MP4033GK-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MP4033GK-Z is an LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device functions as a 1-output DC DC regulator with Flyback topology, designed for commercial and industrial lighting applications. It supports Analog, PWM, and TRIAC dimming modes and operates across a supply voltage range of 11V to 27V.

The MP4033GK-Z is currently in Active product status. Substitute parts become necessary when the Cut Tape (CT) & Digi-Reel® packaging is unavailable, when alternative topologies better suit specific application requirements, or when different thermal or frequency characteristics are required for system optimization.

Key Parameters

Parameter	Value
Manufacturer Part Number	MP4033GK-Z
Manufacturer	Monolithic Power Systems Inc.
Category	Power Management (PMIC)
Type	DC DC Regulator
Topology	Flyback
Number of Outputs	1
Voltage - Supply (Min)	11V
Voltage - Supply (Max)	27V
Dimming Modes	Analog, PWM, TRIAC
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the MP4033GK-Z is determined by the following critical parameters:

Primary Substitution Criteria:

DC DC Regulator type with single output
Dimming capability (Analog, PWM, or TRIAC modes)
Supply voltage compatibility within or overlapping the 11V–27V range
Surface mount packaging
Operating temperature range of -40°C to 125°C or better
ROHS3 compliance and MSL rating of 1 (Unlimited)

Topology Considerations: Substitute parts may employ different topologies (Flyback, Step-Down/Buck, Step-Up/Boost, or Switched Capacitor) provided they deliver equivalent functional performance for LED driver applications in commercial and industrial lighting.

Packaging Flexibility: While the main part uses 10-MSOP packaging, substitutes may use alternative surface mount packages (TSOT-23-5, TSOT-23-6, SOT-89-5, 8-TDFN) that accommodate the same functional requirements.

Parameter Comparison

Parameter	MP4033GK-Z	MP4033GK-P	CAV4201TD-GT3	MAX1577ZETA+T	MIC2289-24YD6-TR	RT8471GJ5	TS19376CY5 RMG
Manufacturer	MPS	MPS	onsemi	Analog Devices/Maxim	Microchip	Richtek	Taiwan Semiconductor
Type	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator	DC DC Regulator
Topology	Flyback	Flyback	Step-Down (Buck)	Switched Capacitor (Charge Pump)	Step-Up (Boost)	Step-Down (Buck)	Step-Down (Buck)
Number of Outputs	1	1	1	1	1	1	1
Voltage - Supply (Min)	11V	11V	6.5V	2.7V	2.5V	7V	8V
Voltage - Supply (Max)	27V	27V	36V	5.5V	10V	36V	32V
Dimming Modes	Analog, PWM, TRIAC	Analog, PWM, TRIAC	Analog	PWM	Analog, PWM	Analog, PWM	PWM
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	10-MSOP	10-MSOP	TSOT-23-5	8-TDFN (3x3)	TSOT-23-6	TSOT-23-5	SOT-89-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active	Last Time Buy	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: MP4033GK-P is the primary substitute for MP4033GK-Z. Both parts share identical electrical specifications (11V–27V supply, Flyback topology, Analog/PWM/TRIAC dimming, -40°C to 125°C operation) and package type (10-MSOP). The only difference is packaging format: MP4033GK-P uses Tape & Reel (TR) instead of Cut Tape (CT) & Digi-Reel®. Both maintain Active product status and ROHS3 compliance with MSL 1 (Unlimited).

Topology-Specific Alternatives: When Flyback topology is not required and alternative topologies are acceptable:

CAV4201TD-GT3 (onsemi): Step-Down (Buck) topology with 6.5V–36V supply range and Analog dimming. Currently in Last Time Buy status. Suitable for applications where Buck regulation is preferred over Flyback isolation.
RT8471GJ5 (Richtek): Step-Down (Buck) topology with 7V–36V supply range, 1A output current, and Analog/PWM dimming. Maintains Active status and automotive-grade qualification. MSL rating is 3 (168 Hours).
TS19376CY5 RMG (Taiwan Semiconductor): Step-Down (Buck) topology with 8V–32V supply range, 1A switch current, and PWM dimming. Active status with MSL 3 (168 Hours).
MIC2289-24YD6-TR (Microchip): Step-Up (Boost) topology with 2.5V–10V supply range, 750mA switch current, and Analog/PWM dimming. Suitable for low-voltage input applications requiring voltage step-up.

Limited Compatibility: MAX1577ZETA+T (Analog Devices/Maxim) operates at 2.7V–5.5V supply range with Switched Capacitor (Charge Pump) topology and PWM dimming only. This part is suitable only for low-voltage backlight and camera flash applications and is not recommended as a general substitute for the MP4033GK-Z in commercial and industrial lighting systems requiring 11V–27V input.

Frequently Asked Questions (FAQ)

Q: Can MP4033GK-P be used as a direct replacement for MP4033GK-Z? A: Yes. MP4033GK-P is a parametric equivalent with identical electrical and functional specifications. The only difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®). Both are Active status products with ROHS3 compliance and MSL 1 (Unlimited).

Q: What is the primary reason to substitute the MP4033GK-Z? A: Substitution is typically driven by packaging availability. MP4033GK-P offers the same functionality in Tape & Reel format. Alternative topologies (Buck, Boost, Charge Pump) may be selected when specific application requirements favor different regulation architectures.

Q: Are Buck topology parts (RT8471GJ5, TS19376CY5 RMG, CAV4201TD-GT3) suitable replacements? A: Buck topology parts can substitute the MP4033GK-Z in applications where isolated Flyback regulation is not required. All three maintain the 1-output, single-channel LED driver function with dimming capability. However, circuit design modifications may be necessary due to different topological requirements.

Q: What is the significance of MSL rating differences? A: MP4033GK-Z and MP4033GK-P have MSL 1 (Unlimited), meaning they tolerate unlimited moisture exposure before soldering. RT8471GJ5 and TS19376CY5 RMG have MSL 3 (168 Hours), requiring storage in dry conditions and limiting moisture exposure to 168 hours before reflow soldering. This affects supply chain handling and storage protocols.

Q: Why is MAX1577ZETA+T not recommended as a general substitute? A: MAX1577ZETA+T operates at 2.7V–5.5V supply voltage, which is incompatible with the MP4033GK-Z's 11V–27V requirement. This part is designed for low-voltage backlight and camera flash applications, not commercial and industrial lighting systems operating at higher voltages.

Q: Can I use MIC2289-24YD6-TR in place of MP4033GK-Z? A: MIC2289-24YD6-TR uses Step-Up (Boost) topology with 2.5V–10V input range, making it unsuitable for the MP4033GK-Z's 11V–27V supply specification. It is designed for low-voltage input applications requiring voltage step-up to 24V output.

Q: What packaging considerations apply when selecting substitutes? A: MP4033GK-Z uses 10-MSOP (0.118", 3.00mm width). Substitutes use different packages: MP4033GK-P (10-MSOP, identical), CAV4201TD-GT3 (TSOT-23-5), RT8471GJ5 (TSOT-23-5), TS19376CY5 RMG (SOT-89-5), MIC2289-24YD6-TR (TSOT-23-6), MAX1577ZETA+T (8-TDFN). PCB layout and footprint modifications are required for non-10-MSOP alternatives.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the MP4033GK-Z environmental certification requirements.

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