UCD8220PWPRG4 Equivalent & Substitute Parts

Part Overview

The UCD8220PWPRG4 is a Full-Bridge, Half-Bridge, Push-Pull Regulator controller IC manufactured by Texas Instruments, designed for positive, isolation-capable output Step-Up/Step-Down DC-DC applications. This device functions as a transistor driver with integrated current limit control features and operates across a supply voltage range of 4.5V to 15.5V with switching frequencies up to 2MHz.

The UCD8220PWPRG4 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing system maintenance, design updates, and production continuity where this controller is specified in existing applications.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Type	Transistor Driver
Function	Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable
Topology	Full-Bridge, Half-Bridge, Push-Pull
Number of Outputs	2
Output Phases	1
Voltage - Supply (Vcc/Vdd)	4.5V ~ 15.5V
Frequency - Switching	Up to 2MHz
Control Features	Current Limit
Operating Temperature	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package / Case	16-PowerTSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution of the UCD8220PWPRG4 is determined by strict equivalence across the following critical parameters:

Identical output type (Transistor Driver)
Matching function (Step-Up/Step-Down)
Identical output configuration (Positive, Isolation Capable)
Matching topology (Full-Bridge, Half-Bridge, Push-Pull)
Identical number of outputs (2) and output phases (1)
Matching supply voltage range (4.5V ~ 15.5V)
Matching switching frequency capability (Up to 2MHz)
Identical control features (Current Limit)
Identical package type (16-PowerTSSOP)
Matching physical dimensions (0.173", 4.40mm Width)

The UCD8220QPWPRQ1 meets all substitution criteria as a direct equivalent. This part maintains identical electrical specifications and mechanical compatibility while offering active product status and automotive-grade qualification.

Parameter Comparison

Parameter	UCD8220PWPRG4	UCD8220QPWPRQ1
Manufacturer	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active
Output Type	Transistor Driver	Transistor Driver
Function	Step-Up/Step-Down	Step-Up/Step-Down
Output Configuration	Positive, Isolation Capable	Positive, Isolation Capable
Topology	Full-Bridge, Half-Bridge, Push-Pull	Full-Bridge, Half-Bridge, Push-Pull
Number of Outputs	2	2
Output Phases	1	1
Voltage - Supply (Vcc/Vdd)	4.5V ~ 15.5V	4.5V ~ 15.5V
Frequency - Switching	Up to 2MHz	Up to 2MHz
Control Features	Current Limit	Current Limit
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	16-PowerTSSOP (0.173", 4.40mm Width)	16-PowerTSSOP (0.173", 4.40mm Width)
Packaging Option	Bulk	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	3 (168 Hours)
Grade	Standard	Automotive
Qualification	None specified	AEC-Q100

Engineering Selection Recommendations

The UCD8220QPWPRQ1 is the direct substitute for the obsolete UCD8220PWPRG4. Both parts share identical electrical and mechanical specifications, ensuring functional compatibility in existing designs.

The UCD8220QPWPRQ1 offers the following advantages:

Active product status ensures long-term availability and supply chain continuity
Automotive-grade qualification (AEC-Q100) provides enhanced reliability documentation
Extended operating temperature range (-40°C ~ 125°C junction temperature versus -40°C ~ 105°C ambient) supports broader thermal environments
Tape & Reel packaging option supports high-volume production workflows

Selection between these parts depends on application requirements and supply chain strategy. For new designs or production transitions, the UCD8220QPWPRQ1 is the recommended choice due to its active status and automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can the UCD8220QPWPRQ1 directly replace the UCD8220PWPRG4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including output type, function, topology, supply voltage range, switching frequency, and package dimensions. Direct substitution is supported without design modification.

Q: What is the difference between the operating temperature ranges?

A: The UCD8220PWPRG4 specifies -40°C ~ 105°C ambient temperature (TA), while the UCD8220QPWPRQ1 specifies -40°C ~ 125°C junction temperature (TJ). The UCD8220QPWPRQ1 supports a wider thermal operating window, making it suitable for higher-temperature applications.

Q: Why is the UCD8220PWPRG4 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The UCD8220QPWPRQ1 is the active equivalent and is recommended for all new applications and production continuity.

Q: Are there packaging differences between these parts?

A: The UCD8220PWPRG4 is supplied in bulk packaging, while the UCD8220QPWPRQ1 is available in Tape & Reel (TR) format. Both use the identical 16-PowerTSSOP package. Tape & Reel packaging is standard for automated assembly processes.

Q: What does AEC-Q100 qualification mean?

A: AEC-Q100 is an automotive industry standard qualification that certifies component reliability under automotive operating conditions. The UCD8220QPWPRQ1 meets this qualification, providing documented reliability for automotive and high-reliability applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the UCD8220PWPRG4 and UCD8220QPWPRQ1 are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

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