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TDSEMIC UC3845AN-TDRoHS

Manufacturer
TDSEMICAsian Brands
MPN
UC3845AN-TD
LCSC Part #
C42422133
Packaging
DIP-8
Customer #
Key Attributes
Current-mode PWM controller
Datasheetpdf iconTDSEMIC UC3845AN-TD
In-Stock: 3,995
3,995 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.1476$ 0.74
50+$ 0.1293$ 6.47
150+$ 0.1214$ 18.21
500+$ 0.1116$ 55.80
2,500+$ 0.1073$ 268.25
5,000+$ 0.1047$ 523.50
Standard Packaging50/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTDSEMIC
PackagingDIP-8
Operating Temperature0℃~+70℃@(TA)
Frequency - Switching52kHz;100kHz~500kHz
Number of Outputs1
FeaturesCycle-by-cycle current limiting
Output TypeAdjustable
Operating Voltage7.6V~28V
Switch tube (built-in/external)External
Output Current200mA
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging50
Sales UnitPiece

Introduction

AI Translation

UC3845 is a high-performance fixed-frequency current-mode controller designed for isolated or DC-DC converter applications, offering designers a cost-effective solution with minimal external components. The circuit features an undervoltage lockout module with startup current less than 0.5mA, a precision reference voltage connected to the error amplifier input — trimmed for high accuracy. Additional internal blocks include logic circuitry for latched operation, current limiting, and a PWM comparator designed for high-current totem-pole output. This output structure is suitable for driving N-channel MOSFETs, with the output held low during shutdown.

Features

AI Translation
  • Optimized for isolated or DC/DC converters
  • Low startup current (<0.5mA)
  • Automatic feedforward compensation
  • Cycle-by-cycle current limiting
  • Enhanced load transient response
  • Undervoltage protection with hysteresis
  • Double pulse suppression
  • High-current totem-pole output
  • Internal trimmed bandgap reference
  • Operating frequency up to 500kHz

Applications

AI Translation
  • Power converters