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PCA9634PW
+NomenclatureLED Lighting Driver ICs 8BIT I2C FM+ TP LED CON RST OE
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FabricantNXP semiconducteurs
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Pièce fabricant #PCA9634PW
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Fiche technique PCA9634PW DataSheet
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En stock3157
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Spécifications
| Attribut | Valeur |
| Packaging | Tube |
| Standard Pack Qty | 1875 |
Présentation
Description
Key features include an adjustable frequency from 31 Hz to 976 Hz and a wide supply voltage range from 2.3 V to 5.5 V, ensuring compatibility with most microcontrollers. The PCA9634PW supports a fast-mode I²C bus interface, with data rates up to 400 kbit/s, enabling efficient communication in complex systems.
Additionally, the device offers an active LOW hardware reset pin for easy initialization and a low standby current, ideal for battery-powered applications. It incorporates a built-in oscillator and a PWM register for each LED channel, providing precise control over LED brightness levels. The PCA9634PW is packaged in a compact TSSOP housing, making it suitable for space-constrained designs.
Overall, the PCA9634PW is a versatile solution for developers seeking to implement advanced LED control in consumer electronics, automotive, and industrial applications.
Equivalent
1. TI's TCA9534, which offers similar I2C interfaces and GPIO functionality.
2. Microchip's MCP23008, an I2C-based I/O expander.
3. ON Semiconductor's CAT9532, a 16-bit I2C LED driver.
These alternatives may have slightly different features, so it's crucial to compare specifications to ensure compatibility with your application.
Features
1. Output Channels: 8 LED driver outputs, each with a programmable constant current sink.
2. PWM Control: 8-bit resolution for individual brightness control using Pulse Width Modulation (PWM).
3. I2C Interface: Supports standard (100 kHz), fast (400 kHz), and fast-mode plus (1 MHz) I2C bus frequencies.
4. Output Current: Each channel can be individually programmed for 25 mA maximum current.
5. Supply Voltage: Operates with a supply voltage range from 2.3 V to 5.5 V.
6. Low Standby Current: Minimizes power consumption when not actively driving LEDs.
7. External Reset: Features an external reset pin for initialization.
8. Addressing: Supports multiple device addresses, allowing for up to 126 devices on the same bus.
9. Various Modes: Includes normal, all-call, and software reset I2C bus address modes.
10. Protection Features: Integrated thermal shutdown to protect against overheating.
These features make the PCA9634PW suitable for a wide range of lighting and indication applications in electronic devices.
Pinout
- Pin Count: 16 pins
- Functions:
- VDD (Pin 16): Supply voltage.
- VSS (Pin 8): Ground.
- SDA (Pin 15): Serial data for I²C-bus.
- SCL (Pin 14): Serial clock for I²C-bus.
- LED Outputs (Pin 1-7, 9-13): 8 programmable LED outputs (LED0 to LED7) for controlling individual LEDs.
- OE (Pin 9): Output enable; active low, controls the LED drivers.
- A0, A1, A2 (Pin 4, 3, 2): Address selection pins for I²C addressing.
The PCA9634PW is utilized for driving LEDs with PWM control, offering adjustable brightness and color mixing capabilities. Its I²C-bus interface ensures easy integration into systems.