TECHNICAL DATA 5V/400mA Low Drop Voltage ILE4275 ILE4275 is integrated circuits of voltage regulator 5V/400 mA with low-drop voltage. The IC of voltage regulator 5V/400 mA are purposed to supply DC voltage 5V with 2% accuracy at a range of input voltages from 5,6 to 40 V , with drop voltage 0,5V at load current 300 mA. The IC is used in power supply units of electronic devices, including automotive electronics. Maximum input voltage is 45 V. The IC is tolerant to over voltage of both polarities (positive & negative), provide internal current limitation and output voltage thermal shutdown. Reset function is available. The IC realized in 5-pin plastic packages TO-263-5 and TO-252-5 ILE4275D2 TO-263-5 ILE4275D0 TO-252-5 ORDERING INFORMATION Device Operating Temperature Range ILE4275D2 ILE4275D2T ILE4275DOT Tj = -40 to 150 C Package Shipping TO-263-5 Tube TO-263-5 Tape & Reel TO-252-5 Tape & Reel Features High accuracy of the output voltage 5 V 2%; Low-drop voltage ; Built-in overheating protection; Reverse polarity proof; Low consumption current; Input voltage up to 45 V; Suitable for use in automotive electronics; Wide junction temperature range -40 … +150C; Reset function. 1 January 2011, Ver.01 ILE4275 Table 1. Pins Description Chip pad number 01 Package pin number 01 Symbol 02 02 RO 03 03 GND 04 04 D Reset delay pin 05, 06 05 Q Output 07 - 10 - - Not bonded (not used) Function I Input Reset output Common pin (Ground) Block Diagram Saturation control & protection circuit Temperature sensor VT1 01 05 I A1 Adjustment Reference voltage source Q R4 R1 A2 Reset + 02 RO generator - R2 04 D R3 03 GND A1 – control amplifier; A2 – buffer; R1 – R4 –resistors; VT1 - transistor Figure 1. January 2011, Ver.01 ILE4275 Table 2. Absolute Maximum Ratings Symbol Parameter Min. Max. ТJ Junction temperature Тstg Storage temperature VI Input voltage VD Reset delay pin voltage ID Reset delay pin current VR Reset pin voltage IRO Reset pin current VQ Output voltage _________ * Ambient temperature is indicated. ** Voltage is not applied to input I -40* -50 -42 -0.3** -2 -0,3** -5 -1,0** 150 150 45 7** 2 25** 5 16** Unit o C C V V mA V mA V o * 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. Table 3. Recommended Operation Rate Symbol Parameter Min. Max. ТJ VI Junction temperature Input voltage -40* 5,6 150 40 VQ Output voltage 4,9 5,1 Unit o C V V Note: Maximum power Ptot,W, dissipated by IC at ambient temperature TA , is calculated by formula: Ptot = (150 - TA) / Rth j-a , (1) 150 – maximum permissible operating junction temperature, OC. Rth j-a - thermal resistance junction ambient (for IC without heat sink), oC /W, for ILE4275 without heat sink Rth ja is equal 80 oC /W for ILE4275 without heat sink Rth ja is equal 65 oC /W for IC with heat sink Rth ja is calculated by formula Rth j-a = Rth j-c + Rth c-a , (2) Rth j-c - thermal resistance junction case, oC /W. Rth jc = 4 oC/W. Thermal resistance case-ambient Rth c-a is determined by heat sink design and is selected by IC customer. Application circuit and heat sink and ambient temperature have to provide junction temperature not more TJ 150 OC. _________ * Ambient temperature is indicated. January 2011, Ver.01 ILE4275 Table 4. Electric Parameters (VI = 13.5 V, VADJ > 2.0 V, -40°C < TJ < 150°C unless otherwise specified) Symbol Iq IQmax Vdr VQ VQ(V) Parameter Consumption current Iq = II - IQ Maximum output current Drop voltage Output voltage Test Condition Min. Max. Unit IQ = -1 mA, TJ = 25 oC IQ = -1 mA, TJ < 85 oC IQ = -250 mA IQ = -400 mA IQ = -300 mA Note 2 6 V VI 28 V -5 mA IQ -400 mA 6 V VI 40 V -5 mA IQ -200 mA 8 V VI 32 V IQ = -5 mA -5 mA IQ -400 mA 450 - 0.2 0.22 10 22 0.5 mA 4.9 5.1 V 4.9 5.1 Supply (input) voltage regu-15 15 lation of output voltage 30 VQ(I) Load current regulation of output voltage Reset generator parameters VRT Reset generator switching 4.5 4.8 threshold voltage IROH Reset output leakage VROH = 5 V 10 current VROL Reset output low level volt0.4 Rext 5 k, age VQ 1 V VDL RO output switching to low 0,2 0.7 threshold voltage VDV RO output switching to high 1,5 2.2 threshold voltage Id Charge current VD = 1 V 3,0 9.0 td Reset delay time CD = 47 nF 10 22 tRR Reset reaction time CD = 47 nF 2 Notes 1. Measurement of electric parameters is processed with connected input capacities CI1 = 100 F, CI2 = 100 nF and output capacity CQ = 22 F. 2. Drop voltage Vdr = VI - VQ is measured, when the output voltage VQ has dropped 100mV from the nominal value obtained at VI = 13.5 V. __________ * Ambient temperature is indicated. mA V mV mV V A V V V A ms s January 2011, Ver.01 ILE4275 Table 5. Typical Electric Parameters (VI = 13.5 V, -40°C < TJ < 150°C unless otherwise specified) Symbol Parameter Test Condition Typical Value Unit PSRR Ripple rejection ratio fr = 100 Hzц, IQ = -100 mA Vr = 0,5** V (p - p) 60 dB Temperature factor of output 0,5 mV/ oC voltage _______ * Ambient temperature is indicated. ** It is permitted to measure at Vr(р - p) = 3 V, but for that PSRR norm to be revised dVQ/dT Typical Application Diagram Input + C1 1000F Q I C2 100nF 04 Output 05 01 + ILE4275 C3 22F R1 5 k 02 D RO GND 03 Figure 2. January 2011, Ver.01 ILE4275 Operation Timing Diagram VI, V (pin 01) tRR VQ, V (pin 05) URT, В DV VD, V (pin 04) Id = Dt CD VDU, V VDL, V tRR VR, V (pin 02) td UROH, V UROL, V t, s Power-onReset Thermal shutdown Voltage dip at input Undervoltage at input Overload at output Figure 3. January 2011, Ver.01 ILE4275 Package Dimension TO-263-5 January 2011, Ver.01 ILE4275 TO-252-5 January 2011, Ver.01