Microchip Technology HV9980WG-G

Overview

HV9980WG-G from Microchip Technology is a 3-channel LED array driver IC featuring integrated 200V, 25Ω (typ) MOSFETs, programmable output current up to 80 mA per channel, and TTL-compatible PWM dimming inputs. It operates in constant-current buck mode with three-phase synchronous switching at 1/6 of an external clock frequency, enabling uniform illumination for high-brightness LCD backlighting systems.

For engineers reviewing the HV9980WG-G datasheet, HV9980WG-G pinout, HV9980WG-G application, or HV9980WG-G equivalent, this device supports precise per-channel current regulation via external RSENSE resistors and REF voltage inputs, offers individual short-circuit protection with 200 µs skip-mode recovery, and requires coordinated AGND/PGND layout for noise immunity in multi-string LED drivers.

Technical Context

The HV9980WG-G implements peak-current-mode PWM control with external clock synchronization, dividing the input CLK frequency by six to set each channel's 500 kHz max switching frequency. Its three independent channels operate 120° out-of-phase to minimize input/output ripple current and improve thermal distribution across the 24-lead SOW package.

Each channel integrates a 200V-rated power MOSFET with 25Ω typical on-resistance, current sense comparator with 1.15V typical short-circuit threshold, leading edge blanking (120–220 ns), and slope compensation capability via CS pin configuration. Overtemperature protection triggers at 140°C with 60°C hysteresis, and VDD undervoltage lockout releases at 5.3V with 500 mV hysteresis.

Key Specifications

Pinout & Package

HV9980WG-G is housed in a 24-lead SOW (Wide Body) package measuring 15.40 × 7.50 mm with 1.27 mm pitch and 2.65 mm max height. The package is Pb-free/RoHS-compliant (G suffix) and features separate PGND1–3 pins for low-noise power return routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-channel LED driver applications.

Compared with AL8863Q-7 and MPQ3367-AEC1, HV9980WG-G uniquely combines 200V integrated MOSFETs, 3-phase interleaving, and per-channel short-circuit recovery - making it the only option among the three capable of direct high-voltage buck operation in LCD backlight and projector LED engines without external HV switches.

Availability

HV9980WG-G is available at Aetrix Electronics and suitable for LCD backlighting, DLP projector LED engines, and RGB decorative lighting requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for HV9980WG-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and timing solutions, with a focus on embedded control and power management.

HV9980WG-G belongs to Microchip's high-voltage LED driver product line, designed specifically for energy-efficient, multi-string constant-current LED lighting in display and projection systems requiring integrated 200V switching and precise current regulation.

FAQ

What is the maximum output current per channel for HV9980WG-G?

The HV9980WG-G supports programmable output current up to 80 mA per channel, set by the external RSENSE resistor value and REF input voltage according to IO = VREF / RSENSE – ½ΔIO. This range accommodates standard 20–80 mA LED strings used in backlighting and projection applications.

Does HV9980WG-G require an external clock signal, and what is its function?

Yes, HV9980WG-G requires an external clock signal applied to the CLK pin to synchronize all three channels. The internal frequency divider sets each channel's switching frequency to exactly 1/6 of the CLK input frequency, enabling precise phase alignment and ripple reduction - a core requirement for stable LED current regulation.

How does HV9980WG-G handle short-circuit conditions on individual LED strings?

HV9980WG-G provides per-channel short-circuit protection: when overcurrent is detected at CS1–CS3, the corresponding channel shuts down for 200 µs in skip mode and automatically recovers once the fault clears. This preserves operation of the remaining two channels and avoids full-system shutdown during partial failures.

What is the purpose of separate PGND1–PGND3 pins on HV9980WG-G?

The separate PGND1–PGND3 pins on HV9980WG-G provide dedicated low-impedance return paths for each channel's high-current DRAIN and RSENSE nodes, minimizing crosstalk and ground bounce. All PGND pins plus AGND must be tied together on the PCB - but routed separately to the input capacitor to preserve noise isolation.

Is HV9980WG-G compatible with standard TTL-level PWM dimming signals?

Yes, HV9980WG-G accepts standard TTL-compatible PWM dimming inputs on PWMD1–PWMD3, with guaranteed recognition of logic-high ≥2V and logic-low ≤0.8V. Each input includes an internal 200 kΩ pull-down resistor, allowing direct connection to microcontroller GPIOs without external biasing components.