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NJM2893
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3OUTPUT LOW DROPOUT VOLTAGE REGULATOR
! GENERAL DESCRIPTION The NJM2893 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. (f=1kHz,Vo=3V Version) " Output Noise Voltage Vno=45µVrms typ. " Output capacitor with 1.0uF ceramic capacitor (Vo≥2.7V) " Output Current Io(max.)=100mA x3 " High Precision Output Vo±1.0% " Low Dropout Voltage 0.10V typ. (Io=60mA) " ON/OFF Control (Active High) " Internal Short Circuit Current Limit " Internal Thermal Overload Protection " Bipolar Technology " Package Outline TVSP-8 ! PIN CONFIGURATION ! PACKAGE OUTLINE
NJM2893RB1
8
7
6
5
PIN FUNCTION 1.VOUT1 2.VOUT2 3.VOUT3 4.GND 5.CONTROL3 6.CONTROL2 7.CONTROL1 8.VIN
1
2 3 4 NJM2893RB1
NJM2893
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! EQUIVALENT CIRCUIT
VIN CONTROL1
Bandgap Reference Thermal Protection
VOUT1
VOUT2 CONTROL2
VOUT3 CONTROL3
GND
NJM2893
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! OUTPUT VOLTAGE RANK LIST Device Name CH1 NJM2893RB1-CCC 2.1V NJM2893RB1-LLL 3.0V NJM2893RB1-YLC 5.0V ! ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg
Vout CH2 2.1V 3.0V 3.0V
CH3 2.1V 3.0V 2.1V
(Ta=25°C) RATINGS UNIT +14 V +14(*1) V 320 mW −40 to +85 °C −40 to +125 °C (*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=0.1µF, Co=1.0uF: Vo≥2.7V (Co=2.2uF: Vo≤2.6V), Ta=25°C)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Output Voltage Quiescent Current1 Quiescent Current2
Vo IQ1 IQ2
Quiescent Current3 Quiescent Current at Control OFF Output Current Line Regulation Load Regulation Dropout Voltage Ripple Rejection Average Temperature Coefficient of Output Voltage Output Noise Voltage
IQ3 IQ(OFF) Io ∆Vo/∆VIN ∆Vo/∆Io1 ∆VI−O1 RR ∆Vo/∆Ta VNO
Io=30mA VCONT1=VIN, VCONT2=VCONT3=0V *1ch ON Io=0mA, expect Icont VCONT1= VCONT2=VIN, VCONT3=0V *2ch ON Io=0mA, expect Icont VCONT1= VCONT2=VCONT3=VIN Io=0mA, expect Icont VCONT=0V
-1.0% − − − −
− 150 270 390 − 200 − − 0.10 75 ±50 45 − −
+1.0% 220 400 580 100 0.10 0.03 0.18 − − − − 0.6
V µA µA µA nA mA %/V %/mA V dB ppm/°C µVrms V V
150 Vo−0.3V VIN=Vo+1V to Vo+6V, Io=30mA − Io=0 to 100mA − Io=60mA − ein=200mVrms,f=1kHz, Io=10mA, − Vo=3V Version Ta=0 to 85°C, Io=10mA f=10Hz to 80kHz, Io=10mA, Vo=3V Version − − 1.6 −
Control Voltage for ON-state VCONT(ON) Control Voltage for OFF-state VCONT(OFF)
(*2) VIN =Vo+1V means add 1V to higher output voltage. 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.
NJM2893
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! TEST CIRCUIT
A
VIN
IIN
VIN
VOUT1
*3 1.0µF
(ceramic
0.1µF ICONT1
NJM2893
IOUT1
V
VOUT1
A V
VCONT1
CONTROL1
VOUT2
1.0µF
*3
(ceramic
IOUT2
V
VOUT2
A V
VCONT2
ICONT2
CONTROL2
VOUT3
1.0µF*3
(ceramic)
IOUT3
V
VOUT3
A V
VCONT3
ICONT3
CONTROL3 GND
*3 Vo≤2.6V version: Co=2.2µF(ceramic)
NJM2893
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! TYPICAL APPLICATION 1 In the case where ON/OFF Control is not required:
VIN 0.1µF VIN VOUT1 1.0µF
*4
VOUT1
NJM2893
R1 (0~300kΩ) CONTROL1 VOUT2 VOUT2
1.0µF
*4
R2 (0~300kΩ)
CONTROL2 VOUT3 1.0µF
*4
VOUT3
R3 (0~300kΩ)
CONTROL3 GND
*4 Vo≤2.6V version: Co=2.2µF
Connect control terminal to VIN terminal
NJM2893
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2 In use of ON/OFF CONTROL:
VIN
VIN
VOUT1
1.0µF
*4
VOUT1
0.1µF R1 R2 R3
NJM2893
CONTROL1
VOUT2
1.0µF
*4
VOUT2
CONTROL2 VOUT3 1.0µF
*4
VOUT3
CONTROL3
GND
*4 Vo≤2.6V version: Co=2.2µF
State of control terminal: •“H”→ output is enabled. • “L” or “open” → output is disabled. %In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range.
NJM2893
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! ELECTRICAL CHARACTERISTICS
3.2
NJM2893_3V Output Voltage v.s. Input Voltage
@:Ta=25oC Co=1 µF(Ceramic)
4
NJM2893_3V Output Voltage vs. Output Current
3.5
3.1
Output Voltage :Vo [V]
3 Io=0A 3
Output Voltage :Vo [V]
2.5
2
2.9 Io=30mA
1.5
1 2.8 Io=100mA 0.5 @:Ta=25 oC V IN=4V Co=1 µF(Ceramic) 0 50 100 150 200
2.7 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5
0
Input Voltage :VIN [V]
Output Current :Io [mA]
20
NJM2893_3V Ground Pin Current vs. Output Voltage
@:Ta=25 C V IN=4V Co=1 µF(Ceramic)
o
0.3
NJM2893.