MP3307GJ-P LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP3307GJ-P is an active LED driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a Step-Up (Boost) DC-DC regulator with integrated PWM and analog dimming capabilities, designed for single-output LED driving applications. The part is ROHS3 compliant and maintains unlimited moisture sensitivity (MSL 1), making it suitable for industrial and consumer electronics requiring reliable LED control. Substitute parts are identified when equivalent electrical performance, supply voltage range, output current capability, and dimming control methods align with the original specification, enabling design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP3307GJ-P
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Step-Up (Boost)
Package / Case	SOT-23-8 Thin, TSOT-23-8
Voltage - Supply (Min)	2.7V
Voltage - Supply (Max)	5.5V
Current - Output / Channel	1.6A
Frequency	2.22MHz
Dimming	Analog, PWM
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the MP3307GJ-P are categorized based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

Topology: Step-Up (Boost) DC-DC Regulator
Supply Voltage Range: 2.7V to 5.5V input compatibility
Output Current Capability: Minimum 1.6A or higher
Dimming Control: Analog and/or PWM dimming support
Internal Switch: Integrated switching element required
Single Output Configuration
Surface Mount Technology
ROHS3 Compliance and MSL 1 rating

Substitution Categories:

Direct Parametric Equivalents maintain identical electrical specifications and package form factors, enabling pin-for-pin or functional replacement without circuit modification.

Manufacturer-Recommended Alternatives provide equivalent functional performance within the specified supply voltage and output current range but may differ in package type, dimming interface (I2C vs. PWM/Analog), or operating temperature range. These require design review for interface compatibility.

Extended-Range Alternatives support the required supply voltage window and output current but offer extended input voltage ranges or higher current ratings, suitable when additional design margin is required.

Parameter Comparison

Part Number	Manufacturer	Topology	Supply Min (V)	Supply Max (V)	Output Current	Dimming	Package	Frequency	Temp Range	MSL
MP3307GJ-P	Monolithic Power Systems Inc.	Step-Up (Boost)	2.7	5.5	1.6A	Analog, PWM	TSOT-23-8	2.22MHz	-40°C ~ 125°C (TJ)	1
MP3307GJ-Z	Monolithic Power Systems Inc.	Step-Up (Boost)	2.7	5.5	1.6A	Analog, PWM	TSOT-23-8	2.22MHz	-40°C ~ 125°C (TJ)	1
ADP1655ACBZ-R7	Analog Devices Inc.	Step-Up (Boost)	2.7	5.5	500mA (Flash)	I2C	12-WLCSP (1.5x2)	2MHz	-40°C ~ 85°C (TA)	1
AP3036BKTR-G1	Diodes Incorporated	Step-Up (Boost)	2.5	16	550mA (Switch)	PWM	SOT-23-6	1MHz	-40°C ~ 85°C (TA)	3
AP5726WG-7	Diodes Incorporated	Step-Up (Boost)	2.7	5.5	750mA (Switch)	PWM	SOT-23-6	1.2MHz	-40°C ~ 85°C (TA)	1
LED2001PUR	STMicroelectronics	Step-Down (Buck)	3	18	4A	PWM	8-VFQFPN (4x4)	850kHz	-40°C ~ 150°C (TJ)	1
LM3530UMX-40B/NOPB	Texas Instruments	Step-Up (Boost)	2.7	5.5	30mA	PWM	12-DSBGA	500kHz	-40°C ~ 85°C (TA)	1
LM3555TLE/NOPB	Texas Instruments	Step-Up (Boost)	2.5	5.5	500mA (Flash)	I2C	12-DSBGA	2MHz	-30°C ~ 85°C (TA)	1
LM3555TLX/NOPB	National Semiconductor	Step-Up (Boost)	2.5	5.5	500mA (Flash)	I2C	12-DSBGA	2MHz	-30°C ~ 85°C (TA)	1
LM3556TME/NOPB	Texas Instruments	Step-Up (Boost)	2.5	5.5	1.5A (Flash)	I2C	16-DSBGA	4MHz	-40°C ~ 85°C (TA)	1
LT3465ES6#TRPBF	Analog Devices Inc.	Step-Up (Boost)	2.7	16	225mA (Switch)	PWM	TSOT-23-6	1.2MHz	-40°C ~ 85°C (TA)	1

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent):

MP3307GJ-Z is a direct parametric equivalent to MP3307GJ-P, manufactured by the same supplier with identical electrical specifications, package configuration, and compliance certifications. This part maintains the same supply voltage range (2.7V–5.5V), output current (1.6A), dual dimming capability (Analog and PWM), and operating temperature range (-40°C to 125°C). Selection between MP3307GJ-P and MP3307GJ-Z is determined by inventory availability and packaging format (both Tape & Reel).

Manufacturer-Recommended Alternatives for Specific Applications:

ADP1655ACBZ-R7 (Analog Devices Inc.) and LM3555TLE/NOPB (Texas Instruments) are suitable for camera flash applications requiring I2C dimming control. Both maintain the 2.7V–5.5V supply range but deliver 500mA flash current and operate at reduced temperature ranges (-40°C to 85°C). These parts require I2C interface implementation in place of PWM/analog dimming.

LM3556TME/NOPB (Texas Instruments) provides 1.5A flash current capability within the 2.5V–5.5V supply window and supports I2C dimming, suitable for higher-current flash applications.

Extended-Range Alternatives:

AP3036BKTR-G1 (Diodes Incorporated) extends the input supply range to 2.5V–16V with 550mA switch current and PWM dimming. This part is suitable for designs requiring wider input voltage tolerance but operates at reduced temperature range (-40°C to 85°C) and higher moisture sensitivity (MSL 3).

AP5726WG-7 (Diodes Incorporated) maintains the 2.7V–5.5V supply range with 750mA switch current and PWM dimming in SOT-23-6 package, offering intermediate current capability between the MP3307GJ-P and higher-current alternatives.

LT3465ES6#TRPBF (Analog Devices Inc.) supports extended input voltage (2.7V–16V) with 225mA switch current and PWM dimming in TSOT-23-6 package, suitable for backlight applications requiring wider supply tolerance.

Topology Variation:

LED2001PUR (STMicroelectronics) employs Step-Down (Buck) topology instead of Step-Up (Boost), supporting 3V–18V input with 4A output current and PWM dimming. This part is suitable only for applications where the input voltage exceeds the desired output voltage and higher current delivery is required.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance. MSL 1 rating (unlimited moisture sensitivity) is standard across most alternatives, with the exception of AP3036BKTR-G1 (MSL 3, 168 hours). Operating temperature ranges vary; the MP3307GJ-P offers the highest junction temperature rating (-40°C to 125°C TJ), while most alternatives operate to -40°C to 85°C (TA).

Frequently Asked Questions (FAQ)

Q: Can MP3307GJ-Z replace MP3307GJ-P directly?

A: Yes. MP3307GJ-Z is a parametric equivalent with identical electrical specifications, package configuration (TSOT-23-8), supply voltage range (2.7V–5.5V), output current (1.6A), dimming capability (Analog and PWM), and compliance certifications. No circuit modification is required.

Q: What is the primary difference between the MP3307GJ-P and ADP1655ACBZ-R7?

A: The ADP1655ACBZ-R7 uses I2C dimming control instead of PWM/analog dimming, delivers 500mA flash current instead of 1.6A continuous current, and is packaged in 12-WLCSP (1.5x2) instead of TSOT-23-8. The supply voltage range (2.7V–5.5V) remains equivalent. I2C interface implementation is required for this substitute.

Q: Is LED2001PUR compatible with MP3307GJ-P applications?

A: LED2001PUR uses Step-Down (Buck) topology instead of Step-Up (Boost), requiring the input voltage to exceed the desired output voltage. This part is suitable only for applications where input voltage is higher than output voltage and 4A current delivery is required. Circuit topology modification is necessary.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. The component can be stored indefinitely under standard conditions without degradation. This is the most favorable moisture sensitivity rating for supply chain flexibility.

Q: Can I use AP3036BKTR-G1 in place of MP3307GJ-P?

A: AP3036BKTR-G1 supports the required 2.7V–5.5V supply range and provides PWM dimming, but delivers only 550mA switch current (versus 1.6A) and operates at MSL 3 (168-hour moisture sensitivity limit). This part is suitable only for lower-current applications and requires moisture bake-out management. Package differs (SOT-23-6 versus TSOT-23-8).

Q: What is the significance of operating temperature range differences?

A: MP3307GJ-P specifies -40°C to 125°C junction temperature (TJ), while most alternatives specify -40°C to 85°C ambient temperature (TA). The MP3307GJ-P provides higher thermal margin for continuous operation in elevated-temperature environments. Substitutes with lower temperature ratings may require thermal management review for high-power applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements equivalent to the MP3307GJ-P.

Q: What is the difference between PWM and I2C dimming control?

A: PWM (Pulse Width Modulation) and analog dimming use voltage or pulse-width signals for brightness control, typically implemented with simple GPIO or analog outputs. I2C dimming uses serial communication protocol for digital control, requiring I2C interface implementation. The MP3307GJ-P supports both PWM and analog dimming; I2C alternatives (ADP1655ACBZ-R7, LM3555 series, LM3556TME/NOPB) require I2C bus integration.

Q: Can I use LM3556TME/NOPB for continuous LED driving instead of flash applications?

A: LM3556TME/NOPB is specified for 1.5A flash current and I2C dimming control. While the device supports the 2.5V–5.5V supply range, its primary application is camera flash. Continuous operation capability and thermal performance for sustained 1.5A current delivery require design verification against the device datasheet.

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