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Microchip Technology HV9963NG-G-M934
- Part No.:
- HV9963NG-G-M934
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HV9963NG-G-M934.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,276
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Product details
Overview
HV9963NG-G-M934 from Microchip Technology is a current-mode LED driver IC designed to control buck, boost, buck-boost, or SEPIC topologies in constant-frequency operation. It delivers ±2% internal voltage reference accuracy, 10V gate drivers for standard-level MOSFETs, and supports >5000:1 PWM dimming ratio. Used in RGB/white LED backlighting systems requiring precise current regulation and fault-protected dimming.
For engineers reviewing the HV9963NG-G-M934 datasheet, HV9963NG-G-M934 pinout, HV9963NG-G-M934 application, or HV9963NG-G-M934 equivalent, key selection criteria include its programmable soft start, hiccup-mode protection for LED open/short faults, internal 40V input regulator, and TTL-compatible PWM dimming input with no minimum on-time limitation.
Technical Context
The HV9963NG-G-M934 implements peak current-mode control with programmable slope compensation and integrates a transconductance op-amp (2000 µA/V gm, 1 MHz GBW) for closed-loop LED current regulation. Its dual-regulator architecture supplies 10V (PVDD) to gate drivers and 5.0V (AVDD) to logic and reference circuitry, both with UVLO thresholds (7.2V/4.7V) and hysteresis.
It features synchronized oscillator operation via the SYNC pin, enabling multi-IC timing alignment, and uses a dedicated FLT output to drive an external disconnect FET-critical for achieving high PWM dimming ratios and protecting against LED string short-circuit faults in boost/SEPIC configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology Support | Buck, boost, buck-boost, SEPIC - enables flexible DC/DC LED driver design across input/output voltage relationships. |
| PWM Dimming Ratio | >5000:1 - achieved via enhanced logic that maintains inductor current regulation even at sub-cycle dimming pulses. |
| Internal Reference | ±2% accuracy at AVDD - provides stable 5.0V reference for IREF-based LED current setting without external precision references. |
| Gate Drive Voltage | 10V (typ.) at PVDD - drives standard-level N-channel MOSFETs without level-shifting, reducing BOM count and layout complexity. |
| Oscillator Frequency | 100 kHz (RT = 237 kΩ) or 520 kHz (RT = 44.2 kΩ) - selectable via external resistor to optimize efficiency vs. size trade-offs in magnetics. |
| Fault Protection | Hiccup mode for LED open/short - automatically retries after programmable delay (via HCP capacitor), preventing thermal runaway during sustained faults. |
| Operating Temp Range | –40°C to +125°C ambient - qualified for industrial and automotive interior lighting applications with wide thermal margins. |
Pinout & Package
Package: 16-lead SOIC (Small Outline Integrated Circuit), surface-mount, 1.27 mm pitch, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply | Accepts 8–40V DC; powers internal 40V linear regulator - eliminates need for external pre-regulator in wide-input designs. |
| PVDD | 10V gate driver supply | Regulated 10V output for GATE and FLT drivers; requires ≥1 µF low-ESR bypass capacitor for stable switching. |
| GATE | Main switch driver output | 10V push-pull gate driver capable of 0.2 A source / 0.4 A sink - directly drives power MOSFET gates with fast rise/fall times (<60 ns). |
| CS | Current sense input | Senses FET source current with 100–300 ns blanking; includes internal discharge FET and slope compensation current source (2 µA typical). |
| FLT | Fault disconnect control | Drives external NMOS disconnect FET to isolate LED load during PWM off-time or fault - essential for high-ratio dimming and short-circuit protection. |
| IREF | LED current reference input | Accepts 0–3.5V reference (e.g., from AVDD divider); sets full-scale LED current; disables short-circuit comparator above 1.31V. |
| FDBK | Current feedback input | Receives voltage from LED string sense resistor; compared against IREF-derived reference by transconductance amplifier for closed-loop regulation. |
| COMP | Compensation node | Output of internal transconductance op-amp; connects to RC network for loop stability - tristate during PWM off-time to hold regulation state. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced PWM dimming logic | Maintains inductor current regulation during sub-cycle PWM pulses - ensures LED current remains in regulation even at <100 ns on-times, enabling >5000:1 dimming without droop. |
| Programmable soft start | SS pin controls COMP voltage ramp rate via external capacitor - prevents LED current overshoot at startup by limiting slew rate of control loop integrator. |
| Dual independent regulators | Separate 10V (PVDD) and 5.0V (AVDD) outputs - isolates high-current gate drive noise from sensitive analog control circuitry, improving PSRR and stability. |
| SYNC-capable oscillator | Multi-device synchronization via open-drain SYNC pin - locks oscillators to highest-frequency unit, eliminating beat frequencies in multi-channel LED systems. |
| Hiccup-mode fault recovery | HCP pin programs restart interval using external capacitor - provides safe, self-resetting protection against persistent LED open/short conditions without manual intervention. |
Applications
| RGB LED Backlighting | Battery-Powered LED Lamps |
|---|---|
Use Scenario: Driving individual red, green, and blue LED strings in LCD TV or monitor backlight units with independent current control per channel. IC Role / Device Role / Timing Role: Constant-current controller implementing peak current-mode regulation with synchronized switching across all three channels via shared SYNC signal. Use Value: Enables precise color point stability and uniform brightness across wide dimming ranges (>5000:1) without color shift or current mismatch between channels. |
Use Scenario: Portable LED flashlights or task lights powered by 2–4 Li-ion cells (8–16.8V), requiring efficient step-up conversion and robust overvoltage protection. IC Role / Device Role / Timing Role: Boost converter controller with OVP monitoring at the OVP pin and hiccup-mode restart on LED open-circuit detection. Use Value: Prevents dangerous overvoltage on LEDs during battery voltage surge or open-load conditions while maintaining automatic recovery without firmware intervention. |
| Automotive Interior Lighting | Industrial Panel Backlighting |
Use Scenario: Footwell, map light, or ambient lighting modules in vehicles where EMI compliance, thermal resilience, and fault tolerance are critical. IC Role / Device Role / Timing Role: Buck-boost LED driver operating across cold-crank (6V) to load-dump (40V) input transients, using VIN-supplied 40V regulator for rail independence. Use Value: Eliminates need for external pre-regulator; operates continuously across full automotive voltage range while meeting AEC-Q100 stress requirements (–40°C to +125°C). |
Use Scenario: High-reliability operator interface panels in factory automation equipment requiring long-life, flicker-free illumination under variable line voltage. IC Role / Device Role / Timing Role: SEPIC topology controller delivering regulated LED current despite input fluctuations from unregulated 24V DC supplies with ripple up to ±10%. Use Value: Maintains constant luminance regardless of input variation; FLT-driven disconnect FET ensures zero current leakage during standby, extending panel lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409HVMM/NOPB | Adjustable 1.25V reference; no integrated 5V/10V regulators; requires external bias supplies. | Lacks built-in soft start and hiccup timer; needs external fault management circuitry for open/short protection. | Preferred when board space allows discrete regulators and system-level fault handling is already implemented. |
| MAX16832ATP+ | Fixed 2.5V reference; 7V gate drive; no SYNC capability; lower max dimming ratio (~1000:1). | Designed for lower-power applications; lacks FLT pin for external disconnect FET control. | Selected for cost-sensitive, low-current (<350 mA) LED arrays where ultra-high dimming ratio is not required. |
Compared with LM3409HVMM/NOPB and MAX16832ATP+, the HV9963NG-G-M934 offers integrated dual regulators, dedicated FLT control for high-ratio PWM dimming, and programmable hiccup recovery - reducing external component count and simplifying fault-tolerant design for mid-to-high power LED systems.
Availability
HV9963NG-G-M934 is available at Aetrix Electronics and suitable for RGB LED backlighting, battery-powered LED lamps, and automotive interior lighting requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for HV9963NG-G-M934 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 power management ICs, with broad industrial and automotive qualification coverage.
The HV9963NG-G-M934 belongs to Microchip's high-voltage LED controller product line, engineered specifically for accurate, fault-resilient current regulation in DC/DC LED drivers across buck, boost, and SEPIC topologies.
FAQ
What is the maximum input voltage rating for HV9963NG-G-M934?
The HV9963NG-G-M934 has an absolute maximum VIN-to-GND rating of +45V, with recommended continuous operation from 8V to 40V DC. This wide input range allows direct connection to 24V industrial rails or 36V battery systems without external pre-regulation, leveraging its internal 40V linear regulator for internal bias generation.
How does HV9963NG-G-M934 achieve >5000:1 PWM dimming ratio?
The HV9963NG-G-M934 achieves >5000:1 PWM dimming ratio through enhanced logic that keeps the main switching FET active during PWM off-time until inductor current reaches its full-brightness steady-state value. This preserves regulation integrity and prevents LED current droop, unlike conventional controllers that fully disable switching - a capability confirmed in DS20005594A, Section 3.11.
Can HV9963NG-G-M934 operate without an external current sense resistor?
No. The HV9963NG-G-M934 requires an external current sense resistor (RCS) connected to the CS pin to monitor switch current for peak current-mode control. The CS pin includes built-in blanking and slope compensation current sourcing, but no internal sensing element - RCS value determines peak inductor current limit and must be selected per application topology and saturation margin.
What is the function of the FLT pin on HV9963NG-G-M934?
The FLT pin on HV9963NG-G-M934 drives an external NMOS disconnect FET to isolate the LED load during PWM dimming off-time or fault conditions. In boost/SEPIC topologies, this prevents reverse current flow and enables true zero-current dimming; during faults, it interrupts the path to protect the LED string and power stage - a core feature documented in Sections 2.1 and 3.7 of the datasheet.
Is HV9963NG-G-M934 pin-compatible with earlier HV9963 variants?
Yes. HV9963NG-G-M934 is a tape-and-reel packaged variant of the HV9963 family and shares identical pinout, electrical specifications, and functional behavior with other HV9963 versions (e.g., HV9963NG-G, HV9963DG-G). The "M934" suffix denotes packaging and reel configuration only - no functional or pinout differences exist between these part numbers.
HV9963NG-G-M934 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- SEPIC, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 8V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 100kHz, 520kHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
HV9963NG-G-M934 FAQ
1.How can I place an order for HV9963NG-G-M934 through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9963NG-G-M934 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HV9963NG-G-M934 reliable?
The price and inventory of HV9963NG-G-M934 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HV9963NG-G-M934 is usually 5 days.
3.What payment methods are accepted for HV9963NG-G-M934?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9963NG-G-M934 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9963NG-G-M934?
HV9963NG-G-M934 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9963NG-G-M934 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HV9963NG-G-M934?
For technical support, including HV9963NG-G-M934 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9963NG-G-M934 requirements.
6.How does Aetrix verify that HV9963NG-G-M934 is sourced from the original manufacturer or authorized distributors?
All HV9963NG-G-M934 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HV9963NG-G-M934 meets industry standards.
7.What is the process for return or replacement of HV9963NG-G-M934?
All HV9963NG-G-M934 units undergo pre-shipment inspection (PSI). If there is an issue with HV9963NG-G-M934, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HV9963NG-G-M934 part is unused and in its original packaging.
Return procedure for HV9963NG-G-M934:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HV9963NG-G-M934 Tags
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