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Microchip Technology HV9910CSG-G
- Part No.:
- HV9910CSG-G
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
HV9910CSG-G.pdf
- Description:
- IC LED DRIVER CTRLR PWM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,294
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Product details
Overview
HV9910CSG-G from Microchip Technology is an open-loop, peak-current-mode LED driver IC optimized for buck topology constant-current LED applications. It integrates a 15–450V internal linear regulator, supports both constant-frequency and constant-off-time operation, delivers 20–120 kHz oscillator frequency (via RT resistor), features TTL-compatible PWM dimming (0–100% duty, kHz-range), and provides 250 mV current-sense threshold with blanking. It is used in flat-panel display backlights and signage LED drivers requiring fast dimming response and minimal external components.
For engineers reviewing the HV9910CSG-G datasheet, HV9910CSG-G pinout, HV9910CSG-G application, or HV9910CSG-G equivalent, key selection considerations include its 8-lead SOIC package with exposed thermal pad, built-in over-temperature shutdown (140°C typ.), gate drive capability (±165 mA), and dual dimming support (linear 0–250 mV LD input + PWM on PWMD).
Technical Context
The HV9910CSG-G implements open-loop peak-current control using two comparators-one referenced to an internal 250 mV threshold and the other to the externally applied LD voltage-whose outputs feed an OR gate that resets an SR flip-flop to terminate each switching cycle. Its oscillator operates via a single RT resistor, configurable for constant-frequency (RT-to-GND) or constant-off-time (RT-to-GATE) modes, enabling inherent input-voltage rejection in the latter.
It incorporates a 15–450 V linear regulator delivering 7.5 V ±250 mV at VDD with line regulation ≤1.0 V and load regulation ≤0.1 V, eliminating need for auxiliary bias supplies. Thermal shutdown activates at 140°C (typ.) with 20°C hysteresis, reducing VIN current to <350 µA in fault condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Input Voltage | 15–450 VDC at VIN: powers IC directly without external bias supply; limited by thermal dissipation in package. |
| VDD Regulation | 7.25–7.75 V: stable internal rail for logic and gate driver; supports external resistor dividers for LD scaling. |
| Oscillator Frequency | 20–30 kHz (ROSC = 1 MΩ) or 80–120 kHz (ROSC = 249 kΩ): sets switching period or off-time depending on RT connection. |
| Current Sense Threshold | 225–275 mV at CS: defines peak inductor current limit; overridden by LD voltage if <250 mV. |
| GATE Drive Strength | ±165 mA source/sink: drives N-channel MOSFET gates with 30–50 ns rise/fall times (500 pF load). |
| Thermal Shutdown | 128–150°C activation with 10–30°C hysteresis: auto-recoverable protection preventing junction overheating. |
| PWM Dimming Input | TTL-compatible (VEN(lo) ≤1.0 V, VEN(hi) ≥2.4 V); enables instantaneous LED current on/off control up to few kHz. |
Pinout & Package
Package: 8-lead SOIC with exposed thermal pad (SG variant), RoHS-compliant (G suffix). Thermal resistance θJA = 84°C/W with heat slug, enabling higher power operation than standard 8-lead SOIC (101°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input | Connects to DC input (15–450 V); powers internal linear regulator; maximum absolute rating 470 V. |
| CS | Current sense input | Monitors voltage across external sense resistor; triggers GATE turn-off when exceeding LD or 250 mV threshold. |
| GND | Ground reference | Common return for all internal circuitry and external power stage; must connect to power ground plane. |
| GATE | Power FET driver output | Drives gate of external N-MOSFET; ±165 mA drive strength; 30–50 ns edge times into 500 pF. |
| RT | Oscillator timing | Resistor connection determines mode: to GND → constant frequency; to GATE → constant off-time. |
| LD | Linear dimming input | 0–250 mV analog input setting current-sense threshold; overrides internal 250 mV reference. |
| VDD | Internal supply rail | 7.5 V regulated output; bypass with ≥0.1 µF low-ESR capacitor; can be externally supplied ≤12 V. |
| PWMD | PWM dimming control | TTL-level input: high → normal operation; low or open → GATE disabled; no effect on internal bias. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 15–450 V linear regulator | Eliminates need for auxiliary low-voltage supply; supports direct wide-input operation in AC/DC LED drivers. |
| Open-loop peak-current control | Enables accurate LED current regulation without loop compensation or high-side sensing; reduces BOM count. |
| Dual dimming interface | Independent linear (0–250 mV LD) and PWM (TTL PWMD) inputs allow flexible brightness control architectures. |
| Configurable oscillator mode | Single RT resistor selects constant-frequency (stable EMI) or constant-off-time (input-voltage rejection, >50% duty capable). |
| Built-in thermal shutdown | Auto-recoverable 140°C (typ.) protection with 20°C hysteresis prevents thermal runaway in enclosed fixtures. |
Applications
| Flat-Panel Display Backlight | RGB LED Signage |
|---|---|
Use Scenario: Driving parallel strings of white or RGB LEDs in LCD TV or monitor backlight units with local dimming zones. IC Role / Device Role / Timing Role: Constant-current buck controller regulating per-string LED current; uses constant-off-time mode for input ripple rejection across wide AC/DC adapter ranges. Use Value: Fast PWM dimming response (<1 µs LED current rise/fall) enables precise dynamic contrast control without visible flicker. |
Use Scenario: Outdoor advertising displays using high-brightness RGB LED modules powered from 24–48 VDC supplies. IC Role / Device Role / Timing Role: Single-switch buck driver per color channel; leverages internal 450 V regulator to tolerate supply transients and brownouts. Use Value: Linear dimming via LD pin allows smooth color mixing without PWM artifacts; thermal shutdown protects against ambient temperature extremes. |
| LED Architectural Lighting | AC/DC LED Lamp Driver |
Use Scenario: Constant-current driver for long LED strips in commercial interior lighting, requiring robust thermal management. IC Role / Device Role / Timing Role: Buck controller operating in constant-frequency mode (ROSC = 1 MΩ) for predictable EMI filtering; uses exposed thermal pad (SG package) for PCB heat sinking. Use Value: 84°C/W θJA enables higher continuous output current vs. standard SOIC; over-temperature protection ensures reliability in enclosed housings. |
Use Scenario: Non-isolated AC/DC LED bulb driver converting rectified line voltage (e.g., 100–305 VDC) to regulated LED current. IC Role / Device Role / Timing Role: High-voltage input controller using VIN directly from bridge rectifier output; internal regulator eliminates need for separate bias winding. Use Value: 450 V max input rating and 15 V minimum enable operation across universal mains (90–265 VAC); minimal external parts reduce cost and size. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HV9910B | No over-temperature protection; identical pinout and electrical specs except thermal shutdown missing. | Not suitable for thermally constrained enclosures or high-ambient environments where junction temperature may exceed 125°C. | Select HV9910CSG-G when thermal safety compliance (e.g., UL 1310 Class 2) or field reliability in hot locations is required. |
| AL8862SP-13 | Constant-current buck controller with integrated 600 V MOSFET; requires no external switch; lower max input (600 V but rated for 400 V continuous). | Reduces component count further but lacks HV9910CSG-G's flexibility in FET selection, dimming options, and wide-input regulator. | Choose AL8862SP-13 for ultra-low-BOM cost in <10 W lamps; retain HV9910CSG-G for >10 W, multi-string, or thermally demanding designs. |
Compared with HV9910B, HV9910CSG-G adds critical thermal safety without layout change; versus AL8862SP-13, it trades integration for design flexibility, higher power scalability, and dual-dimming precision - making it optimal for mid-to-high-power LED systems needing robustness and configurability.
Availability
HV9910CSG-G is available at Aetrix Electronics and suitable for flat-panel display backlights, architectural LED lighting, and AC/DC LED lamp drivers requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for HV9910CSG-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified design and wafer fabrication facilities.
HV9910CSG-G belongs to Microchip's universal high-brightness LED driver family, designed specifically for cost-sensitive, high-efficiency buck LED drivers in consumer, commercial, and industrial lighting applications.
FAQ
What is the maximum input voltage rating for HV9910CSG-G?
The HV9910CSG-G has an absolute maximum VIN-to-GND rating of +470 V, but its functional DC input range is specified as 15–450 V. Operation at 450 V is supported only when thermal limits permit - for example, with the SG package's 84°C/W θJA and proper PCB copper area. At higher voltages, power dissipation in the internal regulator must remain within safe junction temperature limits (≤125°C continuous, 150°C peak).
How does HV9910CSG-G implement thermal protection?
HV9910CSG-G includes auto-recoverable over-temperature protection that activates at 128–150°C junction temperature (140°C typical), reducing VIN current to <350 µA and disabling the GATE driver. Hysteresis of 10–30°C ensures stable restart once temperature falls below the recovery threshold. This feature is absent in the earlier HV9910B, making HV9910CSG-G suitable for thermally demanding LED fixtures.
Can HV9910CSG-G operate without an external MOSFET?
No. HV9910CSG-G is a controller IC only and requires an external N-channel power MOSFET connected to its GATE output. It does not integrate a power switch. The GATE driver delivers ±165 mA with 30–50 ns edges into 500 pF, supporting FETs with gate charge <25 nC at ≤100 kHz or <15 nC above 100 kHz - ensuring efficient switching in buck LED topologies.
What dimming methods does HV9910CSG-G support?
HV9910CSG-G supports two independent dimming methods: linear dimming via the LD pin (0–250 mV input adjusts current-sense threshold) and PWM dimming via the PWMD pin (TTL-compatible, 0–100% duty cycle, up to few kHz). Both can be used simultaneously - e.g., coarse adjustment via LD and fine modulation via PWMD - enabling precise brightness and color control in RGB systems.
What is the purpose of the exposed thermal pad in the HV9910CSG-G package?
The exposed thermal pad in the HV9910CSG-G's 8-lead SOIC-SG package provides a low-thermal-resistance path from the die to the PCB, achieving θJA = 84°C/W - significantly better than standard 8-lead SOIC (101°C/W). This pad must be soldered to a large copper pour for effective heat dissipation, enabling higher continuous output current and improved reliability in thermally constrained LED driver designs.
HV9910CSG-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 15V
- Voltage - Supply (Max):
- 450V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 25kHz, 100kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting, Signage
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
HV9910CSG-G FAQ
1.How can I place an order for HV9910CSG-G through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9910CSG-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 HV9910CSG-G reliable?
The price and inventory of HV9910CSG-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HV9910CSG-G is usually 5 days.
3.What payment methods are accepted for HV9910CSG-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9910CSG-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9910CSG-G?
HV9910CSG-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9910CSG-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 HV9910CSG-G?
For technical support, including HV9910CSG-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9910CSG-G requirements.
6.How does Aetrix verify that HV9910CSG-G is sourced from the original manufacturer or authorized distributors?
All HV9910CSG-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 HV9910CSG-G meets industry standards.
7.What is the process for return or replacement of HV9910CSG-G?
All HV9910CSG-G units undergo pre-shipment inspection (PSI). If there is an issue with HV9910CSG-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 HV9910CSG-G part is unused and in its original packaging.
Return procedure for HV9910CSG-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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