AP3152FG-7 Equivalent & Substitute Parts

Part Overview

The AP3152FG-7 is a LED Driver IC with integrated 4-output DC DC regulator utilizing switched capacitor (charge pump) topology. Manufactured by Diodes Incorporated, this component is designed for backlight and camera flash applications with PWM dimming capability at 30mA per channel output. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain functional compatibility across power management, output configuration, and dimming control specifications.

Substiute Parts

AP3152FG-7

Diodes IncorporatedIn Stock: 190914AP3152FG-7 Datasheet

Current PartRFQ

A8519KLPTR-T

Allegro MicroSystemsIn Stock: 2031A8519KLPTR-T Datasheet

MFR RecommendedRFQ

LTC3217EUD#PBF

Analog Devices Inc.In Stock: 4217LTC3217EUD#PBF Datasheet

MFR RecommendedRFQ

MAX1573ETE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1210MAX1573ETE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the AP3152FG-7 is based on the following critical parameters: DC DC regulator topology (switched capacitor charge pump preferred for direct replacement), 4-output configuration, PWM dimming capability, supply voltage range compatibility (minimum 2.7V), and operating temperature range (-40°C to 85°C). Parts are grouped by topology alignment and functional equivalence.

Group 1: Direct Topology Match (Switched Capacitor Charge Pump)

• MAX1573ETE+ and LTC3217EUD#PBF maintain identical topology with PWM dimming
• Both support 4-output configuration and ROHS3 compliance
• Supply voltage ranges overlap with AP3152FG-7 specifications

Group 2: Alternative Topology (Step-Up Boost)

• A8519KLPTR-T uses step-up boost topology instead of charge pump
• Maintains 4-output configuration and PWM dimming with extended voltage range
• Represents functional alternative for applications requiring higher output voltage capability

Parameter Comparison

Engineering Selection Recommendations

MAX1573ETE+ (Preferred Direct Replacement) Select MAX1573ETE+ for applications requiring closest functional equivalence to AP3152FG-7. This part maintains identical topology (switched capacitor charge pump), matching supply voltage range (2.7V to 5.5V), identical operating temperature range (-40°C to 85°C), and PWM dimming control. Output current per channel (28mA) is within 7% of the original specification (30mA). ROHS3 compliance and MSL-1 rating match original specifications. Active product status ensures long-term availability. Package change from 12-UFDFN to 16-WQFN requires PCB layout modification.

LTC3217EUD#PBF (High Current Alternative) Select LTC3217EUD#PBF when higher output current per channel (150mA) is required within the same topology. This part maintains switched capacitor charge pump topology and PWM dimming. Supply voltage range (2.9V to 4.5V) is compatible with typical 3.3V and 5V systems. Active product status and ROHS3 compliance are confirmed. Operating temperature range matches original (-40°C to 85°C). MSL-1 rating provides unlimited shelf life. Package change to 16-WFQFN requires PCB layout modification.

A8519KLPTR-T (Extended Voltage Range Alternative) Select A8519KLPTR-T for applications requiring extended supply voltage range (4.5V to 40V) or higher output current per channel (100mA). This part uses step-up boost topology instead of charge pump, suitable for applications where output voltage exceeding input voltage is required. Automotive qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C) provide additional robustness. Active product status and ROHS3 compliance are confirmed. MSL-2 rating requires 1-year shelf life management. Package change to 20-TSSOP-EP requires significant PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can MAX1573ETE+ directly replace AP3152FG-7 without circuit modification? A: MAX1573ETE+ maintains functional equivalence in topology, supply voltage range, operating temperature, and dimming control. However, package change from 12-UFDFN to 16-WQFN requires PCB layout redesign. Output current per channel (28mA vs. 30mA) is within acceptable tolerance for most backlight applications. Circuit schematic review is recommended to confirm pin compatibility and signal routing.

Q: What is the key difference between LTC3217EUD#PBF and MAX1573ETE+? A: Both parts use identical switched capacitor charge pump topology and PWM dimming. Primary difference is output current per channel: LTC3217EUD#PBF provides 150mA versus MAX1573ETE+ at 28mA. LTC3217EUD#PBF supply voltage range (2.9V to 4.5V) is narrower than MAX1573ETE+ (2.7V to 5.5V). Select LTC3217EUD#PBF for high-current LED applications; select MAX1573ETE+ for lower-current or wider input voltage range requirements.

Q: Why does A8519KLPTR-T use different topology (step-up boost)? A: A8519KLPTR-T employs step-up boost topology to support extended supply voltage range (4.5V to 40V) and higher output voltage capability (40V). This topology is suitable for applications requiring output voltage higher than input voltage. Switched capacitor charge pump topology (used in AP3152FG-7, MAX1573ETE+, and LTC3217EUD#PBF) is optimized for lower voltage ranges and fixed voltage multiplication ratios. Topology selection depends on specific application voltage requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. AP3152FG-7, MAX1573ETE+, LTC3217EUD#PBF, and A8519KLPTR-T are all ROHS3 compliant. All parts are also REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: What is the impact of package changes on PCB design? A: AP3152FG-7 uses 12-UFDFN package. MAX1573ETE+ and LTC3217EUD#PBF use 16-pin QFN packages with different pin counts and footprints. A8519KLPTR-T uses 20-TSSOP package. Package changes require complete PCB footprint redesign, trace routing modification, and thermal management review. Pin function mapping must be verified before layout implementation.

Q: Which substitute part has the longest operating temperature range? A: A8519KLPTR-T supports -40°C to 125°C operating temperature range, extending 40°C above the original AP3152FG-7 specification (-40°C to 85°C). MAX1573ETE+ and LTC3217EUD#PBF match the original -40°C to 85°C range. Select A8519KLPTR-T for high-temperature industrial or automotive applications.

Q: What is MSL rating and why does it matter? A: Moisture Sensitivity Level (MSL) indicates maximum shelf life before component moisture absorption requires baking. AP3152FG-7, MAX1573ETE+, and LTC3217EUD#PBF have MSL-1 (unlimited shelf life). A8519KLPTR-T has MSL-2 (1-year shelf life). For long-term inventory management, prefer MSL-1 rated parts. MSL-2 parts require controlled storage conditions and baking before reflow soldering if shelf life is exceeded.