BD6164GUT-E2 Equivalent & Substitute Parts

Part Overview

The BD6164GUT-E2 is a LED Driver IC manufactured by ROHM Semiconductor, classified as a Power Management PMIC. It functions as a single-output DC-DC regulator with Step-Up (Boost) topology, specifically designed for camera flash applications. The device operates with I2C dimming control and delivers 320mA flash current from a 2.7V to 4.5V supply, producing a 4.7V output. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Key Parameters

Parameter	Value
Manufacturer	ROHM Semiconductor
Part Number	BD6164GUT-E2
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Number of Outputs	1
Voltage Supply (Min)	2.7V
Voltage Supply (Max)	4.5V
Voltage Output	4.7V
Current Output / Channel	320mA (Flash)
Frequency	4MHz
Dimming Control	I2C
Applications	Camera Flash
Operating Temperature	-30°C ~ 85°C (TA)
Package / Case	6-WFBGA, CSPBGA
Supplier Device Package	6-VCSP60N1 (1.1x1.5)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the BD6164GUT-E2 are identified based on the following critical parameters that define functional equivalence:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Number of Outputs: Single output
Supply Voltage Range: Minimum 2.7V input capability
Output Current Capability: Minimum 320mA for flash applications
Dimming Control: I2C interface (preferred) or PWM alternative
Operating Temperature: Minimum -30°C to 85°C range
Product Status: Active
Compliance: ROHS3 Compliant, MSL 1

Substitute parts are grouped into two categories: parametric equivalents (identical specifications) and similar alternatives (compatible electrical performance with acceptable package and application variations).

Parameter Comparison

Parameter	BD6164GUT-E2	LM3556TME/NOPB	LM3565TLX/NOPB	LT3519EMS#TRPBF	LT3591EDDB#TRMPBF	AP5724FDCG-7
Manufacturer	ROHM	Texas Instruments	Texas Instruments	Analog Devices	Analog Devices	Diodes Inc.
Topology	Step-Up (Boost)	Step-Up (Boost)	Step-Up (Boost)	SEPIC, Step-Down, Step-Up	Step-Up (Boost)	Step-Up (Boost)
Supply Voltage Min	2.7V	2.5V	2.5V	3V	2.5V	2.7V
Supply Voltage Max	4.5V	5.5V	5.5V	30V	12V	5.5V
Output Current	320mA (Flash)	1.5A (Flash)	930mA (Flash)	750mA (Switch)	500mA (Switch)	750mA (Switch)
Frequency	4MHz	4MHz	4MHz	400kHz	1MHz	1.2MHz
Dimming Control	I2C	I2C	PWM	Analog, PWM	PWM	PWM
Operating Temp	-30°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-30°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 85°C (TJ)	-40°C ~ 85°C (TA)
Package	6-VCSP60N1	16-DSBGA	16-DSBGA	16-MSOP	8-DFN	6-UDFN
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
MSL Rating	1	1	1	1	1	1
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): The BD6164GUT-E2 is listed as its own parametric equivalent with identical electrical and mechanical specifications.

Primary Substitutes for Camera Flash Applications:

LM3556TME/NOPB (Texas Instruments) is the closest functional substitute. It maintains I2C dimming control, 4MHz operating frequency, and camera flash application focus. Output current capability is 1.5A (flash), exceeding the 320mA requirement. Supply voltage range (2.5V to 5.5V) encompasses the BD6164GUT-E2 specification. Operating temperature range (-40°C to 85°C) covers the required -30°C to 85°C window. Package is 16-DSBGA, requiring PCB layout modification. All compliance certifications (ROHS3, MSL 1) are equivalent.

LM3565TLX/NOPB (Texas Instruments) is suitable for camera flash applications with 930mA flash current capability and matching -30°C to 85°C operating temperature. Dimming control is PWM rather than I2C, requiring firmware adjustment. Operating frequency is 4MHz, matching the BD6164GUT-E2. Output voltage range (5.5V to 8.5V) differs from the 4.7V specification. Package is 16-DSBGA. Compliance ratings are equivalent.

Secondary Substitutes for Backlight/Lighting Applications:

LT3519EMS#TRPBF (Analog Devices) offers multi-topology capability (SEPIC, Step-Down, Step-Up) with 750mA switch current and extended supply voltage range (3V to 30V). Dimming supports both analog and PWM control. Operating temperature extends to 125°C (TJ). Package is 16-MSOP. Application focus is lighting rather than camera flash. Compliance ratings are equivalent.

LT3591EDDB#TRMPBF (Analog Devices) provides 500mA switch current with Step-Up topology. Supply voltage range (2.5V to 12V) is broader than required. PWM dimming control requires firmware modification. Operating frequency is 1MHz. Package is 8-DFN (3x2). Application focus is backlight. Compliance ratings are equivalent.

AP5724FDCG-7 (Diodes Incorporated) delivers 750mA switch current with Step-Up topology and 1.2MHz frequency. Supply voltage range (2.7V to 5.5V) aligns with BD6164GUT-E2. PWM dimming control is available. Operating temperature range (-40°C to 85°C) covers the requirement. Package is 6-UDFN, closest in size to the original. Application focus is backlight. Compliance ratings are equivalent.

Selection Basis: All substitute parts maintain active product status and ROHS3 compliance with MSL 1 rating. Substitution feasibility depends on application-specific requirements: I2C control availability, output current headroom, operating frequency tolerance, and package footprint compatibility. Camera flash applications prioritize LM3556TME/NOPB or LM3565TLX/NOPB. Backlight applications may utilize LT3591EDDB#TRMPBF or AP5724FDCG-7.

Frequently Asked Questions (FAQ)

Q: Can LM3556TME/NOPB directly replace BD6164GUT-E2 without firmware changes?

A: LM3556TME/NOPB maintains I2C dimming control and 4MHz frequency, enabling direct firmware compatibility. Package change from 6-VCSP60N1 to 16-DSBGA requires PCB layout modification. Electrical performance is compatible with higher current capability (1.5A vs. 320mA).

Q: What is the primary difference between LM3565TLX/NOPB and BD6164GUT-E2?

A: LM3565TLX/NOPB uses PWM dimming instead of I2C, requiring firmware redesign. Output voltage range (5.5V to 8.5V) differs from the 4.7V specification. Flash current capability (930mA) exceeds the requirement. Both maintain 4MHz frequency and -30°C to 85°C operating temperature.

Q: Is LT3519EMS#TRPBF suitable for camera flash applications?

A: LT3519EMS#TRPBF supports camera flash applications with 750mA switch current and analog/PWM dimming. Supply voltage range extends to 30V, providing broader compatibility. Operating temperature reaches 125°C (TJ). Application focus is lighting rather than dedicated camera flash, but electrical specifications are compatible.

Q: Why does AP5724FDCG-7 have a smaller package than other substitutes?

A: AP5724FDCG-7 uses 6-UDFN package, closest in footprint size to the original 6-VCSP60N1. This minimizes PCB layout changes. Trade-off is lower current capability (750mA switch vs. 320mA flash) and PWM-only dimming control. Suitable for space-constrained applications.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching BD6164GUT-E2 environmental certifications.

Q: What is the key parameter determining substitution feasibility?

A: Output current capability is the primary constraint. BD6164GUT-E2 requires 320mA flash current minimum. All listed substitutes exceed this requirement. Secondary constraints are dimming control method (I2C vs. PWM), operating frequency (4MHz preferred), and package compatibility with existing PCB layout.

Q: Can PWM-controlled substitutes replace I2C-controlled BD6164GUT-E2?

A: PWM substitutes (LM3565TLX/NOPB, LT3591EDDB#TRMPBF, AP5724FDCG-7) require firmware redesign to implement PWM dimming instead of I2C serial control. Electrical performance remains compatible. Integration effort depends on system architecture.

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