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NXP Semiconductors PCA9632TK,118
- Part No.:
- PCA9632TK,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
PCA9632TK,118.pdf
- Description:
- IC LED DRIVER PS PWM 25MA 8HVSON
- Quantity:
- Payment:
- Shipping:
Inventory:11,508
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Product details
Overview
PCA9632TK,118 from NXP Semiconductors is a 4-bit Fast-mode Plus (Fm+) I²C-bus LED driver optimized for RGBA color mixing, featuring 8-bit individual PWM (1.5625 kHz), 6-bit group dimming (6.25 kHz), and 4-bit group PWM (190 Hz), with 25 mA sink capability per channel at 5 V and 2.3 V to 5.5 V supply operation.
For engineers reviewing the PCA9632TK,118 datasheet, PCA9632TK,118 pinout, PCA9632TK,118 application, or PCA9632TK,118 equivalent, this device supports synchronized multi-LED control in space-constrained RGB status indicators, keypad backlights, and LCD backlighting - with hardware address selection disabled (fixed single-address mode) and HVSON8 thermal-enhanced packaging for high-density PCB layouts.
Technical Context
The PCA9632TK,118 implements dual-mode PWM architecture: individual LED brightness is controlled via 256-step (8-bit) linear PWM at 1.5625 kHz in Individual or Blink modes, while group-level dimming/blinking uses configurable resolution - 16-step (4-bit) at 190 Hz for dimming, or 64/256-step (6-/8-bit) at programmable frequencies from 24 Hz to 0.09 Hz for blinking.
It integrates an internal 400 kHz oscillator, supports I²C-bus speeds up to 1 MHz, and features software-programmable output configuration (open-drain or totem-pole), edge-rate control, noise filtering on SDA/SCL, and low standby current (< 1 μA). The HVSON8 package lacks hardware address pins (A0/A1), enforcing fixed I²C target address 0xC0 (1100000b).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Interface | Fm+ compliant, up to 1 MHz; enables dense bus loading (≤4000 pF) without external pull-up tuning |
| Individual PWM Resolution | 8-bit (256 steps), 1.5625 kHz fixed frequency; provides linear brightness control from 0 % to 99.6 % duty cycle |
| Group Dimming Resolution | 6-bit (64 steps) at 6.25 kHz + 4-bit (16 steps) at 190 Hz; enables synchronized global dimming with minimal register writes |
| Output Drive Capability | Totem-pole: 25 mA sink / 10 mA source at 5 V; open-drain option supports external high-current drivers |
| Supply Voltage Range | 2.3 V to 5.5 V; compatible with Li-ion, 3.3 V logic, and 5 V systems without level-shifting |
| Package & Thermal | HVSON8 (SOT908-1), 3 × 3 × 0.85 mm, exposed thermal pad; enables compact layout and enhanced thermal dissipation |
| ESD Robustness | ≥5000 V HBM (JESD22-A114), ≥1000 V CDM (JESD22-C101); suitable for handheld and industrial assembly environments |
Pinout & Package
HVSON8 package (SOT908-1) with 8 terminals, 0.5 mm pitch, and exposed thermal pad connected to VSS - requires soldering to PCB thermal pad with vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: LED0 | LED driver output 0 | Configurable as open-drain or totem-pole; sinks up to 25 mA at 5 V; directly drives standard LEDs |
| 2: LED1 | LED driver output 1 | Independent brightness and blink control; synchronized with other outputs via GRPPWM/GRPFREQ registers |
| 3: LED2 | LED driver output 2 | Supports LDRx = 10 (individual PWM) or LDRx = 11 (individual + group modulation) per LEDOUT register |
| 4: LED3 | LED driver output 3 | Enables RGBA color mixing; all four outputs share identical PWM timing and group control resources |
| 5: VSS | Ground reference | Primary supply ground; die ground also connected to exposed center pad - must be tied to system GND |
| 6: SCL | I²C clock input | Accepts 1 MHz Fm+ signals; includes internal noise filter to suppress glitches in noisy environments |
| 7: SDA | I²C bidirectional data line | 30 mA high-drive capability supports long traces or high-capacitance buses without external buffers |
| 8: VDD | Power supply input | 2.3–5.5 V operation; powers internal oscillator, logic, and output drivers; 5.5 V tolerant inputs |
Key Features
| Feature | Design Value |
|---|---|
| 40× power reduction vs. PCA9633 | Enables battery-powered RGB indicators with <1 μA standby current and no external oscillator required |
| Software Reset (SWRST) | Resets all registers to POR defaults over I²C using reserved address 0x06 - eliminates need for hardware reset line |
| Output state update control | Outputs change on STOP (default) or ACK command - ensures atomic brightness updates across multiple PCA9632TK,118 devices |
| Hot insertion support | Internal power-on reset and glitch-free startup allow live insertion into powered I²C buses without bus contention |
| I²C Sub Call & All Call addressing | Volatile programming of E2h/E4h/E8h subaddresses and E0h All Call enables firmware-defined LED grouping (e.g., all reds) |
Applications
| RGB Status Indicators | Keypad Backlights |
|---|---|
Use Scenario: Multi-color status feedback on industrial HMIs and medical device panels requiring precise hue and intensity control. IC Role / Device Role / Timing Role: LED driver providing independent 8-bit PWM per channel with synchronized group dimming for uniform ambient adaptation. Use Value: Eliminates external MCU PWM timers and reduces firmware overhead via I²C register writes - enabling smooth color transitions with <500 μs oscillator wake-up latency. |
Use Scenario: Low-power backlighting for membrane keypads in portable test equipment and handheld scanners. IC Role / Device Role / Timing Role: Constant-current LED driver with 2.3 V minimum supply support, enabling direct operation from single-cell Li-ion batteries. Use Value: 25 mA per channel drives standard 20 mA LEDs without external transistors; HVSON8 footprint saves >40 % board area versus TSSOP10 alternatives. |
| LCD Backlight Control | RGBA Color Mixing Modules |
Use Scenario: Edge-lit LCD backlight dimming in automotive infotainment displays where EMI and thermal constraints limit discrete solutions. IC Role / Device Role / Timing Role: Group PWM controller (190 Hz) modulating four parallel LED strings with shared brightness scaling and flicker-free operation. Use Value: 16-step group dimming avoids visible stepping artifacts; 5.5 V tolerant inputs simplify interface with 5 V display power rails. |
Use Scenario: Compact embedded lighting modules for smart home devices requiring tunable white and saturated color output. IC Role / Device Role / Timing Role: RGBA driver supporting simultaneous individual brightness (1.5625 kHz) and group blink (0.09–24 Hz) for dynamic effects. Use Value: Dual-resolution group control (64/256-step) enables both high-speed marquee chasing and slow ambient pulsing - all via two I²C registers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59116IPWR | 16-channel, 12-bit PWM, 1 MHz I²C, but no group blink mode; requires external 25 MHz crystal or oscillator | Higher channel count suits larger displays; lacks integrated blink timing engine and 40× power advantage | Select when >4 channels or >8-bit individual resolution is required; avoid for ultra-low-power or space-constrained RGBA designs |
| IS31FL3728-QFLS4-TR | 28-channel, 8-bit PWM, 1 MHz I²C, built-in auto-breathing; operates down to 2.7 V only - no 2.3 V support | Breathing effect engine simplifies fade-in/out; missing group dimming mode and HVSON8 thermal profile | Prefer for complex breathing sequences in consumer electronics; PCA9632TK,118 remains superior for 2.3 V battery operation and thermal-limited layouts |
Compared with TLC59116IPWR and IS31FL3728-QFLS4-TR, the PCA9632TK,118 delivers best-in-class power efficiency and smallest footprint for 4-channel RGBA systems - especially where 2.3 V operation, integrated blink timing, and HVSON8 thermal performance are critical.
Availability
PCA9632TK,118 is available at Aetrix Electronics and suitable for RGB status indicators, keypad backlights, and LCD backlighting requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for PCA9632TK,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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with broad expertise in I²C peripheral integration and low-power mixed-signal design.
The PCA9632TK,118 belongs to NXP's Fm+ LED driver product line, engineered specifically for energy-efficient, space-constrained color-mixing interfaces in portable and embedded human-machine interaction systems.
FAQ
What is the I²C target address of the PCA9632TK,118?
The PCA9632TK,118 uses a fixed 7-bit I²C target address of 0xC0 (1100000b) because its HVSON8 package omits hardware address pins A0 and A1. This differs from the 10-pin TSSOP version, which supports four programmable addresses. The PCA9632TK,118 responds to write operations at 0xC0 and read operations at 0xC1, and does not support address pin configuration.
Does the PCA9632TK,118 support both open-drain and totem-pole output configurations?
Yes, the PCA9632TK,118 supports both output types via the OUTDRV bit (bit 2) in MODE2 register (0x01). When cleared (0), outputs operate in open-drain mode with 25 mA sink capability; when set (1), they operate in totem-pole mode with 25 mA sink / 10 mA source. The PCA9632TK,118 default is open-drain at power-up, and configuration is fully software-controlled.
How does group blinking work on the PCA9632TK,118?
Group blinking on the PCA9632TK,118 is enabled by setting the DMBLNK bit (bit 5) in MODE2 register. It uses GRPFREQ (0x07) to set blink period (24 Hz to 0.09 Hz) and GRPPWM (0x06) for duty cycle - with 64-step resolution (0–98.4 %) for 6–24 Hz and 256-step resolution (0–99.6 %) for 0.09–6 Hz. All four LED outputs blink synchronously under this control.
What is the purpose of the exposed thermal pad on the PCA9632TK,118 HVSON8 package?
The exposed thermal pad on the PCA9632TK,118 HVSON8 package (SOT908-1) is electrically connected to VSS and serves as the primary thermal conduction path. For reliable operation at full 25 mA per channel, it must be soldered to a PCB thermal pad with ≥4 thermal vias to internal ground planes. This reduces junction-to-board thermal resistance by up to 40 % compared to non-connected pads.
Can the PCA9632TK,118 drive LEDs directly without external components?
Yes, the PCA9632TK,118 can drive standard 20 mA LEDs directly: each output supports 25 mA sink at 5 V with 5.5 V tolerance, and internal current limiting eliminates need for external resistors in constant-current mode. However, for LEDs with integrated Zener protection (e.g., some automotive-grade types), open-drain mode must be used to prevent IC overheating - as specified in the PCA9632TK,118 datasheet Section 7.6.
PCA9632TK,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Power Switch
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 5.5V
- Current - Output / Channel:
- 25mA
- Frequency:
- 100kHz ~ 1MHz
- Dimming:
- I2C
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSON (3x3)
PCA9632TK,118 FAQ
1.How can I place an order for PCA9632TK,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9632TK,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 PCA9632TK,118 reliable?
The price and inventory of PCA9632TK,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9632TK,118 is usually 5 days.
3.What payment methods are accepted for PCA9632TK,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9632TK,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9632TK,118?
PCA9632TK,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9632TK,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 PCA9632TK,118?
For technical support, including PCA9632TK,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9632TK,118 requirements.
6.How does Aetrix verify that PCA9632TK,118 is sourced from the original manufacturer or authorized distributors?
All PCA9632TK,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 PCA9632TK,118 meets industry standards.
7.What is the process for return or replacement of PCA9632TK,118?
All PCA9632TK,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9632TK,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 PCA9632TK,118 part is unused and in its original packaging.
Return procedure for PCA9632TK,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9632TK,118 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
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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