CONVERTER IC. NJM2374A Datasheet

NJM2374A IC. Datasheet pdf. Equivalent

NJM2374A Datasheet
Recommendation NJM2374A Datasheet
Part NJM2374A
Description PWM DC/DC CONVERTER IC
Feature NJM2374A; NJM2374A PWM DC/DC CONVERTER IC ■GENERAL DESCRIPTION ■PACKAGE OUTLINE The NJM2374A is a PWM DC/D.
Manufacture New Japan Radio
Datasheet
Download NJM2374A Datasheet




New Japan Radio NJM2374A
NJM2374A
PWM DC/DC CONVERTER IC
GENERAL DESCRIPTION
PACKAGE OUTLINE
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.
NJM2374AD
( DIP8 )
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, SOP8 JEDEC 150mil
SSOP14
*Ta =25°C. At low temperature, the minimum voltage is 3.0V.
PIN CONFIGURATION
NJM2374AE
( SOP8 )
18
PIN FUNCTION
2
7
1. CS
5. IN+
2. ES
6. V+
3
6
3. CT
7. SI
4. GND
8. CD
45
NJM2374AD
NJM2374AM
NJM2374AE
1 14
2 13
3 12
4 11
5 10
69
78
NJM2374AV
PIN FUNCTION
1. CS
8. IN+
2. NC
3. ES
9. NC
10. V+
4. NC
11. NC
5. CT
12. SI
6. NC
13. NC
7. GND
14. CD
Ver.2011-12-08
NJM2374AM
( DMP8 )
NJM2374AV
( SSOP14 )
-1-



New Japan Radio NJM2374A
NJM2374A
BLOCK DIAGRAM
CS 1
1.5A
ES 2
160
Maximum
ON duty 9:1
OSC BLOCK
CT 3
QS
PW M
Logic
R
Vth=300mV
Ipk Sense
PWM COMP
GND 4
Vref
1.25V
±2%
ERR.AMP
8 CD
7 SI
6 V+
5 IN+
(DIP8, DMP8, SOP8: PACKAGE)
-2-
CS 1
NC 2 1.5A
ES 3
160
NC 4
Maximum
ON duty 9:1
OSC BLOCK
CT 5
QS
PW M
Logic
R
Vth=300mV
Ipk Sense
PWM COMP
NC 6
GND 7
Vref
1.25V
±2%
ERR.AMP
14 CD
13 NC
12 SI
11 NC
10 V+
9 NC
8 IN+
(SSOP14: PACKAGE)
Ver.2011-12-08



New Japan Radio NJM2374A
NJM2374A
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C )
PARAMETER
SYMBOL
RATINGS
UNIT
Maximum Supply Voltage
Output Switch Current
Output Switch Voltage
Comparator Input Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
V+
40
(NJM2374AE: 48V)
ISW 1.5
VSW
40
(NJM2374AE: 48V)
VIR
-0.3 ~ 40
(NJM2374AE: 48V)
(DIP8)
875
PD
(DMP8)
(SOP8)
750 (note1)
1,000 (note1)
(SSOP14)
375
Topr -40 ~ +85
Tstg -50 ~ +150
V
A
V
V
mW
°C
°C
(note1) At on PC board.
In the case of Step-Down and Inverting Conversion with the internal power transistor,
the Output Voltage must be set lower than 6V(-6V).
POWER DISSIPATION vs. AMBIENT TEMPERATURE
1200
1000
800
(Topr=-40 to +85°C,Tj= to +150°C)
NJM2374AE
At on PC board
NJM2374AD
600
NJM2374AM
At on PC board
400
NJM2374AV
200
0
25 50 75 100
Ambient Temperature Ta (°C)
In the case of SSOP packaging, the power dissipation should carefully
be considered when designing this parts.
Ver.2011-12-08
-3-







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