TS4266G Preliminary 150mA Ultra Low Drop Out Voltage Regulator with Inhibit Pin assignment: 1. Input 2. Inhibit 3. Output 4. Ground 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 Ordering Information Fixed output voltage 5V Part No. Output voltage tolerance +/-3 % TS4266GCW450 150mA current capability Operating Temp. o -40 ~ 150 C SOT-223-4L Pin Definition and Function 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 Pin Symbol 1 Input Function Block to ground directly on IC with ceramic capacitor 2 Inhibit Inhibit input, high level turn IC on 3 Output Block to ground with 10uF capacitor, ESR < 4Ω 4 Ground Ground Block Diagram TS4266G Preliminary Package 1-1 2004/12 rev. A Absolute Maximum Rating Parameter Symbol Values Unit Input Supply Voltage Vin -42 ~ 45 V Inhibit Supply Voltage Vinhibit -42 ~ 45 V Operating Input Voltage Vin(opr) 5.5 ~ 45 V Vout -1 ~ 32 V PD Internally Limited W IGND 50 mA TJ -40 ~ +150 o C TSTG -50 ~ +150 o C Symbol Values Output Voltage Power Dissipation Ground Current Operating Junction Temperature Range Storage Temperature Range Thermal Performance Parameter Junction to Ambient RΘja 81 Junction to Case RΘjc 18 Unit o C/W Electrical Characteristics Vin = 13.5V, Vinhibit= 5V, -40 ≤ Tj ≤ +150, unless otherwise specified. Parameter Conditions Min Typ Max Unit Output Voltage 6V ≤ Vin ≤ 21V, 5mA ≤ Io ≤ 100mA 4.85 5.0 5.15 V Output Voltage 6V ≤ Vin ≤ 16V, 5mA ≤ Io ≤ 50mA 4.90 5.0 5.10 V 150 -- -- mA Output Current Limited Line Regulation 6V ≤ Vin ≤ 28V, Io=1mA -- 15 30 mV Load Regulation 1mA ≤ Io ≤ 100mA, Vin= 6V -- 50 90 mV Dropout Voltage (note 1) Io=100mA -- 0.25 0.5 V Current Consumption Vinhibit= 0V, Tj≤100 oC -- 0 1 (Iq= Iin – Iout) Io= 100uA -- 40 70 uA Io= 50mA -- 1.7 4 mA f = 100Hz, Vr= 0.5Vp-p -- 68 -- dB Inhibit ON Voltage 3.5 -- -- V Inhibit OFF Voltage -- -- 0.8 V Power Supply Ripple Rejection Inhibit Inhibit Current Vinhibit= 5V -- 4 8 uA Pull Down Resistor See Inhibit Current -- 1.0 -- MΩ 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. 1Ω 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 ≤ 4Ω 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 C J K D F G E TS4266G Preliminary 4-4 G H 0.835 6.700 1.035 7.300 0.032 0.263 0.041 0.287 I J K 0.250 10° 1.550 0.355 16° 1.800 0.010 10° 0.061 0.014 16° 0.071 DIM I H A B C D E F 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 2004/12 rev. A