UTCLD3870 UTC | Alldatasheet

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UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R102-027,B LOW DROPOUT VOLTAGE REGULATOR

DESCRIPTION

The UTC LD3870 is low dropout voltage regulator designed for cellular phone application.

FEATURES

  • High Ripple Rejection: 56dB›RR(DC<f<60kHz) 66dB typ. (f=100Hz) 60dB typ. (f=1kHz) * Output Noise Voltage: Vno=30ȘV , Cp=0.01ȰF * Output Current: Io(max)=150mA * High Precision Output: Vo2% * Low Dropout Voltage: ¶Vl-o=0.12V typ. (Io=60mA,Voœ1.8V) * Input Voltage range: +2~+14V(Vo=1.5V Version) * ON/OFF Control: Active High * Output capacitor with 4.7uF ceramic capacitor * Internal Short Circuit Current Limit * Internal Thermal Overload Protection SOT-25 1:CONTROL(Active High) 2:GND 3:NOISE BYPASS 4:V OUT 5 : VIN MARKING INFORMATION PART NUMBER VOLTAGE VOLATGE CODE PART NUMBER VOLTAGE VOLATGE CODE MARKING LD3870-1.5V 1.5V 15 LD3870-3.1V 3.1V 31 LD3870-1.8V 1.8V 18 LD370-3.2V 3.2V 32 LD3870-1.9V 1.9V 19 LD3870-3.3V 3.3V 33 LD3870-2.0V 2.0V 20 LD3870-3.4V 3.4V 34 LD3870-2.1V 2.1V 21 LD3870-3.5V 3.5V 35 LD3870-2.3V 2.3V 23 LD3870-3.6V 3.6V 36 LD3870-2.4V 2.4V 24 LD3870-3.8V 3.8V 38 LD3870-2.5V 2.5V 25 LD3870-4.0V 4.0V 40 LD3870-2.6V 2.6V 26 LD3870-4.5V 4.5V 45 LD3870-2.7V 2.7V 27 LD3870-4.6V 4.6V 46 LD3870-2.8V 2.8V 28 LD3870-4.7V 4.7V 47 LD3870-2.85V 2.85V 2J LD3870-4.8V 4.8V 48 LD3870-2.9V 2.9V 29 LD3870-5.0V 5.0V 50 LD3870-3.0V 3.0V 30 VOLTAGE CODE M B

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R102-027,B BLOCK DAGRAM VIN Cont GND Bandgap Reference Thermal Protection VOUT Noise Bypass ABSOLUTE MAXIMUM RATINGS (Ta=25¥) PARAMETER SYMBOL RATINGS UNIT Input Voltage V IN +14 V Control Voltage V CONT +14(Note 1) V Power Dissipation P D 200 mW Operating Temperature Topr -40 ~ +85 ¥ Storage Temperature Tstg -40 ~ +125 ¥ Note 1: When input voltage is less than +14V,the absolute maximum control voltage is equal to the input voltage. ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1DŽF, Co=4.7DŽF, Cp=0.01DŽF, Ta=25¥) PARAMETER SYMBOL TEST CONDITONS MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -2% +2% V Quiescent Current I Q Io=0mA, expect lcont 200 300 DŽA Quiescent Current At Control OFF IQ(OFF) VCONT=0V 100 nA Output Current Io Vo-0.3V 150 200 mA Line Regulation ¶Vo/¶VIN VIN=Vo+1V ~ Vo+6V, Io=30mA 0.10 %/V Load Regulation ¶Vo/¶Io Io=0 ~ 100mA 0.03 %/mA Dropout Voltage ¶VI-o Io=60mA 0.12 0.2 V Ripple Rejection RR ein=200mVrms, f=1kHz, Io=10mA, VIN=Vo+2V, Vo=3V Version 60 dB Average Temperature Coefficient of Output Voltage ¶Vo/¶Ta Ta=0~85¥, Io=10mA, Vo=3V Version 0.2 mV/¥ Output Noise Voltage VNO f=10Hz ~ 80kHz, Io=10mA, Vo=3V Version 30 DŽVrms Control Voltage for ON-state V CONT(ON) 1.6 V Control Voltage for OFF-state V CONT(OFF) 0.6 V Note 2: The above specification is a common specification for all output voltages.Therefore, it may be different from the individual specification for a specific output voltage.

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R102-027,B

ELECTRICAL CHARACTERISTICS

PARAMETER SYMBOL TEST CONDITONS MIN. TYP. MAX. UNIT Output Voltage Vo Io=30mA -2% +2% V Quiescent Current I Q Io=0mA, expect Icont 200 300 DŽA Quiescent Curretn At Control OFF IQ(OFF) VCONT=0V 100 nA Output Curretn Io Vo-0.3V 150 200 mA Line Regulation ¶Vo/¶VIN VIN=Vo+1V ~ Vo+6V, Io=30mA 0.10 %/V Load Regulation ¶Vo/¶Io Io=0 ~ 100mA 0.03 %/mA Ripple Rejection RR ein=200mVrms, f=1kHz, Io=10mA, VIN=Vo+2V 64 dB Average Temperature Coefficient of Output Voltage ¶Vo/¶Ta Ta=0 ~ 85¥, Io=10mA 0.13 mV/¥ Output Noise Voltage V NO f=10Hz ~ 80kHz, Io=10mA 15 DŽVrms Control Voltage for ON-state V CONT(ON) 1.6 V Control Voltage for OFF-state V CONT(OFF) 0.6 V TEST CIRCUIT VIN VOUT CONTROL NOISE BYPASS GND A A V V IIN VIN VCONT ICONT IOUT VOUT (tantalum) 4.7 DŽF CP=0.01 DŽF 0.1 DŽF UTC LD3870 TYPICAL APPLICATON æ In case that ON/OFF Control is not required: VIN VOUT CONTROL NOISE BYPASS GND (ceramic or tantalum) (0~300kƸ R VOUT 0.1 DŽF Cp=0.01 DŽF 4.7 DŽF UTC LD3870

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R102-027,B Connect control terminal to VIN terminal The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating voltage. For further information, please refer to Figure ”Output Voltage vs. Control Voltage”. ç In use of ON/OFF CONTROL: VIN VOUT CONTROL NOISE BYPASS GND (ceramic or tantalum) R VOUTVIN UTC LD3870 4.7 DŽF Cp=0.01 DŽF 0.1 DŽF State of control terminal: * ”H” Æ Output is enables. * ”L”or “open” Æ Output is disabled. * Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by hand-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of 0.01uF greater to avoid the problem.

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R102-027,B TYPICAL CHARACTERISTICS 3.2 2.7 2.82.7 3.4 2.9 2.8 3.132.9 LD3870-3.0V Output Voltage vs.Input Voltage Outputput Voltage, Vo (V) 3.1 3.2 3.3 Input Voltage, VIN (V) @:Ta=25Ċ Co=4.7 DŽF(tantalum) Cp=0.01 DŽF Io=0A Io=30mA Io=100mA 3.5 500 300 2.5 150100 LD3870-3.0V Output Voltage vs.Output current Outputput Voltage, Vo (V) 200 250 Output current, Io (mA) 1.5 0.5 @:Ta=25Ċ VIN=4V CL=4.7 DŽF(tantalum) Cp=0.01 DŽF 500 150100 LD3870-3.0V Ground Pin Current vs.Output Current Ground Pin Current, I GND (mA)15 200 Output current, Io (mA) 0.2 0.3 0 500 0.15 150100 Dropout Voltage, dVI-0 (V) 0.25 200 Output current, Io (mA) LD3870-3.0V Output Voltage vs.Output current 0.1 0.05 0.50 1.51 Control Current, Icont (µA) 3.5 Control Voltage, Vcont (V) LD3870-3.0V Control Current vs. Control Voltage 32.524 3.5 0 0.503 2.5 1.51 LD3870-3.0V Output Voltage vs.Control Voltage Outputput Voltage, Vo (V) 2 2.5 Control Voltage, Vcont (V) 1.5 0.5 @:Ta=25Ċ VIN=4V CL=4.7 DŽF(tantalum) Cp=0.01 DŽF @:Ta=25Ċ CL=4.7 DŽF(tantalum) Cp=0.01 DŽF Rc=50kƸ Rc=0Ƹ Rc=100kƸ @:Ta=25Ċ VIN=4V CL=4.7 DŽF(tantalum) Cp=0.01 DŽF Io=30mA Rc=50kƸ Rc=0Ƹ Rc=100kƸ @: VIN=4V Ta=25 Ċ CL=4.7 DŽF Cp=0.01 DŽF Io=30mA

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R102-027,B 200 300 0 10p1p 150 1000p100p Output Noise Voltage, Vn (µVrms) 250 0.01u Noise Bypass Capacitor, Cp (F) LD3870-3.0V Output Noise Voltage vs.Noise Bypass Capacitor 100 0.1u 100 0 0.010.001 1 0.1 Output Noise Voltage, Vn (µVrms) Output Current, Io (mA) LD3870-3.0V Output Noise Voltage vs.Noise Output Current 100 10010 Ripple Rejection, RR (dB) 10K Frequency, f (Hz) LD3870-3.0V Ripple Rejection vs.Frequency 100K 0.010.001 0.1 Ripple Rejection, RR (dB) Output Current, Io (mA) LD3870-3.0V Ripple Rejection vs.Output Current 10 100 100 10µ10 100µ Equivalent Serise Resistance, ESR ( Ƹ) Output Current, Io (mA) LD3870-3.0V Equivalent Serise Resistance vs.Output Current 0.1 0.02 1m 10m CL=1DŽF(Ceramic) CL=4.7DŽF(Ceramic) @:Ta=25Ċ VIN=4V Io=10mA CL=2.2DŽF(Ceramic) CL=1DŽF(Ceramic) @:Ta=25Ċ VIN=4V Cp=0.01 DŽF @:Ta=25Ċ VIN=4V CL=1DŽF(Ceramic) Cp=0.01DŽF Oscillation Free 100m Io=30mA Io=0mA Io=10mA @:Ta=25Ċ VIN=4V ein=200mVrms CL=1 DŽF Cp=0.01DŽF f=10KHz f=1KHz @:Ta=25Ċ VIN=5V ein=200mVrms CL=1 DŽF Cp=0.01DŽF

UTC LD3870 LINEAR INTEGRATED CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 7 QW-R102-027,B 0.2 0.3 50-50 0.15 150100 Dropout Voltage, dV I-0 (V) 0.25 Temperature, Ta ( Ċ) LD3870-3.0V Dropout Voltage vs.Temperature 0.1 0.05 50-50 0.5 150100 LD3870-3.0V Control Voltage vs.Temperature Control Voltage, V CONT(OFF) (V) 1.5 3.5 2.5 LD3870-3.0V Output Voltage vs.Output current Outputput Voltage, Vo (V) 1.5 0.5 200 300 0 50-50 150 150100 Quiescent Current, I Q (µA) 250 LD3870-3.0V Quiescent Current vs.Temperature 100 Temperature, Ta ( Ċ) Temperature, Ta ( Ċ) Temperature, Ta ( Ċ) @:VIN=4V Output is open CL=4.7 DŽF(tantalum) Cp=0.01 DŽF @:VIN=4V Output is open CL=4.7 DŽF(tantalum) Cp=0.01 DŽF @: VIN=4V Io=30mA C J=4.7DŽF(tantalum) Cp=0.01 DŽF @:VIN=4V Output is open C J=4.7DŽF(tantalum) Cp=0.01 DŽF including lcont 50-50 150 1000 200 UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.