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UC2842BD1R2G

High Performance Current Mode PWM Controller

Manufacturer:

ON Semiconductor, LLC
Mfr.Part #:

UC2842BD1R2G
Datasheet:

UC2842BD1R2G Datasheet (PDF)
Output Type:

Transistor Driver
Function:

Step-Up, Step-Up/Step-Down
Output Configuration:

Positive, Isolation Capable
Topology:

Boost, Flyback
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UC2842BD1R2G General Description

The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for single pulse metering.

These devices are available in an 8-pin dual-in-line and surface mount (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-14 package has separate power and ground pins for the totem pole output stage.

The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

Key Features

Trimmed Oscillator for Precise Frequency Control
Oscillator Frequency Guaranteed at 250 kHz
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle-By-Cycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
Pb-Free Packages are Available

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)DC DC Switching Controllers	Series	-
Output Type	Transistor Driver	Function	Step-Up, Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable	Topology	Boost, Flyback
Number of Outputs	1	Output Phases	1
Voltage - Supply (Vcc/Vdd)	10V ~ 30V	Frequency - Switching	Up to 500kHz
Duty Cycle (Max)	96%	Synchronous Rectifier	No
Clock Sync	No	Serial Interfaces	-
Control Features	Frequency Control	Operating Temperature	-25°C ~ 85°C (TA)
Mounting Type	Surface Mount	Base Product Number	UC2842

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Ratings and Reviews

J**n 03/10/2021

Thanks received my parcel in perfect condition

R**d 02/27/2021

I received my electronic parts today. Very well packaged. Until the next time, thank you for the excellent service. Robert Strand Canada

L**m 11/09/2020

I take not the first time. Delivery 30 days. The track was not tracked. Packed in a vacuum bag and a bag with pouches. We got there. Working. The product corresponds to the description and photo. I recommend the product and the seller.

S**a 07/15/2020

Good product and compact