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NXP Semiconductors PCA9553DP/01,118
- Part No.:
- PCA9553DP/01,118
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
PCA9553DP/01,118.pdf
- Description:
- IC LED DRVR LIN I2C 25MA 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,380
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Product details
Overview
The PCA9553DP/01 from NXP Semiconductors is a 4-bit I²C-bus LED blinker IC with two independent programmable blink rates (0.172–44 Hz), 4 open-drain LED drivers (25 mA per output, 100 mA total), and integrated oscillator-eliminating external timing components. It operates from 2.3 V to 5.5 V and supports standard/fast-mode I²C (up to 400 kHz), enabling autonomous LED control in embedded status indicators without burdening the host MCU's timer or bus bandwidth.
For engineers reviewing the PCA9553DP/01 datasheet, PCA9553DP/01 pinout, PCA9553DP/01 application, or PCA9553DP/01 equivalent, this device delivers deterministic blink timing, GPIO reuse capability, SMBus-compatible I²C interface, low standby current (1.9 µA), and robust ESD protection (2000 V HBM)-critical for industrial HMI, telecom front panels, and battery-sensitive IoT status displays.
Technical Context
The PCA9553DP/01 integrates a precision internal oscillator feeding two independent PWM channels (BLINK0/BLINK1), each with dedicated prescaler (PSC0/PSC1) and duty-cycle (PWM0/PWM1) registers. Blink period resolution is determined by (PSCn + 1)/44 Hz, supporting fine-grained timing control across its full 0.172–44 Hz range.
Each of the four LEDn outputs functions as an open-drain driver configurable via the LS0 register: static HIGH/LOW, high-impedance input, or blinking at either BLINK0 or BLINK1 rate. Unused LED pins serve as general-purpose I/Os with externally pulled-up outputs and input-read capability through the INPUT register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Blink frequency range | 0.172 Hz to 44 Hz (5.82 s to 23 ms period) - enables slow status indication and rapid alert flashing in same device |
| Output sink current | 25 mA per LED pin, 100 mA total package - drives standard LEDs directly without external transistors |
| I²C interface speed | Up to 400 kHz Fast-mode - compatible with modern microcontrollers and reduces bus transaction time |
| Supply voltage range | 2.3 V to 5.5 V - interoperable with 3.3 V and 5 V systems, including mixed-voltage designs |
| Standby current | 1.9 µA typical at 5.5 V - extends battery life in portable or energy-harvesting applications |
| ESD protection | 2000 V HBM, 150 V MM, 1000 V CDM - ensures robustness during handling and board assembly |
| Operating temperature | −40 °C to +85 °C - qualified for industrial and automotive cabin environments |
Pinout & Package
TSSOP8 package (SOT505-1): plastic thin shrink small outline, 8-lead, 3 mm body width, lead pitch 0.65 mm, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LED0 (Pin 1) | Open-drain LED driver/output | Configurable as blink output (BLINK0/BLINK1), static ON/OFF, or GPIO input/output |
| LED1 (Pin 2) | Open-drain LED driver/output | Independent control identical to LED0; supports mixed blink/static operation per pin |
| LED2 (Pin 3) | Open-drain LED driver/output | Enables multi-state visual feedback (e.g., power + activity + fault on single IC) |
| VSS (Pin 4) | Ground reference | Mandatory connection to system ground; no internal ground plane tie in TSSOP8 variant |
| LED3 (Pin 5) | Open-drain LED driver/output | Fourth independent channel; allows quad-LED status without GPIO expansion |
| SCL (Pin 6) | I²C serial clock input | Accepts standard/fast-mode clocks up to 400 kHz; includes noise filtering |
| SDA (Pin 7) | I²C bidirectional data line | Open-drain interface with internal pull-down; requires external pull-up resistor |
| VDD (Pin 8) | Positive supply voltage | Power source for logic and output drivers; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent blink engines | BLINK0 and BLINK1 operate simultaneously with separate frequency/duty-cycle registers-enables concurrent slow status + fast alert patterns |
| No external timing components | Integrated oscillator eliminates need for crystals, RC networks, or external clocks-reduces BOM count and layout area |
| GPIO reuse capability | Unused LED pins function as bidirectional I/Os with input-read and pull-up-driven output-adds flexibility without extra ICs |
| SMBus-compatible I²C interface | Fully compliant with SMBus timeout, arbitration, and protocol rules-ensures interoperability in server and telecom management buses |
| Controlled edge rates | Minimizes ground bounce and EMI during output switching-critical for noise-sensitive analog or RF subsystems |
Applications
| Industrial HMI Status Panel | Telecom Rack Indicator Module |
|---|---|
|
Use Scenario: Front-panel LED indicators on PLC I/O modules showing power, run, fault, and communication status. IC Role / Device Role / Timing Role: PCA9553DP/01 acts as autonomous blink controller-freeing the main MCU from polling/timing tasks while maintaining precise 2 Hz fault flash and steady 0.5 Hz activity pulse. Use Value: Reduces firmware complexity and I²C bus traffic by >70% versus software-timed GPIO toggling; enables deterministic visual feedback under heavy CPU load. |
Use Scenario: Multi-slot telecom chassis with per-blade status LEDs indicating link activity, sync loss, and alarm conditions. IC Role / Device Role / Timing Role: PCA9553DP/01 provides synchronized blink timing across 4 blades using shared I²C bus-each LED independently assigned to BLINK0 (1 Hz) or BLINK1 (10 Hz). Use Value: Eliminates need for 4 separate timers or dedicated blink ICs; supports hot-swap detection via SDA/SCL glitch immunity and controlled edge rates. |
| IoT Edge Gateway Power Indicator | Medical Device Ready/Standby Display |
|
Use Scenario: Battery-powered smart gateway with low-power sleep mode requiring visible power-on confirmation and periodic wake indicator. IC Role / Device Role / Timing Role: PCA9553DP/01 drives dual-color LED (via external transistor) with green steady-on (power) and red 0.25 Hz blink (wake event), powered from 3.3 V LDO. Use Value: Achieves 1.9 µA standby current-extends battery life beyond 1 year; internal POR ensures known LED state at power-up without MCU initialization. |
Use Scenario: Portable ultrasound probe with status LEDs indicating ready-to-scan (green), standby (amber), and error (red) states. IC Role / Device Role / Timing Role: PCA9553DP/01 manages three distinct visual states using two blink rates and static outputs-green ON, amber BLINK0 (0.5 Hz), red BLINK1 (4 Hz). Use Value: Guarantees consistent blink timing regardless of host processor load or OS latency; meets IEC 60601-1 visual signaling requirements for medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED blinker applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59108IPWR | 8-channel, higher drive (25 mA/channel), but no built-in blink engine-requires MCU PWM or external timing | Needs host-controlled PWM generation; unsuitable for autonomous blink where MCU is asleep or busy | Select when more than 4 outputs are needed and MCU has available PWM resources |
| PCA9632DP,118 | 4-channel, integrated blink engine, but supports only one programmable blink rate (not two) | Limited to uniform blink timing across all outputs; cannot mix slow + fast patterns simultaneously | Select when dual-rate independence is unnecessary and lower cost is prioritized |
Compared with TLC59108IPWR and PCA9632DP,118, the PCA9553DP/01 uniquely delivers two fully independent blink engines in a compact TSSOP8 package-enabling differentiated visual signaling (e.g., heartbeat + fault flash) without MCU intervention or additional timing circuitry.
Availability
The PCA9553DP/01 is available at Aetrix Electronics and suitable for industrial HMI, telecom rack indicators, and IoT edge gateway applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for PCA9553DP/01 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 markets, with deep expertise in I²C peripheral design and mixed-signal integration.
The PCA9553DP/01 belongs to NXP's I²C-bus LED driver family, engineered specifically to offload LED timing tasks from host processors in resource-constrained embedded systems-prioritizing low power, autonomous operation, and bus efficiency.
FAQ
What is the fixed I²C address of the PCA9553DP/01?
The PCA9553DP/01 has a fixed 7-bit I²C slave address of 0xC2 (1100010b), where the R/W bit is appended during transmission. This address is hardwired and differs from the PCA9553DP/02 (0xC3), allowing both variants to coexist on the same I²C bus without address conflict. The PCA9553DP/01 address is confirmed in Figure 5 of the NXP datasheet Rev. 06.
Can unused LED pins on the PCA9553DP/01 be used as general-purpose inputs?
Yes-the PCA9553DP/01 supports GPIO input mode on LED0–LED3 pins. To use as input, configure the corresponding bit in the LS0 register to '01' (high-impedance), then read the pin state via the INPUT register. External pull-up/pull-down resistors must be applied, and the input voltage must stay within −0.5 V to VDD + 0.5 V per datasheet Table 13.
How do I program a 2 Hz blink with 50 % duty cycle on LED2 using the PCA9553DP/01?
To set LED2 to blink at 2 Hz, 50 % duty cycle: write PSC0 = 87 (0x57) to achieve period = (87+1)/44 ≈ 2 s → 0.5 Hz, so instead use PSC1 = 87 for BLINK1; write PWM1 = 128 (0x80) for 50 % duty cycle (256−128)/256; then set bits 5:4 of LS0 register to '11' to assign LED2 to BLINK1. Full sequence requires I²C START, address 0xC2, subaddress 0x03 (PSC1), data 0x57, etc.-as detailed in Table 11.
Does the PCA9553DP/01 require external components for its internal oscillator?
No-the PCA9553DP/01 contains a fully integrated oscillator with no external components required. Its timing accuracy is specified over temperature and supply voltage (Figures 18–19), with typical variation ±20 % across −40 °C to +85 °C and 2.3 V to 5.5 V. This eliminates crystal, capacitor, or resistor dependencies, reducing BOM cost and PCB footprint.
What is the maximum sink current per LED pin on the PCA9553DP/01, and how is total package current limited?
The PCA9553DP/01 supports up to 25 mA sink current per LED pin (LED0–LED3), with absolute maximum total package sink current limited to 100 mA (Table 12). This means all four outputs can operate at 25 mA simultaneously. Exceeding 100 mA risks thermal shutdown or damage; design must ensure sum of all active LED currents stays ≤100 mA, verified per Table 13's IOL specifications at given VDD.
PCA9553DP/01,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 2.3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 25mA
- Frequency:
- 400kHz
- Dimming:
- I2C
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
PCA9553DP/01,118 FAQ
1.How can I place an order for PCA9553DP/01,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9553DP/01,118 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 PCA9553DP/01,118 reliable?
The price and inventory of PCA9553DP/01,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9553DP/01,118 is usually 5 days.
3.What payment methods are accepted for PCA9553DP/01,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9553DP/01,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9553DP/01,118?
PCA9553DP/01,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9553DP/01,118 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 PCA9553DP/01,118?
For technical support, including PCA9553DP/01,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9553DP/01,118 requirements.
6.How does Aetrix verify that PCA9553DP/01,118 is sourced from the original manufacturer or authorized distributors?
All PCA9553DP/01,118 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 PCA9553DP/01,118 meets industry standards.
7.What is the process for return or replacement of PCA9553DP/01,118?
All PCA9553DP/01,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCA9553DP/01,118, 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 PCA9553DP/01,118 part is unused and in its original packaging.
Return procedure for PCA9553DP/01,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA9553DP/01,118 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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