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NXP Semiconductors PCA9625D,518
- Part No.:
- PCA9625D,518
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 32-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PCA9625D,518.pdf
- Description:
- IC LED DRVR LIN PWM 100MA 32SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
PCA9625D,518 from NXP Semiconductors is a 16-bit I²C-bus LED driver IC with 16 open-drain outputs capable of sinking up to 100 mA each at up to 24 V, optimized for RGBA LED dimming and blinking. It features individual 8-bit PWM (97 kHz, 0–99.6% duty) per channel, plus group-level 8-bit PWM (190 Hz fixed or 24 Hz–10.73 s programmable) for synchronized dimming or blinking. It operates from 2.3 V to 5.5 V logic supply and supports 10 V–24 V FET driver supply - used in LED status indicators, keypad backlights, and RGB display modules.
For engineers reviewing the PCA9625D,518 datasheet, PCA9625D,518 pinout, PCA9625D,518 application, or PCA9625D,518 equivalent, key selection considerations include its Fast-mode Plus (1 MHz) I²C interface, hardware addressability for up to 126 devices on one bus, active-low Output Enable (OE) for external synchronization, and dual-layer PWM architecture enabling independent brightness + global blink/dim control.
Technical Context
The PCA9625D,518 integrates a 25 MHz internal oscillator (no external components required), noise-filtered SDA/SCL inputs, and power-on reset. Its register map includes 16 individual PWM registers (02h–11h), GRPPWM (12h) and GRPFREQ (13h) for group control, and LEDOUT0–LEDOUT3 (14h–17h) to configure output states (off/on/individual/group mode).
Control logic supports Auto-Increment addressing modes (AI[2:0]) for sequential register writes, and four software-programmable I²C addresses - one All Call (E0h default) and three Sub Call (E2h/E4h/E8h) - enabling grouped device control without bus contention. The OE pin provides hardware-level synchronization across multiple PCA9625D,518 units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output count | 16 open-drain LED drivers, each independently controllable |
| Max sink current per output | 100 mA - sufficient to drive high-brightness RGBA LEDs directly |
| Output voltage tolerance | 24 V off-state - enables use with common 12 V/24 V LED strings |
| Individual PWM resolution & frequency | 8-bit (256 steps), 97 kHz fixed - eliminates visible flicker while enabling fine brightness gradation |
| Group PWM resolution & range | 8-bit (256 steps); 190 Hz fixed dimming or 24 Hz–10.73 s programmable blink period - supports both smooth dimming and user-visible animation |
| I²C interface | Fast-mode Plus (Fm+), 1 MHz max - supports high-speed, high-capacitance (up to 4000 pF) bus operation |
| Supply ranges | VDD = 2.3–5.5 V; VDD(DRV)FET = 10–24 V - separates logic and power domains for robust system integration |
Pinout & Package
PCA9625D,518 is housed in a plastic small outline package (SO32) with 32 leads and 7.5 mm body width (SOT287-1). All pins are electrically defined per NXP's official pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LED0–LED15 | Open-drain LED driver outputs | Sink up to 100 mA each; tolerate 24 V off-state - connect directly to cathodes of common-anode LED arrays |
| OE | Active-low output enable | Hardware-synchronized blanking: LOW enables outputs; HIGH places all outputs in high-Z - enables multi-device blink sync without software coordination |
| SCL / SDA | I²C-bus clock/data lines | Fm+ compliant (1 MHz); SDA has 30 mA high-drive capability - drives long traces or high-capacitance buses without external buffers |
| A0–A6 | Hardware I²C address inputs | 7-pin binary address (126 unique addresses) - allows dense bus topology with individually addressable devices |
| VDD / VSS | Logic supply and ground | 2.3–5.5 V operation; 5.5 V tolerant on non-LED pins - compatible with 3.3 V and 5 V microcontrollers |
| VDD(DRV)FET / VSS(DRV)FET | FET driver supply and ground | 10–24 V dedicated power domain - powers internal 100 mA NAND FETs independently of logic supply |
Key Features
| Feature | Design Value |
|---|---|
| Software Reset (SWRST) | Full register reset via I²C command (06h + A5h + 5Ah) - restores all registers to POR state without power cycle |
| LED Group & Sub Call addressing | One All Call (E0h) + three Sub Call (E2h/E4h/E8h) addresses - enables simultaneous control of arbitrary device subsets (e.g., all red LEDs) |
| Output update timing control | Configurable change-on-ACK or change-on-STOP - ensures atomic brightness updates across all 16 channels |
| Internal oscillator | 25 MHz, no external components - eliminates crystal/capacitor BOM cost and layout area |
| ESD & latch-up robustness | 2000 V HBM, 200 V MM, 1000 V CDM; >100 mA latch-up immunity - suitable for industrial and handheld environments |
Applications
| RGB LED Status Indicators | Keypad Backlight Control |
|---|---|
|
Use Scenario: Multi-color status feedback on industrial HMIs or medical devices requiring distinct visual states (e.g., green=ready, red=alarm, amber=warning). IC Role / Device Role / Timing Role: PCA9625D,518 drives 3–4 RGBA LEDs per indicator, applying independent 97 kHz PWM to each color channel while using GRPPWM to pulse entire groups for attention-grabbing alerts. Use Value: Eliminates MCU GPIO and timer overhead; enables precise, flicker-free color mixing and synchronized blink patterns across dozens of indicators via I²C sub-addressing. |
Use Scenario: Uniform, adjustable backlighting for membrane keypads in consumer electronics or automotive infotainment panels. IC Role / Device Role / Timing Role: PCA9625D,518 sinks current from 8–16 parallel white or RGB LEDs; uses individual PWM registers to compensate for LED binning variance, and GRPPWM for smooth ambient-light-adaptive dimming. Use Value: Reduces firmware complexity by offloading PWM generation; supports 24 V LED strings without external drivers; enables factory-set brightness curves via EEPROM-loaded register configurations. |
| Segmented LED Displays | LCD Backlight Dimming |
|
Use Scenario: 7-segment or custom alphanumeric displays in point-of-sale terminals or test equipment where segment brightness must be uniform and dynamically adjustable. IC Role / Device Role / Timing Role: PCA9625D,518 drives each segment cathode with matched 100 mA sink capability; uses individual PWM values to correct for forward-voltage variation across segments, and OE pin for global strobing. Use Value: Ensures consistent luminance across digits without per-segment current-setting resistors; enables multiplexed display driving with hardware-synced blanking to eliminate ghosting. |
Use Scenario: Edge-lit LCD backlight for portable instrumentation or ruggedized displays requiring wide dimming range and thermal stability. IC Role / Device Role / Timing Role: PCA9625D,518 controls 12–16 parallel white LED strings (each ~100 mA); applies GRPPWM for 190 Hz global dimming and individual PWM for per-string current balancing. Use Value: Achieves >1000:1 dimming ratio with no audible coil whine; separates logic (3.3 V) and power (12 V) domains to minimize noise coupling into analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5940RTAT | 16-channel, 12-bit PWM (4096 steps), 30 MHz internal clock; requires external Rref for current setting; no group PWM or Sub Call addressing | Higher resolution for precision lighting; lacks built-in blink/dim grouping and multi-device addressing - requires more MCU intervention for synchronized effects | Select TLC5940RTAT when 12-bit grayscale fidelity is critical and I²C bus loading must be minimized; avoid if group-level animation or >10 devices per bus are required. |
| PCA9635PW,118 | Same software register map and pinout; higher 135 mA per channel; supports external high-voltage/high-current drivers (not self-contained like PCA9625D,518) | Designed for driving larger LED loads or higher-Vf LEDs; requires external FETs - increases BOM and layout complexity but extends voltage/current capability | Choose PCA9635PW,118 only when PCA9625D,518's 100 mA/24 V limits are exceeded; retain same firmware and layout where possible due to software compatibility. |
Compared with TLC5940RTAT and PCA9635PW,118, the PCA9625D,518 uniquely balances integrated 100 mA drive capability, dual-layer PWM, and scalable I²C addressing - making it optimal for compact, multi-LED systems where firmware offload and bus efficiency are prioritized over ultra-high resolution or extreme current.
Availability
PCA9625D,518 is available at Aetrix Electronics and suitable for RGB status indicators, keypad backlights, segmented LED displays, and LCD backlighting requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for PCA9625D,518 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in interface, power management, and LED control ICs.
The PCA9625D,518 belongs to NXP's Fm+ I²C LED driver family, designed specifically for high-density, low-software-overhead LED control in space-constrained and bus-crowded systems - emphasizing scalability, synchronization, and integrated power handling.
FAQ
What is the maximum number of PCA9625D,518 devices that can share one I²C bus?
The PCA9625D,518 supports up to 126 uniquely addressable units via its seven hardware address pins (A0–A6). This assumes no conflict with reserved I²C addresses (e.g., Software Reset 06h or All Call E0h), and excludes use of Sub Call addresses for additional grouping. Each PCA9625D,518 occupies one address slot, and the bus capacitance limit (4000 pF) must also be verified in high-density deployments.
Does PCA9625D,518 require an external crystal or resonator?
No. The PCA9625D,518 integrates a 25 MHz internal oscillator with no external components required. This oscillator drives all timing functions including the 97 kHz individual PWM and 190 Hz group PWM generators, eliminating BOM cost, board space, and calibration effort associated with external timing elements.
How does the Output Enable (OE) pin interact with internal PWM settings in PCA9625D,518?
When OE is HIGH, all 16 LED outputs enter high-impedance state - overriding all PWM and output state register settings. When OE is LOW, outputs resume normal operation per LEDOUTx and PWMx/GRPPWM register values. OE must not be used simultaneously with internal group blinking (DMBLNK = 1) or dimming (DMBLNK = 0), as this creates undefined behavior per the datasheet.
Can PCA9625D,518 drive common-anode or common-cathode LED configurations?
The PCA9625D,518 features open-drain outputs and is designed exclusively for common-anode LED configurations: the LED anode connects to a positive supply (up to 24 V), and the PCA9625D,518 sinks current from the cathode. It cannot directly drive common-cathode LEDs, which would require high-side switching not supported by this device.
What is the function of the GRPFREQ register in PCA9625D,518?
The GRPFREQ register (address 13h) sets the blinking period for group-level animation when DMBLNK = 1 in MODE2. Its 8-bit value maps linearly to periods from 41 ms (24 Hz) to 10.73 seconds. For example, writing 00h yields ~41 ms period; FFh yields ~10.73 s. When DMBLNK = 0 (group dimming), GRPFREQ is ignored - only GRPPWM (12h) affects brightness.
PCA9625D,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 24V
- Current - Output / Channel:
- 100mA
- Frequency:
- 100kHz ~ 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SO
PCA9625D,518 FAQ
1.How can I place an order for PCA9625D,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9625D,518 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCA9625D,518 reliable?
The price and inventory of PCA9625D,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9625D,518 is usually 5 days.
3.What payment methods are accepted for PCA9625D,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9625D,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9625D,518?
PCA9625D,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9625D,518 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCA9625D,518?
For technical support, including PCA9625D,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9625D,518 requirements.
6.How does Aetrix verify that PCA9625D,518 is sourced from the original manufacturer or authorized distributors?
All PCA9625D,518 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCA9625D,518 meets industry standards.
7.What is the process for return or replacement of PCA9625D,518?
All PCA9625D,518 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9625D,518, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCA9625D,518 part is unused and in its original packaging.
Return procedure for PCA9625D,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9625D,518 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
Microchip Technology
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CL2N8-G
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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