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NXP Semiconductors PCA9625D/S911,518
- Part No.:
- PCA9625D/S911,518
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 32-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PCA9625D/S911,518.pdf
- Description:
- IC LED DRVR LIN PWM 100MA 32SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,705
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Product details
Overview
PCA9625D/S911,518 from NXP Semiconductors is a 16-channel I²C-bus LED driver IC optimized for RGBA LED dimming and synchronized blinking. It delivers 100 mA per open-drain output, supports up to 24 V LED supply (VDD(DRV)FET), operates from 2.3 V to 5.5 V logic supply, and features dual PWM control: 97 kHz individual brightness (256 steps) and programmable group blinking (24 Hz to 10.73 s period). It is used in RGB status indicators and keypad backlights requiring precise multi-LED intensity coordination.
For engineers reviewing the PCA9625D/S911,518 datasheet, PCA9625D/S911,518 pinout, PCA9625D/S911,518 application, or PCA9625D/S911,518 equivalent, key selection criteria include its Fast-mode Plus (1 MHz) I²C interface, hardware address scalability (up to 126 devices), active-low OE pin for external synchronization, and dual-mode group control (dimming at 190 Hz or blinking with user-defined frequency/duty cycle).
Technical Context
The PCA9625D/S911,518 integrates a 25 MHz internal oscillator (no external components required) and uses a dedicated VDD(DRV)FET supply rail (10–24 V) to drive high-voltage LEDs while maintaining 2.3–5.5 V logic compatibility. Its register architecture supports Auto-Increment modes for efficient bulk programming of 16 individual PWM registers (02h–11h), GRPPWM (12h), and GRPFREQ (13h).
Control logic enables four LED output states per channel (off/on/individual PWM/group+individual PWM), selected via LDR bits in LEDOUT0–LEDOUT3 registers. The DMBLNK bit in MODE2 (01h) determines whether GRPPWM/GRPFREQ configure global dimming (190 Hz fixed) or global blinking (24 Hz–10.73 s programmable), with output update timing configurable to occur on ACK or STOP command.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fm+ compatible, 1 MHz max clock rate; 30 mA SDA drive strength supports >4000 pF bus capacitance. |
| LED Outputs | 16 open-drain channels; each sinks 0–100 mA; tolerant to 24 V off-state voltage. |
| Individual PWM | 97 kHz fixed frequency; 256-step linear duty cycle (0%–99.6%) per channel via PWM0–PWM15 registers. |
| Group Control | 256-step GRPPWM (0%–99.6%); GRPFREQ sets blinking period from 41 ms (24 Hz) to 10.73 s (00h–FFh). |
| Supply Rails | VDD = 2.3–5.5 V (logic); VDD(DRV)FET = 10–24 V (LED driver); VSS(DRV)FET = dedicated ground return. |
| Addressing | 7 hardware address pins (126 unique addresses); 1 All Call + 3 Sub Call software addresses; SWRST at 06h. |
| Operating Range | −40 °C to +85 °C; ESD rated >2000 V HBM; latch-up tested to JEDEC JESD78 (>100 mA). |
Pinout & Package
PCA9625D/S911,518 is housed in a plastic small outline package (SO32) with 32 leads and 7.5 mm body width (SOT287-1). Pin functions are validated per NXP's official pin configuration diagram and 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; configured via LEDOUTx and PWMx registers. |
| OE | Active-low output enable | Hardware-synchronized enable/disable of all 16 outputs; supports external PWM dimming or blinking when not conflicting with internal DMBLNK mode. |
| SCL / SDA | I²C-bus clock/data lines | Fm+ compliant; SDA has 30 mA drive capability; both inputs include noise filtering and 5.5 V tolerance. |
| VDD / VSS | Logic power supply and ground | VDD = 2.3–5.5 V; VSS = logic ground reference; separate from FET driver supply domain. |
| VDD(DRV)FET / VSS(DRV)FET | FET driver power and ground | Dedicated 10–24 V supply and ground for LED current paths; electrically isolated from logic domain. |
| A0–A6 | Hardware I²C address inputs | 7-pin binary address; sets unique slave address; no internal pull-ups - external biasing required. |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel independent brightness control | Each LED driven by dedicated 8-bit PWM register (02h–11h) at 97 kHz, enabling flicker-free 256-step intensity resolution. |
| Programmable group blinking/dimming | Single GRPPWM/GRPFREQ register pair controls all 16 outputs simultaneously - dimming at 190 Hz or blinking with 256-step period (24 Hz–10.73 s) and duty cycle. |
| Multi-level I²C addressing | Supports device-level (A0–A6), group-level (All Call E0h/Sub Call E2h/E4h/E8h), and system-level (SWRST 06h) commands - enabling hierarchical LED control without bus congestion. |
| Hardware synchronization input | Active-low OE pin allows external clock-driven simultaneous on/off or dimming across multiple PCA9625D/S911,518 devices - critical for marquee effects or system-wide LED state transitions. |
| Robust power management | Internal 25 MHz oscillator eliminates external crystal; power-on reset ensures deterministic startup; low standby current and hot-insertion support simplify system integration. |
Applications
| RGB Status Indicators | Keypad Backlighting |
|---|---|
|
Use Scenario: Multi-color status feedback on industrial HMIs or telecom equipment front panels using discrete red/green/blue LEDs. IC Role / Device Role / Timing Role: PCA9625D/S911,518 drives 16 RGBA channels independently; individual PWM registers set color balance; group GRPPWM provides uniform blink for alarm states. Use Value: Eliminates microcontroller GPIO overhead and software PWM timing constraints while delivering consistent 97 kHz switching for flicker-free perception. |
Use Scenario: Backlighting for membrane keypads in handheld medical devices where uniform illumination and low EMI are critical. IC Role / Device Role / Timing Role: PCA9625D/S911,518 supplies constant-current sink per key LED; group blinking (via GRPFREQ/GRPPWM) implements battery-low warning; OE pin synchronizes backlight fade with system sleep. Use Value: Enables smooth, hardware-timed dimming transitions without CPU intervention, reducing firmware complexity and power consumption. |
| LCD Backlight Control | LED Display Modules |
|
Use Scenario: Edge-lit LCD backlight in portable instrumentation requiring adjustable white-point and brightness scaling. IC Role / Device Role / Timing Role: PCA9625D/S911,518 drives white LED strings via external FETs (using VDD(DRV)FET = 24 V); individual PWM adjusts segment intensity; group GRPPWM scales overall brightness. Use Value: Supports 24 V LED supply while maintaining 3.3 V logic compatibility, enabling high-efficiency backlighting without level-shifting circuitry. |
Use Scenario: 16-segment alphanumeric LED displays in point-of-sale terminals where character-specific dimming improves readability under ambient light. IC Role / Device Role / Timing Role: PCA9625D/S911,518 maps each segment to a dedicated LEDn output; LEDOUTx registers select on/off/PWM modes; Sub Call addresses allow dynamic reconfiguration of display zones. Use Value: Allows real-time brightness tuning per character (e.g., dim colon separators) using only two I²C writes - no frame buffer or timer resources needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9635D/S911,518 | Same register map and I²C protocol; replaces internal 100 mA FETs with high-side driver outputs for external MOSFETs; supports >24 V LED supplies. | Required when LED forward voltage exceeds 24 V or total current per channel exceeds 100 mA. | Select PCA9635D/S911,518 if driving high-Vf UV or high-power white LEDs needing external FETs; otherwise PCA9625D/S911,518 offers lower BOM cost and simpler layout. |
| TLC5940IPM | 40-pin HTSSOP; 16-channel, 12-bit PWM (4096 steps); 125 mA per channel; requires external 32 MHz oscillator; no group blinking or Sub Call addressing. | Better grayscale resolution for imaging applications; lacks hardware OE sync and multi-address group control. | Choose TLC5940IPM only when >256-step intensity resolution is mandatory and I²C bus loading must be minimized; PCA9625D/S911,518 better suits systems requiring coordinated multi-device blinking. |
Compared with PCA9635D/S911,518 and TLC5940IPM, the PCA9625D/S911,518 uniquely combines Fm+ I²C scalability (126 devices), hardware OE synchronization, and dual-mode group control (dimming/blinking) in a single SO32 package - making it optimal for cost-sensitive, space-constrained designs requiring coordinated multi-LED visual feedback.
Availability
PCA9625D/S911,518 is available at Aetrix Electronics and suitable for RGB status indicators, keypad backlights, and LCD backlighting requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for PCA9625D/S911,518 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with core expertise in mixed-signal IC design and embedded processing.
The PCA9625D/S911,518 belongs to NXP's Fm+ LED driver family, engineered specifically for high-density I²C bus systems requiring scalable, synchronized LED control in space-constrained consumer and industrial interfaces.
FAQ
What is the maximum number of PCA9625D/S911,518 devices supported on a single I²C bus?
The PCA9625D/S911,518 supports up to 126 devices on one I²C bus using its 7 hardware address pins (A0–A6). Two reserved addresses (Software Reset and All Call) reduce the usable count from 128 to 126. Each device must have a unique A0–A6 combination, and external pull-up/pull-down resistors are required since no internal biasing is provided.
Does PCA9625D/S911,518 require an external crystal or oscillator?
No, the PCA9625D/S911,518 contains a fully integrated 25 MHz internal oscillator that requires no external components. This eliminates board space, cost, and layout sensitivity associated with external timing elements while ensuring stable 97 kHz individual PWM and 190 Hz group dimming frequencies.
How does the OE pin interact with internal group blinking (DMBLNK = 1)?
Using the OE pin for external blinking while DMBLNK = 1 (group blinking enabled) results in undefined output behavior per the datasheet. The OE pin must remain static during internal blinking operations. For synchronized multi-device blinking, use GRPFREQ/GRPPWM with identical register values across devices instead of OE modulation.
What is the function of VDD(DRV)FET and VSS(DRV)FET pins on PCA9625D/S911,518?
VDD(DRV)FET (pins 24 and 26) supplies 10–24 V to the internal 100 mA NAND FET drivers, enabling high-voltage LED operation. VSS(DRV)FET (pins 19 and 31) provides the dedicated return path for LED current - electrically isolated from logic ground (VSS, pin 25) to prevent noise coupling into the I²C interface or control logic.
Can PCA9625D/S911,518 drive LEDs requiring more than 100 mA per channel?
No - the PCA9625D/S911,518's internal FETs are rated for 100 mA maximum sink per channel. For higher currents, use the pin-compatible PCA9635D/S911,518, which replaces internal FETs with high-side driver outputs designed to control external MOSFETs capable of >500 mA per channel and >60 V LED supply rails.
PCA9625D/S911,518 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/S911,518 FAQ
1.How can I place an order for PCA9625D/S911,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9625D/S911,518 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/S911,518 reliable?
The price and inventory of PCA9625D/S911,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9625D/S911,518 is usually 5 days.
3.What payment methods are accepted for PCA9625D/S911,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9625D/S911,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9625D/S911,518?
PCA9625D/S911,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9625D/S911,518 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/S911,518?
For technical support, including PCA9625D/S911,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9625D/S911,518 requirements.
6.How does Aetrix verify that PCA9625D/S911,518 is sourced from the original manufacturer or authorized distributors?
All PCA9625D/S911,518 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/S911,518 meets industry standards.
7.What is the process for return or replacement of PCA9625D/S911,518?
All PCA9625D/S911,518 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9625D/S911,518, 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/S911,518 part is unused and in its original packaging.
Return procedure for PCA9625D/S911,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9625D/S911,518 Tags
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BCR402RE6327HTSA1
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BCR420UE6433HTMA1
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HV9910CLG-G
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CL2N8-G
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BCR421UW6-7
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BCR420UFD-7
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