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PDF NJM2375A Data sheet ( Hoja de datos )
| Número de pieza | NJM2375A | |
| Descripción | Switching Regulator IC / DIP8 / DMP8 / SIP8 / SSOP14 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJM2375/A
POWER FACTOR CONTROLLER
■ GENERAL DESCRIPTION
The NJM2375/A are active power factor controllers, which limit
the harmonic current resulting from the power supply block of
electrical devices.
They include a startup timer, an one quadrant multiplier, a zero
current detector to ensure critical condition operation, a
transconductance error amplifier, high precision reference, a
current sensing comparator, and a totem pole output ideally suited
for driving a power MOSFET.
They also contain protection circuits for overvoltage,
cycle-by-cycle overcurrent, and maximum peak current.
The startup threshold of NJM2375A is lower than that of
NJM2375.
■ FEATURES
● Overvoltage Comparator Eliminates Runaway Output Voltage
● Internal Quick Start
● Internal Startup Timer
● One Quadrant Multiplier
● Zero Current Detector
● High Precision Reference (±2%)
● Totem Pole Output with High State Clamp
● Undervoltage Lockout
(Startup Threshold/NJM2375:13V typ., NJM2375A:10.4V typ.)
● Low Startup and Operating Current
● Bipolar Technology
● Package Outline DIP8,DMP8,SSOP14,SIP8
■ PACKAGE OUTLINE
NJM2375D/AD
NJM2375M/AM
NJM2375V/AV
NJM2375L/AL
■ PIN CONFIGURATION
NJM2375D/AD
NJM2375M/AM
NJM2375V/AV
Ver.2003-07-18
NJM2375L/AL
PIN FUNCTION
1. MULT
2. NC
3. CSENSE
4. NC
5. DZERO
6. NC
7. GND
8. DRIVE
9. NC
10. V+
11. NC
12. VFB
13. NC
14. COMP
PIN FUNCTION
1. VFB
2. COMP
3. MULT
4. CSENSE
5. DZERO
6. GND
7. DRIVE
8. V+
-1-
1 page  
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■ ELECTRICAL CHARACTERISTICS (V+=12V*1, Ta=25°C)
● UNDERVOLTAGE LOCKOUT
PARAMETER
(NJM2375)
Startup Threshold
Minimum Operating
Voltage After Turn-On Hysteresis
(NJM2375A)
Startup Threshold
Minimum Operating
Voltage After Turn-On
Hysteresis
SYMBOL
Vth(on)
Vshutdown
VH
Vth(on)
Vshutdown
VH
TEST CONDITION
V+ Increasing
V+ Decreasing
V+ Increasing
V+ Decreasing
● TOTAL DEVICE
PARAMETER
Power Supply Current
Startup
Operating
Dynamic Operating
Power Supply Zener Voltage*4
SYMBOL
TEST CONDITION
ICC1 V+=7.0V
ICC2
ICC3 50kHz, CL=1.0nF
VZ ICC=25mA
NJM2375/A
MIN. TYP. MAX. UNIT
11.5 13.0 14.5
7.0 8.0 9.0
3.8 5.0 6.2
V
V
V
9.4 10.4 11.4
6.8 7.8 8.8
1.4 2.6 3.8
V
V
V
MIN. TYP. MAX. UNIT
- 0.25 0.4 mA
- 6.5 12 mA
- 9.0 20 mA
30 36
-
V
● NOTES
*1 : Adjust V+ above the startup threshold before setting to 12V.
*2 :
K=
Vth(max)
VM ×(Vcomp - Vth(M))
*3 : This parameter is measured with VFB=0V,and VM=3.0V.
*4 : Do not supply higher voltage above the zener voltage to 8pin, because the internal zener diode protects the IC
from surge.
Ver.2003-07-18
-5-
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet NJM2375A.PDF ] | |
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