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Microchip Technology HV9912NG-G-M934
- Part No.:
- HV9912NG-G-M934
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HV9912NG-G-M934.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,341
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Product details
Overview
HV9912NG-G-M934 from Microchip Technology is a switch-mode LED driver IC supporting buck, boost, buck-boost, and SEPIC topologies with peak current mode control, closed-loop output current regulation (±2% reference accuracy), 90 V input-rated internal linear regulator, and hiccup-mode protection for short- and open-circuit faults - deployed in RGB backlighting and battery-powered LED lamps.
For engineers reviewing the HV9912NG-G-M934 datasheet, HV9912NG-G-M934 pinout, HV9912NG-G-M934 application, or HV9912NG-G-M934 equivalent, key selection considerations include programmable slope compensation for >50% duty-cycle stability, TTL-compatible PWM dimming up to several kHz, 0.2 A source / 0.4 A sink gate drive capability, and synchronization support across multiple controllers via the SYNC pin.
Technical Context
The HV9912NG-G-M934 implements a transconductance amplifier-based closed-loop current controller with 1 MHz gain-bandwidth product and 550 µA/V typical transconductance, enabling high-accuracy LED current regulation. Its peak current mode architecture includes programmable slope compensation (via SC and RT pins) and 100–330 ns leading-edge blanking on the CS pin to suppress switching noise.
It integrates a fault-tolerant SYNC I/O for multi-controller synchronization, a 5 µA hiccup timer sourced from the COMP pin, and dual comparators for independent short-circuit detection (with 500 ns blanking during PWM dimming) and overvoltage protection (5.0 V rising / 4.5 V falling threshold). The internal 7.75 V ±0.5 V linear regulator powers all circuitry directly from VIN (up to 90 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9 V to 90 V DC - powers IC directly via internal linear regulator; no auxiliary supply needed |
| Reference Voltage Accuracy | 1.25 V ±2% (0°C to +85°C) - enables precise LED current setting via IREF/FDBK feedback loop |
| Oscillator Frequency | 106 kHz typical (RT = 500 kΩ) or 580 kHz typical (RT = 96 kΩ) - selectable constant-frequency operation |
| GATE Drive Capability | +0.2 A source / –0.4 A sink - supports high-power external N-channel MOSFETs with fast rise/fall times (50/25 ns) |
| Overvoltage Protection | 5.0 V rising / 4.5 V falling threshold at OVP pin - provides hysteretic recovery after LED string disconnection |
| PWM Dimming Input | TTL-compatible (0.8 V low / 2.0 V high), 0–100% duty cycle, up to few kHz - enables flicker-free brightness control without analog current scaling |
| Short-Circuit Response | ≤1150 ns detection time (with PWMD-triggered blanking) - prevents false triggering during PWM turn-on transients |
| Operating Junction Temp | –40°C to +125°C - qualified for industrial and automotive-adjacent LED lighting environments |
Pinout & Package
HV9912NG-G-M934 is housed in a 16-lead SOIC package with standard JEDEC outline and creepage clearance suitable for 90 V input applications. Thermal resistance θJA is 83°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | High-voltage input to internal linear regulator | Accepts up to 90 V DC; supplies VDD and internal circuitry - eliminates need for external bias rail |
| VDD (2) | Internal power supply rail | Regulated ~7.75 V output; requires ≥0.1 µF low-ESR bypass capacitor to GND for gate driver stability |
| GATE (3) | Power MOSFET gate driver output | Drives external N-channel FET with +0.2 A / –0.4 A capability; rise/fall times <85/45 ns into 1 nF load |
| GND (4) | Analog and power ground reference | Low-impedance return path for CS, COMP, REF, and internal regulators - must be star-connected to minimize noise coupling |
| CS (5) | Current sense input with blanking | Monitors high-side FET source current; built-in 100–330 ns blanking prevents false turn-off at switch turn-on |
| SC (6) | Slope compensation programming node | Sources up to 100 µA; used with RSLOPE/RSC resistors to stabilize current mode control above 50% duty cycle |
| RT (7) | Oscillator timing resistor connection | Sets switching frequency in constant-frequency mode; 500 kΩ yields ~106 kHz, 96 kΩ yields ~580 kHz |
| SYNC (8) | Multi-controller synchronization I/O | Enables peer-to-peer locking of oscillators; highest-frequency device acts as master - fault-tolerant if line floats |
| CLIM (9) | Programmable input current limit input | Resistor divider from REF sets peak inductor current limit - protects against input undervoltage and overload |
| REF (10) | 2% accurate 1.25 V reference output | Bypassed with 0.01–0.1 µF capacitor; supplies bias for IREF, CLIM, and external circuitry (max 500 µA load) |
| FAULT (11) | Open-drain fault indicator output | Pulled low during OVP or short-circuit; drives external disconnect FET to isolate LED string under fault |
| OVP (12) | Overvoltage protection sense input | Triggers shutdown when voltage exceeds 5.0 V; recovers when falling below 4.5 V - enables auto-recovery after open-load |
| PWMD (13) | PWM dimming enable/control input | TTL-compatible; disables GATE and disconnects gm amplifier from COMP when low - enables seamless dimming control |
| COMP (14) | Transconductance amplifier compensation node | Connects RC network for loop stability; also serves as hiccup timer integrator - voltage swing controls restart timing |
| IREF (15) | LED current reference input | Voltage divider from REF sets target LED current; buffered input rejects noise and enables accurate current programming |
| FDBK (16) | Current feedback input | Receives voltage from sense resistor in LED return path; closed-loop comparison with IREF ensures stable current regulation |
Key Features
| Feature | Design Value |
|---|---|
| Peak current mode control with programmable slope compensation | Stabilizes converters operating above 50% duty cycle in CCM; prevents subharmonic oscillation using SC pin current |
| Hiccup-mode short- and open-circuit protection | Automatically retries after fault clearance using COMP pin as timing integrator - no manual reset required |
| Integrated 90 V linear regulator with UVLO | Eliminates auxiliary supply; 6.5 V rising / 6.0 V falling UVLO threshold ensures reliable startup and brownout immunity |
| 500 ns PWM-dimming–triggered short-circuit blanking | Prevents false fault detection during LED string turn-on transients - removes need for external RC filter at FDBK |
| Synchronization-capable SYNC pin | Enables deterministic phase alignment across multiple HV9912NG-G-M934 controllers - reduces EMI and improves thermal distribution |
| TTL-compatible PWM dimming with tri-state opamp output | Maintains COMP voltage during dimming off-time - preserves regulation state and enables rapid restart without settling delay |
Applications
| RGB LCD Backlighting | Portable LED Lamps |
|---|---|
|
Use Scenario: Driving red, green, and blue LED strings in notebook or monitor displays with independent current control per channel. IC Role / Device Role / Timing Role: Constant-current controller implementing peak current mode regulation with synchronized switching across three HV9912NG-G-M934 channels. Use Value: Enables precise color balance and uniform brightness via 2% reference accuracy and matched PWM dimming response across channels. |
Use Scenario: Powering high-brightness white LEDs from single-cell Li-ion (3.0–4.2 V) or 3×AA alkaline (3.0–4.5 V) batteries. IC Role / Device Role / Timing Role: Boost-mode LED driver with hiccup protection and low-quiescent shutdown (<1.5 mA) to maximize runtime. Use Value: Delivers regulated LED current across full battery discharge curve while preventing thermal runaway during accidental short circuits. |
| Industrial Panel Lighting | Architectural Accent Lighting |
|
Use Scenario: Controlling long LED strips in factory HMIs or control panels requiring robust operation in wide temperature ranges. IC Role / Device Role / Timing Role: Buck-boost topology controller supporting 12–48 V DC input with overvoltage recovery and open-wire detection. Use Value: Maintains consistent light output despite input voltage fluctuations and survives transient overvoltages from inductive loads. |
Use Scenario: Dimmable linear LED fixtures powered from 24 V DC distributed wiring in commercial buildings. IC Role / Device Role / Timing Role: Constant-frequency buck controller with external PWM dimming interface and synchronized multi-unit operation. Use Value: Achieves flicker-free dimming down to 0.1% with tight current matching across parallel fixtures using SYNC pin coordination. |
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-M934 | Predecessor with identical pinout but lacks 500 ns PWM-triggered short-circuit blanking and has non-hysteretic OVP (no auto-recovery) | Requires external RC filter at FDBK for reliable PWM dimming; unsuitable for open-load recovery-critical systems | Select HV9912NG-G-M934 when hiccup-mode protection, OVP hysteresis, or simplified layout (no FDBK filter) is required |
| LM3410XMM/NOPB | Single-stage buck-only controller with integrated 1.5 A FET; no high-voltage input capability or multi-topology support | Limited to low-input-voltage (≤6 V) portable applications; lacks programmable current limit and synchronization | Choose LM3410XMM/NOPB only for cost-sensitive, low-power, fixed-buck designs where 90 V input and topology flexibility are unnecessary |
Compared with HV9911NG-G-M934, HV9912NG-G-M934 adds critical reliability features for production LED systems - including automatic open-circuit recovery and PWM-dimming–robust fault detection - while maintaining full hardware compatibility. Against LM3410XMM/NOPB, it trades integration for versatility: HV9912NG-G-M934 supports higher input voltages, multiple topologies, and system-level coordination, making it suitable for scalable, field-deployable lighting platforms.
Availability
HV9912NG-G-M934 is available at Aetrix Electronics and suitable for RGB backlighting, portable LED lamps, and industrial panel lighting requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for HV9912NG-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 is a global semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with broad industrial and automotive qualification coverage.
HV9912NG-G-M934 belongs to Microchip's high-voltage LED controller product line, designed specifically for robust, high-accuracy constant-current driving of LED arrays in demanding lighting applications where input voltage range, fault resilience, and dimming fidelity are critical.
FAQ
What topology configurations does the HV9912NG-G-M934 support?
The HV9912NG-G-M934 supports buck, boost, buck-boost, and SEPIC topologies in either constant-frequency or constant-off-time operation modes. Its peak current mode control architecture with programmable slope compensation ensures stability across all four configurations, especially in continuous conduction mode at duty cycles exceeding 50%. Designers select topology based on input-output voltage relationship and efficiency targets - the HV9912NG-G-M934's flexible control scheme accommodates each without hardware change.
How does the HV9912NG-G-M934 implement hiccup-mode protection?
The HV9912NG-G-M934 implements hiccup-mode protection by disconnecting the GATE and FAULT outputs upon short- or open-circuit detection, then using the COMP pin as an integrator: a 5 µA current source pulls COMP from its steady-state voltage to 5 V, followed by a 5 µA sink pulling it down to 1 V. Only after reaching 1 V does the IC reconnect the transconductance amplifier and resume switching. This self-timed retry sequence prevents thermal damage while enabling automatic recovery - a core behavior of the HV9912NG-G-M934 under sustained fault conditions.
Can the HV9912NG-G-M934 operate from a 5 V input supply?
No, the HV9912NG-G-M934 cannot operate reliably from a 5 V input supply. Its internal linear regulator requires a minimum VIN of approximately 7.3 V to maintain VDD above the 6.5 V UVLO rising threshold, as confirmed by startup analysis in the datasheet. At 5 V, the regulator cannot sustain sufficient headroom, causing immediate shutdown. For low-input-voltage applications, designers should use dedicated low-VIN LED drivers like the MIC2289 or consider a pre-regulator stage before the HV9912NG-G-M934.
What is the purpose of the SC pin on the HV9912NG-G-M934?
The SC (Slope Compensation) pin on the HV9912NG-G-M934 sources up to 100 µA to program slope compensation for peak current mode control. When used with external resistors RSLOPE and RSC, it injects a ramp signal into the current sense comparator to prevent subharmonic oscillation in continuous conduction mode converters operating above 50% duty cycle. The HV9912NG-G-M934's SC pin implementation allows designers to tailor compensation precisely to their inductor's downslope - a critical function for stable, low-noise LED current regulation.
Is the HV9912NG-G-M934 pin-compatible with the HV9911NG-G-M934?
Yes, the HV9912NG-G-M934 is fully pin-compatible with the HV9911NG-G-M934, sharing identical pin count, pinout, and footprint in the 16-lead SOIC package. Migration requires only minor BOM changes: updating ROVP1, ROVP, and RT resistor values to match the HV9912NG-G-M934's enhanced OVP hysteresis and oscillator calibration. No PCB layout revision is needed, making the HV9912NG-G-M934 a drop-in upgrade for existing HV9911NG-G-M934 designs targeting improved fault resilience and PWM dimming robustness.
HV9912NG-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):
- 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-M934 FAQ
1.How can I place an order for HV9912NG-G-M934 through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9912NG-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 HV9912NG-G-M934 reliable?
The price and inventory of HV9912NG-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 HV9912NG-G-M934 is usually 5 days.
3.What payment methods are accepted for HV9912NG-G-M934?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9912NG-G-M934 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9912NG-G-M934?
HV9912NG-G-M934 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9912NG-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 HV9912NG-G-M934?
For technical support, including HV9912NG-G-M934 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9912NG-G-M934 requirements.
6.How does Aetrix verify that HV9912NG-G-M934 is sourced from the original manufacturer or authorized distributors?
All HV9912NG-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 HV9912NG-G-M934 meets industry standards.
7.What is the process for return or replacement of HV9912NG-G-M934?
All HV9912NG-G-M934 units undergo pre-shipment inspection (PSI). If there is an issue with HV9912NG-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 HV9912NG-G-M934 part is unused and in its original packaging.
Return procedure for HV9912NG-G-M934:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HV9912NG-G-M934 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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