TPS61050DRCT Equivalent & Substitute Parts

Part Overview

The TPS61050DRCT is a LED Driver IC manufactured by Texas Instruments, functioning as a 1-output DC-DC regulator with step-up (boost) topology and PWM dimming capability. Designed for camera flash applications, this device delivers 1.2A flash current from a 2.5V to 6V supply, producing 5.5V output at 2MHz switching frequency. The part carries Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for existing applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TPS61050DRCT
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage Supply (Min)	2.5V
Voltage Supply (Max)	6V
Voltage Output	5.5V
Current Output / Channel	1.2A (Flash)
Switching Frequency	2MHz
Dimming Method	PWM
Package / Case	10-VFDFN Exposed Pad
Operating Temperature	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts for the TPS61050DRCT are classified into two categories based on parametric equivalence and manufacturer recommendation status.

Parametric Equivalents share identical or near-identical electrical and mechanical specifications with the main part:

Supply voltage range: 2.5V to 6V
Output voltage: 5.5V
Output current: 1.2A (Flash)
Switching frequency: 2MHz
Dimming method: PWM
Package: 10-VFDFN Exposed Pad (10-VSON 3x3)
Operating temperature: -40°C ~ 85°C
RoHS3 compliance and MSL 2 rating

Manufacturer Recommended Alternatives provide functional equivalence for camera flash LED driver applications but may differ in one or more parameters such as supply voltage range, output current rating, dimming interface, package type, or frequency. These parts are suitable when design flexibility permits parameter variation within application requirements.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage (Min-Max)	Output Voltage	Output Current	Frequency	Dimming	Package	Status
TPS61050DRCT	Texas Instruments	2.5V - 6V	5.5V	1.2A (Flash)	2MHz	PWM	10-VFDFN	Last Time Buy
TPS61050DRCR	Texas Instruments	2.5V - 6V	5.5V	1.2A (Flash)	2MHz	PWM	10-VFDFN	Last Time Buy
TPS61052DRCR	Texas Instruments	2.5V - 6V	5.5V	1.2A (Flash)	2MHz	PWM	10-VFDFN	Last Time Buy
TPS61052DRCT	Texas Instruments	2.5V - 6V	5.5V	1.2A (Flash)	2MHz	PWM	10-VFDFN	Last Time Buy
ADP1650ACBZ-R7	Analog Devices Inc.	2.7V - 5V	4.575V - 5.425V	1.5A (Flash)	1.5MHz, 3MHz	I2C	12-WLCSP	Active
AP3019AKTR-G1	Diodes Incorporated	2.5V - 16V	Not Specified	550mA (Switch)	1.2MHz	PWM	SOT-23-6	Active
AP5725WG-7	Diodes Incorporated	2.7V - 5.5V	26V	750mA (Switch)	1.2MHz	PWM	SOT-23-6	Active
BD60910GU-E2	ROHM Semiconductor	2.7V - 5.5V	Not Specified	25.6mA	1MHz	PWM	24-VFBGA	Not For New Designs
ISL97634IRT18Z-T	Renesas Electronics	2.4V - 5.5V	Not Specified	50mA	1.45MHz	PWM	8-TDFN	Active
LT1937ES5#TRMPBF	Analog Devices Inc.	2.5V - 10V	36V	320mA (Switch)	1.2MHz	Analog, PWM	TSOT-23-5	Active
LT1937ESC6#TRMPBF	Analog Devices Inc.	2.5V - 10V	36V	320mA (Switch)	1.2MHz	Analog, PWM	SC-70-6	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution): TPS61050DRCR, TPS61052DRCR, and TPS61052DRCT are parametric equivalents of TPS61050DRCT. All three parts maintain identical electrical specifications (2.5V–6V supply, 5.5V output, 1.2A flash current, 2MHz frequency, PWM dimming) and package configuration (10-VFDFN). These parts carry Last Time Buy status and ROHS3 compliance. Selection among these equivalents depends on inventory availability and internal design documentation requirements.

Manufacturer Recommended Alternatives: For applications requiring active product status and extended lifecycle support, Analog Devices ADP1650ACBZ-R7 provides the closest functional match with higher output current capability (1.5A flash) and active product status. However, this part operates at a narrower supply voltage range (2.7V–5V) and uses I2C dimming instead of PWM, requiring design adaptation.

Diodes Incorporated AP3019AKTR-G1 and AP5725WG-7 offer PWM dimming and active status but with reduced output current ratings (550mA and 750mA respectively) and different package types. These are suitable only for lower-power LED driver applications.

Renesas ISL97634IRT18Z-T and Analog Devices LT1937 series (TSOT-23-5 and SC-70-6 packages) support active designs but with significantly lower output current (50mA and 320mA) and different topologies or package footprints, limiting direct substitution feasibility.

ROHM BD60910GU-E2 carries Not For New Designs status and is not recommended for new applications.

Compliance Considerations: All recommended parts maintain ROHS3 compliance and operate within the -40°C to 85°C temperature range. Moisture sensitivity levels vary; parametric equivalents maintain MSL 2 (1 Year), while active alternatives range from MSL 1 (Unlimited) to MSL 3 (168 Hours).

Frequently Asked Questions (FAQ)

Q: Can TPS61050DRCR, TPS61052DRCR, and TPS61052DRCT be used interchangeably with TPS61050DRCT? A: Yes. These three parts are parametric equivalents with identical electrical specifications, output ratings, frequency, dimming method, and package configuration. Substitution requires no circuit design changes. Verify internal part number documentation and PCB silkscreen markings to confirm compatibility with existing assembly processes.

Q: What is the primary difference between parametric equivalents and manufacturer recommended alternatives? A: Parametric equivalents maintain all critical electrical and mechanical specifications of the original part, enabling direct substitution without design modification. Manufacturer recommended alternatives provide functional equivalence for the LED driver application but differ in one or more parameters (supply voltage range, output current, dimming interface, package type, or frequency), requiring design review and potential circuit adaptation.

Q: Why does ADP1650ACBZ-R7 have higher output current (1.5A) but narrower supply voltage range (2.7V–5V)? A: The ADP1650ACBZ-R7 is optimized for different application requirements. The narrower supply voltage range reflects its design for systems with tighter input regulation, while the higher flash current supports more demanding LED brightness requirements. Design verification is necessary to confirm compatibility with your specific power supply and LED specifications.

Q: Is the LT1937 series suitable as a direct replacement? A: The LT1937 series (TSOT-23-5 and SC-70-6 packages) is not a direct replacement. While it supports step-up boost topology and PWM dimming, the output current rating (320mA switch current) is significantly lower than the TPS61050DRCT (1.2A flash current), and the package footprint differs. This part is suitable only for lower-power backlight applications, not camera flash.

Q: What packaging considerations apply when selecting a substitute? A: The TPS61050DRCT uses 10-VFDFN (10-VSON 3x3) package. Parametric equivalents maintain this package, enabling direct PCB reuse. Alternative parts use different packages (SOT-23-6, TSOT-23-5, SC-70-6, 12-WLCSP, 8-TDFN, 24-VFBGA), requiring PCB redesign, new footprint layout, and assembly process validation. Package selection impacts thermal performance, board space, and manufacturing compatibility.

Q: Should I consider parts with Last Time Buy status for new designs? A: No. Last Time Buy status indicates end-of-life production with no future availability. For new designs, select from active product status alternatives such as ADP1650ACBZ-R7, AP3019AKTR-G1, AP5725WG-7, ISL97634IRT18Z-T, or LT1937 series. For existing production requiring TPS61050DRCT equivalents, parametric alternatives (TPS61050DRCR, TPS61052DRCR, TPS61052DRCT) provide the most direct path while Last Time Buy inventory remains available.

Q: How do I verify moisture sensitivity level (MSL) compatibility? A: MSL ratings define storage and handling requirements. TPS61050DRCT carries MSL 2 (1 Year), requiring storage below 30°C and 60% relative humidity. Parametric equivalents maintain MSL 2. Active alternatives vary: ADP1650ACBZ-R7 is MSL 1 (Unlimited), while AP3019AKTR-G1 is MSL 3 (168 Hours). Confirm your supply chain storage conditions and component shelf-life requirements before selection.

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