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HomeProductsIntegrated Circuits (ICs)PMIC - AC DC Converters, Offline SwitchersUCC2804QDRQ1
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UCC2804QDRQ1 - Texas Instruments

Manufacturer Part Number
UCC2804QDRQ1
Manufacturer
Texas Instruments
Allelco Part Number
32D-UCC2804QDRQ1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
26,020 pcs available, New & Original
Parts Description
IC OFFLINE SWITCH MULT TOP 8SOIC
Package
8-SOIC
Data sheet
UCC2804QDRQ1.pdf

PCN Packaging

2.73KHz.pdf

HTML Datasheet

UCC2800 - 05-Q1.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 26020
  • Unit Price: $1.478
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.478 $1.48
10+ $1.444 $14.44
30+ $1.42 $42.60
100+ $1.397 $139.70
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

UCC2804QDRQ1 Tech Specifications
Texas Instruments - UCC2804QDRQ1 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - UCC2804QDRQ1

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply (Vcc/Vdd) 8.3V ~ 12V
Voltage - Start Up 12.5 V
Voltage - Breakdown -
Topology Boost, Flyback, Forward
Supplier Device Package 8-SOIC
Series Automotive, AEC-Q100
Package / Case 8-SOIC (0.154', 3.90mm Width)
Package Tape & Reel (TR)
Product Attribute Attribute Value
Output Isolation -
Operating Temperature -40°C ~ 125°C (TA)
Mounting Type Surface Mount
Internal Switch(s) No
Frequency - Switching Up to 1MHz
Fault Protection Current Limiting
Duty Cycle 49%
Control Features Frequency Control
Base Product Number UCC2804

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

UCC2804QDRQ1 Image
UCC2804QDRQ1 (1)

Manufacturer Part Number

UCC2804QDRQ1

Manufacturer

Texas Instruments

Introduction

The UCC2804QDRQ1 is a low-power, high-performance current mode pulse width modulation (PWM) controller designed for a wide range of power supply applications.

Product Features and Performance

High-efficiency power conversion

Low power operation with 500 µA supply current

Wide input voltage range of -0.3V to 6.3V

Supply voltage range from 8.3V to 11V

Operating temperature from -40°C to 125°C

Current mode control for improved transient response

Frequency jittering for lower EMI

Automatic feed-forward compensation

Under-voltage lockout with hysteresis

Optimized for automotive applications

Product Advantages

Enhanced power efficiency for automotive electronics

Robust temperature range catering to harsh environments

Meeting AEC-Q100 requirements for automotive quality and reliability

Surface mount form factor for space-saving design

Automotive grade product ensures high reliability

Key Technical Parameters

Input Voltage: -0.3V to 6.3V

Supply Voltage: 8.3V to 11V

Current - Supply: 500 µA

Operating Temperature: -40°C to 125°C

Package: 8-SOIC

Mounting Type: Surface Mount

Quality and Safety Features

AEC-Q100 qualified

Automotive-grade reliability

Under-voltage lockout with hysteresis

Thermal shutdown protection

Compatibility

Suitable for a wide range of PWM-based power supply designs

Compatible with various types of power transistors

Application Areas

Automotive systems

DC-DC converters

Battery chargers

Power supplies for telecom and industrial use

Product Lifecycle

Active product status indicates ongoing manufacture and availability

Not nearing discontinuation at the time of knowledge cutoff

Replacement or upgrade paths may be available as technology evolves

Several Key Reasons to Choose This Product

Efficient power management suitable for automotive applications

AEC-Q100 qualification ensures reliability and industry compliance

Low supply current for energy-sensitive applications

Supports a broad range of input and supply voltages for design flexibility

Current mode control provides fast response to load changes

Frequency jittering minimizes electromagnetic interference

Thermal shutdown and under-voltage lockout enhance safety

Surface mount package compatible with modern PCB manufacturing

Frequently Asked Questions(FAQ)

What is the recommended operating supply voltage range for the UCC2804QDRQ1, and how does this affect system design constraints in automotive environments?
The UCC2804QDRQ1 operates with a supply voltage between 8.3V and 11V, which aligns with typical automotive battery systems that experience voltage fluctuations due to load transients or cold cranking conditions. This narrow range requires careful selection of input filtering and regulation circuitry to ensure stable operation across varying ambient temperatures and electrical noise conditions common in vehicle applications.
How does the UCC2804QDRQ1’s quiescent current of 500 µA influence efficiency in low-power offline switching designs?
With a quiescent current of 500 µA, the UCC2804QDRQ1 introduces a fixed power loss of approximately 5 mW at full supply voltage, which becomes significant in energy-harvesting or standby-mode applications where total system consumption must remain below 10–20 mW. While acceptable for many offline converters, this level may necessitate trade-offs in control loop optimization or burst-mode operation to maintain overall efficiency under light-load conditions.
Can the UCC2804QDRQ1 be used in non-automotive applications despite being AEC-Q100 qualified?
Although the UCC2804QDRQ1 meets AEC-Q100 Grade 1 requirements (-40°C to 125°C operation), its qualification primarily ensures reliability under automotive stress conditions such as thermal cycling and humidity exposure. It can technically function outside automotive use cases—such as industrial or commercial power supplies—provided environmental and electrical stresses do not exceed specified limits, but without guaranteed long-term robustness under those conditions.
What are the key differences between the UCC2804QDRQ1 and alternative controllers like the ISL6843IBZ-T when designing an offline flyback converter?
Unlike the ISL6843IBZ-T, which integrates secondary-side regulation feedback using optocoupler-free techniques, the UCC2804QDRQ1 operates on primary-side sensing only. This means the UCC2804QDRQ1 relies on accurate turns ratio assumptions and fixed output voltage programming, whereas the ISL6843IBZ-T dynamically adjusts based on real-time output measurement, offering better line/load regulation accuracy at the cost of increased circuit complexity.
How should thermal management be approached when deploying the UCC2804QDRQ1 in compact PCB layouts?
Given its 8-SOIC package and surface-mount orientation, the UCC2804QDRQ1 dissipates minimal heat due to low internal power loss (typically <100 mW), but layout parasitics near high dv/dt nodes can induce localized heating. Maintaining adequate ground plane clearance around switching loops and ensuring solder joints are free of voids helps prevent unintended thermal hotspots during sustained operation.
Is it feasible to cascade multiple UCC2804QDRQ1 units in a multi-output offline power supply design?
Cascading the UCC2804QDRQ1 is generally impractical due to its single-switch topology and lack of interstage communication features. Each controller manages one independent winding, so attempting synchronization would require external timing logic and could lead to instability or EMI issues. Instead, separate isolated topologies or dedicated multi-output ICs are preferred for multi-rail applications.
How does the UCC2804QDRQ1 compare to the SG2845DM in terms of startup performance and fault recovery?
The SG2845DM typically offers faster startup due to lower internal bias current and simpler compensation networks, making it suitable for applications requiring rapid transient response. In contrast, the UCC2804QDRQ1 provides more robust protection features and programmable soft-start behavior, which improves reliability during repeated brown-out events but may result in slower initial ramp-up time.
What impact does the UCC2804QDRQ1’s input voltage range (-0.3V to 6.3V) have on rectifier diode selection in a universal AC input offline stage?
The negative input tolerance down to -0.3V allows the UCC2804QDRQ1 to withstand reverse polarity transients from bulk capacitor discharge during turn-off events, but the maximum absolute input of 6.3V restricts direct connection to unregulated bridge outputs. Therefore, designers often insert a series resistor or use a pre-regulator to limit peak input excursions before reaching the IC, protecting internal ESD structures.
Are there known limitations when using the UCC2804QDRQ1 with wide input voltage ranges such as 90VAC to 264VAC?
Yes; while the UCC2804QDRQ1 itself doesn’t regulate input voltage, the 8.3V–11V supply requirement implies the need for an auxiliary winding or separate bias converter to generate this voltage. Without proper decoupling and filtering, high-voltage transients from rectified AC mains can couple into the supply rail, causing false shutdowns or erratic behavior—especially during inrush current surges.
How does the Moisture Sensitivity Level (MSL) rating of MSL 1 affect handling and storage practices for the UCC2804QDRQ1?
With an MSL 1 rating, the UCC2804QDRQ1 has unlimited shelf life and no special drying requirements before reflow soldering. However, it must still be handled per standard IPC Class 3 standards to avoid electrostatic discharge damage, particularly given its sensitive analog control circuitry and high-impedance nodes susceptible to latchup if exposed to static charges above 100V HBM.
What considerations apply when substituting the UCC2804QDRQ1 with the MIC38C44AYM in a synchronous rectification configuration?
The MIC38C44AYM is a voltage regulator controller optimized for DC-DC buck applications, lacking the high-voltage startup and burst-mode capabilities required by offline switcher topologies. Substituting it directly into an offline design would render it incapable of driving the primary switch through bootstrap mechanisms or handling transformer reset conditions, making it unsuitable for replacement.
How does the UCC2804QDRQ1 support compliance with international safety standards like IEC 61000-3-2 for harmonic distortion?
As a PWM controller, the UCC2804QDRQ1 enables implementation of active power factor correction (PFC) through external circuitry, allowing control algorithms to shape input current waveform and meet harmonic limits. However, achieving full compliance requires additional components such as boost inductors, fast diodes, and precise timing control beyond what the IC alone provides.
What role does the base product number UCC2804 play in identifying compatible evaluation boards or reference designs?
The base product number UCC2804 indicates shared core architecture across variants, meaning evaluation modules designed for UCC2804QDRQ1 typically support other UCC2804-based parts with minor pin-compatible changes. This simplifies prototyping and accelerates design validation, provided the specific variant’s electrical characteristics (e.g., protection thresholds) align with application needs.
How does the operating temperature range (-40°C to 125°C) influence component derating strategies in harsh environments?
Operating up to 125°C TA demands careful derating of passive components near the UCC2804QDRQ1, especially capacitors whose capacitance drops significantly at elevated temperatures. Additionally, trace resistance increases with temperature, potentially affecting feedback divider accuracy and loop stability—factors that must be accounted for in closed-loop simulations to maintain phase margin across the full temperature span.
Can the UCC2804QDRQ1 operate reliably in systems with frequent load disconnects, such as diagnostic tools or test equipment?
Yes, provided the supply rail remains within 8.3V–11V during disconnection events. The IC’s internal undervoltage lockout (UVLO) resets cleanly when supply dips below 8.3V, enabling automatic restart once voltage recovers. However, prolonged operation below minimum threshold may cause cumulative stress on internal charge pumps, reducing MTBF unless input filtering mitigates voltage sag duration.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments UCC2804QDRQ1

Product Attribute UCC2804QDREP UCC2804DTR/81260G4 UCC2804DTRG4 UCC2804PWTRG4
Part Number UCC2804QDREP UCC2804DTR/81260G4 UCC2804DTRG4 UCC2804PWTRG4
Manufacturer Texas Instruments Texas Instruments Texas Instruments Luminary Micro / Texas Instruments
Series - - - -
Output Isolation - - - -
Fault Protection - - - -
Voltage - Breakdown - - - -
Control Features - - - -
Topology - - - -
Internal Switch(s) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Duty Cycle - - - -
Frequency - Switching - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply (Vcc/Vdd) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Start Up - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

UCC2804QDRQ1 Datasheet PDF

Download UCC2804QDRQ1 pdf datasheets and Texas Instruments documentation for UCC2804QDRQ1 - Texas Instruments.

PCN Packaging
2.73KHz.pdf
PCN Design/Specification
Design 25/Feb/2022.pdf UCC280y 27/Jul/2020.pdf
HTML Datasheet
UCC2800 - 05-Q1.pdf
PCN Assembly/Origin
2.73KHz.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Brazil 7
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United Kingdom 4
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New Zealand 5
Asia India 4
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Middle East Israel 6
DHL & FedEx Shipment Charges Reference
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0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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UCC2804QDRQ1 Image

UCC2804QDRQ1

Texas Instruments
32D-UCC2804QDRQ1

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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