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Microchip Technology HV9912NG-G
- Part No.:
- HV9912NG-G
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HV9912NG-G.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:302
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Product details
Overview
HV9912NG-G from Microchip Technology is a switch-mode LED driver IC designed for constant-frequency or constant-off-time peak current-mode control of buck, boost, buck-boost, and SEPIC topologies. It delivers ±0.2A/–0.4A gate drive, closed-loop output current accuracy via internal 1.25V ±2% reference and transconductance amplifier, and hiccup-mode protection against open/short-circuit faults. It is used in RGB backlighting and battery-powered LED lamps requiring high dimming ratio and input voltage up to 90V.
For engineers reviewing the HV9912NG-G datasheet, HV9912NG-G pinout, HV9912NG-G application, or HV9912NG-G equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with functional differences, and supply-chain support for production deployment.
Technical Context
The HV9912NG-G implements peak current-mode control with programmable slope compensation (via SC and RT pins) and built-in 100 ns minimum leading-edge blanking on CS. Its internal 1 MHz transconductance opamp (gM = 550 µA/V, GBW = 1 MHz) enables stable closed-loop current regulation with COMP-based Type II/III compensation networks.
It integrates a 90V-input linear regulator (VDD = 7.75V typ., UVLO = 6.5–7.0V), TTL-compatible PWM dimming input (0–100% duty, ≤ few kHz), and fault-tolerant SYNC I/O for multi-IC synchronization. Hiccup timing is derived from the COMP node using a 5 µA current source/sink, with recovery dependent on external RC network values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9V–90V DC at VIN - powers internal regulator directly; eliminates need for auxiliary bias supply in high-voltage LED systems. |
| Gate Drive Strength | +0.2A source / –0.4A sink - supports fast switching of high-Qg MOSFETs in >20W LED drivers without external buffer. |
| Oscillator Frequency | 99–118 kHz (RT = 500 kΩ) or 510–650 kHz (RT = 96 kΩ) - selectable via single resistor; enables EMI optimization and inductor size trade-offs. |
| Reference Voltage | 1.25V ±2% (0°C to +85°C), buffered - sets precise LED current via IREF/FDBK loop and CLIM-based input current limit. |
| Overvoltage Protection | 5.0V rising trip (±0.25V), 0.5V hysteresis - protects boost outputs during LED string disconnection; auto-recovery avoids system latch-up. |
| Short-Circuit Detection | ≤250 ns propagation delay, 500 ns blanking during PWM dimming - prevents false triggering from LED parasitic capacitance turn-on spikes. |
| Operating Temperature | –40°C to +125°C junction - qualified for automotive cabin lighting and industrial outdoor LED fixtures. |
Pinout & Package
HV9912NG-G is housed in a 16-lead SOIC package with standard JEDEC MS-012AC footprint (5.3mm × 10.2mm, 1.27mm pitch). Thermal resistance θJA = 83°C/W enables >1.2W dissipation at TA = 25°C with minimal copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | High-voltage input to linear regulator | Accepts up to 90V DC; supplies VDD internally - no external bias needed for wide-input LED drivers. |
| VDD (2) | Internal power rail | 7.75V regulated output; must be bypassed with ≥0.1 µF low-ESR capacitor to sustain gate drive current transients. |
| GATE (3) | N-channel MOSFET gate driver output | +0.2A/–0.4A drive capability; rise/fall times <85/45 ns into 1 nF - minimizes switching losses in high-frequency designs. |
| GND (4) | Analog and power ground reference | Low-impedance return path for CS, COMP, and FDBK; must be star-connected to minimize noise coupling. |
| CS (5) | Current sense input with blanking | 100–330 ns programmable blanking; rejects FET turn-on spike - enables accurate sensing with low-value RCS (e.g., 250 mV full-scale). |
| SC (6) | Slope compensation current output | 0–100 µA programmable current; sets ramp slope for CCM stability at >50% duty cycle via RSLOPE/RSC divider. |
| RT (7) | Oscillator timing resistor connection | Resistor to GND sets switching frequency; linear relationship (TS ≈ RT × 18 pF) simplifies frequency tuning. |
| SYNC (8) | Multi-IC synchronization I/O | Open-drain compatible; locks oscillators to highest-frequency device - eliminates beat frequencies in multi-channel backlights. |
| CLIM (9) | Programmable input current limit threshold | Voltage divider from REF sets peak inductor current limit - protects against input undervoltage and overload conditions. |
| REF (10) | 2% accurate 1.25V reference output | Bypassed with 0.01–0.1 µF capacitor; sources up to 500 µA - drives IREF, CLIM, and external circuitry without drift. |
| FAULT (11) | Open-drain fault indicator | Pulled low during OVP or short-circuit; drives external disconnect FET - enables safe LED string isolation in boost configurations. |
| OVP (12) | Overvoltage sense input | 5.0V rising threshold; connects to output divider - triggers shutdown before capacitor overvoltage damages LEDs or FET. |
| PWMD (13) | TTL-compatible PWM dimming enable | 0–100% duty control; blanks FAULT/GATE/COMP paths synchronously - enables flicker-free dimming without external logic. |
| COMP (14) | Transconductance amplifier output & hiccup timer node | Connects to RC compensation network; voltage swing (1V–5V) controls hiccup restart timing - eliminates need for dedicated timer IC. |
| IREF (15) | Current reference input | Voltage divider from REF sets target LED current; direct mapping to FDBK feedback - enables precise current scaling across temperature. |
| FDBK (16) | Output current feedback input | Receives voltage from sense resistor; compared against IREF in transconductance amplifier - closes high-accuracy current loop. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible upgrade from HV9911 | Direct drop-in replacement for existing HV9911 designs with <90V input; requires only ROVP1, ROVP, and RT value updates - reduces redesign time. |
| Hiccup-mode short/open-circuit protection | Auto-retry behavior with COMP-based timing - recovers from momentary faults without host MCU intervention or power cycle. |
| Integrated 90V linear regulator | Eliminates external bias supply and associated BOM cost - simplifies layout and improves reliability in high-input-voltage LED systems. |
| 500 ns short-circuit comparator blanking during PWM dimming | Prevents false trips from LED string capacitive turn-on spikes - removes need for external RC filter at FDBK pin. |
| Constant frequency or constant off-time operation | Selectable via RT configuration - supports EMI-sensitive applications (fixed freq) or light-load efficiency optimization (off-time). |
| Synchronization capability across multiple ICs | Peer-to-peer SYNC bus allows phase alignment of multi-channel LED drivers - critical for uniform brightness in RGB backlight systems. |
Applications
| RGB LCD Backlighting | Portable LED Flashlights |
|---|---|
|
Use Scenario: Driving red, green, and blue LED strings in notebook or tablet displays with independent dimming per channel. IC Role / Device Role / Timing Role: Constant-current controller implementing synchronized PWM dimming across three HV9912NG-G units sharing a master SYNC signal. Use Value: Eliminates color shift during dimming by ensuring identical switching phase and current regulation accuracy (±2%) across all channels. |
Use Scenario: Powering high-brightness white LEDs from 2–3 alkaline or Li-ion cells in handheld illumination tools. IC Role / Device Role / Timing Role: Boost-mode LED driver with input voltage as low as 3V and hiccup protection against accidental shorted outputs. Use Value: Maintains regulated LED current down to 3V input while surviving dropped batteries or probe shorts - extends usable runtime and field reliability. |
| Industrial Panel Lighting | Automotive Interior Lighting |
|
Use Scenario: Driving long LED strings in factory HMIs and control panels exposed to wide ambient temperatures (–40°C to +85°C). IC Role / Device Role / Timing Role: Buck-boost topology controller with 125°C max junction rating and ±2% reference stability over full temp range. Use Value: Guarantees consistent lumen output and color point across operating life without recalibration - meets industrial uptime requirements. |
Use Scenario: Illuminating footwells, map lights, and ambient strips in vehicles where load dump and cold cranking are common. IC Role / Device Role / Timing Role: Buck converter with 90V absolute max VIN rating and hiccup-mode recovery from intermittent open-circuit faults. Use Value: Survives 12V system transients up to 87V (ISO 7637-2 Pulse 5a) and recovers automatically after connector vibration-induced opens. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HV9911NG-G | Same pinout and basic architecture, but lacks 500 ns PWM-blanked short-circuit detection and hysteretic OVP; UVLO hysteresis is smaller (300 mV vs. 500 mV). | Valid for legacy designs with external R-C filtering at FDBK and fixed OVP thresholds; not suitable for high-dimming-ratio or transient-heavy environments. | Select HV9911NG-G only when reusing existing PCBs with no layout changes and where hiccup robustness is non-critical. |
| LM3410XMM/NOPB | Single-ended buck-only controller; no boost/buck-boost/SEPIC support; 40V max VIN; integrated 0.5A gate driver; no SYNC or hiccup mode. | Limited to low-voltage (<40V) buck LED applications; lacks multi-topology flexibility and fault resilience of HV9912NG-G. | Choose LM3410XMM/NOPB for cost-sensitive, space-constrained buck-only designs below 40V input - not a functional substitute for HV9912NG-G's full feature set. |
Compared with HV9912NG-G, HV9911NG-G requires external filtering for reliable PWM dimming and offers reduced fault tolerance, while LM3410XMM/NOPB restricts topology choice and input voltage range - making HV9912NG-G the only option supporting synchronized multi-topology LED control with hiccup recovery in 90V systems.
Availability
HV9912NG-G is available at Aetrix Electronics and suitable for RGB backlighting, portable LED flashlights, and industrial panel lighting requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for HV9912NG-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 power management ICs, with emphasis on reliability, longevity, and automotive/industrial qualification.
HV9912NG-G belongs to Microchip's high-voltage LED controller product line, engineered for robust, multi-topology constant-current driving in demanding lighting applications where input voltage exceeds 40V and fault resilience is critical.
FAQ
What is the maximum input voltage rating for HV9912NG-G?
HV9912NG-G supports an absolute maximum input voltage of +100V at the VIN pin, with continuous operation specified from 9V to 90V DC. This 90V operating range enables direct connection to unregulated high-voltage rails - such as rectified AC or industrial 48V/72V systems - without external pre-regulation, reducing BOM count and improving system efficiency in LED driver designs.
Does HV9912NG-G support boost topology configurations?
Yes, HV9912NG-G explicitly supports boost, buck, buck-boost, and SEPIC topologies in both constant-frequency and constant-off-time modes. Its high-side current sensing capability (via CS pin with 100 ns blanking) and 0.4A sinking gate driver make it suitable for high-efficiency boost LED drivers - especially in battery-powered applications where output voltage exceeds input, such as 3S Li-ion to 12V LED strings.
How does the hiccup-mode protection work in HV9912NG-G?
HV9912NG-G initiates hiccup mode upon detecting open-circuit or short-circuit faults: GATE and FAULT are pulled low, then a 5 µA current source charges the external COMP network to 5V, followed by a 5 µA sink discharging it to 1V. Only after reaching 1V does the IC reconnect the transconductance amplifier and resume switching - providing automatic, self-limiting recovery without host intervention or reset signals.
Can HV9912NG-G synchronize with other LED controllers?
Yes, HV9912NG-G features a bidirectional SYNC pin that enables peer-to-peer or master-slave synchronization among multiple units. When SYNC pins are tied together, oscillators lock to the highest-frequency device - eliminating beat frequencies and enabling phase-aligned PWM dimming across RGB channels or multi-zone architectural lighting systems without external clock generators.
What is the purpose of the SC pin on HV9912NG-G?
The SC (Slope Compensation) pin on HV9912NG-G sources 0–100 µA of programmable current to implement slope compensation in continuous conduction mode (CCM) peak current-mode control. When used with external resistors RSLOPE and RSC, it injects a controlled ramp into the current sense path - ensuring stability for duty cycles above 50% in buck-boost and boost converters without requiring complex compensation networks.
HV9912NG-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 9V
- Voltage - Supply (Max):
- 100V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 106kHz, 580kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
HV9912NG-G FAQ
1.How can I place an order for HV9912NG-G through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9912NG-G 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 HV9912NG-G reliable?
The price and inventory of HV9912NG-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HV9912NG-G is usually 5 days.
3.What payment methods are accepted for HV9912NG-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9912NG-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9912NG-G?
HV9912NG-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9912NG-G 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 HV9912NG-G?
For technical support, including HV9912NG-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9912NG-G requirements.
6.How does Aetrix verify that HV9912NG-G is sourced from the original manufacturer or authorized distributors?
All HV9912NG-G 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 HV9912NG-G meets industry standards.
7.What is the process for return or replacement of HV9912NG-G?
All HV9912NG-G units undergo pre-shipment inspection (PSI). If there is an issue with HV9912NG-G, 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 HV9912NG-G part is unused and in its original packaging.
Return procedure for HV9912NG-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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