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Manufacturer Part #

UC2843BN

UC2843 Series Current Mode PWM Controller Voltage Regulator - DIP-8

ECAD Model:
Mfr. Name: STMicroelectronics
Standard Pkg:
Product Variant Information section
Date Code: 1833
Product Specification Section
Technical Attributes
Attributes Table
Supply Current-Max: 17A
Supply Voltage: 30V
Frequency-Max: 500kHz
Duty Cycle-Max: 100%
Operating Temp Range: -25°C to +85°C
Mounting Method: Through Hole
Features & Applications
The UC2843BN 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 0.5mA.

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 250kHz
  • 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
Pricing Section
Global Stock:
20
USA:
20
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
26 Weeks
Minimum Order:
1
Multiple Of:
1
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Total
$0.64
USD
Quantity
Web Price
1
$0.635
100
$0.565
300
$0.55
1,500
$0.525
5,000+
$0.51
Product Variant Information section