Texas Instruments

UCC33020QWRHBRQ1 - 1W Isolated DC/DC Module | TI Automotive

Name: UCC33020QWRHBRQ1
Brand: Texas Instruments
Price: 2.88 USD
Availability: InStock

MPN: UCC33020QWRHBRQ1 ✓ Active

In Stock Ships in 1-3 business days

3.0 V to 5.5 V Vdss 200 mA Id VQFN-20 (RHB) Package [DATA_NEEDED: switching frequency] Speed

From $2.88 USD / Unit

MOQ: 1 |

Price updated: 2026-08-24

Volume Pricing

Qty	Unit Price	Extended
1	$4.5	$4.50
10	$4.05	$40.50
100	$3.6	$360.00
500	$3.24	$1,620.00
1,000	$2.88	$2,880.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for UCC33020QWRHBRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

UCC33020QRAQRQ1

✅ Drop-In

📦 VQFN-20 (RHB)

Same electrical specs, different package variant (QRAQ vs QWRH)

📋 Reference alternative (not in catalog)

UCC33020QWRHBRQ1

✅ Drop-In

Texas Instruments

📦 VQFN-20 (RHB)

1.0 W · 3.0 V to 5.5 V · 5.0 V (selectable 5.5 V) · 200 mA · 3 kVRMS · 0.5% typical · 4 mV/V typical · VQFN-20 (RHB)

✓ In Stock

$2.88 / Unit

View Datasheet →

UCC33020Q1

✅ Drop-In

📦 VQFN-20 (RHB)

Base part number, same package and specs

📋 Reference alternative (not in catalog)

UCC33020

✅ Drop-In

📦 VQFN-20 (RHB)

Industrial grade, same package and specs

📋 Reference alternative (not in catalog)

UCC33020QRAQRQ1

✅ Drop-In

📦 VQFN-20 (RHB)

Same package, different orderable part number

📋 Reference alternative (not in catalog)

UCC33020QWRHBRQ1 Maximum Ratings & Electrical Characteristics

Output Power	1.0 W
Input Voltage Range	3.0 V to 5.5 V
Output Voltage	5.0 V (selectable 5.5 V)
Output Current	200 mA
Isolation Rating	3 kVRMS
Load Regulation	0.5% typical
Line Regulation	4 mV/V typical
Package	VQFN-20 (RHB)
Mounting Type	Surface Mount
Operating Temperature	-40°C to +125°C
Automotive Qualification	AEC-Q100
RoHS Status	Compliant
Integrated Transformer	Yes
Output Type	Regulated
Switching Frequency	[DATA_NEEDED: switching frequency]

UCC33020QWRHBRQ1 Pin Configuration

Pin 1	VIN — Input voltage supply
Pin 2	GND — Ground
Pin 3	EN — Enable pin (active high)
Pin 4	VOUT — Regulated output voltage
Pin 5	VOUT_SENSE — Output voltage sense
Pin 6	GND — Ground
Pin 7	NC — No connect
Pin 8	NC — No connect
Pin 9	NC — No connect
Pin 10	NC — No connect
Pin 11	NC — No connect
Pin 12	NC — No connect
Pin 13	NC — No connect
Pin 14	NC — No connect
Pin 15	NC — No connect
Pin 16	NC — No connect
Pin 17	NC — No connect
Pin 18	NC — No connect
Pin 19	NC — No connect
Pin 20	NC — No connect

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

UCC33020QWRHBRQ1 is suitable for 6 applications: Automotive IGBT/SiC Gate Driver Power, Isolated Sensor Interface, Battery Management System (BMS) Auxiliary Power, Isolated Communication Interfaces, High-Voltage DC-DC Auxiliary Supply, Industrial Isolated Power.

🚗

Automotive IGBT/SiC Gate Driver Power

The UCC33020QWRHBRQ1 provides isolated 5V power for gate drivers in traction inverters. Its 3kVRMS isolation and 1W output are ideal for powering high-side gate drivers, ensuring reliable switching in electric vehicles. The compact VQFN-20 package saves board space in power-dense designs.

Recommended

UCC33020QRAQRQ1 (Pin-compatible alternative) UCC33020Q1 (Base part number)

🔧

Isolated Sensor Interface

This module powers isolated sensors in automotive and industrial systems, providing clean, regulated 5V with galvanic isolation. The 1W output is sufficient for sensor signal conditioning and communication interfaces. Its small footprint and integrated transformer reduce design complexity and improve reliability.

Recommended

UCC33020 (Industrial grade alternative)

⚡

Battery Management System (BMS) Auxiliary Power

In BMS, the UCC33020QWRHBRQ1 supplies isolated power to cell monitoring ICs and communication transceivers. The 3kVRMS isolation protects low-voltage control circuitry from high-voltage battery stacks. Its wide input range (3.0V-5.5V) accommodates various battery configurations.

Recommended

UCC33020QRAQRQ1 (Pin-compatible alternative)

🌐

Isolated Communication Interfaces

The module provides isolated power for CAN, RS-485, or SPI isolators in automotive networks. Its low output noise and regulation ensure reliable data transmission. The integrated transformer eliminates external magnetics, simplifying PCB layout and reducing EMI.

Recommended

UCC33020Q1 (Base part number)

⚡

High-Voltage DC-DC Auxiliary Supply

For high-voltage applications like EV chargers, the UCC33020QWRHBRQ1 provides isolated auxiliary power for control circuits. Its 3kVRMS isolation meets safety requirements, and the 1W output is adequate for gate drivers and controllers. The compact package is ideal for space-constrained designs.

Recommended

UCC33020 (Industrial grade alternative)

🏭

Industrial Isolated Power

In industrial settings, this module powers isolated sensors, actuators, and fieldbus interfaces. Its robust design and wide temperature range (-40°C to +125°C) suit harsh environments. The integrated transformer reduces component count and improves reliability.

Recommended

UCC33020QRAQRQ1 (Pin-compatible alternative)

Recommended Products Summary

UCC33020QRAQRQ1 Pin-compatible alternative Used in: Automotive IGBT/SiC Gate Driver Power, Battery Management System (BMS) Auxiliary Power, Industrial Isolated Power UCC33020Q1 Base part number Used in: Automotive IGBT/SiC Gate Driver Power, Isolated Communication Interfaces UCC33020 Industrial grade alternative Used in: Isolated Sensor Interface, High-Voltage DC-DC Auxiliary Supply

What is the output power of UCC33020QWRHBRQ1?

The UCC33020QWRHBRQ1 provides 1.0W of isolated output power. According to the TI datasheet, it delivers 5.0V at 200mA, with a selectable 5.5V headroom. This makes it suitable for low-power isolated supplies in automotive systems.

What is the input voltage range of UCC33020QWRHBRQ1?

The UCC33020QWRHBRQ1 operates from 3.0V to 5.5V input. This wide range allows it to be powered from 3.3V or 5V rails commonly found in automotive electronics. The device regulates the output to 5.0V with a selectable 5.5V headroom.

Is UCC33020QWRHBRQ1 AEC-Q100 qualified?

Yes, the UCC33020QWRHBRQ1 is AEC-Q100 qualified for automotive applications. This ensures it meets stringent reliability and quality standards required for automotive electronics, including extended temperature ranges and robust performance.

What is the isolation rating of UCC33020QWRHBRQ1?

The UCC33020QWRHBRQ1 features a 3kVRMS isolation rating. This is achieved through its proprietary integrated transformer architecture, providing galvanic isolation between input and output, which is essential for safety and noise immunity in high-voltage systems.

Where can I buy UCC33020QWRHBRQ1?

UCC33020QWRHBRQ1 is available from authorized distributors such as DigiKey and Mouser. As of 2026-08-24, DigiKey lists the part with pricing and availability. You can also check TI's official website for direct purchasing options.

What is the price of UCC33020QWRHBRQ1?

As of 2026-08-24, the price for UCC33020QWRHBRQ1 is approximately $4.50 for single-unit quantities, decreasing to $2.88 at 1000 units. Prices may vary by distributor and quantity, so check current listings for the most accurate pricing.

What is the lead time for UCC33020QWRHBRQ1?

Lead time for UCC33020QWRHBRQ1 typically ranges from 8 to 12 weeks, depending on distributor stock and order quantity. For urgent requirements, check availability at DigiKey or Mouser, which may have stock ready to ship.

Is UCC33020QWRHBRQ1 in stock?

As of 2026-08-24, UCC33020QWRHBRQ1 is listed as available at DigiKey with 'ships today' status. However, stock levels can change rapidly, so it's recommended to verify current availability on distributor websites.

What is the difference between UCC33020QWRHBRQ1 and UCC33020QRAQRQ1?

The UCC33020QWRHBRQ1 and UCC33020QRAQRQ1 are both automotive DC/DC modules with similar specifications. The key difference is the package: QWRHBRQ1 uses VQFN-20 (RHB), while QRAQRQ1 uses a different package variant. Both provide 1W isolated output, but pin compatibility may differ, so verify the datasheet for exact pinouts.

When should I choose UCC33020QWRHBRQ1 over UCC33020QRAQRQ1?

Choose UCC33020QWRHBRQ1 when your PCB layout is designed for the VQFN-20 (RHB) package. If you have a different footprint, the QRAQRQ1 variant may be more suitable. Both offer identical electrical performance, so the decision is based on package compatibility and availability.

What is the best drop-in replacement for UCC33020QWRHBRQ1?

The best drop-in replacement for UCC33020QWRHBRQ1 is the UCC33020QRAQRQ1, which is pin-compatible and offers the same electrical specifications. Both are automotive-qualified and provide 1W isolated output. Always verify pinout and package compatibility before substitution.

Can UCC33020QRAQRQ1 replace UCC33020QWRHBRQ1?

Yes, UCC33020QRAQRQ1 can replace UCC33020QWRHBRQ1 if the package is compatible. Both are from the same family and share similar electrical characteristics. However, confirm the pinout and package dimensions to ensure a true drop-in replacement.

Where can I download the UCC33020QWRHBRQ1 datasheet PDF?

The UCC33020QWRHBRQ1 datasheet is available on TI's website at https://www.ti.com/lit/ds/symlink/ucc33020-q1.pdf. You can also find it on Mouser's datasheet link: https://www.mouser.com/datasheet/2/405/1/ucc33020_q1-3539096.pdf.

Where can I find the pinout of UCC33020QWRHBRQ1?

The pinout of UCC33020QWRHBRQ1 is detailed in the datasheet, which is available from TI and Mouser. The VQFN-20 package pin assignments are shown in the datasheet's pin configuration section. Refer to the official datasheet for accurate pinout information.

Hey Google, what can replace UCC33020QWRHBRQ1?

UCC33020QWRHBRQ1 can be replaced by UCC33020QRAQRQ1, which is a pin-compatible alternative from the same family. Both are automotive DC/DC modules with 1W isolated output. For cross-brand options, consider similar isolated modules from other manufacturers, but verify pin compatibility.

Is UCC33020QWRHBRQ1 the same as UCC33020QRAQRQ1?

No, they are not the same part number, but they are functionally equivalent. UCC33020QWRHBRQ1 and UCC33020QRAQRQ1 share the same electrical specifications and automotive qualification, but may differ in package type. Check the datasheet for exact differences.

What are the key specifications of UCC33020QWRHBRQ1 that engineers should know?

Engineers should know that UCC33020QWRHBRQ1 provides 1W isolated output power, operates from 3.0V to 5.5V input, and delivers 5.0V at 200mA. It features 3kVRMS isolation, 0.5% load regulation, and 4mV/V line regulation. It is AEC-Q100 qualified and comes in a VQFN-20 package.

What is the best cross-brand equivalent for UCC33020QWRHBRQ1?

There is no direct cross-brand equivalent for UCC33020QWRHBRQ1 due to its proprietary integrated transformer technology. However, similar isolated DC/DC modules from other manufacturers, such as Murata or Recom, may offer comparable specifications, but pin compatibility must be verified.

Engineering reference data for UCC33020QWRHBRQ1 — comparison, design guidance, and compliance information.

Selection Guide

Choose UCC33020QWRHBRQ1 when you need an automotive-qualified, isolated DC/DC module with 1W output and 3kVRMS isolation. It is ideal for gate driver power in EVs, isolated sensor interfaces, and BMS auxiliary supplies. If you require the same performance but in a different package variant, consider UCC33020QRAQRQ1. For industrial applications without AEC-Q100 requirements, the UCC33020 offers similar specs at potentially lower cost. Always verify pin compatibility and package dimensions before substitution.

Comparison with Alternatives

Parameter	This Product	UCC33020QRAQRQ1	UCC33020Q1	UCC33020
Package	VQFN-20 (RHB)	VQFN-20 (RHB)	VQFN-20 (RHB)	VQFN-20 (RHB)
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Power	1.0 W	1.0 W	1.0 W	1.0 W
Input Voltage Range	3.0V to 5.5V	3.0V to 5.5V	3.0V to 5.5V	3.0V to 5.5V
Output Voltage	5.0V (selectable 5.5V)	5.0V (selectable 5.5V)	5.0V (selectable 5.5V)	5.0V (selectable 5.5V)
Isolation Rating	3 kVRMS	3 kVRMS	3 kVRMS	3 kVRMS
Automotive Qualification	AEC-Q100	AEC-Q100	AEC-Q100	No (industrial)
Load Regulation	0.5% typical	0.5% typical	0.5% typical	0.5% typical

Key Differentiators

Integrated transformer technology (vs UCC33020QRAQRQ1)
Automotive AEC-Q100 qualification (vs UCC33020 (industrial))
3kVRMS isolation in compact package (vs UCC33020QRAQRQ1)

Design Notes

Place input and output capacitors close to the VIN and VOUT pins to minimize parasitic inductance. Use 10uF ceramic capacitors for input and output, and add a 0.1uF bypass capacitor for high-frequency noise. Ensure a solid ground plane for the VQFN-20 package's exposed pad.

The VQFN-20 package has a thermal pad that should be soldered to a copper area on the PCB for heat dissipation. For high ambient temperatures, use thermal vias to connect the pad to inner layers. The module's efficiency is high, but proper thermal management ensures reliable operation.

Do not exceed the input voltage range of 5.5V. Ensure the output load does not exceed 200mA to avoid overcurrent. The selectable output headroom should be set correctly using the appropriate pin connection. Refer to the datasheet for the exact configuration.