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UC2844AD8

In Stock: 7,264

30-V, 1A, 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle, 40°C to 85°C

Manufacturers:
Texas Instruments, Inc
Mfr.Part#:
UC2844AD8
Datasheet:
UC2844AD8 Datasheet (PDF)
Package/Case:
SOP-8
Product Type:
Power Supply Controllers, Monitors
RoHS:
Lifecycle:
Active
EDA/CAD Models:
Request Free CAD Models for UC2844AD8

UC2844AD8 Information

Description

The UC2844AD8 is a current mode PWM controller from Texas Instruments. It's designed for use in power supplies, battery chargers, LED drivers, and other applications where efficient voltage regulation and power conversion are needed. Key features include a wide input voltage range (7V to 35V), adjustable output frequency up to 500 kHz, low quiescent current, and built-in protection mechanisms like overcurrent and shutdown for load disconnect and short-circuit safety.

Features

The UC2844AD8 is a high-speed PWM controller designed for power management applications. Key features include:
Wide input voltage range (7V to 35V).
Adjustable frequency up to 500 kHz.
Active-low enable input and soft-start/undervoltage lockout functions.
Low quiescent current and overcurrent protection.
Shutdown mode for load disconnect and short-circuit protection. These features make the UC2844AD8 suitable for various power management tasks such as switch-mode power supplies, battery chargers, LED drivers, etc.

Package

The UC2844AD8 uses a Small Outline Package (SOP) - D0008A.

Pinout

The UC2844AD8 has a pin count of 1
Pin functions include: 1-5: PWM Outputs (adjustable frequency) 6: Enable (active low) 7: Undervoltage Lockout (UVLO) 8: Soft-start Timer 9: Comparator Output (for voltage feedback) 10: Error Amplifier Input 11: Current Feedback Input 12-16: Not used or configurable Please note that specific pin functions may vary slightly depending on the documentation.

Manufacturer

The UC2844AD8 is manufactured by Texas Instruments (TI). TI is a leading technology company, specializing in semiconductors, software, and embedded systems. With a strong focus on innovation and research, TI contributes to various industries, including power management for the UC2844AD8.

Applications

The UC2844AD8 is a current mode PWM controller used in power supply applications like switch-mode regulators, battery chargers, LED drivers, and other high-efficiency power conversion tasks.

Equivalent

The equivalent product to UC2844AD8 by Texas Instruments is likely the UC3846A or a similar current mode PWM controller from TI's portfolio.

Specifications

genericPartNumber	LP5907-Q1	orderablePartNumber	LP5907QMFX-2.5Q1
partDescription	Automotive, 250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable	statusDisplay	ACTIVE
statusDescription	This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.	Package/Case	SOP-8

UC2844AD8 FAQs

1.Q: Is there a typical applications circuit available for the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: Yes, the datasheet provides a reference design for common topologies like Buck or Boost converters. Ensure proper external component selection for your application.

2.Q: Are there related parts to the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: Similar parts include other Unitrode current-mode PWM controllers with varying UVLO thresholds or switching frequencies. Check the manufacturer’s portfolio for alternatives.

3.Q: What is the maximum operating power dissipation for the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: The maximum power dissipation is 1000mW under specified operating conditions.

4.Q: What are the key electrical characteristics of the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: It has 1A max output current, 50ns rise/fall times, 500kHz switching frequency, and ±52kHz oscillator accuracy.

5.Q: What package does the Unitrode Corporation 30-V, 1A, 500KHz PWM controller use?

A: It is available in an 8-pin SOIC package with a max height of 1.5mm and lead gull-wing configuration.

6.Q: What are the recommended operating conditions for the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: Operate at 11V typical supply voltage (up to 30V max) with ambient temperatures between -40°C and 85°C.

7.Q: What are the absolute maximum ratings for the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: Absolute max ratings include 30V supply voltage, 1000mW power dissipation, and an operating temperature range of -40°C to 85°C.

8.Q: What applications is the Unitrode Corporation 30-V, 1A, 500KHz PWM controller suitable for?

A: It is designed for DC-DC converters in power supplies, supporting topologies like Boost, Buck, Flyback, and Forward.

9.Q: What are the key features of the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: Key features include current-mode control, 500kHz switching frequency, 50% max duty cycle, 16V/10V UVLO thresholds, and a 1A output current capability.

10.Q: What is the pinout configuration for the Unitrode Corporation 30-V, 1A, 500KHz PWM controller?

A: The device uses an 8-pin SOIC package. Pin functions include VCC, COMP, GND, and PWM output. Refer to the datasheet for the complete pinout diagram.

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Ratings and Reviews

L

L**s
05/09/2023

14

The first time i turned on-shows 3 v i turn on the next day-5 v i do not understand what such we will think that it will work normally
C

C**b
04/26/2023

7

Super set! I recommend!
N

N**h
10/11/2022

15

Works and good. Striking small size. Not heated. I recommend.
S

S**a
11/30/2020

19

avaq Electronics is very good vendor, hope we can have more cooperation in the future.

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