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| NJM2880 LOW DROPOUT VOLTAGE REGULATOR GENERAL DESCRIPTION The NJM2880 is a low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. FEATURES High Ripple Rejection 70dB typ. (f=1kHz) Output Noise Voltage Vno=30uVrms (Cp=0.01uF) Output capacitor with 1.0uF ceramic capacitor Output Current IO(max.)=300mA High Precision Output VO1.0% Low Dropout Voltage 0.10V typ. (IO=100mA) ON / OFF Control (Active High) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline SOT-89 (5pin) PIN CONFIGURATION PIN FUNCTION 1. CONTROL (Active High) 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN PACKAGE OUTLINE NJM2880U NJM2880U EQUIVALENT CIRCUIT OUTPUT VOLTAGE RANK LIST Device Name NJM2880U21 NJM2880U25 NJM2880U26 NJM2880U27 NJM2880U28 NJM2880U285 NJM2880U03 VOUT 2.1V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V Device Name NJM2880U33 NJM2880U38 NJM2880U05 VOUT 3.3V 3.8V 5.0V Ver.2003-07-18 -1- NJM2880 ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Control Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL VIN VCONT PD Topr Tstg RATINGS +14 +14 (note 1) 350 -40 to +85 -40 to +125 (Ta=25C) UNIT V V mW C C (note 1) When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. ELECTRICAL CHARACTERISTICS PARAMETER Output Voltage Quiescent Current Quiescent Current at Control OFF Output Current Line Regulation Load Regulation Dropout Voltage Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage Control Voltage for ON-state Control Voltage for OFF-state VO IQ (VIN=VO+1V, CO=1.0uF : VO2.7V(CO=2.2uF : VO2.6V), CP=0.01uF, Ta=25C) TEST CONDITION IO=30mA IO=0mA, expect ICONT VCONT=0V VO-0.3V VIN=VO+1V to VO+6V, IO=30mA IO=0 to 300mA IO=100mA ein=200mVrms, f=1kHz, IO=10mA VO=3V Version Ta=0 to 85C, IO=10mA f=10Hz to 80kHz, IO=10mA VO=3V Version MIN. -1.0% 300 1.6 TYP. 120 400 0.10 70 50 30 MAX. +1.0% 180 100 0.10 0.03 0.18 0.6 UNIT V uA nA mA %/V % / mA V dB ppm / C uVrms V V SYMBOL IQ(OFF) IO VO / VIN VO / IO VI-O RR VO / Ta VNO VCONT(ON) VCONT(OFF) (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. TEST CIRCUIT -2- Ver.2003-07-18 NJM2880 TYPICAL APPLICATION 1 In the case where ON / OFF Control is not required : 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". 2 In use of ON / OFF CONTROL : State of control terminal : "H" output is enabled. "L" or "open" output is disabled. *Noise bypass Capacitance Cp Noise bypass Capacitance Cp reduces noise generated by band-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. Ver.2003-07-18 -3- NJM2880 TYPICAL CHARACTERISTICS NJM2880_3.0V Output Voltage vs. Input Vaoltage NJM2880_3.0V Output Voltage vs. Output Current NJM2880_3.0V Ground Pin Current vs. Output Current NJM2880_3.0V Dropout Voltage vs. Output Current NJM2880_3.0V Control Current vs. Control Voltage NJM2880_3.0V Output Voltage vs. Control Voltage -4- Ver.2003-07-18 NJM2880 TYPICAL CHARACTERISTICS NJM2880_3.0V Output Noise Voltage vs. Noise bypass Capacitor NJM2880_3.0V Output Noise Voltage vs. Output Current NJM2880_3.0V Ripple Rejection vs. Frequency NJM2880_3.0V Ripple Rejection vs. Output Current NJM2880_3.0V Equivalent Serise Resistance vs. Output Current Ver.2003-07-18 -5- NJM2880 TYPICAL CHARACTERISTICS NJM2880_3.0V Dropout Voltage vs. Temperature NJM2880_3.0V Control Voltage vs. Temperature NJM2880_3.0V Output Voltage vs. Temperature NJM2880_3.0V Quiescent Current vs. Temperature [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -6- Ver.2003-07-18 |
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