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| NJM2894 3OUTPUT LOW DROPOUT VOLTAGE REGULATOR GENRAL DESCRIPTION The NJM2894 is a 3ch low dropout voltage regulator with ON/OFF Control in TVSP-8 package. It is suitable for camcorder, IC decoder, camera and other portable items. FEATURES High Ripple Rejection 75dB typ. at f=1kHz Low Noise 45Vrms typ. Output capacitor with 1.0F ceramic capacitor at Vo2.7V Output Current Io(max.)=ch1=150mA ,ch2,3=80mA High Precision Output 1.0% Low Dropout Voltage 0.1V typ. at Io=60mA ON/OFF Control Internal Thermal Overload Protection Internal Short Circuit Current Limit Bipolar Technology Package Outline TVSP-8 PIN CONFIGURATION 1 2 3 4 8 7 6 5 Preliminary PACKAGE OUTLINE NJM2894RB1 NJM2894RB1 EQUIVALENT CIRCUIT VIN CONTROL1 PIN FUNCTION 1. VOUT1 5. CONTROL3 2. VOUT2 6. CONTROL2 3. VOUT3 7. CONTROL1 4. GND 8. VIN VOUT1 Thermal Protection Bandgap Reference VOUT2 CONTROL2 VOUT3 CONTROL3 GND Ver.2003-03-11 -1- NJM2894 Preliminary ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg RATINGS +14 +14(note1) 320 -40 to +85 -40 to+125 (Ta=25C) UNIT V V mW C C (note1)When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. ERECRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=0.1F, Co=1.0F: Vo2.7V (Co=2.2F: Vo2.6V), Ta=25C) PARAMETER SYMBOL TEST CONDITION Output Voltage Vo Io=30mA Quiescent Current1 IQ1 VCONT1= VIN, VCONT2= VCONT3= 0V *1ch ON Io=0mA, expect Icont Quiescent Current2 IQ2 VCONT1= VCONT2= VIN, VCONT3= 0V *2ch ON Io=0mA, expect Icont Quiescent Current3 IQ3 VCONT1= VCONT2= VCONT3= VIN Io=0mA, expect Icont Quiescent Current at IQ(OFF) VCONT=0V Control OFF Output Current 1 Io1 Ch1 : Vo-0.3V Output Current 2 Io2 Ch2,3 : Vo-0.3V Line Regulation Vo/VIN VIN=Vo+1V to Vo+6V, Io=30mA Load Regulation 1 Vo/Io1 Ch1 : Io=0 to 100mA Load Regulation 2 Vo/Io2 Ch2,3 : Io=0 to 60mA Dropout Voltage 1 VI-O1 Ch1 : Io=60mA Dropout Voltage 2 VI-O2 Ch2,3 : Io=40mA Ripple Rejection RR ein=200mVrms,f=1kHz,Io=10mA, Vo=3V Average Temperature Coefficient of Output Vo/Ta Ta=0 to 85C, Io=10mA Voltage Output Noise Voltage VNO f=10Hz to 80kHz, Io=10mA, Vo=3V Control Voltage for VCONT(ON) ON-state Control Voltage for VCONT(OFF) OFF-state MIN. -1.0% 150 80 1.6 - TYP. 140 240 340 200 100 0.10 0.10 75 50 45 - MAX. +1.0% 220 370 520 100 0.10 0.03 0.03 0.18 0.18 0.6 UNIT V A A A nA mA mA %/V %/mA %/mA V V dB ppm/C Vrms V V (note2) Please confirm the specification separately because some parameters depend on output voltage. OUTPUT VOLTAGE RANK LIST Device Name CH1 NJM2893RB1-CCC 2.1V NJM2893RB1-LLL 3.0V NJM2893RB1-YLC 5.0V VOUT CH2 2.1V 3.0V 3.0V CH3 2.1V 3.0V 2.1V -2- Ver.2003-03-11 NJM2894 Preliminary TEST CIRCUIT A VIN IIN VIN VOUT 1 VOUT1 IOUT 1 V 1.0F or 2.2F(Vo2.6V) 0.1F NJM2894 A ICONT CONTROL1 VOUT2 VOUT2 IOUT2 V 1.0F or 2.2F(Vo2.6V) V VCONT1 A V VCONT2 ICONT2 CONTROL2 VOUT3 VOUT3 IOUT 3 V 1.0F or 2.2F(Vo2.6V) A V VCONT3 ICONT3 CONTROL GND Ver.2003-03-11 -3- NJM2894 Preliminary TYPICAL APPLICATION (1) In the case where ON/OFF Control is not required: VIN 0.1F VIN VOUT1 VOUT1 1.0F or 2.2F(Vo2.6V) NJM2894 R1 (0300k) CONTROL VOUT2 VOUT2 1.0F or 2.2F(Vo2.6V) R2 (0300k) CONTROL VOUT3 R3 (0300k) VOUT3 1.0F or 2.2F(Vo2.6V) CONTROL GND Connect control terminal to VIN terminal In case a resistance "R" is used, the quiescent current will be decreased. However, the but minimum operating voltage will be increase as well. Please refer to a figure of Output Voltage vs. Control Voltage. -4- Ver.2003-03-11 NJM2894 (2)In use of ON/OFF Control: VIN VIN VOUT1 VOUT1 1.0F or 2.2F(Vo2.6V) 0.1F R1 R2 R3 NJM2894 CONTROL1 VOUT2 VOUT2 1.0F or 2.2F(Vo2.6V) CONTROL2 VOUT3 VOUT3 1.0F or 2.2F(Vo2.6V) CONTROL3 GND In case the control terminal is "H", the output is enabled. The control terminal is "L" or "open", the output is disabled. Ver.2003-03-11 -5- NJM2894 [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.2003-03-11 |
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