text.skipToContent text.skipToNavigation

Référence fabricant


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

Modèle ECAD:
Nom du fabricant: STMicroelectronics
Emballage standard:
Code de date: 2209
Product Specification Section
STMicroelectronics UC2843BN - Caractéristiques techniques
Attributes Table
Supply Current-Max: 17A
Supply Voltage: 30V
Frequency-Max: 500kHz
Duty Cycle-Max: 100%
Operating Temp Range: -25°C to +85°C
Méthode de montage : Through Hole
$Fonctionnalités et 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.


  • 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

View the Complete family of UC284 Current Mode Controllers

Pricing Section
Stock globale:
42 500
42 500
Sur commande :
Stock d'usine :Stock d'usine :
Délai d'usine :
45 Semaines
Commande minimale :
Multiples de :
tariff icon
Des droits de douane peuvent s’appliquer en cas d’expédition vers les États-Unis. Une estimation des droits tarifaires sera dans ce cas calculée au moment du paiement.
34,25 $
Prix Internet
1 250
2 500
7 500+