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Request evaluation samplesUC3851DWTR PMIC - AC DC Converters, Offline Switchers by Texas Instruments
UC3851DWTR is a PMIC - AC DC Converters, Offline Switchers model from Texas Instruments, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Integrated Circuits (ICs) / PMIC - AC DC Converters, Offline Switchers product path. Known package information currently points to 18SOIC under the Texas Instruments brand listing. IC OFFLINE CTRLR PWM PROG 18SOIC. TrustCompo combines the available model, brand, hierarchy, and specification details around UC3851DWTR so buyers can move faster from review to quotation.
RoHS
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Documentation support
Pre-shipment inspection review
Key specifications
Series
-
Min Quantity
1
Category
Integrated Circuits (ICs)Sub Category
PMIC - AC DC Converters, Offline SwitchersDescription
IC OFFLINE CTRLR PWM PROG 18SOIC
key Attributes
-
Why request a quote
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Trust signals
Globally recognized certifications
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ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Ordering workflow
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2
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3
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Product overview
Overview
The UC3842 is available in an 8-Pin mini-DIP the necessary features to implement off-line, fixed-frequency current-mode control schemes with a minimal external parts count. This technique results in improved line regulation, enhanced load response characteristics, and a simpler, easier to design control loop. Topological advantages include inherent pulse-by-pulse current limiting.Protection circuitry includes built-in undervoltage lock-out and current limiting. Other features include fully-latched operation, a 1% trimmed bandgap reference, and start-up current less than 1mA.
These devices feature a totem-pole output designed to source and sink high peak current from a capacitive load, such as the gate of a power MOSFET. Consistent with N-channel power devices, the output is low in the OFF-state.
FEATURES
• Low start-up current (≤1mA)
• Automatic feed-forward compensation
• Pulse-by-pulse current limiting
• Enhanced load response characteristics
• Undervoltage lock-out with hysteresis
• Double pulse suppression
• High current totem-pole output
• Internally-trimmed bandgap reference
• 400kHz operation, guaranteed minAPPLICATIONS
• Off-line switched mode power supplies
• DC-to-DC converters UC3842
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Popular Specs Surfaced First
Export Classifications & Environmental
RoHS Status
ROHS3 Compliant
Export Classifications & Environmental
JESD-609 Code
e4
Export Classifications & Environmental
Moisture Sensitivity Level (MSL)
2 (1 Year)
Export Classifications & Environmental
ECCN Code
EAR99
Product Attribute
Part Status
Active
Product Attribute
Lead Free
Lead Free
RoHS Status
ROHS3 Compliant
JESD-609 Code
e4
Moisture Sensitivity Level (MSL)
2 (1 Year)
ECCN Code
EAR99
Part Status
Active
Lead Free
Lead Free
Lifecycle Status
ACTIVE (Last Updated: 3 days ago)
Mounting Type
Surface Mount
Factory Lead Time
6 Weeks
Packaging
Tape & Reel (TR)
Categories
Integrated Circuits (ICs)
Terminal Position
DUAL
Peak Reflow Temperature (Cel)
260
Terminal Form
GULL WING
Manufacturer
Texas
Operating Temperature
0°C~70°C TA
Technology
BICMOS
Subcategory
Switching Regulator or Controllers
Sub-Categories
PMIC - AC DC Converters, Offline Switchers
Package / Case
18-SOIC (0.295, 7.50mm Width)
Number Of Functions
1
Surface Mount
YES
Width
7.5mm
Pbfree Code
yes
Number Of Outputs
1
Number Of Terminations
18
Number Of Pins
18
Pin Count
18
Nominal Supply Current
15mA
Height
2.65mm
Output Current
400mA
Length
11.5mm
Output Voltage
40V
Data Rate (Max)
PULSE WIDTH MODULATION
Frequency
450kHz
Contents
50 ns
Serial Interfaces
BUCK-BOOST
ESD Protection
Boost, Buck, Flyback, Forward
Base Part Number
UC3851
Harmonic Distortion
1W
Power - Output
Current Limiting, Over Voltage
Additional Feature
CURRENT MODE OPERATION IS ALSO POSSIBLE
Manufacturer'S Part No.
UC3851DWTR
Terminal Finish
Nickel/Palladium/Gold (Ni/Pd/Au)
Analog IC - Other Type
SWITCHING CONTROLLER
Internal Switch(S)
No
Rise Time
50ns
Total Dose
2.35mm
Control Features
Frequency Control, Soft Start
Duty Cycle
50%
Voltage - Start Up
8V
RF Family\/Standard
20V
Function
VOLTAGE-MODE
Frequency - Switching
Up to 500kHz
Nominal Input Voltage
30V
Voltage - Supply (Vcc/Vdd)
7.8V~32V
Active Read Current - Max
Non-Isolated
Number Of Backplanes
46 %
Common questions
Product FAQ
Quick answers for buyers reviewing UC3851DWTR, stock, documentation, and sourcing steps.
What is UC3851DWTR?
UC3851DWTR is a PMIC - AC DC Converters, Offline Switchers component from Texas Instruments. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
What package and description are listed for UC3851DWTR?
UC3851DWTR is listed with package reference 18SOIC. The current product description is IC OFFLINE CTRLR PWM PROG 18SOIC, and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
Is UC3851DWTR available in stock?
This page currently shows 27436 units in stock and 12481 units available for UC3851DWTR. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for UC3851DWTR?
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for UC3851DWTR by Texas Instruments. The TrustCompo team can review price, availability, and documentation support.
Is a datasheet available for UC3851DWTR?
A dedicated datasheet link is not currently listed for UC3851DWTR by Texas Instruments. Contact us with the part number and required parameters so the team can help confirm documentation during quotation.
How should buyers verify UC3851DWTR before ordering?
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for UC3851DWTR before approving the order.
PMIC - AC DC Converters, Offline Switchers
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