IL2931 INTEGRAL | Alldatasheet

Document overview

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Technical content

LOW DROPOUT VOLTAGE REGULATORS The LM2931 series consists of positive fixed and adjust- able 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 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.

  • 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
  • Internal Current Limiting with Thermal Shutdown
  • Temporary Mirror-Image Protection
  • Ideally Suited for Battery Powered Equipment

Ordering Information

Transient Input Voltage (r ≤ 100 ms) Vin(r) Vpk Transient Reverse Polarity Input Voltage 1,0% Duty Cycle, r ≤ 100 ms -Vin(r) -50 Vpk Power Dissipation Case TO-220AA (TO-92) TA = +25 °C Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case PD RΘJA RΘJC Internally Limited 178 Watts °C/W °C/W Power Dissipation Case TO-220AB TA = +25 °C Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case PD RΘJC RΘJC Internally Limited 5.0 Watts °C/W °C/W Tested Operating Junction Temperature Range TJ -40 to +125 Storage Temperature Range Tstg -65 to +150 C TO-226AA / TO-92 Pin 1. Output 2.Ground 3.Input Pin 1. Input 2. Ground 3. Output (Heatsink surface connected to Pin 2.) TO-220 AB Ño** 100µF Ñin* 0.1µF Vout Vin IL2931 Standard application Output Package Case Device Voltage Tolerance Number Il2931-5 5.0 V +5% TO-226AA/TO92, TO-220AB Il2931-9 9.0 V +5% TO-226AA/TO92, TO-220AB

Electrical characteristics

(Vin = 14V, Io = 10mA, Co = 100 µF, Co(ESR) = 0.3 Ω, TJ = +25 °C Note 1, unless otherwise noted) Characteristic Symbol Min Typ Max Unit 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 Vo 4.75 4.5 5.0 5.25 5.5 Vcd Line Regulation Vin = 9.0 V to 16 V Vin = 6.0 V to 26 V Regline 2.0 4.0 mV Load Regulation(Io = 5.0 mA to 100 m A) Regload mV Output Impedance Io = 10 mA, ∆Io = 1.0 mA, f = 100 Hz to 10 kHz Zo 200 mΩ 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 IB 5.8 0.4 1.0 mA Output Noise Voltage (f = 10 Hz to 100 rHzZ) Vn 700 µVrms Long -Term Stability S mV/kHz Ripple Rejection (f = 120 Hz) RR dB Dropout Voltage Io=10A Io=100A Vin-Vo 0.015 0.06 0.2 0.6 V Over -Voltage Shutdown Threshold V th(ov) 29.5 V Output Voltage with Reverse Polarity Input (Vin = -15 V) -Vo -0.3 V IL2931-9 (Vin = 16V, Io = 10 mA) Characteristic Symbol Min Typ Max Unit 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 Vo 8.55 8.1 9.0 9.45 9.9 Vcd Line Regulation Vin = 9.0 V to 16 V Vin = 6.0 V to 26 V Regline 4.0 8.0 mV Load Regulation(Io = 5.0 mA to 100 m A) Regload 100 mV Output Impedance Io = 10 mA, ∆Io = 1.0 mA, f = 100 Hz to 10 kHz Zo 200 mΩ 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 IB 5.8 0.4 1.0 mA Output Noise Voltage (f = 10 Hz to 100 rHzZ) Vn 700 µVrms Long -Term Stability S mV/kHz Ripple Rejection (f = 120 Hz) RR dB Dropout Voltage Io=10A Io=100A Vin-Vo 0.015 0.06 0.2 0.6 V Over - Voltage Shutdown Threshold V th(ov) 29.5 V Output Voltage with Reverse Polarity Input (Vin = -15 V) -Vo -0.3 V Note : 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambied as possible.