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NXP Semiconductors PCA9624PW,118
- Part No.:
- PCA9624PW,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCA9624PW,118.pdf
- Description:
- IC LED DRV LIN PWM 100MA 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,720
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Product details
Overview
The PCA9624PW,118 from NXP Semiconductors is an I²C-bus controlled 8-bit LED driver optimized for RGBA LED dimming and blinking, featuring eight 100 mA open-drain outputs tolerant to 40 V, individual 97 kHz PWM (256-step) per channel, group PWM at 190 Hz or programmable 24 Hz–10.73 s blinking, and Fast-mode Plus (1 MHz) I²C interface - used in keypad backlights, status indicators, and RGB displays.
For engineers reviewing the PCA9624PW,118 datasheet, PCA9624PW,118 pinout, PCA9624PW,118 application, or PCA9624PW,118 equivalent, key selection criteria include its 2.3–5.5 V supply range, hardware address pin support for up to 126 devices on one bus, active-low OE for synchronized hardware blink/dim, and software reset via I²C - critical for multi-device LED control systems requiring precise timing and bus scalability.
Technical Context
The PCA9624PW,118 integrates a 25 MHz internal oscillator (no external components required), supports I²C-bus Auto-Increment addressing modes for sequential register writes, and implements dual-layer PWM control: per-channel 97 kHz signals for fine brightness resolution and group-level 190 Hz (or programmable) modulation for synchronized dimming/blinking. Its MODE1/MODE2 registers configure sleep mode, subaddress enablement, output change timing (ACK vs STOP), and group function (dim vs blink).
It features noise-filtered SDA/SCL inputs, 5.5 V-tolerant non-LED pins, hot-insertion support, and latch-up immunity exceeding 100 mA per JEDEC JESD78. The device uses volatile register programming with power-on reset initialization and supports Software Reset (SWRST Call at address 0x06) to restore default states without power cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fm+ compatible up to 1 MHz; 30 mA SDA drive strength enables robust operation on high-capacitance buses (≤4000 pF) |
| LED Outputs | 8 open-drain channels; each sinks 0–100 mA; 40 V off-state voltage tolerance allows direct connection to common-anode LED strings |
| Individual PWM | 97 kHz fixed frequency; 256-step linear duty cycle (0–99.6%) per channel for flicker-free brightness control |
| Group PWM | 190 Hz fixed or programmable 24 Hz–10.73 s period; 256-step duty cycle for synchronized dimming or blinking across all LEDs |
| Supply Range | 2.3 V to 5.5 V VDD; enables direct integration with 3.3 V and 5 V microcontroller systems |
| Operating Temp | −40 °C to +85 °C ambient; qualified for industrial and consumer handheld applications |
| Addressing | 7 hardware address pins (126 unique addresses); 1 All Call + 3 Sub Call software-programmable I²C addresses for grouped control |
Pinout & Package
TSSOP24 package (SOT355-1), 4.4 mm body width, 0.65 mm pitch; requires proper grounding of all five VSS pins (pins 1, 7, 12, 13, 18) for stable operation and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (24) | Power supply input | 2.3–5.5 V main supply; decoupling capacitor required near pin |
| VSS (1,7,12,13,18) | Ground reference | All five pins must be connected to system ground; critical for EMI suppression and thermal dissipation |
| SDA (23) | I²C bidirectional data line | 5.5 V tolerant; internal noise filter; requires external pull-up resistor |
| SCL (22) | I²C clock input | 5.5 V tolerant; internal noise filter; requires external pull-up resistor |
| OE (19) | Active-low output enable | Hardware synchronization input; drives all 8 LED outputs into high-Z when HIGH |
| A0–A6 (2–6,20–21) | Hardware I²C address inputs | 7-pin binary address; unconnected pins default to LOW; enables up to 126 devices on one bus |
| LED0–LED7 (8–11,14–17) | Open-drain LED driver outputs | Each sinks up to 100 mA; 40 V tolerant; no internal current limiting - external series resistors required |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel brightness control | 256-step linear PWM at 97 kHz ensures smooth, flicker-free intensity adjustment without visible artifacts |
| Group-level dimming/blinking | Configurable 190 Hz or 24 Hz–10.73 s global modulation enables marquee effects or uniform status indication |
| Hardware address scalability | 7 address pins support daisy-chained configurations with up to 126 PCA9624PW,118 devices on a single I²C bus |
| Software-defined grouping | 1 All Call + 3 Sub Call addresses allow simultaneous control of arbitrary LED subsets (e.g., all reds or top-row indicators) |
| Robust bus interface | Fm+ 1 MHz speed, 30 mA SDA drive, and noise filtering ensure reliable communication in electrically noisy environments |
Applications
| RGB Status Indicators | Keypad Backlighting |
|---|---|
Use Scenario: Multi-color status feedback on industrial HMI panels or network equipment front panels. IC Role / Device Role / Timing Role: PCA9624PW,118 drives discrete red/green/blue LEDs with independent brightness control and synchronized group blinking for alarm states. Use Value: Eliminates need for external PWM controllers or microcontroller GPIO expansion; reduces BOM count and firmware overhead. | Use Scenario: Uniform backlighting for membrane keypads in handheld medical devices or ruggedized field terminals. IC Role / Device Role / Timing Role: PCA9624PW,118 provides constant-current sinking for 8-key backlight array with adjustable brightness and fade-in/fade-out via group PWM. Use Value: Enables low-power standby modes via hardware OE pin and eliminates LED current-matching drift across temperature. |
| LED Display Drivers | LCD Backlight Control |
Use Scenario: Driving segmented or dot-matrix LED displays in point-of-sale terminals or instrumentation dashboards. IC Role / Device Role / Timing Role: PCA9624PW,118 manages 8-segment intensity and blinking patterns using individual + group PWM registers for dynamic content rendering. Use Value: Supports real-time display updates over I²C without CPU intervention; leverages Auto-Increment addressing for efficient register writes. | Use Scenario: Edge-lit LCD backlight for compact consumer displays where space and EMI are constrained. IC Role / Device Role / Timing Role: PCA9624PW,118 sinks current from white LED strings (via external resistors), applying group PWM for brightness scaling and soft-start sequencing. Use Value: Delivers consistent luminance across temperature with no external oscillator or timing components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9634PW,118 | Same register map and software compatibility; higher-voltage external drivers required - no integrated 100 mA FETs; supports >40 V LED strings | Used when LED forward voltage exceeds 40 V or when higher current (>100 mA) per channel is needed | Select PCA9634PW,118 only if PCA9624PW,118's on-die 100 mA FETs cannot meet voltage/current requirements |
| TLC59283DBQR | 16-channel constant-current sink; 30 MHz SPI interface; no I²C or group PWM; fixed 1.2 MHz internal clock | Preferred for high-channel-count, high-speed LED matrix control where I²C bandwidth or group modulation is not required | Choose TLC59283DBQR for SPI-based systems needing >8 channels or tighter timing control than I²C permits |
Compared with PCA9634PW,118 and TLC59283DBQR, the PCA9624PW,118 uniquely combines I²C-based scalability, dual-layer PWM, and integrated 100 mA drivers in TSSOP24 - making it optimal for cost-sensitive, space-constrained RGBA indicator systems requiring synchronized visual effects without external timing components.
Availability
PCA9624PW,118 is available at Aetrix Electronics and suitable for RGB status indicators, keypad backlights, and LED display drivers requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for PCA9624PW,118 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, power, and mixed-signal IC design.
The PCA9624PW,118 belongs to NXP's Fm+ I²C LED driver product line, engineered specifically for scalable, low-software-overhead control of multi-color LED arrays in space-constrained human-interface applications.
FAQ
What is the maximum number of PCA9624PW,118 devices that can share one I²C bus?
The PCA9624PW,118 supports up to 126 devices on a single I²C bus using its seven hardware address pins (A0–A6). Two reserved addresses (Software Reset and LED All Call) reduce the theoretical 128 possibilities to 126 usable slave addresses. Each device must have a unique hardware address configuration to avoid bus contention.
Does the PCA9624PW,118 require an external oscillator or crystal?
No, the PCA9624PW,118 includes a 25 MHz internal oscillator and requires no external timing components. This oscillator drives both the I²C interface logic and the 97 kHz individual PWM generators, ensuring stable operation across temperature and supply voltage variations without added BOM cost or board space.
How does the active-low OE pin function in the PCA9624PW,118?
The OE pin on the PCA9624PW,118 enables hardware-level synchronization: when pulled LOW, all eight LED outputs are enabled; when HIGH, they enter high-impedance state. It supports external PWM dimming or blinking - but must not be used simultaneously with internal group dimming/blinking (DMBLNK = 1 in MODE2) to avoid undefined behavior.
Can the PCA9624PW,118 drive LEDs with forward voltages above 5.5 V?
Yes - the PCA9624PW,118's open-drain LED outputs tolerate up to 40 V in the off state, allowing direct connection to LED strings powered by higher-voltage rails (e.g., 12 V or 24 V supplies), provided appropriate current-limiting resistors are used. The VDD supply itself remains limited to 2.3–5.5 V.
What is the difference between individual and group PWM control in the PCA9624PW,118?
Individual PWM (97 kHz, 256-step) sets per-channel brightness independently via PWM0–PWM7 registers. Group PWM operates at 190 Hz (fixed) or programmable 24 Hz–10.73 s (via GRPFREQ) and applies uniform dimming or blinking to all enabled LEDs via GRPPWM - enabling synchronized visual effects like marquee scrolling or alarm pulsing without per-channel register updates.
PCA9624PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 8
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 40V
- 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:
- 24-TSSOP
PCA9624PW,118 FAQ
1.How can I place an order for PCA9624PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9624PW,118 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 PCA9624PW,118 reliable?
The price and inventory of PCA9624PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9624PW,118 is usually 5 days.
3.What payment methods are accepted for PCA9624PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9624PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9624PW,118?
PCA9624PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9624PW,118 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 PCA9624PW,118?
For technical support, including PCA9624PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9624PW,118 requirements.
6.How does Aetrix verify that PCA9624PW,118 is sourced from the original manufacturer or authorized distributors?
All PCA9624PW,118 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 PCA9624PW,118 meets industry standards.
7.What is the process for return or replacement of PCA9624PW,118?
All PCA9624PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9624PW,118, 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 PCA9624PW,118 part is unused and in its original packaging.
Return procedure for PCA9624PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9624PW,118 Tags
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BCR420UE6433HTMA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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