UC1856-SP Datasheet Improved Current-Mode PWM Controller

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UC1856-SP Improved Current-Mode PWM Controller UC1856-SP SLUSBV6 – APRIL 2014.

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UC1856-SP improved current-mode pwm controller by Texas Instruments - Datasheet Preview

Datasheet Details

Part number	UC1856-SP
Manufacturer	Texas Instruments
File Size	588.35 KB
Description	Improved Current-Mode PWM Controller
Download	UC1856-SP Download (PDF)

General Description

The UC1856 is a high-performance version of the popular UC1846 series of current-mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important.

All input-to-output delays have been minimized, and the current sense output is slew-rate limited to reduce noise sensitivity.

Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

Key Features

1 Pin-for-Pin Compatible With the UC1846.
65-ns Typical Delay From Shutdown to Outputs, and 50-ns Typical Delay From SYNC to Outputs.
Improved Current-Sense Amplifier With Reduced Noise Sensitivity.
Differential Current Sense with 3-V Common- Mode Range.
Trimmed-Oscillator Discharge Current for Accurate Deadband Control.
Accurate 1-V Shutdown Threshold.
High-Current Dual Totem-Pole Outputs (1.5-A peak).
TTL Compatible Oscill.

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