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| TS4266G Pin assignment: 1. Input 2. Inhibit 3. Output 4. Ground Preliminary 150mA Ultra Low Drop Out Voltage Regulator with Inhibit High Input Voltage up to 45V Low Dropout Voltage 0.5V (max) Low Power Consumption 40uA (typ) General Description TS4266G is a 5V low-drop fixed-voltage regulator in an SOT-223-4L package. It can be switched ON and OFF by the Inhibit pin. It is functional and pin compatible to the TS4266, but with a reduced quiescent current of <1uA in OFF mode and 40uA in ON mode. The TS4266G is especially designed for all applications that require very low quiescent current in ON and OFF mode. It is designed to supply microprocessor systems under the sever condition of automotive applications and therefore it is equipped with additional protection against over load, short circuit and over temperature. TS4266G also can be used in other applications, where a stabilized voltage and the inhibit feature is required. The IC regulates an input voltage in the range of 5.5V < Vin < 45V to Vout(rated) = 5.0V. The maximum output current is more than 150mA. This IC is regulated at the inhibit pin pull high level voltage. Features Fixed output voltage 5V Output voltage tolerance +/-3 % 150mA current capability Ultra low drop out voltage Very low current consumption 40uA (typ) Over temperature protection Short-circuit proof Reverse polarity proof Wide temperature range Suitable for use in automotive electronics Inhibit control Ordering Information Part No. TS4266GCW450 Operating Temp. -40 ~ 150 C o Package SOT-223-4L Pin Definition and Function Pin 1 2 3 4 Symbol Input Inhibit Output Ground Function Block to ground directly on IC with ceramic capacitor Inhibit input, high level turn IC on Block to ground with 10uF capacitor, ESR < 4 Ground Block Diagram TS4266G Preliminary 1-1 2004/12 rev. A Absolute Maximum Rating Parameter Input Supply Voltage Inhibit Supply Voltage Operating Input Voltage Output Voltage Power Dissipation Ground Current Operating Junction Temperature Range Storage Temperature Range Symbol Vin Vinhibit Vin(opr) Vout PD IGND TJ TSTG Values -42 ~ 45 -42 ~ 45 5.5 ~ 45 -1 ~ 32 Internally Limited 50 -40 ~ +150 -50 ~ +150 Unit V V V V W mA o o C C Thermal Performance Parameter Junction to Ambient Junction to Case Symbol Rja Rjc Values 81 18 Unit o C/W Electrical Characteristics Vin = 13.5V, Vinhibit= 5V, -40 Tj +150, unless otherwise specified. Parameter Output Voltage Output Voltage Output Current Limited Line Regulation Load Regulation Dropout Voltage (note 1) Current Consumption (Iq= Iin - Iout) Conditions 6V Vin 21V, 5mA Io 100mA 6V Vin 16V, 5mA Io 50mA Min 4.85 4.90 150 Typ 5.0 5.0 -15 50 0.25 0 40 1.7 68 Max 5.15 5.10 -30 90 0.5 1 70 4 -- Unit V V mA mV mV V 6V Vin 28V, Io=1mA 1mA Io 100mA, Vin= 6V Io=100mA Vinhibit= 0V, Tj100 oC Io= 100uA Io= 50mA -------- uA mA dB Power Supply Ripple Rejection f = 100Hz, Vr= 0.5Vp-p Inhibit Inhibit ON Voltage Inhibit OFF Voltage Inhibit Current Pull Down Resistor Vinhibit= 5V See Inhibit Current 3.5 -----4 1.0 -0.8 8 -V V uA M Note 1: Drop voltage = Vin - Vout (measured where Vout has dropped 100mV from the nominal value obtained at Vin= 13.5V) TS4266G Preliminary 2-2 2004/12 rev. A Typical Application Circuit Application Information Dimensioning Information on External Components The input capacitor Cin is necessary for compensating line influences (100nF ceramic capacitor recommended). Using a resistor of approx. 1 in series with Cin, the oscillating of input inductivity and input capacitance can be clamped. In the application circuit shown, an additional electrolytic input capacitor of 470uF is added in order to buffer supply line influences. This capacitor is recommended, if the device is sourced via long supply lines of several meters. The output capacitor Cout is necessary for the stability of the regulating circuit. Stability is guaranteed at values Cout 10uF and an ESR 4 within the operating temperature range. Circuit Description The control amplifier compares a reference voltage of 2.5V typical, the regulation loop controls the output to achieve an output voltage of 5V with an accuracy of +/-2% at an input voltage up to 45V. The minimum required input voltage is Vout + Vdrop. The TS4266G can supply up to 150mA. However for protection reasons at high input voltage above 25V, the maximum output current is reduced (SOA protection). The IC is additionally protected against overload, over temperature and reverse polarity TS4266G Preliminary 3-3 2004/12 rev. A SOT-223-4L Mechanical Drawing A B I DIM A B C D E F G H I J K H C J K F G E D SOT-223-4L DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 6.350 6.850 0.250 0.270 2.900 3.100 0.114 0.122 3.450 3.750 0.136 0.148 0.595 0.635 0.023 0.025 4.550 4.650 0.179 0.183 2.250 2.350 0.088 0.093 0.835 6.700 0.250 10 1.550 1.035 7.300 0.355 16 1.800 0.032 0.263 0.010 10 0.061 0.041 0.287 0.014 16 0.071 TS4266G Preliminary 4-4 2004/12 rev. A |
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