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Details, datasheet, quote on part number:NJM2374A
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Datasheet text preview:
NJM2374A
PWM DC/DC CONVERTER IC
GENERAL DESCRIPTION The NJM2374A is a PWM DC/DC converter IC. It features fixed frequency type PWM control for better noise handling and to avoid intermittent oscillation observed in a simplified controller. It is suitable for Step-Up, Step-Down and Inverting applications for EMI sensitive application. PACKAGE OUTLINE
NJM2374AD
NJM2374AM
FEATURES Operating Voltage (2.5V to 40V) NJM2374AE Operating Voltage (2.5V to 48V) Wide Oscillator Frequency (100Hz to 100kHz) Internal High Power Transistor 1.5A (max.) Internal Over Current Limit Circuit PWM form Switching Power Supply Control Bipolar Technology Package Outline DIP8, DMP8, EMP8, SSOP14
NJM2374AE
NJM2374AV
PIN CONFIGURATION PIN FUNCTION 1.CS 5.IN+ 2.ES 6.V+ 3.CT 7.SI 4.GND 8.CD
1
8
2
7
3
6
4
5
NJM2374AD NJM2374AM NJM2374AE
1 2 3 4 5 6 7 14 13 12 11 10 9 8
PIN FUNCTION 1.CS 8.IN+ 2.NC 9.NC 3.ES 10.V+ 4.NC 11.NC 5.CT 12.SI 6.NC 13.NC 7.GND 14.CD
NJM2374AV
Ver 3.0 - 1 -
NJM2374A
BLOCK DIAGRAM
CS
1 Q 1.5A 160 PWM Logic R S
8
CD
ES
2 Vth=300mV Maximum ON duty 9:1 OSC BLOCK Ipk Sense
7
SI
CT
3 PWM COMP
6
V+
GND
4
Vref 1.25V ±2%
ERR.AMP
5
I N+
(DIP8, DMP8, EMP8: PACKAGE)
CS
1 Q 1.5A 160 PW M Logic R S
14
CD
NC
2
13
NC
ES
3 Vth=300mV
12
SI
NC
4
Maximum ON duty 9:1 OSC BLOCK Ipk Sense
11
NC
CT
5 PWM COMP
10
V+
NC
6 Vref 1.25V ±2% ERR.AMP
9
NC
GND
7
8
I N+
(SSOP14: PACKAGE)
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NJM2374A
ABSOLUTE MAXIMUM RATINGS (Ta=25°C ) PARAMETER SYMBOL Maximum Supply Voltage V+ Output Switch Current Output Switch Voltage Comparator Input Voltage Power Dissipation PD ISW VSW VIR RATINGS 40 (NJM2374AE: 48V) 1.5 40 (NJM2374AE: 48V) -0.3 ~ 40 (NJM2374AE: 48V) (DIP8) 875 (DMP8) 750 (note1) (EMP8) 1,000 (note1) (SSOP14) 375 -40 ~ +85 -50 ~ +150 UNIT V A V V mW °C °C
Operating Temperature Range Topr Storage Temperature Range Tstg (note1) At on PC board. In the case of Step-Down Conversion with the internal power transistor, the Output Voltage must be set lower than 6V.
POWER DISSIPATION vs. AMBIENT TEMPERATURE
(Topr=-40 to +85°C,Tj= to +150°C)
1 200 1 000 8 00 6 00 4 00 2 00 0 25 50 NJM2374AV NJM2374AE At on PC board
Power Dissipation PD (mW)
NJM2374AD
NJM2374AM At on PC board
75
10 0
Ambient Temperature Ta (°C)
In the case of SSOP packaging, the power dissipation should carefully be considered when designing this parts.
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