UMW

UC2843B

13mA 50kHz 1A 10V~30V Fixed 5V 1 SOP-8 AC DC Converters, Offline Switchers RoHS

SOP-8ROHS3 CompliantActive

Fixed Frequency Current Mode PWM Controller

Manufacturer: UMW
Manufacturer part #: UC2843B
Store part #: C2995532
Package / case: SOP-8
Category: AC DC Converters, Offline Switchers
Packaging: Tape & Reel (TR)

Datasheet (PDF)

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16,320 in stock

#C2995532

Stock & price checked 23 h ago

Quantity	Unit price	Pack price
5+	₹27.56	₹137.80
50+	₹21.87	₹1,093.50
150+	₹19.43	₹2,914.50
500+	₹16.39	₹8,195.00
2,500+	₹13.18	₹32,950.00
5,000+	₹12.36	₹61,800.00

Quantity (min 5, multiples of 5)

5 × ₹27.56

₹137.80

excl. GST

₹162.60 incl. 18% GST

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Standard pack: 2,500 per reel

UC2843B

₹137.80 for 5 + GST

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Specifications

Quiescent Current: 13mA
Synchronous Rectifier: No
Operating Temperature: -25℃~+85℃
Frequency - Switching: 50kHz
Output Current: 1A
Voltage - Supply: 10V~30V
Features: Cycle-by-cycle current limiting;External compensation;Frequency synchronization
Output Type: Fixed
Output Voltage: 5V
Switch tube (built-in/external): External
Number of Channels: 1

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
Moisture sensitivity: MSL 1 (unlimited)
ECCN: EAR99
Packaging: Tape & Reel (TR)
Standard pack: 2,500 / Reel
Sold per: Piece
Minimum order: 5 (multiples of 5)
Unit weight: 0.176 g

Overview

2842, 2843, 2844, and 2845 are fixed-frequency current-mode PWM controllers designed for off-line and DC-DC converter applications with minimal external components. Internally implemented circuitry includes a trimmed oscillator for precise duty cycle control, a temperature-compensated reference, a high-gain error amplifier, a current-sensing comparator, and a high-current totem-pole output ideally suited for driving power MOSFETs. Protection features include built-in undervoltage lockout and current limiting. The 2842 and 2844 have UVLO thresholds of 16V (on) and 10V (off). The 2843 and 2845 have corresponding thresholds of 8.4V (on) and 7.6V (off). The 2842 and 2843 operate at up to 100% duty cycle. The 2844 and 2845 operate at up to 50% duty cycle. Startup current for this device family is typically 0.5mA.