ILE4260-2 IKSEMICON | Alldatasheet

Document overview

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Technical content

Features

  • Low-drop voltage
  • Very low quiescent current
  • Low starting current consumption
  • Integrated temperature protection
  • Protection against reverse polarity
  • Input voltage up to 42 V
  • Overvoltage protection up to 65 V (≤ 400 ms)
  • Short-circuit proof
  • Suited for automotive electronics
  • Wide temperature range

(top view) Pin Definitions and Functions (ILE 4260 and ILE 4260 S) Pin No. Symbol Function

1 VI Input; block directly to ground at the IC by a 470-nF capacitor

2 QVRES Reset output; open collector output controlled by the reset

3 GND Ground

4 DRES Reset delay; wired to ground with a capacitor

5 VQ 5-V output voltage; block to ground with a 22-µF capacitor

The control amplifier compares a referenc e voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturat ion of the power element. If the output voltage goes below 96% of its typical value, an external capacitor is discharged on pin 4 by the reset generator. If the voltage on t he capacitor reaches the lower threshold VST, a reset signal is issued on pin 2 and not cancelled again until the upper threshold VDT is ex ceeded. For an output current of less than IQN Off = 10 mA the standby changeover turns off the reset generator. T he latter is turned on again when the output current increases, the output voltage drops below 4.2 V or the delay capacitor is discharged by external measures. The IC also incorporates a number of internal circuits for protection against:

  • Overload
  • Overvoltage
  • Overtemperature
  • Reverse polarity Block Diagram

Limit Values Parameter Symbol min max Unit Remarks Input (Pin 1) Input voltage VI VI – 42 V V t ≤ 400 ms Input current II – 1.6 A – Reset Output (Pin 2) Voltage VR –0.3 42 V – Current IR – – – internally limited Ground (Pin 3) Current IGND –0.5 – A – Reset Delay (Pin 4) Voltage VD – 0.3 42 V – Current ID – – – internally limited Output (Pin 5) Differential voltage VI – VQ – 5.25 VI V – Current IQ – 1.4 A – Temperature Storage temperature Tstg – 50 150 °C – Operating Range Input voltage VI – 32 V 1) Junction temperature Tj – 40 165 °C – Thermal Resistances Junction ambient Rthja – 65 K/W – Junction case Rthjc – 3 K/W – 1) See diagram “Output Current versus Input Voltage”

VI = 13.5 V; Tj = 25 °C; (unless otherwise specified) Limit Values Parameter Symbol min. typ. max. Unit Test Condition Normal Operation Output voltage VQ 4.75 5.0 5.25 V 25 mA ≤ IQ ≤ 500 mA

6 V ≤ VI ≤ 28 V

– 40 °C ≤ Tj ≤ 125 °C Short -circuit current ISC 500 1000 – mA VI =17 V to 28 V; VQ = 0 V Current consumption Iq = II – IQ Iq – 8.5 10 mA1) IQ = 150 mA Current consumption Iq = II – IQ Iq – 50 65 mA1) IQ = 500 mA Current consumption Iq = II – IQ Iq – – 80 mA1) VI ≤ 6 V IQ = 500 mA Drop voltage VDR – 0.35 0.5 V VI = 4.5 V; IQ = 0.5 A Drop voltage VDR – 0.2 0.3 V VI = 4.5 V; IQ = 0.15 A Load regulation ∆VQ – 15 35 mV 25mA≤ IQ ≤ 500 mA Supply-voltage regulation ∆VQ – 15 50 mV VI ≤ 6 V to 28 V; IQ = 100 mA Supply-voltage regulation ∆VQ – 5 25 mV VI ≤ 6 V to 16 V; IQ = 100 mA Ripple rejection SVR – 54 – dB f = 100 Hz; Vr = 0.5 Vpp Temperature drift of output voltage1) αVQ – 2× 10–4 – 1/°C – Standby Operation Quiscent current; Iq = II – IQ Iq – 500 700 µA 10V ≤ VI ≤ 16 V; IQ = 0mA Quiscent current; Iq = II – IQ Iq – 750 850 µA 10V ≤ VI ≤ 16 V; IQ = 5mA

Characteristics (cont’d) VI = 13.5 V; Tj = 25 °C; (unless otherwise specified) Limit Values Parameter Symbol min. typ. max. Unit Test Condition Standby Off/Normal On Current consumption IqSOFF – 1.0 1.2 mA see test diagram Current consumption IqNON – 1.7 2.2 mA see test diagram Normal Off/Standby On Current consumption IqNOFF – 1.55 2.00 mA see test diagram Current consumption IqSON – 850 1050 µA see test diagram Switching threshold IQNOFF 7.5 10 12.5 mA see test diagram Switching hysteresis ∆IQ 2.25 3 4 mA see test diagram Reset Generator Switching threshold VRT 94 96 97 % in % of VQ; IQ > 500mA;VI = 6 V Saturation voltage VR – 0.25 0.40 V IR = 3 mA;VI = 4.5 V Reverse current IR – – 1 µA VR = 5 V Charge current ID 7 10 13 µA – Switching threshold VST 0.9 1.1 1.3 V – Delay switching threshold VDT 2.15 2.50 2.75 V – Delay time tD – 25 – ms CD = 100 nF Delay time tt – 5 – µs CD = 100 nF General Data Turn-Off voltage VIOFF 40 43 45 V IQ < 1 mA Turn-Off hysteresis ∆VI – 3.0 – V – Leakage current IQS – 500 – µA VQ = 0 V; VI = 45 V Reverse output current IQR – – 1.5 mA VQ = 5 V; VI = open 1) See diagram

Time Response in Standby Condition