UC3842BN in Tube by STMicroelectronics | Switching Regulators | Future Electronics
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STMicroelectronics | UC3842BN

Manufacturer Part #

UC3842BN

UC3842B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8

ECAD Model:
Mfr. Name: STMicroelectronics
Standard Pkg:
Product Variant Information section
Date Code: 1938
Product Specification Section
STMicroelectronics UC3842BN - Technical Attributes
Attributes Table
Package Style:  DIP-8
Mounting Method: Through Hole
Features & Applications
The UC3842BN is of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5 A.

A precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the offstate.

Features:

  • Trimmed Oscillator for Precise frequency Control
  • Oscillator Frequency Guaranteed at 250 Hz
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Copensation
  • Latching PWM for Cycle-by-cycle Current Limiting
  • Internally Trimmed Reference with Undervoltage lockout
  • High Current totem pole output Undervoltage Lockout With Hystersis
  • Low Start-up and Operating Current
Read More...
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
14 Weeks
Minimum Order:
6000
Multiple Of:
50
Total
$1,680.00
USD
Quantity
Unit Price
1
$0.315
125
$0.305
400
$0.30
1,500
$0.29
5,000+
$0.28
Product Variant Information section
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