TS4264G Preliminary 150mA Ultra Low Drop Out Voltage Regulator High Input Voltage up to 45V Pin assignment: 1. Input 2. Ground 3. Output Low Dropout Voltage 0.5V (max) Low Power Consumption 40uA (typ) General Description TS4264G 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 Ordering Information Fixed output voltage 5V Part No. Output voltage tolerance +/-2 % TS4264GCW50 Operating Temp. o -40 ~ 150 C Package SOT-223 150mA current capability Ultra low drop out voltage Pin Definition and Function Very low current consumption 40uA (typ) Over temperature protection Short-circuit proof Pin Symbol 1 Input Function Block to ground directly on IC with ceramic capacitor Reverse polarity proof Wide temperature range Suitable for use in automotive electronics 2 Ground Ground 3 Output Block to ground with 10uF capacitor, ESR < 4Ω Block Diagram TS4264G Preliminary 1-1 2004/01 rev. A Absolute Maximum Rating Parameter Symbol Values Unit Vin -42 ~ 45 V 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 Junction to Ambient RΘja 81 Junction to Case RΘjc 17 Input Supply Voltage Operating Input Voltage Output Voltage Power Dissipation Ground Current Operating Junction Temperature Range Storage Temperature Range Thermal Performance Parameter Unit o C/W Electrical Characteristics Vin = 13.5V, -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= 13.5V -- 50 90 mV Dropout Voltage (note 1) Io=100mA -- 0.25 0.5 V Current Consumption Io= 100uA -- 40 70 uA (Iq= Iin – Iout) Io= 50mA -- 1.7 4 mA Temperature Stability Io=10mA -- 0.5 -- % Power Supply Ripple Rejection f = 100Hz, Vr= 0.5Vp-p -- 68 -- dB Note 1: Drop voltage = Vin – Vout (measured where Vout has dropped 100mV from the nominal value obtained at Vin= 13.5V) TS4264G Preliminary 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. 1Ω 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 ≤ 4Ω 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 TS4264G Preliminary 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. TS4264G Preliminary 4-4 2004/01 rev. A SOT-223 Mechanical Drawing A B C J K D F G E TS4264G Preliminary 5-5 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 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 2004/01 rev. A