SSL3252UK/C2,515 LED Driver IC Equivalent & Substitute Parts

Part Overview

The SSL3252UK/C2,515 is an LED Driver IC manufactured by NXP USA Inc., classified as a Power Management (PMIC) component designed for photo flash applications. This part is currently obsolete, making identification of functionally equivalent substitutes essential for ongoing design support, maintenance, and production continuity. The device operates as an uncased LED driver with output dimming capability, originally supplied in Tape & Reel packaging with 1071 units in current inventory.

Key Parameters

Parameter	Value
Manufacturer	NXP USA Inc.
Part Number	SSL3252UK/C2,515
Category	Power Management (PMIC)
Product Type	LED Driver IC
Application	Photo Flash
Packaging	Tape & Reel (TR)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS Code	8542.39.0001

Substitute Part Grouping Explanation

Substitution of the SSL3252UK/C2,515 is determined by the following critical parameters:

Primary Substitution Criteria:

Device Type: LED Driver IC with DC DC Regulator topology
Application Compatibility: Photo flash or camera flash operation
Dimming Control Method: I2C or PWM capability
Output Current Rating: Minimum 1.5A (Flash) for primary flash applications
Supply Voltage Range: Compatibility with 2.5V to 5.5V input
Topology: Step-Up (Boost) or equivalent voltage conversion
Packaging: Surface Mount variants (LFCSP, DSBGA, TSOT-23, SOT-23, SOIC)
Compliance: ROHS3 compliant, REACH unaffected

Secondary Compatibility Factors:

Operating Temperature Range: -40°C to 85°C minimum
Frequency: 1MHz to 4MHz switching frequency
Internal Switch Integration: Required
Number of Outputs: Single output configuration

Substitute parts are grouped into two primary categories: active production parts with I2C dimming for direct flash applications, and active production parts with PWM dimming for backlight and general LED driver applications.

Parameter Comparison

Part Number	Manufacturer	Type	Topology	Dimming	Output Current	Supply Voltage (Min-Max)	Package	Status	MSL
SSL3252UK/C2,515	NXP USA Inc.	LED Driver IC	Step-Up (Boost)	Output Dimming	Not Specified	Not Specified	TR	Obsolete	3
ADP1650ACPZ-R7	Analog Devices Inc.	LED Driver IC / DC DC Regulator	Step-Up (Boost)	I2C	1.5A (Flash)	2.7V - 5V	10-LFCSP-WD (3x3)	Active	3
AP5725WUG-7	Diodes Incorporated	LED Driver IC / DC DC Regulator	Step-Up (Boost)	PWM	750mA (Switch)	2.7V - 5.5V	TSOT-23-6	Active	1
ILD6150XUMA1	Infineon Technologies	LED Driver IC / DC DC Regulator	Step-Down (Buck)	Analog, PWM	1.5A	4.5V - 60V	8-SOIC (0.154", 3.90mm)	Active	3
ISL97634IRT18Z-TK	Renesas Electronics Corporation	LED Driver IC / DC DC Regulator	SEPIC, Step-Up (Boost)	PWM	50mA	2.4V - 5.5V	8-TDFN (2x3)	Active	3
LM3530TMX-40/NOPB	Texas Instruments	LED Driver IC / DC DC Regulator	Step-Up (Boost)	PWM	30mA	2.7V - 5.5V	12-DSBGA	Active	1
LM3556TME/NOPB	Texas Instruments	LED Driver IC / DC DC Regulator	Step-Up (Boost)	I2C	1.5A (Flash)	2.5V - 5.5V	16-DSBGA	Active	1
LM3642TLE/NOPB	Texas Instruments	LED Driver IC / DC DC Regulator	Step-Up (Boost)	I2C	1.5A (Flash)	2.5V - 5.5V	9-DSBGA (1.6x1.6)	Active	1
LT1937ES5#TRPBF	Analog Devices Inc.	LED Driver IC / DC DC Regulator	Step-Up (Boost)	Analog, PWM	320mA (Switch)	2.5V - 10V	TSOT-23-5	Active	1
LT1937ESC6#TRPBF	Analog Devices Inc.	LED Driver IC / DC DC Regulator	Step-Up (Boost)	Analog, PWM	320mA (Switch)	2.5V - 10V	SC-70-6	Active	1
LTC3490ES8#PBF	Analog Devices Inc.	LED Driver IC / DC DC Regulator	Step-Up (Boost)	Analog	350mA	1V - 3.2V	8-SOIC (0.154", 3.90mm)	Active	1

Engineering Selection Recommendations

Primary Substitutes for Camera Flash Applications:

The ADP1650ACPZ-R7 (Analog Devices Inc.) and LM3642TLE/NOPB (Texas Instruments) represent the most direct functional equivalents for SSL3252UK/C2,515 replacement in photo flash circuits. Both devices feature:

I2C dimming control matching the original output dimming capability
1.5A flash output current specification
Step-Up (Boost) topology for voltage conversion
Active product status with full manufacturing support
ROHS3 compliance and MSL ratings suitable for production environments
Operating temperature range of -40°C to 85°C

The LM3642TLE/NOPB offers superior inventory availability (15,335 units) and MSL-1 rating, providing extended moisture tolerance. The ADP1650ACPZ-R7 provides comparable performance with 2,600 units in stock.

Secondary Substitutes for Backlight and General LED Driver Applications:

For applications where flash-specific current ratings are not required, the LT1937ES5#TRPBF and LT1937ESC6#TRPBF (Analog Devices Inc.) offer compact packaging with analog and PWM dimming flexibility. The LM3530TMX-40/NOPB (Texas Instruments) provides PWM dimming in a 12-DSBGA package with MSL-1 rating.

Compliance and Regulatory Alignment:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity with the original SSL3252UK/C2,515 specification. ECCN classification remains EAR99 across all alternatives, with HTSUS code 8542.39.0001 consistent throughout the substitute family.

Frequently Asked Questions (FAQ)

Q: Can the ADP1650ACPZ-R7 directly replace the SSL3252UK/C2,515 in existing photo flash designs?

A: The ADP1650ACPZ-R7 provides functional equivalence for I2C-controlled LED driver applications with 1.5A flash output capability. However, package differences (10-LFCSP-WD versus original TR packaging) require PCB layout verification. Supply voltage range (2.7V to 5V) must be confirmed against your circuit requirements.

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

A: I2C dimming (ADP1650ACPZ-R7, LM3556TME/NOPB, LM3642TLE/NOPB) provides digital control via I2C protocol, suitable for microcontroller-based flash management. PWM dimming (AP5725WUG-7, LT1937 series, LM3530TMX-40/NOPB) uses pulse-width modulation for analog brightness control. Selection depends on your circuit architecture and control requirements.

Q: Are all substitute parts suitable for high-temperature applications?

A: All listed substitutes operate within -40°C to 85°C (TA) range, matching the original specification. The ILD6150XUMA1 extends to -40°C to 150°C (TJ), providing enhanced thermal performance for specialized applications. Verify your specific operating temperature requirements before selection.

Q: What packaging considerations apply when substituting the SSL3252UK/C2,515?

A: The original part uses Tape & Reel (TR) packaging. Substitutes employ various surface-mount packages: 10-LFCSP-WD (ADP1650ACPZ-R7), TSOT-23-6 (AP5725WUG-7), 8-SOIC (ILD6150XUMA1), 8-TDFN (ISL97634IRT18Z-TK), 12-DSBGA (LM3530TMX-40/NOPB), 16-DSBGA (LM3556TME/NOPB), 9-DSBGA (LM3642TLE/NOPB), TSOT-23-5 (LT1937ES5#TRPBF), SC-70-6 (LT1937ESC6#TRPBF), and 8-SOIC (LTC3490ES8#PBF). PCB redesign may be required for package transitions.

Q: How do MSL ratings affect substitute part selection?

A: MSL-3 rated parts (ADP1650ACPZ-R7, ILD6150XUMA1, ISL97634IRT18Z-TK) allow 168 hours of moisture exposure before reflow. MSL-1 rated parts (AP5725WUG-7, LM3530TMX-40/NOPB, LM3556TME/NOPB, LM3642TLE/NOPB, LT1937 series, LTC3490ES8#PBF) have unlimited moisture tolerance. For high-volume production with extended storage, MSL-1 parts reduce moisture-related defect risk.

Q: Which substitute offers the best inventory availability?

A: The LM3642TLE/NOPB (Texas Instruments) provides the highest inventory level at 15,335 units, followed by LT1937ES5#TRPBF (Analog Devices Inc.) at 37,800 units. Both ensure supply continuity for production requirements.

Q: Can the ILD6150XUMA1 replace the SSL3252UK/C2,515 despite using Step-Down (Buck) topology?

A: The ILD6150XUMA1 employs Step-Down (Buck) topology versus the original Step-Up (Boost) configuration. This topology difference fundamentally alters voltage conversion behavior. Selection requires circuit-level analysis to confirm compatibility with your input and output voltage requirements. The higher supply voltage range (4.5V to 60V) may provide advantages in specific applications but cannot be assumed as a direct replacement without design verification.

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