AM4951：Single Phase BTL Linear Drivers
| Part Number | Data Sheet | SPICE Model | Operating Voltage (V) | SupplyCurrent (mA) | Average OutputDrive Current (mA) | Peak Output Current (mA) | Reference Voltage Output (V) | Hall Bias Voltage (V) | Speed Control | Speed Control Slope Adjust | Lock Detect, Shut-Down and Auto Start | Frequency Generator (FG) and Rotation Detect (RD) | Other Protection Features | Operating Ambient Temperature (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AM4951 | AM4951_2.pdf | - | 2.2 to 24 | 5 | - | 500 | - | 0 | VDD | - | Yes | FG | Thermal Shutdown | -40 to +105 |
Description
The AM4951/R/2 series is a single-phase BTL output fan motor driver designed by bipolar process. This IC features high efficiency, silent operation and includes lock shutdown and automatic restart functions. When the motor is under lock condition, the lock shutdown function turns off the output current. When the lock condition is removed, the IC will restart automatically and allow DC fan to run. It is applied for high reliability and low noise application, such as personal computers, notebook, car audio, CPU cooling systems and power supplies in consumer electronics systems.
Application
- Notebook, Personal Computers
- Power Supplies in Consumer Electronics, Car Audio and Office Peripherals
- CPU Cooling Systems
Features
- BTL Output Single-phase Full-wave Linear Drive (Gain Resistor=1k to 360kΩ, Gain=51dB)
- Support Low-voltage Drive and Feature a Wide Usable Voltage Range (2.2V to 24V)
- Low Saturation Output (High Side and Low Side Saturation Voltage): VSAT_TOTAL=1.2V (typical, IOUT=200mA)
- Built-in Lock Protection and Automatic Restart Circuits
- Built-in FG/RD Output
- Built-in Hall Sensor Bias (AM4952 Only, VHB=1.5V)
- Thermal Protection Circuit
- Small-sized, High Thermal Capacity Package
- FG Output (AM4951), RD Output (AM4951R),
Ordering Information
- AM4951RMMTR-G1
MSOP-8
- AM4951_2.pdf AM4951R
