TECHNICAL DATA 5V/10 V Low-Drop Voltage Regulator ILE4266-2 Functional Description ILE 4266-2 is a low-drop voltage regulator for 5 V or 10 V supply in a P-SOT223-4-2 SMD package. The IC regulates an input voltage Vi in the range of 5.5 V/10.5 V < Vi < 45 V to VQrated = 5 V/10 V. The maximum output current is more than 120 mA. The IC can be switched off via the inhibit input, which causes the current consumption to drop below 10 uA. The IC is shortcircuit-proof and incorporates temperature protection that disables the IC an overheating. ILE 4266-2G P-SOT223-4-2 Features TA = -40° ÷ 125°C • Output voltage 5 V or 10 V • Output voltage tolerance ≤± 2 % • 120 mA current capability • Very low current consumption • Low-drop voltage • Overtemperature protection • Reverse polarity proof • Wide temperature range • Suitable for use in automotive electronics • Inhibit Dimensioning Information on External Components The input capacitor CI is necessary for compensating line influences. Using a resistor of approx. 1 Ohm in series with CI, the oscillating of input inductivity and input capacitance can be clamped. The output capacitor CQ is necessary for the stability of the regulating circuit. Stability is guaranteed at values CQ ≥10 uF and an ESR ≤10 Ohm within the operating temperature range. January, 2011, Rev. 01 ILE4266-2 Pin Definitions and Functions Pin Symbol 1 VI 2 3 Inh VQ 4 GND Function PIN CONFIGURATION Input voltage; block to ground directly at the IC with a ceramic capacitor. Inhibit; low-active input. Output voltage; block to ground with a capacitor. C ≥10 uF. Ground Circuit Description The device produces a precise reference voltage, that is very accurate due to resistor adjustment. A control amplifier compares the divided output voltage to this reference voltage and drives the base of the PNP series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The IC also incorporates a number of protection circuitry for: • Overload • Overtemperature • Reverse polarity January, 2011, Rev. 01 ILE4266-2 Maximum & Absolute Maximum Ratings Maximum Ratings Parameter Symbol Absolute Maximum Ratings min. max. -40 150 -50 150 -42 45 internally limited 50 -1 16 internally limited -42 45 25* Unit C o C V A min. -40 6 - mA V A 4,9 - V C /W - max. 125 28 internally limited 15 5,1 internally limited 25* - 100* 220* Junction temperature, ТJ Storage temperature, ТS Input voltage, VI Input current, II o Current on common pin ,IGND Output voltage, UQ Output current (pin 3) Inhibit voltage, UINH Thermal resistance junction case, Rth jc Thermal resistance junction ambient, Rth ja, - on PCB, - without heat dissipater o °С/Вт - 100* 220* * Thermal resistance junction ambient for IC with heat dissipater is calculated by formula: Rth ja = Rth jc + Rth ca , (1) o Rth jc - thermal resistance junction case, C /W. О Application circuit and heat dissipater have to provide TJ ≤ 125 С. Maximum power Ptot,Вт, dissipated by IC for TA , is calculated by formula: Ptot = (125 - TA) / Rth ja , (2) О 125 – maximum permitable operating junction temperature, С. * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Electrical Characteristics VI = 13.5 V; – 40 oC ≤Tj ≤ 125 oC Parameter Symbol Limit Values min. typ. max. Unit Test Condition 5 mA ≤IQ ≤ 100 mA 6 V ≤Vi ≤ 28 V – o VINH = 0 V; Tj ≤ 100 C IQ = 1 mA Inhibit ON IQ = 100 mA Inhibit ON 1) IQ = 100 mA IQ = 5 to 100 mA VI = 6 V VI = 6 V to 28 V IQ = 5 mA fr = 100 Hz, Vr = 0.5 VSS Output voltage VQ 4.9 5 5.1 V Output-current limitation Current consumption Iq = II – IQ IQ Iq 150 0 – 10 0.25 – – 10 400 15 0.5 40 mA uA uA mA V mV Drop voltage Load regulation VDr ∆VQ 120 – – – – – Supply-voltage regulation ∆VQ – 15 30 mV Supply-voltage rejection SVR – 54 – dB Inhibit Inhibit on voltage VINH, on 3.5 – – V – Inhibit off voltage VINH, off – – – 0.8 V – Inhibit current IINH 5 15 25 uA Ve = 5 V 1) Drop voltage = VI – VQ (measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5 V). January, 2011, Rev. 01 ILE4266-2 Block Diagram Application Circuit January, 2011, Rev. 01 ILE4266-2 Package Dimension P-SOT 223-4-2 January, 2011, Rev. 01