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| TS4264 150mA Ultra Low Drop Out Voltage Regulator Pin assignment: 1. Input 2. Ground 3. Output High Input Voltage up to 45V Low Dropout Voltage 0.5V max. General Description TS4264 is a 5V low-drop fixed-voltage regulator in an SOT-223 package. 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 designed with short circuit-proof and features temperature protection that disables the circuit at over-temperature. Features Fixed output voltage 5V Output voltage tolerance +/-2 % 150mA current capability Ultra low drop out voltage Very low current consumption Over temperature protection Short-circuit proof Reverse polarity proof Wide temperature range Suitable for use in automotive electronics Ordering Information Part No. TS4264CW50 Operating Temp. -40 ~ 150 C o Package SOT-223 Pin Definition and Function Pin 1 2 3 Symbol Input Function Block to ground directly on IC with ceramic capacitor Ground Ground Output Block to ground with 10uF capacitor, ESR < 10 Block Diagram TS4264 1-1 2004/01 rev. A Absolute Maximum Rating Parameter Input Supply Voltage Operating Input Voltage Output Voltage Power Dissipation Ground Current Operating Junction Temperature Range Storage Temperature Range Symbol Vin Vin(opr) Vout PD IGND TJ TSTG Values -42 ~ 45 5.5 ~ 45 -1 ~ 16 Internally Limited 50 -40 ~ +150 -50 ~ +150 Unit V V V W mA o o C C Thermal Performance Parameter Junction to Ambient Junction to Case Symbol Rja Rjc Values 80 18 Unit o C/W Electrical Characteristics Vin = 13.5V, -40 Tj +150, unless otherwise specified. Parameter Output Voltage Output Current Limited Line Regulation Load Regulation Dropout Voltage (note 1) Current Consumption (Iq= Iin - Iout) Temperature Stability Power Supply Ripple Rejection Conditions 6V Vin 28V, 5mA Io 100mA Min 4.9 150 Typ 5.0 -15 -0.25 -10 0.5 54 Max 5.1 -30 90 0.5 400 15 --- Unit V mA mV mV V uA mA % dB 6V Vin 28V, Io=5mA 5mA Io 100mA, Vin= 6V Io=100mA Io= 1mA Io= 100mA Io=10mA f = 100Hz, Vr= 0.5Vp-p -------- Note 1: Drop voltage = Vin - Vout (measured where Vout has dropped 100mV from the nominal value obtained at Vin= 13.5V) TS4264 2-2 2004/01 rev. A Typical Application Circuit Application Information Dimensioning Information on External Components The input capacitor Cin is necessary for compensating line influences. Using a resistor of approx. 1 in series with Cin, the oscillating of input inductivity and input capacitance can be clamped. The output capacitor Cout is necessary for the stability of the regulating circuit. Stability is guaranteed at values Cout 10uF and an ESR 10 within the operating temperature range. Circuit Description The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control, working as a function of load current, prevents any over-saturation of the power element. The IC is additionally protected against overload, over temperature and reverse polarity TS4264 3-3 2004/01 rev. A Electrical Characteristics Curve Figure 1: dropout voltage vs output current Figure 2: output current vs input voltage Figure 3: consumption vs output current Figure 4: consumption vs output current Figure 5: consumption vs input voltage Figure 6: output voltage vs temp. TS4264 4-4 2004/01 rev. A SOT-223 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 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 TS4264 5-5 2004/01 rev. A |
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