NJM2384D#

Voltage - Input (Max):	32V
Supplier Device Package:	14-DIP
Package / Case:	14-DIP
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	105kHz
Current - Output:	200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Series:	--
Voltage - Input (Min):	3.6V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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NJM2384D# Application Field and Working Principle

Introduction: NJM2384D# is an advanced DC / DC switching regulator IC that integrates the pulse-width-modulated (PWM) control circuitry, voltage reference and oscillator into one package. It is manufactured by the Japan Radio Company (JRC) and mainly applied to battery-powered portable applications such as personal digital assistant (PDAs), cell phones and portable audio equipment.Overview: With a high-voltage input operating range of 2.5V to 16V, NJM2384D# can supply two independent voltage outputs. It has an adjustable output voltage up to 5V, and a fixed 5V output. The PWM switching frequency of NJM2384D# is controllable from 200 kHz to 1.2 MHz. PWM Controller: NJM2384D# integrates the on-chip PWM controller to generate gate drive signals to control the power switch in the Flyback-type power supply. It provides an improved protection against electromagnetic interference (EMI) and also reduces the number of external components. It can also provide better power efficiency, smaller size, less noise and high transient response.Voltage Reference and Oscillator: NJM2384D# also has an on-chip voltage reference and oscillator to provide the voltage reference and control the switching frequency. The voltage reference is adjustable over a wide range, and the oscillator can be programmed through external components. The oscillator frequency is determined by the external capacitance and resistor.Output Voltage Control: NJM2384D# has an adjustable output voltage up to 5V. In addition, the output voltage is controlled by the reference voltage and the detection of the switch current. The output voltage can also be adjusted by changing the external components like resistors and capacitors.Protection Features: NJM2384D# also has a variety of protection features such as over-current protection, over-temperature protection and over-voltage protection. It also has an adjustable trip point for over-current protection and a latch-off system for the output automatically turns off after an over-current event. All these features prevent any permanent or severe damages to NJM2384D#.Conclusion: NJM2384D# is an advanced DC / DC switching regulator IC designed by JRC with a wide operating range (2.5V to 16V). Its PWM control circuitry, voltage reference and oscillator are integrated into one package. NJM2384D# is mainly used for portable battery-powered applications such as PDAs and cell phones. It has an adjustable output voltage up to 5V, and a variety of protection features to prevent damages.

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