ILE4264 5V/100mA Low-Drop Fixed-Voltage Regulator (analog TLE4264G, Siemens) ILE4264G (analog TLE4264G, Siemens) – is a single-chip 5V/100mA low-drop fixed-voltage regulator implemented in a plastic P-SOT223-4-1 package as per Siemens specification. The circuit of 5V/100mA low-drop fixed-voltage regulator regulates fixed voltage of 5V with lowdrop voltage less than 0.5V at load current of 100mA. Applied in power sources of electronic equipment including automotive electronics. The circuit is protected against overload of either positive or negative polarity, internal limiting of maximum load current with temperature reset of output voltage Features: • • • • • • 5V output voltage tolerance ± 2% Low-drop voltage Very low current consumption Built-in overtemperature protection Protection against pins reverse polarity Junction temperature range from - 40 up to +125°С. Pin Definition Pin Symbol Catalogue description Function 1 UI Input voltage Input 2, 4 GND Ground Ground 3 UQ 5-V output voltage Output 1 ILE4264 ABSOLUTE MAXIMUM RATINGS Parameter Unit Operating values Absolute maximum values min max min max 150 150 42 Not limited internally Not limited internally 25* Junction temperature, ТJ Storage temperature, Тstg Input voltage, UI Input current, II O C C V А -40 5,5 - 125 45 Limited internally -40 -50 -42 - Current on “ground” (pin 2),IGND Output current (pin 3) mA А 15 - Limited internally 50 - Resistance junction-case, RthJC °С/Wt - 25* - O Resistance junction-air, RthJA °С/Wt 125* 125* Notes: 1 * - Rth ja - thermal resistance “junction-air” (for IC without additional external heat sink), ОС/Wt. The same parameter in analog IC is Rth ja = 125 ОС/Вт (by “Siemens” information data). Thermal resistance “junction-air” of this circuit is determined in the course of research & development work. For the circuit with additional external heat sink: Rth ja = Rth jc + Rth ca , (1) Where Rth jc – IC thermal resistance “junction-case”, ОС/Wt. . The same parameter in analog IC is Rth jc = 25 О С/Wt ((by “Siemens” information data). Thermal resistance “case-air” Rth ca in the designed IC is determined by heat sink structure and specified by IC consumer. Heat sink, switching “on” mode (power consumed) and ambient temperature should ensure junction temperature not more than TJ ≤ +125 ОС. 2 Absolute maximum power Ptot,Wt, dissipated by the IC at the ambient temperature TA , is determined as: Ptot = (125 - TA) / Rth ja , (2) where 125 – absolute maximum junction operation temperature, ОС 2 ILE4264 Typical electrical parameters (VI =13,5 V, TJ=25°С, unless specified otherwise) Parameter Supply voltage suppression, dB Symbol Test conditions Typ. Value SVR f = 100 Hz, UR = 0.5UPP, 54 Electrical parameters (VI=13.5V, -40 oC ≤ TJ ≤ 125 oC, unless specified otherwise) Parameter Standard Symbol Output voltage, V Output current, mA Consumption current, mA, Iq = II - IQ Drop voltage, V Output voltage versus load current, mV Output voltage versus input voltage, mV Test conditions 6V≤UI ≤28V 5mA≤IQ≤100mA UQ IQ Iq min max 4.9 5.1 120 IQ=1 mA 0,4 IQ=100 mA 15 UDr IQ=100 mA 0.5 ∆UQ(I) 5mA ≤ IO ≤ 100mA VI = 6 V 6V≤ UI ≤ 28V IQ=5mA 40 ∆UQ(U) 30 Notes: 1 The electrical parameters are measured when input capacitor CI = 1000 mkF and output capacitor CQ = 10 mkF are connected. Application circuit is in attachment A. IC block diagram is in attachment B. 2 The parameters indicated in table 1 are guaranteed at constant junction temperature Tj. The parameters should be measured using pulse equipment. 3 ILE4264 TYPICAL APPLICATION CIRCUIT OF ILE4264G Input CI 1000mkF 1 Output 3 CQ 10mkF ILA4264G 2,4 Input Saturation Control and Protection Circuit Temperature sensor 1 3 Buffer Adjustment Bandgap Reference Control amplifier 2,4 Ground Block diagram 4 Output