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UC3843BVD1R2G +BOM

Advanced Controller for Optimal Power Regulation

Manufacturer:

Onsemi
Mfr.Part #:

UC3843BVD1R2G
Datasheet:

UC3843BVD1R2G Datasheet (PDF)
Compliance:

PbAHP
Case Outline:

751-07
MSL Type:

1
MSL Temp (°C):

260
EDA/CAD Models:

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UC3843BVD1R2G General Description

The UC3843BVD1R2G is a PWM controller IC manufactured by ON Semiconductor. It operates in voltage mode control with a fixed frequency oscillator. The device is designed for power supply applications, specifically in offline and DC-DC converters. It features a high-performance voltage feedback loop with a reference accuracy of ±1%. The UC3843BVD1R2G integrates various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and overcurrent protection (OCP), enhancing system reliability. Its adjustable soft-start function prevents large inrush currents during startup, minimizing stress on components. The IC operates over a wide temperature range and is available in a compact SOIC-8 package, facilitating space-constrained designs. With its comprehensive features and compact form factor, the UC3843BVD1R2G is suitable for various power management applications, including offline power supplies, battery chargers, and LED drivers

Key Features

The UC3843BVD1R2G is a voltage mode PWM controller IC

It features adjustable frequency, voltage feedforward compensation, internal soft start, precision reference, and low startup current

With a maximum duty cycle of 50%, it operates from an input voltage range of 7V to 30V, making it suitable for various power supply applications

Application

The UC3843BVD1R2G is a PWM controller commonly used in power supplies for applications such as LED lighting, battery chargers, and DC-DC converters

It regulates voltage by adjusting the duty cycle of a switching transistor, making it suitable for various power management tasks in consumer electronics, industrial equipment, and automotive systems

Specifications

Status	Active	Compliance	PbAHP
Case Outline	751-07	MSL Type	1
MSL Temp (°C)	260	Container Type	REEL
Container Qty.	2500	ON Target	N
Topology	Flyback	Control Mode	Current Mode
fsw Typ (kHz)	52	Stand-by Mode	No
UVLO (V)	Yes	Short Circuit Protection	Yes
Latch	No	Soft Start	Yes
VCC Max (V)	30	Drive Cap. (mA)	200 / 200
Pricing ($/Unit)	$0.24