Overview
The CAT9532HV6I-GT2, produced by onsemi, is a CMOS device designed as a 16-bit parallel input/output port expander optimized for LED dimming control. This device is particularly suited for applications requiring precise LED dimming, such as backlighting and RGB color mixing. It operates within the I2C and SMBus compatible protocols, helping to limit bus traffic and free up the bus master's timer. The CAT9532HV6I-GT2 features an internal oscillator and two programmable PWM signals, allowing for the control of LED outputs with adjustable frequency and duty cycle.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.3 | - | 5.5 | V |
| Supply Current (Operating mode) | - | 250 | 550 | μA |
| Standby Current | - | 2.1 | 5.0 | μA |
| Low Level Input Voltage (VIL) | -0.3 | - | 0.8 VCC | V |
| High Level Input Voltage (VIH) | 0.7 VCC | - | 5.5 | V |
| Low Level Output Current (IOL) | 9 | - | - | mA (VCC = 2.3 V) |
| Maximum Output Current per I/O | - | - | 25 | mA |
| Total Current Sunk by All I/Os | - | - | 400 | mA |
| Operating Ambient Temperature | -40 | - | 85 | °C |
| I2C Bus Frequency | 100 | - | 400 | kHz |
Key Features
- 16-bit parallel input/output port expander optimized for LED dimming control
- Drives 16 LEDs directly with each LED capable of being turned ON, OFF, or blinking at one of two programmable rates
- 256 brightness steps for dimming control
- Internal oscillator and two PWM signals for LED outputs
- Programmable frequency and duty cycle for each PWM signal
- I2C and SMBus compatible
- 5.0 V tolerant I/Os
- Active low reset input
- I/Os can be used as GPIOs
- 400 kHz I2C bus compatible
Applications
- Backlighting
- RGB color mixing
- Sensors control
- Power switches and push-buttons
- Alarm systems
Q & A
- What is the primary function of the CAT9532HV6I-GT2?
The CAT9532HV6I-GT2 is a 16-bit parallel input/output port expander optimized for LED dimming control.
- How many LEDs can the CAT9532HV6I-GT2 drive directly?
The device can drive 16 LEDs directly.
- What is the range of brightness steps provided by the CAT9532HV6I-GT2?
The device provides 256 brightness steps for dimming control.
- Is the CAT9532HV6I-GT2 compatible with I2C and SMBus protocols?
- What is the maximum output current per I/O and the total current sunk by all I/Os?
The maximum output current per I/O is 25 mA, and the total current sunk by all I/Os must not exceed 400 mA.
- What is the operating voltage range of the CAT9532HV6I-GT2?
The device operates within a supply voltage range of 2.3 V to 5.5 V.
- Can the I/Os of the CAT9532HV6I-GT2 be used as GPIOs?
- What is the frequency range of the I2C bus compatible with the CAT9532HV6I-GT2?
The device is compatible with I2C bus frequencies up to 400 kHz.
- What are some common applications of the CAT9532HV6I-GT2?
- Does the CAT9532HV6I-GT2 have an internal oscillator?
