UC3843BN in Tube by STMicroelectronics | Switching Regulators | Future Electronics
text.skipToContent text.skipToNavigation

warning.svgOrders shipping outside of United States will be on hold while the company evaluates tariff impacts.
Please contact your salesperson for assistance.

  1. home
  2. Semiconductors
  3. Analog
  4. Regulators & References
  5. Switching Regulators
  6. UC3843BN

STMicroelectronics | UC3843BN

Manufacturer Part #

UC3843BN

UC3843B 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: 2429
Product Specification Section
STMicroelectronics UC3843BN - Technical Attributes
Attributes Table
Mounting Method: Through Hole
Features & Applications
The UC3843BN 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:
-1
Factory Lead Time:
14 Weeks
Minimum Order:
4000
Multiple Of:
50
tariff icon
Tariff charges may apply if shipping to the United States. An estimate of tariff charges will be calculated at checkout.
Total
$1,360.00
USD
Quantity
Unit Price
50
$0.365
250
$0.355
1,000
$0.345
2,500
$0.34
6,250+
$0.325
Product Variant Information section
Related Products
UC3844BN
UC3844BN
STMicroelectronics
UC3844B Series 250 kHz High Performance Current Mode PWM Controller - DIP-8
As low as: $0.36 (USD)
UC3844BN
UC3844BN
STMicroelectronics
UC3844B Series 250 kHz High Performance Current Mode PWM Controller - DIP-8
As low as: $0.36 (USD)
UC3845BN
UC3845BN
STMicroelectronics
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
As low as: $0.36 (USD)