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UC3844BD1G +BOM

Current Mode PWM Controller

Manufacturer:

Onsemi
Mfr.Part #:

UC3844BD1G
Datasheet:

UC3844BD1G Datasheet (PDF)
Compliance:

PbAHP
Case Outline:

751-07
MSL Type:

1
MSL Temp (°C):

260
EDA/CAD Models:

Request Free CAD Models for UC3844BD1G

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UC3844BD1G General Description

The UC3844BD1G is a high-performance current-mode PWM controller designed for controlling switching power supplies. It features a high-speed pulse-width modulation (PWM) circuitry that operates at frequencies up to 500 kHz. This controller integrates functions such as a precision reference, a programmable oscillator, a pulse-steering flip-flop, a high-current totem-pole output stage, and an under-voltage lockout into a single chip.Operating with a voltage range of 8V to 35V, the UC3844BD1G offers flexibility in various power supply applications. It provides precise regulation of output voltage and current, ensuring stable and efficient power delivery. With its current-mode control architecture, it offers excellent transient response and cycle-by-cycle current limiting. Additionally, the UC3844BD1G includes features like adjustable soft start and frequency jitter for reducing electromagnetic interference (EMI). Its totem-pole output stage can source and sink current, enabling it to drive both power MOSFETs and bipolar transistors effectively.This controller comes in a small outline package (SOIC-8), making it suitable for compact designs. It is widely used in offline and DC-DC converter applications, such as in telecommunication equipment, industrial controls, and consumer electronics

Key Features

The UC3844BD1G is an integrated circuit with features including voltage mode control, high current totem pole output, cycle-by-cycle current limiting, externally programmable switching frequency, internal soft-start, and precision reference

It's designed for use in DC-DC converters and other power management applications

Application

The UC3844BD1G is a versatile PWM controller commonly used in power management applications, including DC-DC converters, battery chargers, and LED drivers

Its flexibility and wide operating voltage range make it suitable for various power supply designs in industries such as telecommunications, automotive, and industrial electronics

Specifications

Status	Last Shipments	Compliance	PbAHP
Case Outline	751-07	MSL Type	1
MSL Temp (°C)	260	Container Type	TUBE
Container Qty.	98	ON Target	N
Topology	Step-Up	Control Mode	Current Mode
fsw Typ (kHz)	52	Stand-by Mode	No
UVLO (V)	Yes	Short Circuit Protection	Yes
Latch	No	Soft Start	No
VCC Max (V)	25	Drive Cap. (mA)	200 / 200
Pricing ($/Unit)	Price N/A