GC4939
7.5V~36V QFN-28 Motor Drivers, Controllers RoHS
Three-phase brushless DC motor pre-driver chip
- Manufacturer
- SX-globalchip
- Manufacturer part #
- GC4939
- Store part #
- C16197201
- Package / case
- QFN-28
- Category
- Motor Drivers, Controllers
- Packaging
- Tape & Reel (TR)
Every Order Guarantee
100% Authentic · 30-Day Return or Replacement · policy
4,501 in stock
#C16197201
Stock & price checked 5 days ago
| Quantity | Unit price | Pack price |
|---|---|---|
| 1+ | ₹61.45 | ₹61.45 |
| 10+ | ₹54.34 | ₹543.40 |
| 30+ | ₹50.96 | ₹1,528.80 |
| 100+ | ₹47.42 | ₹4,742.00 |
| 500+ | ₹45.29 | ₹22,645.00 |
| 1,000+ | ₹44.22 | ₹44,220.00 |
1 × ₹61.45
₹61.45
excl. GST
₹72.51 incl. 18% GST
- Dispatch in 7–10 working days
- GST invoice with every order
- Standard pack: 5,000 per reel
GC4939
₹61.45 for 1 + GST
Specifications
- Drive Type
- Three Phase
- Features
- Interleaved conduction protection;Motor stall protection;Motor speed indication
- Technology
- No
- Voltage - Supply
- 7.5V~36V
- Operating Temperature
- -40℃~+110℃
- Supply Current (Iq)
- 3.3mA
- Output Current
- 30mA
- Number of Half Bridges
- 3
Packaging & compliance
- RoHS
- ROHS Compliant
- Lifecycle
- Active
- Packaging
- Tape & Reel (TR)
- Standard pack
- 5,000 / Reel
- Sold per
- Piece
- Minimum order
- 1
- Unit weight
- 0.161 g
Overview
GC4939 is a three-phase brushless DC motor pre-driver IC. It drives N-type power MOSFETs with a maximum supply voltage of 36V. State transition logic is determined by three Hall inputs with 120° phase difference. The IC integrates fixed decay-time pulse modulation for current control and inrush current suppression; adjustable locked-rotor protection time; over-temperature protection, over-voltage monitoring, and synchronous rectification. The built-in synchronous rectifier reduces power dissipation by turning on the appropriate low-RDS(on) switches during the decay period, replacing freewheeling diodes. When an over-voltage condition is detected, synchronous rectification is disabled to reduce supply voltage fluctuations caused by varying currents. GC4939 logic inputs include enable control (ENABLE), direction control (DIR), brake control (BRAKEZ), and noise control (SYN); logic output FG2 corresponds to the Hall signal and can be used for speed monitoring. Operating temperature range: -40~110℃. Package: 28-pin QFN, 5mm×5mm, with exposed thermal pad on the bottom.
Key features
- Drives three half-bridges (6 NMOS)
- Wide voltage range: 7.5~36V
- Low-power synchronous rectification
- Hall sensor input
- Built-in UVLO and over-temperature protection
- Low-current sleep mode
- FG speed output
- Dead-time shoot-through prevention
- Locked-rotor protection
- Overvoltage protection
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