - 9.45 9.9 - 4.0 8.0 30 200 20 60 100 - - 5.8 0.4 30 1.0 Vn S RR Vin-Vo 60 700 20 90 - - V th(ov) -Vo 26 -0.3 0.015 0.06 29.5 0 0.2 0.6 40 - Vo Regline Regload Zo IB Unit Vcd mV mV mΩ mA µVrms mV/kHz dB V IL2931-9 Electrical characteristics (Vin = 16V, Io = 10 mA) Characteristic Fixed Output Output Voltage Vin = 16 V, Io = 10 mA, TJ = 25 °C Vin =10 to 26 V, Io ≤ 100mA, TJ = -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 m A) Output Impedance Io = 10 mA, ∆Io = 1.0 mA, f = 100 Hz to 10 kHz Bias Current Vin = 14 V, Io = 100 mA, TJ = 25 °C Vin = 6.0 V to 26 V, Io = 10 mA, TJ = -40 to +125 °C Output Noise Voltage (f = 10 Hz to 100 rHzZ) Long -Term Stability Ripple Rejection (f = 120 Hz) Dropout Voltage Io=10A Io=100A Over - Voltage Shutdown Threshold Output Voltage with Reverse Polarity Input (Vin = -15 V) Vo Regline Regload Zo IB Vcd mV mV mΩ mA µVrms mV/kHz dB V V V Note : 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambied as possible. 2