LCSC Electronics logoLCSC Electronics svg logo
Sign In
USD
Cart
TI UCC38C44DR product image
Images for reference only

TI UCC38C44DRRoHS

Manufacturer
TI
MPN
UCC38C44DR
LCSC Part #
C702450
Packaging
SOIC-8
Customer #
Key Attributes
UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller
Datasheetpdf iconTI UCC38C44DR
In-Stock: 53
53 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 0.9014$ 0.90
10+$ 0.7324$ 7.32
30+$ 0.6471$ 19.41
100+$ 0.5618$ 56.18
500+$ 0.5119$ 255.95
1,000+$ 0.4861$ 486.10
Standard Packaging2500/Full Reel
Better price for more quantity?
$

Products Specifications

Show similar products (0) >
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerTI
PackagingSOIC-8
Operating Temperature0℃~+85℃
Output Current200mA
FeaturesUnder-voltage lockout;Slope compensation;Under Voltage Protection;Over Current Protection
TopologyFlyback
Duty Cycle(Max)50%
Feedback SystemSecondary-Side Feedback
Working ModePWM Modulation;CCM
Frequency - Switching1MHz
Operating Voltage9V~18V
Output Voltage18V
Report an ErrorShow similar products (0) >

Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The UCCx8C4x series is a high-performance current-mode PWM controller. It is an enhanced BiCMOS version with pin-to-pin compatibility with the industry-standard UCx84xA series and UCx84x series PWM controllers. BiCMOS technology offers lower power consumption to improve efficiency and provides faster current sensing and oscillator frequency. Additionally, there are lower 7V start-up voltage versions, UCCx8C40 and UCCx8C41, for battery systems. The UCC28C4x series operates in a temperature range of –40°C to 125°C, and the UCC38C4x series operates in a temperature range of 0°C to 85°C. This series provides the necessary functions to control fixed-frequency, peak current-mode power supplies and offers the following performance advantages. The device supports high-frequency operation up to 1MHz, suitable for high-speed applications. Compared with the UCCx8C4x series, the trimmed discharge current allows for more precise programming of the maximum duty cycle and dead-time limits. Reducing the start-up and operating currents minimizes start-up losses and achieves the lowest possible operating power consumption, thereby improving efficiency. The device also features a fast 35ns current-sense-to-output delay time, providing excellent over-load protection for the power switch. It has a peak output current capability of ±1A and improved rise and fall times, enabling direct driving of large external MOSFETs. The UCCx8C4x series is available in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

Features

AI Translation
  • Enhanced drop-in replacement for UCx84x and UCx84xA series with pin-to-pin compatibility
  • Operating frequency: 1MHz max
  • 50μA startup current, 100μA max
  • Low operating current: 2.3mA (fOSC = 52kHz)
  • Fast cycle-by-cycle overcurrent limiting: 35ns
  • Peak drive current: ±1A; rail-to-rail output: 25ns rise time, 20ns fall time
  • 2.5V error amplifier reference with ±1% accuracy
  • Trimmed oscillator discharge current
  • UVLO protection
  • VSSOP-8 package minimizes board space

Applications

AI Translation
  • Switching mode power supplies
  • General-purpose single-ended DC/DC or offline isolated power converters
  • On-board power modules