Microchip Technology HV9982K6-G

Overview

HV9982K6-G from Microchip Technology is a three-channel, closed-loop, peak-current-mode PWM LED driver IC designed to control constant-output-current buck, boost, or SEPIC converters. It delivers ±0.2A/±0.4A gate drive for external N-channel MOSFETs, supports 120° out-of-phase switching at 1/12th of an external clock frequency, and integrates output short-circuit, over-voltage, and hiccup-mode protection. It is engineered for RGB backlight and multi-string white-LED lighting systems.

For engineers reviewing the HV9982K6-G datasheet, HV9982K6-G pinout, HV9982K6-G application, or HV9982K6-G equivalent, key selection considerations include its triple-channel current regulation architecture, programmable slope compensation, analog/PWM dimming flexibility, 40-V input tolerance, and 40-lead QFN thermal performance (θ_JA = 24°C/W).

Technical Context

The HV9982K6-G implements independent peak-current-mode control per channel with transconductance op-amps (G_m = 600 µA/V, GBW = 1 MHz) and tri-state outputs referenced to individual REF pins (0–1.25 V range). Each channel uses dedicated CS, COMP, FDBK, OVP, FLT, and GATE terminals with 100 ns leading-edge blanking and 12R:1R feedback divider for stable loop response.

Switching is synchronized to an external TTL-compatible CLK signal; channels operate at f_CLK/12 with 120° phase offsets to minimize input ripple. Fault management employs a user-programmable hiccup timer via SKIP-pin capacitor and dual-threshold (0.1 V / 5.0 V) detection for automatic recovery from open-LED or short-circuit events.

Key Specifications

Pinout & Package

HV9982K6-G is housed in a 40-lead QFN package (6 mm × 6 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Microchip DS20005295B, including dedicated ground returns (GND, GND1–GND3) for noise isolation and star-ground layout compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AL8863-7DT-13 and LM3445MM/NOPB, HV9982K6-G uniquely delivers three independent, phase-interleaved current loops with integrated disconnect FET control-enabling high-ratio PWM dimming, per-string fault containment, and reduced input filter size in RGB/multi-string architectures.

Availability

HV9982K6-G is available at Aetrix Electronics and suitable for RGB backlight systems, multi-string white LED lighting, automotive center stack displays, industrial HMI panels, and architectural signage requiring stable component supply and long-term production continuity.

Supply support for HV9982K6-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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and timing solutions for industrial, automotive, and consumer applications.

HV9982K6-G belongs to Microchip's high-reliability LED driver product line, designed specifically for precision multi-channel constant-current regulation in demanding display and lighting systems where thermal robustness, fault resilience, and dimming fidelity are critical.

FAQ

What topology configurations does the HV9982K6-G support?

The HV9982K6-G supports buck, boost, and SEPIC converter topologies per channel via peak-current-mode control. Each channel operates independently with dedicated CS, COMP, FDBK, and GATE pins. The IC requires external N-channel MOSFETs and inductors; it does not integrate power switches. Switching frequency is derived from an external CLK signal divided by 12, enabling precise system-level synchronization across all three channels in HV9982K6-G designs.

How does the HV9982K6-G implement PWM dimming with analog input compatibility?

HV9982K6-G implements analog-controlled PWM dimming using the RAMP pin and S1/S2 configuration. When S1 is high, a 0–2.0 V analog signal applied to PWMD1–PWMD3 is compared against a ramp waveform generated across an external capacitor at RAMP. This produces variable-duty-cycle PWM outputs per channel without requiring external timers. The RAMP frequency is programmable from 100 Hz to 1.25 kHz, ensuring flicker-free dimming down to 0.01% duty cycle in HV9982K6-G applications.

What protection mechanisms are built into the HV9982K6-G?

HV9982K6-G integrates output short-circuit protection, over-voltage protection (OVP1–OVP3), open-LED detection, and hiccup-mode fault recovery. Upon OVP or short-circuit detection, FLT1–FLT3 immediately disable external disconnect FETs while GATE1–GATE3 shut down. The hiccup timer-programmed via a capacitor on SKIP-ensures full discharge of COMP-network integrators before automatic restart. UVLO (6.0–6.5 V) on VDD prevents operation outside safe LDO regulation range in HV9982K6-G systems.

Can the HV9982K6-G operate without using its internal linear regulator?

Yes, HV9982K6-G can bypass its internal 40 V linear regulator by applying a 7.0–9.0 V external supply directly to VDD1–VDD3 pins while leaving VIN unconnected. All four VDD pins must be tied together externally and bypassed with ≥0.1 µF low-ESR capacitors to their respective grounds (GND, GND1–GND3). This mode reduces power loss and thermal load when a clean, regulated auxiliary rail is available-common in systems where HV9982K6-G shares power with other ICs in the same domain.

What is the purpose of the FLT1–FLT3 pins on the HV9982K6-G?

The FLT1–FLT3 pins on HV9982K6-G are active-low drivers for external N-channel disconnect FETs placed between the LED strings and output capacitors. During PWM dimming, they physically isolate LEDs from output capacitance to eliminate slow discharge delays-enabling >10,000:1 dimming ratios. During faults (short/open), FLT1–FLT3 force immediate disconnection to protect LEDs and limit stress on external components. Each FLT pin operates independently, allowing per-channel fault containment in HV9982K6-G implementations.