HV9861ALG-G
LTBLED DRIVER W/ AVERAGE-MODE CONSTANT CURRENT CONTROL
HV9861ALG-G
LTBLED DRIVER W/ AVERAGE-MODE CONSTANT CURRENT CONTROL
Description
General part information
HV9861A Series
The HV9861A is a patented, average-mode, constant current control LED driver IC operating in a constant off-time mode. Unlike the HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves the accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%.
The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. Internal over-temperature protection is provided. The internally regulated voltage (VDD) for the HV9861A is 7.5V.
The IC can be powered from a 15 - 450V supply. A PWM dimming input is provided that accepts an external control TTL-compatible signal. The output current can be programmed by an internal 270mV reference, or controlled externally through a 0 - 1.5V dimming input.
Technical Specifications
Parameters and characteristics for this part
| Specification | HV9861ALG-G |
|---|---|
| Applications | Backlight, Lighting, Signage |
| Dimming | PWM, Analog |
| Internal Switch(s) | No |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Package Length | 0.154 in |
| Package Name | 8-SOIC |
| Package Width | 3.9 mm |
| Topology | Step-Down (Buck) |
| Type | DC DC Controller |
| Voltage - Supply (Max) | 450 V |
| Voltage - Supply (Min) | 15 V |
Pricing
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