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| TECHNICAL DATA 5-V Low-Drop Fixed-Voltage Regulator ILE 4264 G is a 5-V low-drop fixed-voltage regulator in an SOT-223 package. The IC regulates an input voltage VI in the range 5.5 V < VI < 45 V to VQrated = 5.0 V. The maximum output current is more than 120 mA. This IC is shortcircuit-proof and features temperature protection that disables the circuit at overtemperature. Features: Output voltage tolerance 2 % Low-drop voltage Very low current consumption Overtemperature protection Short-circuit proof Suitable for use in automotive electronics Reverse polarity. ILE 4264G P-SOT223-4-1 ILE4264G Dimensioning Information on External Components The input capacitor Ci is necessary for compensating line influences. Using a resistor of approx. 1 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 10F and an ESR 10 within the operating temperature range. Pin Definitions and Functions Pin 1 2, 4 3 Symbol Function Input voltage; block to ground directly on IC with ceramic capacitor Ground 5-V output voltage; block to ground with 10-F capacitor, ESR < 10 VI GND VQ Circuit Description The control amplifier compares a reference voltage, which is kept highly precise 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, working as a function of load current, prevents any over-saturation of the power element. The IC is additionally protected against overload, overtemperature and reverse polarity. 1 ILE4264G Pin Configuration (top view) Absolute Maximum Ratings Tj = - 40 to 150 C Limit Values min. -42 - -1 - 50 - -50 5.5 -40 - - max 45 - 16 - - 150 150 45 150 100 25 V - V - mA C C V C K/W K/W Parameter Input Input voltage Input current Output Output voltage Output current Ground Current Temperatures Junction temperature Storage temperature Operating Range Input voltage Junction temperature Thermal Resistances System-air System-case Symbol Unit Notes VI II VQ IQ IGND Tj Tstg VI Tj Rth SA Rth SC - limited internally - limited internally - - - - - soldered in - 2 ILE4264G Block Diagram Characteristics VI = 13.5 V; - 40 C Tj 125 C, unless specified otherwise Limit Values Parameter Output voltage Symbol VQ min 4.9 Typ 5.0 Max 5.1 V Unit Test Condition 5 mA IQ 100 mA 6 V VI 28 V Output-current limiting Current consumption Iq = II - IQ Current consumption Iq = II - IQ Drop voltage Load regulation IQ Iq Iq Vdr VQ 120 - - - - 150 - 10 0.25 - - 400 15 0.5 40 mA A mA V mV - IQ = 1 mA IQ = 100 mA IQ = 100 mA1) IQ = 5 to 100 mA VI = 6 V Supply-voltage regulation Supply voltage suppression VQ SVR - - 15 54 30 - mV dB VI = 6 to 28 V IQ = 5 mA fr = 100 Hz Vr = 0.5 Vpp 3 ILE4264G Application Circuit 4 ILE4264G 5 ILE4264G Package Dimensions P-SOT 223-4-1 6 |
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