text.skipToContent text.skipToNavigation

Référence fabricant

UC3843BN

UC3843B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8

Product Specification Section
STMicroelectronics UC3843BN - Caractéristiques techniques
Attributes Table
Méthode de montage : Through Hole
Fonctionnalités et 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

View the Complete family of UC384 PWM Controllers

Pricing Section
Stock global :
0
États-Unis:
0
Sur commande :
0
Stock d'usine :Stock d'usine :
-1
Délai d'usine :
14 Semaines
Commande minimale :
4000
Multiples de :
50
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.
Total 
1 560,00 $
USD
Quantité
Prix Internet
50
$0.44
200
$0.42
750
$0.405
2 000
$0.39
5 000+
$0.37