PCA9551D,118
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NXP USA Inc. PCA9551D,118

Manufacturer No:
PCA9551D,118
Manufacturer:
NXP USA Inc.
Package:
Tape & Reel (TR)
Description:
IC LED DRIVER PS PWM 25MA 16SO
Delivery:
Payment:
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Product Introduction

Overview

The PCA9551D,118 is an 8-bit I²C-bus LED driver with programmable blink rates, manufactured by NXP USA Inc. This device is designed to blink LEDs in I²C-bus and SMBus applications, helping to limit bus traffic or free up the I²C-bus controller. It features an internal oscillator that eliminates the need for external components and supports two fully programmable blink rates.

Key Specifications

ParameterValue
Package TypeSO16 (plastic small outline package, 16 leads)
Operating Voltage2.3 V to 5.5 V
Output Sink Current per Bit25 mA
Output Sink Current per Package100 mA
Clock Frequency0 Hz to 400 kHz
Address Pins3 (allowing 8 devices on the same bus)
Reset TypeActive LOW hardware reset, Power-On Reset (POR)
ESD ProtectionExceeds 2000 V HBM, 150 V MM, 1000 V CDM
Operating Temperature-40 °C to +85 °C

Key Features

  • 8 LED drivers with programmable on, off, and flashing states
  • Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.148 Hz and 38 Hz
  • Internal oscillator requiring no external components
  • I²C-bus interface logic compatible with SMBus
  • Input/outputs not used as LED drivers can be used as regular GPIOs
  • No glitch on power-up and supports hot insertion
  • Low standby current
  • Edge rate control on outputs
  • Noise filter on SCL/SDA inputs

Applications

The PCA9551D,118 is suitable for various applications where LED control and I²C-bus communication are required. These include:

  • Automotive lighting systems
  • Industrial control panels
  • Consumer electronics with LED indicators
  • Medical devices requiring LED status indicators
  • Any system needing to manage LED status via I²C-bus

Q & A

  1. What is the PCA9551D,118 used for?
    The PCA9551D,118 is an 8-bit I²C-bus LED driver used to control LEDs in I²C-bus and SMBus applications.
  2. What are the programmable blink rates of the PCA9551D,118?
    The device supports two fully programmable blink rates between 0.148 Hz and 38 Hz.
  3. What is the maximum output sink current per bit?
    The maximum output sink current per bit is 25 mA.
  4. What is the operating voltage range of the PCA9551D,118?
    The operating voltage range is from 2.3 V to 5.5 V.
  5. Does the PCA9551D,118 have ESD protection?
    Yes, it exceeds 2000 V HBM, 150 V MM, and 1000 V CDM.
  6. Can unused I/Os be used as GPIOs?
    Yes, input/outputs not used as LED drivers can be used as regular GPIOs.
  7. What is the clock frequency range of the I²C-bus interface?
    The clock frequency range is from 0 Hz to 400 kHz.
  8. How many devices can operate on the same bus?
    Up to 8 devices can operate on the same bus due to the three hardware address pins.
  9. What is the operating temperature range of the PCA9551D,118?
    The operating temperature range is from -40 °C to +85 °C.
  10. Does the PCA9551D,118 support hot insertion?
    Yes, it supports hot insertion.

Product Attributes

Type:Power Switch
Topology:- 
Internal Switch(s):Yes
Number of Outputs:8
Voltage - Supply (Min):2.3V
Voltage - Supply (Max):5.5V
Voltage - Output:- 
Current - Output / Channel:25mA
Frequency:- 
Dimming:PWM
Applications:- 
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:16-SO
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Similar Products

Part Number PCA9551D,118 PCA9552D,118 PCA9531D,118 PCA9550D,118 PCA9551D,112
Manufacturer NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc. NXP USA Inc.
Product Status Active Active Active Active Obsolete
Type Power Switch Power Switch Linear Linear Power Switch
Topology - - - - -
Internal Switch(s) Yes Yes Yes Yes Yes
Number of Outputs 8 16 8 2 8
Voltage - Supply (Min) 2.3V 2.3V 2.3V 2.3V 2.3V
Voltage - Supply (Max) 5.5V 5.5V 5.5V 5.5V 5.5V
Voltage - Output - - - - -
Current - Output / Channel 25mA 25mA 25mA 25mA 25mA
Frequency - - - 400kHz -
Dimming PWM - I²C I²C PWM
Applications - - Backlight - -
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) 24-SOIC (0.295", 7.50mm Width) 16-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SO 24-SO 16-SO 8-SO 16-SO

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