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NJM2340

JRC
Part Number NJM2340
Manufacturer JRC
Description HIGH PRECISION DC/DC CONVERTER CONTROL IC
Published Jun 14, 2009
Detailed Description NJM2340 www.DataSheet4U.com HIGH PRECISION DC/DC CONVERTER CONTROL IC ■GENERAL DESCRIPTION NJM2340 is a high precision ...
Datasheet PDF File NJM2340 PDF File

NJM2340
NJM2340

Overview
NJM2340 www.
DataSheet4U.
com HIGH PRECISION DC/DC CONVERTER CONTROL IC ■GENERAL DESCRIPTION NJM2340 is a high precision DC/DC converter control IC with current sense amplifier.
It uses a low side current sensing which reduces external components and improves accuracy.
It is applicable for a wide range of application since it features high operating voltage and small outline packages.
■PACKAGE OUTLINE NJM2340M NJM2340RB1 ■FEATURES ●PWM switching control ●Operating Voltage (3.
6 to 32V) ●Wide Oscillator Range (20kHz to 500 kHz) ●Duty Cycle (0% to 100%) ●Current Sensing Amplifier ●High Precision Reference Voltage Voltage Detect: 1V±1.
5% Current Detect: 150mV±4% ●Bipolar Technology ●Package Outline DMP8, TVSP8 ■PIN CONFIGURATION 1 2 3 4 8 7 6 5 NJM2340M NJM2340RB1 Pin Function 1.
IN1 2.
IN2 3.
F.
B 4.
GND 5.
OUT 6.
CT 7.
VREF 8.
V+ Ver 2.
0 - 1 - NJM2340 www.
DataSheet4U.
com ■BLOCK DIAGRAM V+ 8 VREF 7 CT 6 OUT 5 VREF OSC ERROR AMP 1V PWM CURRENT SENSE AMP 0.
15V 1 IN1 2 IN2 3 F.
B 4 GND ■ABSOLUTE MAXIMUM RATINGS (Ta=25°C ) PARAMETER SYMBOL RATINGS + Maximum Supply Voltage V 36 Output Sink Current ISINK 15 (DMP8) 300 Power Dissipation PD (TVSP8) 320 Operating Temperature Range Topr -40 ∼ +85 Storage Temperature Range Tstg -50 ∼ +150 UNIT V mA mW °C °C ■RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER Supply Voltage Oscillation Frequency Oscillator Timing Resistance SYMBOL V+ fosc RT MIN.
3.
6 20 20 MAX.
32 500 100 UNIT V kHz kΩ -2- NJM2340 www.
DataSheet4U.
com ■ELECTRICAL CHARACTERISTICS (V+=12V,Ta=25°C) REFERENCE VOLTAGE BLOCK PARAMETER SYMBOL TEST CONDITION Output Voltage Line Regulation Load Regulation OSCILLATOR BLOCK PARAMETER Oscillation Frequency VREF LINE LOAD IOR=1mA V =3.
6 ∼ 32V, IOR=1mA IOR=0.
1 ∼ 5.
0mA + MIN.
1.
98 – – TYP.
2.
00 4.
0 6.
0 MAX.
2.
02 20 40 UNIT V mV mV SYMBOL fOSC TEST CONDITION RT=27kΩ, CT=220pF MIN.
315 TYP.
350 MAX.
385 UNIT kHz CURRENT SENSE AMPLIFIER BLOCK PARAMETER SYMBOL Reference Voltage1 Input Bias Voltage1 Maxim...


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