WEITRON WT78LXXM Positive Voltage Regulator P b Lead(Pb)-Free 1 Features: SOP-8 * Maximum Output current IO: 0.1 A * Output voltage VO: 5V~8V * Continuous total dissipation: PD: 0.625 W (Ta = 25˚C ) Typical Application Vout Vin WT78LXX Gnd Cin 0.33µF Cout 0.1µF Absolute Maximum Ratings Ratings Unit Input Voltage 25 V Output Current 100 mA Power Dissipation 625 mW Operating Junction Temperature Range -20 ~ +120 °C Storage temperature range -65 ~ +150 °C Parameter WEITRON hpp://www.weitron.com.tw 1/4 05-Nov-2010 WT78LXXM Electrical Characteristics at Specified Virtual Junction Temperature WT78L05 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=10V, Cin=0.33µF, CO=0.1µF unless otherwise specified) Parameter Output Voltage Tj=25°C Load Regulation IO=1~100mA, Tj=25°C IO=1~40mA, Tj=25°C Line Regulation 7V<=Vin<=20V 8V<=Vin<=20V, j=25°C Quiescent Current T j=25°C T j=125°C Quiescent Current Change 8V<=Vin<=20V 1mA<=I O <=40mA Output Noise Voltage 10Hz<=f<=100KHz, T =25°C Ripple Rejection 8V<=Vin<=18V, j=25°C Dropout Voltage T =25°C Symbol Min Typ Max Unit VO 4.8 5.0 5.2 V ∆VO - 11 5.0 60 30 mV ∆VO - 55 45 150 100 mV IQ - 3.8 - 6.0 5.5 mA ∆I Q - - 1.5 0.1 mA Vn - 40 - µV RR 41 49 - dB VD - 1.7 - V WT78L08 (Refer to the test circuits, Tj=0~125°C, IO=40mA, Vin=14V, Cin=0.33µF, CO=0.1µF unless otherwise specified) Parameter Output Voltage Tj=25°C Load Regulation IO=1~100mA, Tj=25°C IO=1~40mA, Tj=25°C Line Regulation 10.5V<=V in<=23V, j=25°C 11V<=Vin<=20V, j=25°C Quiescent Current T j=25°C T j=125°C Quiescent Current Change 8V<=Vin<=20V 1mA<=I O <=40mA Output Noise Voltage 10Hz<=f<=100KHz, T =25°C Ripple Rejection 8V<=Vin<=18V, j=25°C Dropout Voltage T =25°C WEITRON http://www.weitron.com.tw Symbol Min Typ Max Unit VO 7.6 8.0 8.4 V ∆VO - 15 8 80 40 mV ∆VO - 10 8 175 125 mV IQ - 3.8 - 6.0 5.5 mA ∆I Q - - 1.5 0.1 mA Vn - 40 - µV RR 41 49 - dB VD - 1.7 - V 2/4 05-Nov-2010 WT78LXXM Typical Performance Characteristics 2.5 VI-VO,INPUT/OUTPUT DIFFERENTIAL VOLTAGE(V) VO,OUTPUT VOLTAGE(V) 8.0 WT78L05 VOUT=5.0V TJ=25℃ 6.0 Io=1.0mA 4.0 Io=40mA 2.0 Io=100mA IO=70mA 2.0 1.5 Io=40mA 1.0 Io=1.0mA 0.5 Dropout of Regulation is defined as when Vo=2% of Vo 0 4.0 2.0 0 6.0 8.0 0 0 10 VI,INPUT VOLTAGE(V) Dropout Characteristics 5.0 IIB,INPUT BIAS CURRENT(mA) VI-VO,INPUT/OUTPUT DIFFERENTIAL VOLTAGE(V) IO=70mA 2.0 1.5 Io=40mA Io=1.0mA 0.5 Dropout of Regulation is defined as when Vo=2% of Vo 0 0 25 50 75 100 TJ,JUNCTION TEMPERATURE(℃) 125 WEITRON 4.0 3.0 2.0 WT78L05 VOUT=5.0V IO=40mA TJ=25℃ 1.0 0 0 5.0 10 15 20 25 30 35 40 VI,INPUT VOLTAGE(V) Input Bias Current versus Ambient Temperature http://www.weitron.com.tw 125 Dropout Voltage versus Junction Temperature 2.5 1.0 25 50 75 100 TJ,JUNCTION TEMPERATURE(℃) Input Bias Current versus Input Voltage 3/4 05-Nov-2010 WT78LXXM SOP-8 PACKAGE OUTLINE DIMENSIONS(Unit:mm) A SOP-8 C B J H M G F L K E WEITRON http://www.weitron.com.tw 4/4 D Dim A B C D E F M H L J K G Min Max 6.20 5.80 4.80 5.00 4.00 3.80 0º 8º 0.90 0.40 0.25 0.19 0.10 0.25 0.35 0.49 1.35 1.75 0.375 REF 45º 1.27 TYP 05-Nov-2010