LCSC Electronics logoLCSC Electronics svg logo
Sign In
USD
Cart
TDSEMIC UC3845-TD product image
  • UC3845-TD thumbnail 1
  • UC3845-TD thumbnail 2
  • UC3845-TD thumbnail 3
  • Pinout
  • Footprint
Images for reference only

TDSEMIC UC3845-TDRoHS

Manufacturer
TDSEMICAsian Brands
MPN
UC3845-TD
LCSC Part #
C42422134
Packaging
SOP-8
Customer #
Key Attributes
Current-mode PWM controller
Datasheetpdf iconTDSEMIC UC3845-TD
In-Stock: 5,205
5,205 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
5+$ 0.0944$ 0.47
50+$ 0.083$ 4.15
150+$ 0.0774$ 11.61
500+$ 0.0731$ 36.55
2,500+$ 0.0697$ 174.25
5,000+$ 0.068$ 340.00
Standard Packaging2500/Full Reel
Better price for more quantity?
$

Products Specifications

Show similar products (0) >
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTDSEMIC
PackagingSOP-8
Operating Temperature0℃~+70℃@(TA)
Number of Outputs1
Frequency - Switching52kHz;100kHz~500kHz
FeaturesCycle-by-cycle current limiting;Overcurrent Protection
TopologyFlyback;Forward
Operating Voltage30V
Switch tube (built-in/external)External
Output Current1A
Quiescent Current12mA
Report an ErrorShow similar products (0) >

Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging2500
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