njw4150 New Japan Radio Co.,Ltd, njw4150 Datasheet

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njw4150

Manufacturer Part Number
njw4150
Description
Internal 34v Mosfet Switching Regulator Ic For Buck Converter
Manufacturer
New Japan Radio Co.,Ltd
Datasheet
■PIN CONFIGURATION
Ver.2011-02-25
34V, 450mA MOSFET. It corresponds to high frequency oscillating,
wide input voltage and Low ESR Output Capacitor (MLCC).
Therefore, the NJW4150 can realize downsizing of applications
with a few external parts.
thermal shutdown circuit.
Automation Equipment, Industrial Instrument and so on.
GENERAL DESCRIPTION
FEATURES
The NJW4150 is a switching regulator IC for buck converter with
Also, it has a soft start function, over current protection and
It is suitable for power supply circuit of Car Accessory, Office
Absolute Maximum Rating
Operating Voltage Range
Switching Current
PWM switching control
Applicable for Ceramic Capacitor (MLCC)
Oscillation Frequency
Soft Start Function
Over Current and Thermal Shutdown Protection
Standby Function
Package Outline
1
2
3
4
Internal 34V MOSFET Switching Regulator IC for Buck Converter
NJW4150RB1
NJW4150RB1 : TVSP8
8
7
6
5
42V
6V to 34V
450mA min.
1MHz typ. (A ver.)
4ms typ.
PIN FUNCTION
1. SW
2. N.C.
3. V
4. ON/OFF
5. FB
6. IN-
7. N.C.
8. GND
+
■ PACKAGE OUTLINE
NJW4150RB1
NJW4150
- 1 -

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njw4150 Summary of contents

Page 1

... Internal 34V MOSFET Switching Regulator IC for Buck Converter GENERAL DESCRIPTION The NJW4150 is a switching regulator IC for buck converter with 34V, 450mA MOSFET. It corresponds to high frequency oscillating, wide input voltage and Low ESR Output Capacitor (MLCC). Therefore, the NJW4150 can realize downsizing of applications with a few external parts ...

Page 2

... NJW4150 ■BLOCK DIAGRAM ON/OFF High: ON Low : OFF (Standby) FB IN- PRODUCT VERSION PART NUMBER NJW4150RB1-A ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Supply Voltage SW pin Voltage IN- pin Voltage ON/OFF pin Voltage Power Dissipation Junction Temperature Range Operating Temperature Range Storage Temperature Range (*1): Mounted on glass epoxy board based on EIA/JEDEC. (76.2mm × 114.3mm × 1.6mm: 2 Layers FR-4) (*2): Mounted on glass epoxy board based on EIA/JEDEC ...

Page 3

... ON/OFF I LEAK V = → ON/OFF → L OFF ON/OFF R =No Load 0.9V, V =0.5V IN =0V DD_STB ON/OFF NJW4150 MIN. TYP. MAX. UNIT 5.6 5.8 6.0 5.4 5.6 5.8 150 200 – 900 1,000 1,100 kHz – 333 – kHz – 1 – % – ...

Page 4

... NJW4150 TYPICAL APPLICATIONS + ON/OFF ON/OFF High: ON Low: OFF (Standby NJW4150 IN- GND SBD OUT OUT R1 Ver.2011-02-25 ...

Page 5

... Error Amplifier Block Voltage Gain, Phase vs. Frequency + (V =24V, Gain=40dB, Ta= Phase Gain 0 100 Frequency f (kHz) NJW4150 Switching Current Limit vs. Operating Voltage o (Ta=25 C) 750 700 650 600 550 500 450 Operating Voltage V Quiescent Current vs. Operating Voltage (R =No Load ...

Page 6

... NJW4150 ■TYPICAL CHARACTERISTICS Oscillator Frequency vs. Temperature + (V =24V) 1100 1050 1000 950 900 -50 - Ambient Temperature Ta ( Soft Start Time vs. Temperature + (V =24V -50 - Ambient Temperature Ta ( Output ON Resistance vs. Temperature (I =300mA 2 =6V 2 1.5 1 0.5 0 -50 - Ambient Temperature Ta ( ...

Page 7

... Under Voltage Lockout Block vs. Temperature 6 5.9 V T_ON 5.8 5.7 5.6 V T_OFF 5.5 5.4 -50 - Ambient Temperature Ta ( Ver.2011-02-25 =0.5V) IN 100 125 150 100 125 150 o C) NJW4150 Standby Current vs. Temperature (V =0V) ON/OFF + V =34V + V =24V + V =6V -50 - 100 125 150 Ambient Temperature ...

Page 8

... NJW4150 MEMO - 8 - [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights ...

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