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UTC UC2843BG-S08-R product image
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UTC UC2843BG-S08-RRoHS

Manufacturer
UTCAsian Brands
MPN
UC2843BG-S08-R
LCSC Part #
C2978931
Packaging
SOP-8
Customer #
Key Attributes
High-Performance Current-Mode PWM Controllers
Datasheetpdf iconUTC UC2843BG-S08-R
In-Stock: 635
635 In stock, ships now
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QtyUnit PriceTotal Amount
5+$ 0.247$ 1.24
50+$ 0.1899$ 9.50
150+$ 0.1655$ 24.83
500+$ 0.135$ 67.50
2,500+$ 0.1214$ 303.50
5,000+$ 0.1132$ 566.00
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerUTC
PackagingSOP-8
Operating Temperature-40℃~+85℃
FunctionStep-down type
Number of Outputs1
Frequency - Switching100kHz
FeaturesCycle-by-cycle current limiting
Output Type-
TopologyBuck
Operating Voltage0V~30V
Switch tube (built-in/external)External
Output Voltage-
Output Current200mA
Quiescent Current11mA
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

UTC UC2843B provides an offline or DC-DC fixed-frequency current-mode control design with minimal external components. Internally implemented circuitry includes undervoltage lockout (UVLO) and a high-precision reference voltage at the error amplifier input. UTC UC2843B also incorporates internal circuitry consisting of a PWM comparator for current-limiting control, logic to ensure latching operation, and a totem-pole output stage designed to source or sink high peak currents. The output stage is low during shutdown, making it suitable for driving N-channel MOSFETs.

UTC UC2843B offers additional advantages: startup current below 0.5mA, with the oscillator discharge current specified at 8.3mA (typical). Under UVLO conditions, the maximum output saturation voltage is 1.2V when sinking 10mA at Vcc=5V. UTC UC2843B has typical UVLO thresholds of 8.4V (turn-on) and 7.6V (turn-off), and is capable of operating at duty cycles approaching 100%.

Features

AI Translation
  • Current mode operation: 500 kHz
  • Low startup current <0.5 mA
  • Latched PWM for cycle-by-cycle current limiting
  • Trimmed oscillator discharge current
  • Automatic feed-forward compensation
  • Internally trimmed reference voltage with UVLO
  • High-current totem-pole output UVLO with hysteresis
  • Double pulse suppression