My Inquiry
My Account
Microchip Technology HV9805MG-G
- Part No.:
- HV9805MG-G
- Manufacturer:
- Microchip Technology
- Category:
- LED Drivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
HV9805MG-G.pdf
- Description:
- IC LED DRIVER OFFL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:811
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HV9805MG-G from Microchip Technology is a two-stage AC/DC LED driver IC combining a boundary conduction mode (BCM) boost converter with power factor correction and a linear post-regulator for true DC LED current. It delivers 98% typical power factor, 90% typical efficiency, ±4% reference accuracy over temperature, and supports up to 25W at 120VAC or 50W at 230VAC in LED lamp and fixture applications.
For engineers reviewing the HV9805MG-G datasheet, HV9805MG-G pinout, HV9805MG-G application, or HV9805MG-G equivalent, this page provides verified technical context, confirmed pin functions, real-world design meaning of key specs, and validated alternative options for LED driver design and sourcing decisions.
Technical Context
The HV9805MG-G implements a two-stage topology: the first stage uses a cascode-switched BCM boost converter with internal 700 mA peak-rated control FET to achieve high power factor and efficiency; the second stage employs a low-overhead linear constant-current regulator with programmable headroom voltage control via HVS/HVR feedback to eliminate LED current ripple and provide overvoltage protection.
Its regulation architecture includes four independent feedback loops - VDD supply, LED current (CRS/CRG), headroom voltage (HVS/HVR), and line current waveform (CSL/CSH) - coordinated by a state machine (IDLE/START/RUN) and bus voltage comparators (BVS) to manage startup, transient response, and thermal shutdown at 145°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Two-stage: BCM boost PFC + linear constant-current regulator |
| Power Factor | 98% typical - enables compliance with IEC 61000-3-2 Class C for lighting |
| Efficiency | 90% typical - reduces thermal load and heatsink requirements in enclosed fixtures |
| LED Current Ripple | Zero - linear post-regulator eliminates 100/120 Hz ripple without output capacitance |
| Max Output Power | 25W @ 120VAC / 50W @ 230VAC - defines usable range for retrofit lamps and downlights |
| Operating Temp | −40°C to +125°C junction - supports operation in thermally constrained LED housings |
| VDD Supply | No auxiliary winding required - simplifies transformer design and reduces BOM count |
Pinout & Package
HV9805MG-G is housed in a 10-lead MSOP package (3.0 mm × 3.0 mm, 0.5 mm pitch) with exposed thermal pad for enhanced thermal performance in high-power LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | VDD supply support | Internal linear + switching regulator input; requires 10 µF ceramic capacitor to ground for holdup near AC zero-crossings |
| 2 - CSL | Non-inverting current sense input (Stage 1) | Senses boost inductor current for PFC shaping; differential pair with CSH, offset 1.25 V |
| 3 - CSH | Inverting current sense input (Stage 1) | Completes differential sensing; gain set by external 10 kΩ RCSA resistors |
| 4 - HVS | Headroom voltage sense input | Connects to drain of LED pass FET via resistor divider; requires Zener clamp (ZHVS) for overvoltage protection at shutdown |
| 5 - HVR | Headroom voltage regulator output | Drives boost on-time via external RC compensation network to maintain optimal headroom (e.g., 6 V min) |
| 6 - CRS | LED current sense input (Stage 2) | Connects to LED sense resistor (RCRS); sets ILED = VREF,CCR / RCRS = 1.00 V / RCRS |
| 7 - CRG | Constant-current regulator gate drive | Outputs 4.5 V max, 2 mA sink/1.5 mA source - drives logic-level MOSFET gate directly |
| 8 - BVS | Bus voltage sense input | Monitors bulk capacitor voltage via resistor divider for UVLO (0.4–0.5 V) and OVLO (1.11–1.31 V) |
| 9 - GND | Ground reference | Common return for all analog and power circuits; must be low-impedance connection to thermal pad |
| 10 - DRV | Boost switch drive output | Sources current to external FET source terminal; requires Zener to ground for turn-off voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| True DC LED current output | Eliminates brightness flicker and EMI from switching ripple - critical for video, medical, and high-end residential lighting |
| Integrated cascode boost switch control | Enables single-FET boost stage with self-powered VDD generation - removes need for auxiliary winding or startup circuit |
| Programmable headroom voltage regulation | Minimizes linear regulator dissipation (PDIS = ILED × VHDC) while maintaining regulation across LED VF drift and line transients |
| Overvoltage protection for LEDs | HVS-sensed headroom control prevents LED overvoltage during bus capacitor discharge after AC removal |
| ±4% reference accuracy over temperature | Ensures stable LED current across −40°C to +125°C ambient - avoids luminous flux drift in outdoor or enclosed fixtures |
Applications
| LED Retrofit Lamps | Commercial Downlights |
|---|---|
|
Use Scenario: Replacement of incandescent or CFL bulbs in E26/E27 sockets with integrated driver and high-voltage LED string. IC Role / Device Role: Primary controller for two-stage AC/DC conversion, providing PFC, isolated-free constant current, and thermal foldback. Use Value: Enables compact form factor with no electrolytic output capacitor, extending lifetime beyond 25,000 hours under thermal stress. |
Use Scenario: Recessed troffer or panel light operating from 230VAC mains with >40 V LED string and dimming compatibility. IC Role / Device Role: High-efficiency linear post-regulator driver ensuring zero-current-ripple dimming performance with trailing-edge phase-cut dimmers. Use Value: Delivers flicker-free dimming to 1% without additional filtering, meeting IEEE 1789-2015 low-risk flicker requirements. |
| Industrial Area Lighting | Outdoor Streetlight Modules |
|
Use Scenario: High-bay warehouse fixture with 48–72 V LED array, requiring robust operation across −30°C to +70°C ambient. IC Role / Device Role: Main LED driver IC managing bus voltage regulation, overtemperature shutdown (145°C), and line transient immunity. Use Value: Maintains regulated LED current despite 10% line sags and 20% surges - avoids visible output drop during motor starts or grid fluctuations. |
Use Scenario: IP66-rated streetlight using 100–150 V LED string powered from 230VAC with surge protection per IEC 61000-4-5 Level 4. IC Role / Device Role: Core driver enabling high-voltage LED architecture that reduces system current, improving wiring efficiency and thermal management. Use Value: Supports >50W output with <15 W driver losses - lowers thermal interface resistance and extends driver lifetime in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30001DR2G | Single-stage flyback PFC controller; no linear post-regulator; 93% PF, 85% eff; requires optocoupler for secondary-side regulation | Higher component count, larger transformer, and inherent 100/120 Hz ripple - unsuitable where zero-ripple is mandatory | Select when cost sensitivity outweighs flicker performance and thermal constraints allow higher dissipation |
| Diodes Incorporated AL1676S16-13 | Two-stage controller with external boost + linear regulator; supports SEPIC for low-VF LEDs; 95% PF, 88% eff; no integrated cascode drive | Lacks integrated VDD generation - needs auxiliary winding or startup resistor; less compact layout than HV9805MG-G | Choose for designs requiring <30 V LED strings or needing flexibility in topology selection beyond boost-only |
Compared with NCL30001DR2G and AL1676S16-13, HV9805MG-G uniquely integrates cascode boost drive and zero-ripple linear regulation in one die, reducing external components by ≥30% and eliminating output capacitor aging concerns - critical for long-life, maintenance-free LED installations.
Availability
HV9805MG-G is available at Aetrix Electronics and suitable for LED retrofit lamps, commercial downlights, and industrial area lighting requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for HV9805MG-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 company specializing in microcontrollers, analog devices, and power management ICs, with broad automotive, industrial, and lighting portfolio certification.
HV9805MG-G belongs to Microchip's high-voltage LED driver product line, designed specifically for cost-sensitive, high-reliability AC/DC LED lighting applications where flicker-free operation and simplified transformer design are primary objectives.
FAQ
What is the maximum LED string voltage supported by HV9805MG-G?
HV9805MG-G supports high-voltage LED strings - typically 48 V to 150 V - enabled by its headroom voltage regulation architecture. The IC itself does not impose a fixed upper limit; instead, the maximum string voltage depends on the selected external pass FET's VDS rating and the programmed headroom (e.g., 6 V minimum). In practice, designs using HV9805MG-G routinely operate with 100–120 V LED strings at 230VAC input, leveraging the high-voltage architecture to reduce system current and improve thermal efficiency. HV9805MG-G's HVS pin monitoring and Zener protection ensure safe operation even during bus capacitor discharge events.
Does HV9805MG-G require an auxiliary winding for VDD startup?
No, HV9805MG-G does not require an auxiliary winding for VDD startup. Its integrated cascode boost switch architecture allows VDD to be powered directly from the boost inductor current path via the DRV pin and internal diode/FET structure. A 10 µF ceramic capacitor between VDD and GND provides sufficient holdup near AC zero-crossings. This eliminates the need for an auxiliary winding, reducing transformer complexity, cost, and leakage inductance - a key differentiator versus conventional flyback or boost controllers. HV9805MG-G's dual-mode VDD regulator (linear at startup, switching during RUN) ensures reliable start-up across full line voltage range.
Can HV9805MG-G be used with 12V or 24V low-voltage LED strings?
HV9805MG-G is optimized for high-voltage LED strings (≥48 V) and is not recommended for direct use with 12 V or 24 V LED loads. Its headroom regulation architecture assumes sufficient bus-to-LED voltage differential to maintain linear regulator control margin. Using it with low-VF strings risks loss of regulation during line sags or temperature drift, potentially causing overcurrent. For low-voltage applications, Microchip recommends the HV9910C or compatible SEPIC-capable variants - though HV9805MG-G's datasheet notes SEPIC compatibility, that requires significant re-engineering of feedback and compensation networks and is not validated for production use. HV9805MG-G's design intent remains high-voltage, high-efficiency retrofit lighting.
How does HV9805MG-G protect LEDs during AC line transients?
HV9805MG-G protects LEDs during AC line transients through three coordinated mechanisms: (1) the linear post-regulator inherently blocks bus voltage spikes from reaching the LED string, (2) the headroom voltage regulator dynamically adjusts boost output to maintain safe headroom even during overvoltage events, and (3) the HVS pin monitoring with external Zener clamp (ZHVS) prevents damage to the IC's internal circuitry during sustained overvoltage conditions after AC removal. Unlike switching regulators that may pass transients through coupling paths, HV9805MG-G's architecture ensures true DC current continuity - a feature explicitly highlighted in its "True DC Light" marketing claim. HV9805MG-G's bus voltage comparators (BVS) also trigger immediate shutdown for overvoltage (>1.31 V sensed) or undervoltage (<0.36 V), adding layer-specific protection.
What is the role of the CRS and CRG pins in HV9805MG-G operation?
The CRS pin is the input to the second-stage current sense amplifier, connected directly to the LED current sense resistor (RCRS); it establishes the feedback signal for constant-current regulation. The CRG pin is the output of the constant-current regulator control amplifier, driving the gate of the external pass FET. HV9805MG-G's CRG delivers up to 4.5 V and 2 mA sink current, optimized for logic-level MOSFETs - standard gate FETs require level-shifting due to limited VGS headroom (~3.5 V max). During RUN state, CRS references a precise 1.00 V internal reference (±4% over temperature), setting ILED = 1.00 V / RCRS. HV9805MG-G's dual-reference architecture (200 mV in START state) also enables controlled bus voltage ramp-up without LED flash.
HV9805MG-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- SEPIC, Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 7.9V
- Voltage - Supply (Max):
- 8.6V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
HV9805MG-G FAQ
1.How can I place an order for HV9805MG-G through Aetrix?
Please submit a Request for Quotation (RFQ) for HV9805MG-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 HV9805MG-G reliable?
The price and inventory of HV9805MG-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HV9805MG-G is usually 5 days.
3.What payment methods are accepted for HV9805MG-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HV9805MG-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HV9805MG-G?
HV9805MG-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HV9805MG-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 HV9805MG-G?
For technical support, including HV9805MG-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HV9805MG-G requirements.
6.How does Aetrix verify that HV9805MG-G is sourced from the original manufacturer or authorized distributors?
All HV9805MG-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 HV9805MG-G meets industry standards.
7.What is the process for return or replacement of HV9805MG-G?
All HV9805MG-G units undergo pre-shipment inspection (PSI). If there is an issue with HV9805MG-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 HV9805MG-G part is unused and in its original packaging.
Return procedure for HV9805MG-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HV9805MG-G Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
