PCA9552PW,112 LED Driver IC - Equivalent & Substitute Parts

Part Overview

The PCA9552PW,112 is a 16-output LED driver power switch IC manufactured by NXP USA Inc., designed for applications requiring individual LED control with 25mA per-channel output capability. This part operates across a 2.3V to 5.5V supply range and is housed in a 24-TSSOP surface mount package. The device is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	PCA9552PW,112
Manufacturer	NXP USA Inc.
Category	Power Management (PMIC)
Product Status	Obsolete
Type	Power Switch
Number of Outputs	16
Voltage - Supply (Min)	2.3V
Voltage - Supply (Max)	5.5V
Current - Output / Channel	25mA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	24-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PCA9552PW,112 is determined by the following critical parameters:

Number of Outputs: 16 channels (mandatory match)
Current - Output / Channel: 25mA minimum requirement
Voltage - Supply Range: 2.3V to 5.5V compatibility
Operating Temperature: -40°C to 85°C
Package Type: Surface mount compatibility
Product Status: Active status preferred for long-term availability
Compliance: ROHS3 and REACH compliance maintained

Substitute parts are grouped into two categories based on control interface and output type:

Category A - Direct Pin/Protocol Compatible (I2C Control)

PCA9552PW,118 (NXP, Active, I2C interface, 24-TSSOP)
CAT9532YI-T2 (onsemi, Active, I2C interface, 24-TSSOP)

Category B - Functional Equivalents (Higher Current Capability, Alternative Interfaces)

TLC59116IPWR (Texas Instruments, Active, I2C interface, 28-TSSOP, 120mA per channel)
TLC5923RHBR (Texas Instruments, Active, Shift Register interface, 32-VQFN, 80mA per channel)
TLC5924RHBR (Texas Instruments, Active, Shift Register interface, 32-VQFN, 80mA per channel)
TLC5945RHBR (Texas Instruments, Active, Shift Register interface, 32-VQFN, 80mA per channel)
MAX7304AWA+T (Analog Devices/Maxim, Active, 25-WLP, 20mA per channel)

Parameter Comparison

Part Number	Manufacturer	Product Status	Type	Number of Outputs	Voltage Supply Min	Voltage Supply Max	Current / Channel	Package	Operating Temp	RoHS Status
PCA9552PW,112	NXP USA Inc.	Obsolete	Power Switch	16	2.3V	5.5V	25mA	24-TSSOP	-40°C ~ 85°C	ROHS3
PCA9552PW,118	NXP USA Inc.	Active	Power Switch	16	2.3V	5.5V	25mA	24-TSSOP	-40°C ~ 85°C	ROHS3
CAT9532YI-T2	onsemi	Active	Linear	16	2.3V	5.5V	25mA	24-TSSOP	-40°C ~ 85°C	ROHS3
MAX7304AWA+T	Analog Devices Inc./Maxim Integrated	Active	Linear	16	1.62V	3.6V	20mA	25-WLP	-40°C ~ 85°C	ROHS3
TLC59116IPWR	Texas Instruments	Active	Linear	16	3V	5.5V	120mA	28-TSSOP	-40°C ~ 85°C	ROHS3
TLC5923RHBR	Texas Instruments	Active	Linear	16	3V	5.5V	80mA	32-VQFN	-40°C ~ 85°C	ROHS3
TLC5924RHBR	Texas Instruments	Active	Linear	16	3V	5.5V	80mA	32-VQFN	-40°C ~ 85°C	ROHS3
TLC5945RHBR	Texas Instruments	Active	Linear	16	3V	5.5V	80mA	32-VQFN	-40°C ~ 85°C	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Minimal Design Changes)

PCA9552PW,118 is the primary direct substitute. It maintains identical electrical specifications (16 outputs, 25mA per channel, 2.3V–5.5V supply), the same 24-TSSOP package footprint, and equivalent compliance certifications. The device is currently in active production status with 2800 units in stock, ensuring long-term availability. The primary difference is the addition of I2C control interface and 400kHz frequency specification, which represents an enhancement rather than a limitation.

CAT9532YI-T2 (onsemi) provides an alternative direct replacement with identical pin count, package, voltage range, and current specifications. This part is also in active production with 1450 units available. The linear output topology differs from the original power switch design but maintains functional equivalence for 16-channel LED control applications.

For Higher Current Applications

TLC59116IPWR, TLC5923RHBR, TLC5924RHBR, and TLC5945RHBR are suitable when application requirements exceed 25mA per channel. These devices provide 80mA to 120mA per-channel capability while maintaining 16-output configuration and -40°C to 85°C operating range. Package changes (28-TSSOP or 32-VQFN) require PCB layout modifications. All devices maintain ROHS3 compliance and active production status.

For Low-Voltage Applications

MAX7304AWA+T operates at reduced supply voltage (1.62V–3.6V) compared to the original specification (2.3V–5.5V). This device is suitable only when the application operates exclusively within the 1.62V–3.6V range. The 20mA per-channel output meets the 25mA minimum requirement only for reduced-load scenarios. The 25-WLP package requires significant PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can PCA9552PW,118 be used as a direct drop-in replacement for PCA9552PW,112?

A: Yes. Both devices share identical electrical specifications (16 outputs, 25mA per channel, 2.3V–5.5V supply range), the same 24-TSSOP package, and equivalent compliance certifications. The primary difference is the addition of I2C control interface in the PCA9552PW,118, which does not prevent its use in applications originally designed for the PCA9552PW,112.

Q: What is the difference between power switch and linear output topologies?

A: The original PCA9552PW,112 uses power switch topology, while CAT9532YI-T2 and TLC series devices use linear topology. Both topologies provide 16-channel LED control. Power switch designs are typically used for on/off control, while linear designs support PWM dimming. Functional compatibility depends on application requirements.

Q: Why do some substitutes have higher current ratings (80mA–120mA) than the original 25mA specification?

A: Higher current capability provides design flexibility for applications requiring greater LED brightness or multiple LED strings per channel. Devices with higher current ratings remain compatible with 25mA load requirements; the excess capacity is unused in such applications.

Q: Are package changes required when using TLC5923RHBR, TLC5924RHBR, or TLC5945RHBR?

A: Yes. These devices use 32-VQFN (5x5mm) packages instead of the original 24-TSSOP package. PCB layout and footprint modifications are required. However, all three devices maintain 16-output configuration, -40°C to 85°C operating range, and ROHS3 compliance.

Q: Is MAX7304AWA+T suitable for all applications using PCA9552PW,112?

A: No. MAX7304AWA+T operates at reduced supply voltage (1.62V–3.6V) and provides 20mA per-channel output. It is suitable only for applications operating exclusively within the 1.62V–3.6V range and where 20mA per-channel output is sufficient. The 25-WLP package requires significant PCB redesign.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the original PCA9552PW,112 certifications. Moisture sensitivity levels vary (MSL 1 or MSL 2), which may affect storage and handling requirements.

Q: Which substitute offers the best long-term availability?

A: TLC5923RHBR (Texas Instruments) has the highest inventory level at 353,750 units in stock, followed by TLC59116IPWR with 17,400 units. Both devices are in active production status and represent optimal choices for designs requiring extended production runs.

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