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See Technical Specifications

UC3846DW

Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull Regulator Positive Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 16-SOIC

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

UC3846DW
Datasheet:

UC3846DW Datasheet (PDF)
Output Type:

Transistor Driver
Function:

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

Positive
Topology:

Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull
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UC3846DW General Description

The UC1846/7 family of control devices provides all of the necessary features to implement fixed-frequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully-latched operation, double-pulse suppression, deadline adjust capability, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

Key Features

Automatic Feedforward Compensation
Programmable Pulse-by-Pulse Current Limiting
Automatic Symmetry Correction in Push-Pull
Configuration
Enhanced Load Response Characteristics
Parallel Operation Capability for Modular Power
Systems
Differential Current Sense Amplifier with Wide
Common Mode Range
Double-Pulse Suppression
500-mA (Peak) Totem-pole Outputs
±1% Band Gap Reference
Undervoltage Lockout
Soft-Start Capability
Shutdown Terminal
500-kHz Operation

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	Topology	Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull
Number of Outputs	2	Output Phases	1
Voltage - Supply (Vcc/Vdd)	6.95V ~ 40V	Frequency - Switching	500kHz
Duty Cycle (Max)	50%	Synchronous Rectifier	Yes
Clock Sync	Yes	Serial Interfaces	-
Control Features	Current Limit, Enable, Frequency Control, Soft Start	Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount	Base Product Number	UC3846

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Ratings and Reviews

S**h 03/16/2023

Seller good product discreet some integrated results chipped

J**h 03/19/2022

First deal went smooth. Jason ships new original parts as promised. Great service -- Bill.

N**s 04/26/2021

Article received, the account is there. Not tested yet.

V**n 07/03/2020

Super module! Can be triggered by light (jumper s3 in position 1, photo 4), as well as by dimming (jumper s3 in position 0, photo 5) i.e. Inverted. The delay is regulated by the right underarm and jumper s2, the removed jumper doubles the set time potentiometer. That is, if you set a time of 10 seconds, then removing the jumper timer will work after 20 seconds, the sensitivity is regulated by the potentiometer, which is on the left, in a wide range. And more: the delay only works to disconnect the relay. The relay has normally closed and normally open contacts, when working, switch to the opposite state, as in the automotive five-pin relay. The relay is good, the seller is well, i recommend!