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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-263-5-1 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 * Adjustable reset time
1
ILE4270G
ILE4270G IC BLOCK DIAGRAM
Temperature sensor
Transistor saturation protection and control circuit
1
Control amplifier Adjustment Reference voltage source Buffer
5 Output
+ -
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
o
Function Input Reset oscillator output Common Output of reset signal delay Output
o
specified)
TYPICAL ELECTRICAL CHARACTERISTICS (UI =13.5V, -40 C TJ 125 C, unless otherwise
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 ABSOLUTE MAXIMUM RATINGS Parameter Die temperature, J Storage temperature, stg Input voltage, UI Input voltage, UI Input current, II Output voltage, UQ, Output current, IQ 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)
Parameter, unit Switching delay time, mc Low reset voltage, mV
Symbol td UROL
Unit C C A A / /
Limit ratings min max -40 125 UQ + 0.7 46 4.9 0 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*
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, * Rth ja - thermal resistance "junction - ambient" (for IC without additional external heat sink), /W. Rating of this parameter in analog IC makes Rth ja = 70 /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", /W. Rating of this parameter in analog IC makes Rth jc = 3 /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 . ** Effect time t 400 mc
ELECTRICAL PARAMETERS Parameter, unit
Table 1 - Electrical parameters (UI=13.5V, -40 oC TJ 125 oC , unless otherwise specified)
Symbol UQ 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 4.9 4.9 650 - - - - - - 4.5 4.5 - 18 0.2 1.4 8 -
Target max 5.1 5.1 - 1.5 75 90 700 50 25 4.8 - 400 46 0.8 2.3 25 3
Output voltage, V
Maximum output current, mA Consumption current, mA Iq = II - IQ
IQ max 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
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 R Connection directly to Q UDRL UQ < URT UDU Id UD = 1.0 V tRR CD = 100 nF Overvoltage protection UI, OV -
Switching voltage, V 42 46 Notes 1 Measurement of electrical parameters is carried out with connection of input capacitors CI = 1000 mkF, 2 = 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
II 1000 mkF
IQ 1 ILE 4270G 470nF 5 22mkF
2 4 UI UD CD ID 3 IGND
IR
UR
UQ
IC ILE4270G APPLICATION BLOCK DIAGRAM
II 470
1
5
5
ILE 4270G 2 4 3 100
22
5
ILE4270G
TIMING DIAGRAM OF IC LE4270G FUNCTION
6

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