text.skipToContent text.skipToNavigation

Livraison gratuite aux États-Unis continentaux à partir de 50 $ US. Des conditions s'appliquent

  1. home
  2. Semiconducteurs
  3. Analogiques
  4. Contrôleurs de puissance
  5. Contrôleurs PWM
  6. UC3844BN

STMicroelectronics | UC3844BN

Référence fabricant

UC3844BN

UC3844B Series 250 kHz High Performance Current Mode PWM Controller - DIP-8

Modèle ECAD:
Nom du fabricant: STMicroelectronics
Emballage standard:
Product Variant Information section
Code de date:
Product Specification Section
STMicroelectronics UC3844BN - Caractéristiques techniques
Attributes Table
Supply Current-Max: 17mA
Supply Voltage: 10V to 30V
Frequency-Max: 250kHz
Input Voltage: 2.58V
Topology: Boost/Flyback
Rated Power: 1.25W
Duty Cycle-Min: 0%
Duty Cycle-Max: 50%
Operating Temp Range: -40°C to +150°C
Storage Temperature Range: -65°C to +150°C
Output Current: 1mA
Thermal Resistance: 100°C/W
Fonctionnalités et applications
The UC3844BN 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
d’Allemagne (En ligne seulement):
0
Sur commande :
0
Stock d'usine :Stock d'usine :
0
Délai d'usine :
14 Semaines
Commande minimale :
50
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 
20,75 $
USD
Quantité
Prix Internet
50
$0.415
250
$0.395
1 000
$0.38
2 500
$0.37
6 250+
$0.35
Product Variant Information section
Produits apparentés
UC3845BN
UC3845BN
STMicroelectronics
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
À partir de : $0.38 (USD)
UC3845BN
UC3845BN
STMicroelectronics
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
À partir de : $0.38 (USD)
UC3845BN
UC3845BN
STMicroelectronics
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
À partir de : $0.305 (USD)
UC3845BN
UC3845BN
STMicroelectronics
UC3845 Series 15 V 17 A High Performance Current Mode Controller - PDIP-8
À partir de : $0.38 (USD)
UC3843BN
UC3843BN
STMicroelectronics
UC3843B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8
À partir de : $0.37 (USD)
UC3843BN
UC3843BN
STMicroelectronics
UC3843B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8
À partir de : $0.37 (USD)
UC3843BN
UC3843BN
STMicroelectronics
UC3843B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8
À partir de : $0.355 (USD)
UC3843BN
UC3843BN
STMicroelectronics
UC3843B Series 30 V 17 mA High Performance Current Mode PWM Controller - DIP-8
À partir de : $0.37 (USD)