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NJM2392 PDF даташит

Спецификация NJM2392 изготовлена ​​​​«NJR Corporation» и имеет функцию, называемую «PWM DC/DC Converter IC».

Детали детали

Номер произв NJM2392
Описание PWM DC/DC Converter IC
Производители NJR Corporation
логотип NJR Corporation логотип 

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NJM2392 Даташит, Описание, Даташиты
NJM2392
PWM DC/DC Converter IC
GENERAL DESCRIPTION
The NJM2392 is a PWM DC/DC converter IC.
www.datasheet4u.com
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.
In addition, it contains a pulse-by-pulse current limit circuit
and can be set by an external resistance.
PACKAGE OUTLINE
NJM2392D
NJM2392M
FEATURES
Operating Voltage
3.0V to 40V
Wide Oscillator Frequency
1kHz to 150kHz
Internal High Power Transistor 1.5A max.
Internal Over Current Limit Circuit
PWM switching control
Bipolar Technology
Package Outline
NJM2392D
: DIP8
NJM2392M
: DMP8
PIN CONFIGURATION
BLOCK DIAGRAM
1
8
PIN FUNCTION
1. CS
CS
1
2 7 2. ES
3. CT
1.5A
3 6 4. GND
5. IN-
160
4
5 6. V+
ES 2
NJM2392D
7. SI
8. CD
OSC Block
MAX
NJM2392M
ON Duty
9:1
QR
PW M
Logic
S
Ipk Sense
300mV
8 CD
7 SI
CT 3
Vref
1.25V
Error AMP
6 V+
PWM COMP
GND 4
Buffer
5 IN-
Ver.2008-08-29
-1-









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NJM2392 Даташит, Описание, Даташиты
NJM2392
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
Maximum Supply Voltage
Comparator Input Voltage
www.OdautatpshueteDt4ruiv.ceormVoltage
Output Switch Voltage
Output Driver Current
Output Switch Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V+
VIR
VC(driver)
VSW
IC(driver)
ISW
PD
Topr
Tstg
MAXIMUM RATINGS
40
-0.3 ~ 40 (note)
40
40
100
1.5
DIP8
DMP8
875
580 (*1)
750 (*2)
-40 ~ +85
-50 ~ +150
UNIT
V
V
V
V
mA
A
mW
°C
°C
(note) When supply voltage is less than 40V, the absolute maximum input voltage is equal to the supply voltage.
(*1) At on PC board : 114.3mm × 76.2mm × 1.6mm(2 layer FR-4) : Conform to EIA/JEDEC
(*2) At on PC board :114.3mm × 76.2mm × 1.6mm(4 layer FR-4) : Conform to EIA/JEDEC
POWER DISSIPATION vs. AMBIENT TEMPERATURE
Power Dissipation vs. Ambient Temperature
1000
(Topr=-40~+85oC, Tj= ~150oC)
DIP8
800
600
400
200
0
0
DMP8
At on 4 layer PC Board
At on 2 layer PC Board
25 50 75 100
Ambient Temperature Ta (oC)
-2-
Ver.2008-08-29









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NJM2392 Даташит, Описание, Даташиты
NJM2392
ELECTRICAL CHARACTERISTICS
DC Characteristics (V+=5V, Ta=25°C)
PARAMETER
www.datasheet4u.com
SYMBOL
TEST CONDITIONS
OSCILLATOR BLOCK
Oscillation Frequency
Charge Current
Discharge Current
Voltage Swing
Discharge to Charge
Current Ratio
fOSC
Ichg
Idis
VOSC
Iratio
IN-=0V, CT=1nF
CT=1nF
Ichg/Idis
CURRENT LIMIT
Peak Current
Sense Voltage
Vipk
OUTPUT SWITCH
Saturation Voltage 1
Saturation Voltage 2
Output Transistor
Bias Resistance
DC Voltage Gain
Collector Off-State Current
Vsat1
Vsat2
Rbias
hFE
IC(Off)
Darlington Connection
(CS=CD), ISW=0.7A
ISW=0.7A, IC(driver)=50mA
(Forced β≈14)
ISW=0.7A,VCE=5.0V
VCE=40V
ERROR AMPLIFIER
Threshold Voltage
Input Bias Current
Vth
IIB IN-=0V
GENERAL CHARACTERISTICS
Operating Current
ICC
CT=1nF, SI=V+, IN->Vth, ES=GND
MIN. TYP. MAX. UNIT
18 27 36 kHz
11 18 27 µA
110 180 300 µA
– 0.5 – VP-P
– 9 ––
250 300 350 mV
– 1.0 1.3 V
– 0.5 0.7 V
– 160 –
35 120
– 0.01 1 µA
1.225 1.250 1.275
– 300 900
V
nA
– 2.8 4.0 mA
(note) Output switch tests are performed under pulsed conditions to minimize power dissipation.
Ver.2008-08-29
-3-










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