NJM2846 New Japan Radio, NJM2846 Datasheet

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NJM2846

Manufacturer Part Number
NJM2846
Description
(NJM2845 / NJM2846) LOW DROPOUT VOLTAGE REGULATOR
Manufacturer
New Japan Radio
Datasheet

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www.datasheet4u.com
applications.
Ver.2005-01-20
GND
and low quiescent current.
built in type. These product can be selected according to the
Bipolar technology achieves low noise, high ripple rejection
GENERAL DESCRIPTION
FEATURES
PIN CONFIGURATION
EQUIVALENT CIRCUIT
NJM2845 is 3 terminal type and NJM2846 is ON/OFF control
V
The NJM2845 is low dropout voltage regulator. Advanced
High Ripple Rejection
Output Noise Voltage
Output capacitor with 2.2 F ceramic capacitor (Vo 2.6V)
Output Current
High Precision Output
Low Dropout Voltage
ON/OFF Control
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
IN
NJM2845DL1
Bandgap
Reference
1
2
NJM2845DL1
3
1.V
2.GND
3.V
LOW DROPOUT VOLTAGE REGULATOR
OUT
IN
75dB typ. (f=1kHz,3V Version)
TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3)
Vno=45 Vrms typ. (Vo=3V Version)
Io(max.)=800mA
Vo 1.0%
0.18V typ. (Io=500mA)
(NJM2846)
Thermal
Protection
1 2 3 4 5
NJM2846DL3
3
V
OUT
1.CONTROL
2.V
3.GND
4.Vo
5.NC
IN
Control
GND
V
IN
NJM2845DL1
PACKAGE OUTLINE
Bandgap
Reference
NJM2846DL3
NJM2845/46
Thermal
Protection
NJM2846DL3
V
- 1 -
OUT

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NJM2846 Summary of contents

Page 1

... GENERAL DESCRIPTION The NJM2845 is low dropout voltage regulator. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. NJM2845 is 3 terminal type and NJM2846 is ON/OFF control built in type. These product can be selected according to the applications. FEATURES High Ripple Rejection Output Noise Voltage Output capacitor with 2 ...

Page 2

NJM2845/46 www.datasheet4u.com OUTPUT VOLTAGE RANK LIST Device Name V OUT NJM284*DL*-18 1.8V NJM284*DL*-23 2.3V NJM284*DL*-25 2.5V NJM284*DL*-03 3.0V NJM284*DL*-33 3.3V NJM284*DL*-05 5.0V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage V IN Control Voltage V CONT Power Dissipation P D Operating ...

Page 3

... POWER DISSIPATION vs. AMBIENT TEMPERATURE (Topr=-40~+85°C,Tj=+150°C -50 TEST CIRCUIT 2.6V version: Co=4.7 F(ceramic) TYPICAL APPLICATION 2.6V version: Co=4.7 F Ver.2005-01-20 NJM2846DL3 =10W θ =5°C/W HS θ =10°C/W HS θ =20°C/W HS Without Heat Sink - Ambient Temperature Ta(° ...

Page 4

... Vo/ Io Io=0 800mA Io=500mA ein=200mVrms, f=1kHz, Io=10mA, RR Vo=3V Version Vo Io=10mA f=10Hz 80kHz, Io=10mA Vo=3V Version I V =1.6V, Io=0mA CONT CONT V CONT(ON) V CONT(OFF) NJM2846DL3 =10W θ =5°C/W HS θ =10°C/W HS θ =20°C/W HS Without Heat Sink - Ambient Temperature Ta(°C) MIN. TYP. -1. ...

Page 5

... TEST CIRCUIT 2.6V version: Co=4.7 F(ceramic) Ver.2005-01- OUT NJM2846 0. CONT A CONTROL GND V CONT NJM2845/ OUT OU *6 2.2 F (ceramic ...

Page 6

... In use of ON/OFF CONTROL 2.6V version: Co=4.7 F State of control terminal: “H” output is enabled. “L” or “open” output is disabled 0.33 F NJM2846 R (0~300k ) CONTROL GND terminal NJM2846 0. CONTROL GND V V OUT OUT 2 OUT OUT 2 Ver.2005-01-20 ...

Page 7

TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Input Voltage 3.3 3.2 3.1 Io=0A 3 2.9 2.8 2.7 2.7 2.8 2.9 Input Voltage : V NJM2845_3.0V Ground Pin Current vs. Output Current ...

Page 8

NJM2845/46 www.datasheet4u.com TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Quiescent Current vs. Input Voltage 2500 2000 1500 1000 500 Input Voltage : V NJM2845_3.0V Ripple Rejection Ratio vs. Frequency 100 Io=10mA Io=100mA @:Ta=25 ...

Page 9

TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Output Voltage vs. Temperature 3.1 3.05 3 2.95 @:VIN=4.0V Io=30mA (Ceramic) Co=2.2 F 2.9 -50 0 Temperature : Ta ( NJM2845_3.0V Quiescent Current v.s. Input Voltage 600 500 400 300 200 100 0 -50 0 ...

Page 10

NJM2845/46 www.datasheet4u.com TYPICAL CHARACTERISTICS (NJM2845) NJM2845_3.0V Short Circuit Current v.s. Temperature 1000 800 600 400 200 0 - Temperature : Ta ( NJM2845_3V Line Transient Response 3.1 3.08 Input Voltage 3.06 3.04 Output Voltage 3. 2.98 ...

Page 11

... TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Output Voltage vs. Input Voltage 3.3 3.2 3.1 Io=0A 3 2.9 2.8 2.7 2.7 2.8 2.9 Input Voltage : V NJM2846_3.0V Ground Pin Current v.s. Output Current 200 400 Output Current : I NJM2846_3.0V Control Current vs. Control Voltage 0.5 1 1.5 Control Voltage : V Ver.2005-01-20 o @:Ta=25 C Co=2.2 F(Ceramic) Io=200mA Io=500mA 3 3 ...

Page 12

... NJM2845/46 www.datasheet4u.com TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Load Regulation vs. Output Current 0 -10 -20 -30 -40 -50 -60 o @:Ta=25 C -70 V =4.0V IN Co=2.2 F(Ceramic) -80 0 200 400 Output Current : Io(mA) NJM2846_3.0V Quiescent Current v.s. Input Voltage 2500 2000 1500 1000 500 Input Voltage : V NJM2846_3.0V Ripple Rejection Ratio v.s. Frequency 100 ...

Page 13

... TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Equivalent Serise Resistance vs. Output Current 100 o @:Ta= =4.0V IN Co=2 STABLE REGION 1 0.1 0.02 0.001 0.01 0.1 Output Current : Io(m A) NJM2846_3.0V Control Voltage v.s. Temperature 2 1.5 1 0.5 0 -50 0 Temperature : Ta ( NJM2846_3.0V Peak Output Current v.s. Temperature 2000 1500 1000 500 0 -50 0 Temperature : Ta ( Ver.2005-01- 100 10 @:V =4.0V ...

Page 14

... NJM2845/46 www.datasheet4u.com TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3.0V Line Regulation vs. Temperature 0.1 0.05 0 -0.05 @:V =4.0-9.0V IN Io=30mA (Ceramic) Co=2.2 F -0.1 -50 0 Temperature : Ta ( NJM2846_3.0V Output Voltage vs. Temperature 4 3.5 3 2.5 2 1.5 1 0.5 @:V =4.0V IN Io=30mA (Ceramic) Co=2 - Temperature : Ta ( NJM2846_3.0V ON/OFF Transient Response without Load 7 6 Control Voltage 5 4 Output Voltage @:Ta= =4.0V IN Co=2 ...

Page 15

... TYPICAL CHARACTERISTICS (NJM2846) NJM2846_3V Line Transient Response 3.1 3.08 Input Voltage 3.06 3.04 Output Voltage 3. 2.98 @:Ta= =4V IN Co=2.2 F 2.96 Io=30mA 2. Time : Ver.2005-01- 120 160 200 NJM2845/46 NJM2846_3V Load Transient Response 3.25 3.2 Output Current 3.15 3.1 3.05 3 Output Voltage 2.95 @:Ta=25 V 2.9 IN Co=2 120 160 ...

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