| tatus |
| Active: In Production. |
| Description | ||||||
The MAX16832A/MAX16832C operate from a +6.5V to +65V input voltage range and can provide an output current up to 700mA, if operated up to a temperature of +125°C, or up to a 1A if operated up to a temperature of +105°C. A high-side current-sense resistor adjusts the output current, and a dedicated pulse-width modulation (PWM) input enables pulsed LED dimming over a wide range of brightness levels. These devices are well suited for applications requiring a wide input voltage range. The high-side current sensing and an integrated current-setting circuitry minimize the number of external components while delivering an average output current with ±3% accuracy. A hysteretic control method ensures excellent input supply rejection and fast response during load transients and PWM dimming. The MAX16832A allows 10% current ripple, and the MAX16832C allows 30% current ripple. Both devices operate up to a 2MHz switching frequency, thus allowing the use of small-sized components. The MAX16832A/MAX16832C offer an analog dimming feature that reduces the output current by applying an external DC voltage below the internal 2V threshold voltage from TEMP_I to GND. TEMP_I also sources 25µA to a negative temperature coefficient (NTC) thermistor connected between TEMP_I and GND, thus providing an analog thermal-foldback feature that reduces the LED current when the temperature of the LED string exceeds a specified temperature point. Additional features include thermal-shutdown protection. The MAX16832A/MAX16832C operate over the -40°C to +125°C automotive temperature range and are available in a thermally enhanced 8-pin SO package. | ||||||
Download
An evaluation kit is available: MAX16832CEVKIT
| Key Features | Applications/Uses | |
|
|
| Key Specifications: High Brightness LED Drivers | |||||||||||||||||||
| Part Number | Topology | VIN (V) |
VIN (V) |
Extended VIN with External Bias | LED Channels | ILED per Channel (A) |
LED String Volt. | Internal Pwr. MOSFETs | Freq. | PWM Dimming Freq. (kHz) |
PWM Dimming Ratio | EV Kit | Price | ||||||
| min | max | max | max | max | max | See Notes | |||||||||||||
| MAX16832 | Buck | 6.5 | 65 | No |
|
0.7 | 63V | Yes | 20kHz to 2MHz | 20 | 1:5000 | Yes | $1.31 @1k | ||||||
| See All High Brightness LED Drivers (26) | |||||||||||||||||||
| Diagram |
 Typical Application Circuit |
source：ShenZhen henlito electronic co.,ltd.
web:www.henlito.com
