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Microchip Technology HV9911NG-G-M934
- Part No.:
- HV9911NG-G-M934
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HV9911NG-G-M934.pdf
- Description:
- IC LED DRIVER CTRLR PWM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
HV9911NG-G-M934 from Microchip Technology is a switch-mode LED driver IC supporting buck, boost, buck-boost, and SEPIC topologies with peak current control, closed-loop output current regulation, and 2% reference accuracy. It integrates a +0.2A/–0.4A gate driver, internal 250V linear regulator, programmable MOSFET current limit, and OVP/short-circuit protection - used in RGB backlight drivers and battery-powered LED lamps achieving >90% efficiency.
For engineers reviewing the HV9911NG-G-M934 datasheet, HV9911NG-G-M934 pinout, HV9911NG-G-M934 application, or HV9911NG-G-M934 equivalent, key selection considerations include input voltage range (9–250V), constant-frequency or constant-off-time operation, TTL-compatible PWM dimming (0–100% duty, kHz-range), slope compensation programmability, and synchronization capability across multiple controllers.
Technical Context
The HV9911NG-G-M934 implements a peak current-mode controller with programmable slope compensation for stability at >50% duty cycle, using an internal transconductance amplifier (GBW = 1 MHz, gm = 435 µA/V) to regulate LED current via FDBK/IREF feedback. Its oscillator supports dual modes: RT-to-GND sets constant frequency (88–392 kHz), while RT-to-GATE configures constant off-time.
Protection logic includes latched output short-circuit detection (triggered at 200% steady-state current), overvoltage shutdown (1.25V threshold at OVP pin), and fault reporting via open-drain FAULT pin. Synchronization uses a fault-tolerant peer-to-peer I/O sync pin that locks oscillators to the highest-frequency device in a multi-IC system.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9–250 V DC - powers internal 7.75 V regulator directly from high-voltage rail, eliminating auxiliary supply |
| Oscillator Frequency | 88–392 kHz - selectable via RT resistor; supports synchronized multi-channel LED driving |
| Reference Voltage | 1.25 V ±2% - enables precise LED current setting and OVP threshold generation |
| Gate Drive Capability | +0.2 A source / –0.4 A sink - drives high-power external N-MOSFETs with fast rise/fall times (50/25 ns) |
| Current Sense Accuracy | 100 ns leading-edge blanking + <±10 mV comparator offset - rejects turn-on spikes and ensures stable current regulation |
| Operating Temperature | –40°C to +85°C ambient - qualified for industrial and automotive interior lighting environments |
| Fault Response Time | <250 ns short-circuit propagation - enables rapid shutdown before thermal damage to LEDs or FET |
Pinout & Package
HV9911NG-G-M934 is housed in a 16-lead SOIC package with exposed pad (RoHS-compliant, JEDEC MS-012AC). Pin layout supports high-voltage isolation between VIN and low-side signal pins (GND, CS, COMP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input | Accepts 9–250 V DC; feeds internal 250 V linear regulator - no external bias supply needed |
| VDD | Internal power rail | 7.75 V regulated output; powers all internal circuits and can supply external REF-bypass caps |
| GATE | Power FET driver | Drives external N-channel MOSFET gate with 0.2 A source / 0.4 A sink capability |
| GND | Signal and power return | Common reference for CS, COMP, IREF, FDBK; must connect to low-impedance input return path |
| CS | Current sense input | Monitors MOSFET drain current via external sense resistor; includes 100 ns blanking to suppress turn-on spikes |
| SC | Slope compensation | Programmable ramp injection for peak-current-mode stability above 50% duty cycle |
| RT | Oscillator timing | Selects operating mode: RT-to-GND = constant frequency; RT-to-GATE = constant off-time |
| SYNC | Multi-IC synchronization | Open-drain I/O pin enabling master/slave or peer-to-peer clock locking without external circuitry |
| CLIM | Programmable current limit | Sets MOSFET peak current threshold using resistor divider from REF pin |
| REF | Precision voltage reference | 1.25 V ±2% buffered output; bypass with 10 nF–0.22 µF capacitor for stability |
| FAULT | Open-drain fault indicator | Asserts low during OVP or short-circuit; used to drive external disconnect FET in boost configurations |
| OVP | Overvoltage sense input | Compares divided output voltage to internal 1.25 V reference; shuts down GATE when exceeded |
| PWMD | PWM dimming enable | TTL-compatible input (0.8 V low / 2 V high); controls transconductance amplifier output and FAULT state |
| COMP | Loop compensation node | Connects external RC network to stabilize closed-loop current regulation |
| IREF | Current reference input | Sets target LED current via resistor divider from REF; transconductance amplifier compares FDBK to this value |
| FDBK | Current feedback input | Receives voltage from LED-string sense resistor; closed-loop error signal for transconductance amplifier |
Key Features
| Feature | Design Value |
|---|---|
| Single-switch topology support | Enables buck, boost, buck-boost, and SEPIC LED drivers with one IC - reduces BOM count and layout complexity |
| Integrated 250 V linear regulator | Eliminates need for auxiliary bias supply; accepts direct connection to rectified AC or high-voltage DC rails |
| Closed-loop current regulation | Uses internal 1 MHz transconductance amplifier with 15:1 buffered feedback - achieves high current accuracy (<±3%) across line/load/temp |
| Programmable MOSFET current limit | Prevents overcurrent during input undervoltage or output overload by dynamically adjusting CLIM threshold |
| Latched fault protection | Provides robust OVP and short-circuit response with FAULT pin assertion and GATE disable - requires power recycle to reset |
| Synchronization capability | Allows up to four HV9911NG-G-M934 ICs to lock phase without external clock generator - eliminates beat frequencies in multi-channel RGB systems |
Applications
| RGB LCD Backlighting | Battery-Powered LED Lamps |
|---|---|
Use Scenario: Driving independent red, green, and blue LED strings in LCD displays requiring precise color balance and flicker-free dimming. IC Role / Device Role / Timing Role: Constant-current controller per channel with synchronized switching to eliminate beat interference between channels. Use Value: Enables >90% efficiency and 10,000:1 PWM dimming ratio while maintaining color point stability across brightness levels. | Use Scenario: Portable LED flashlights or task lights powered by 2–4 alkaline or Li-ion cells with wide input voltage variation. IC Role / Device Role / Timing Role: Buck-boost LED driver maintaining constant output current as battery voltage drops from 6 V to 2.5 V. Use Value: Delivers stable light output over full battery discharge curve without requiring voltage pre-regulation or multiple topologies. |
| Industrial Status Lighting | Architectural LED Strips |
Use Scenario: High-reliability status indicators in factory HMIs, PLC panels, or safety equipment where long service life and thermal resilience are critical. IC Role / Device Role / Timing Role: Constant-current buck driver with latched fault protection and –40°C to +85°C operation. Use Value: Ensures fail-safe LED illumination under brownout, short-circuit, or overvoltage conditions without firmware intervention. | Use Scenario: Low-voltage (12–48 V) continuous LED strips for signage or accent lighting with minimal EMI and uniform brightness. IC Role / Device Role / Timing Role: Boost or SEPIC driver supporting long strings of series-connected LEDs from fixed DC bus. Use Value: Achieves >90% efficiency and low conducted emissions due to constant-frequency operation and integrated slope compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ3367-AEC1 from Monolithic Power Systems | Automotive-grade (AEC-Q100), integrated 1.5 A gate driver, supports up to 6 strings; lacks high-voltage VIN input | Targeted at automotive cabin lighting with CAN/LIN interface support; not suitable for direct 250 V input | Choose MPQ3367-AEC1 only for automotive designs requiring qualification and multi-string integration - not a drop-in replacement |
| LM3409HV from Texas Instruments | Supports 75 V max VIN, integrated 1.5 A gate driver, analog/digital dimming; no internal reference or sync capability | Optimized for mid-voltage industrial LED drivers (12–48 V input); requires external reference and sync circuitry | Choose LM3409HV for cost-sensitive, lower-input-voltage applications where sync and precision reference are not required |
Compared with MPQ3367-AEC1 and LM3409HV, HV9911NG-G-M934 uniquely combines 250 V input tolerance, internal 1.25 V reference, and peer-to-peer sync in a single SOIC package - making it optimal for high-voltage, multi-channel, and space-constrained LED driver designs.
Availability
HV9911NG-G-M934 is available at Aetrix Electronics and suitable for RGB backlighting, battery-powered LED lamps, and industrial status lighting requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for HV9911NG-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and design-in support for industrial and automotive markets.
HV9911NG-G-M934 belongs to Microchip's high-voltage LED controller product line, designed specifically for efficient, flexible, and robust constant-current driving of LED loads in applications ranging from consumer displays to industrial lighting.
FAQ
What is the maximum input voltage rating for HV9911NG-G-M934?
HV9911NG-G-M934 supports an absolute maximum input voltage of +250 V at the VIN pin. Its internal linear regulator operates continuously from 9 V to 250 V DC, delivering a regulated 7.75 V supply to internal circuitry. Operation below 9 V is possible if VDD remains above the 6.9 V UVLO threshold, but regulation is lost - design margin must be verified per application.
Does HV9911NG-G-M934 support both constant-frequency and constant-off-time operation?
Yes, HV9911NG-G-M934 supports both modes. Connecting the RT resistor to GND configures constant-frequency operation (88–392 kHz); connecting RT to the GATE pin configures constant-off-time mode. The mode selection is hardware-defined and does not require configuration registers or external logic - enabling flexible topology adaptation without firmware changes.
How does the FAULT pin function in HV9911NG-G-M934?
The FAULT pin in HV9911NG-G-M934 is an open-drain output that pulls low during latched fault conditions - specifically output overvoltage or output short-circuit events. It remains asserted until input power is cycled. In boost configurations, FAULT is commonly used to drive an external disconnect FET placed between the LED string and the output capacitor, ensuring complete load isolation during faults.
Can HV9911NG-G-M934 synchronize multiple LED drivers without an external clock generator?
Yes, HV9911NG-G-M934 includes a dedicated SYNC pin that enables peer-to-peer synchronization among up to four devices without external clock circuitry. When SYNC pins are tied together, oscillators automatically lock to the highest-frequency unit. This eliminates beat frequencies in multi-channel RGB systems and simplifies timing design in distributed LED lighting architectures.
What is the purpose of the SC (slope compensation) pin in HV9911NG-G-M934?
The SC pin in HV9911NG-G-M934 injects programmable ramp compensation into the current-sense path to stabilize peak-current-mode control when duty cycle exceeds 50%. A resistor from SC to GND sets the compensation slope; in constant-off-time mode, slope compensation is unnecessary and the SC pin may be left unconnected. This feature prevents subharmonic oscillation in boost and SEPIC topologies.
HV9911NG-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):
- 250V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 100kHz, 350kHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
HV9911NG-G-M934 FAQ
1.How can I place an order for HV9911NG-G-M934 through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9911NG-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 HV9911NG-G-M934 reliable?
The price and inventory of HV9911NG-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 HV9911NG-G-M934 is usually 5 days.
3.What payment methods are accepted for HV9911NG-G-M934?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9911NG-G-M934 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9911NG-G-M934?
HV9911NG-G-M934 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9911NG-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 HV9911NG-G-M934?
For technical support, including HV9911NG-G-M934 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9911NG-G-M934 requirements.
6.How does Aetrix verify that HV9911NG-G-M934 is sourced from the original manufacturer or authorized distributors?
All HV9911NG-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 HV9911NG-G-M934 meets industry standards.
7.What is the process for return or replacement of HV9911NG-G-M934?
All HV9911NG-G-M934 units undergo pre-shipment inspection (PSI). If there is an issue with HV9911NG-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 HV9911NG-G-M934 part is unused and in its original packaging.
Return procedure for HV9911NG-G-M934:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HV9911NG-G-M934 Tags
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