ILE4270G IC OF 5 V/550MA POWER VOLTAGE REGULATOR WITH LOW RESIDUAL VOLTAGE (ANALOG OF TLE4270G BY SIEMENS) ILE4270G (analog TLE4270G by Siemens) – an integrated circuit of 5V/550 mA power voltage regulator with low residual voltage, implemented in 5-pin plastic package of P-ТО263-5-1 type in accordance with Siemens specification. IC of 5V/550 mA power voltage regulator is purposed for producing 5V constant voltage with 2% accuracy with residual voltage less than 0.7V at load current 550 mA and input voltage up to 26V. It is suitable for use in power supply in electronic equipment including automotive electronics. Maximum input voltage is 42V. IC has a protection against overvoltage of positive and negative polarity, internal limitation of max load current with temperature reset of output voltage. It has a reset function. Features: • • • • • • • • • • High precision of output voltage 5V ± 2% Low residual voltage Imbedded overtemperature protection Reverse polarity protection Very low consumption current Input voltage up to 42V Overvoltage protection up to 65V (≤400mc) Short-circuit proof Suitable for use in automotive electronics Junction temperature range from minus 40 to +125°С • Adjustable reset time 1 ILE4270G ILE4270G IC BLOCK DIAGRAM Transistor saturation protection and control circuit Temperature sensor Вход 5 1 Control amplifier Adjustment Reference voltage source Output Buffer + Reset oscillator – 2 Reset oscillator input 4 Output of reset signal delay 3 Ground 2 ILE4270G Pin definitions Pin № 1 2 3 4 5 Symbol I RO GND D Q Description Input Reset Output Ground Reset delay 5-V Output Function Input Reset oscillator output Common Output of reset signal delay Output o o TYPICAL ELECTRICAL CHARACTERISTICS (UI =13.5V, -40 C ≤ TJ ≤ 125 C, unless otherwise specified) Parameter, unit Switching delay time, mc Low reset voltage, mV Symbol td UROL Test conditions Typical value Cd = 100 nF 13 Rintern = 30 kOhm 60 1.0 V ≤ UQ ≤ 4.5 V Pulsation smoothing rate, dB PSRR fr = 100 Hz, 54 Ur = 0.5 USS Notes: Testing of electrical characteristics is carried out in compliance with connection circuit given in Annex А ABSOLUTE MAXIMUM RATINGS Parameter Unit Limit ratings min max -40 125 UQ + 0.7 46 - Die temperature, ТJ Storage temperature, Тstg Input voltage, UI Input voltage, UI °C °C В В Input current, II А - Output voltage, UQ, Output current, IQ В А 4.9 - мА В A 0 - В В - A - °С/Вт °С/Вт - Current on output "Ground", IM Voltage on output Reset Output, UR Current on output Reset Output, IR Reset Delay, UD Voltage of reset delay output Reset Delay, UD Current of reset delay output Reset Delay, ID Thermal resistance junction-ambient, Rth ja Thermal resistance junction-case, Rthjc (PTO-263-5-1 / P-TO-220-5-12) 3 Internally limited 5.1 Internally limited Internally limited Internally limited 70* 3* Maximum ratings min max 150 -50 150 -42 46 65** -1.0 -0.5 -0.3 -0.3 -0.3 - Internally limited 16 Internally limited – 7 Internally limited 7 7 Internally limited 70* 3* ILE4270G Note – Absolute maximum power Ptot,W, dissipated by IC at the ambient temperature TA, is to be determined as (1) Ptot = (125 - TA) / Rth ja , where 125 – junction absolute maximum operating temperature, °С * Rth ja - thermal resistance “junction – ambient” (for IC without additional external heat sink), °С /W. Rating of this parameter in analog IC makes Rth ja = 70 °С /W (according to the data by “Siemens”). For IC with additional external heat sink (2) Rth ja = Rth jc + Rth ca , where Rth jc – IC thermal resistance “junction-case”, °С /W. Rating of this parameter in analog IC makes Rth jc = 3 °С /W (according to the data by “Siemens”). Thermal Rth jc and Rth ja of the IC is determined in the course of experimental development. Thermal resistance “case-ambient” Rth ca of the designed IC is determined by the design of heat sink and specified by IC consumer. Used heat sink, switching mode (consumed power) and ambient temperature have to ensure junction temperature nor more than TJ ≤ +125 °С. ** Effect time t ≤ 400 mc ELECTRICAL PARAMETERS Table 1 – Electrical parameters (UI=13.5V, -40 oC ≤ TJ ≤ 125 oC , unless otherwise specified) Parameter, unit Output voltage, V Maximum output current, mA Consumption current, mA Iq = II - IQ Residual voltage, mV Output voltage versus load current, mV Output voltage versus input voltage, mV Switching threshold voltage, V High reset voltage, V Low reset voltage, mV Circuit resistance, kOhm Switching threshold of “Reset” output into low level, V Switching threshold of “Reset” output into high level, V Charge current, mkA “Reset” output actuation time, mks Symbol Test conditions min 5 mA ≤ IQ ≤ 550 mA 6 V ≤ UI ≤ 26 V IQ ≤ 300 mA 26 V ≤ UI ≤ 36 V UQ = 0 V IQ = 5 mA UQ IQ max Iq IQ = 550 mA IQ = 550 mA; UI = 5 V Udr IQ = 550 mA ∆UQ(I) 5mA ≤ IQ ≤ 550mA UI = 6 V ∆UQ(U) 6V≤ UI ≤ 26V IQ=5mA Reset oscillator parameters URT UROH UROL IR = 3 mA UQ = 4.4 В R Connection directly to Q UDRL UQ < URT UDU Id UD = 1.0 V tRR CD = 100 nF Overvoltage protection UI, OV – Target max 4.9 5.1 4.9 5.1 650 – – 1.5 – – 75 90 – – 700 50 – 25 4.5 4.5 – 4.8 – 400 18 0.2 46 0.8 1.4 2.3 8 – 25 3 Switching voltage, V 42 46 Notes 1 Measurement of electrical parameters is carried out with connection of input capacitors CI = 1000 mkF, С2 = 470 nF and output capacitor CQ = 22 mkF. 2 Parameters specified in Table 1 are guaranteed for the constant junction temperature Tj. Measurement of parameters should be conducted by means of pulse technique. 4 ILE4270G IC CONNECTION CIRCUIT WHEN TESTING ELECTRICAL PARAMETERS IQ II 1000 mkF 5 1 ILE 4270G 22mkF 470nF 2 4 UI IR 3 ID IGND UR UQ UD CD IC ILE4270G APPLICATION BLOCK DIAGRAM II 5 1 Вход Выход 5 В 470 нФ 22 мкФ ILE 4270G Сброс 2 4 3 100 нФ 5 ILE4270G TIMING DIAGRAM OF IC LE4270G FUNCTION 6