LV8498CT: Motor Driver, Constant Current, Control Voice Coil
The LV8498CT is a constant current driver IC for voice coil motors that supports I2C control integrating a digital/analog converter (DAC). It uses an ultraminiature WLP package and includes a current detection resistor for constant current control, which makes the IC ideal for miniaturization of camera modules intended for use in camera-equipped mobile phones. The output transistor has a low on-resistance of 1 Ω and the resistance of the built-in current detection resistor is 1 Ω, which minimizes the voltage loss and helps withstand voltage drop in VCC. The function is incorporated, which, by changing the current in a stepped pattern while taking time at rise and fall of the output current, provides the current a slope, improving the converging stability of the voice coil motor (current slope function).
Features- I2C bus control supported.
- Wide operating voltage range (2.2 to 5.0V).
- Built-in current detection resistor.
- 6-pin WLP package used (1.27 0.87 0.25mm).
- Built-in voltage drop protection circuit (VCC = 2V output off).
- Built-in thermal protection circuit.
- Constant current control enabled by 10bit DAC
- Less External Component
- Stand-by current: 0A
- Constant current driver for voice coil motors.
- Low output block total-resistance of 2Ω helps withstand voltage drop in VCC. (Current detection resistance + outputtransistor on-resistance).
- Built-in VCM overshoot preventive function (current slope function).
- Power supply Voltage: 2.2 to 5.0V
| Benefits- Easy control
- Wide power supply application
- Current limit protection
- Small mounting space
- Voltage drop protection
- Thermal protection
- Improving the converging stability of the AF-VCM
- Simple Design
- Low consumption
|
Applications | End Products- Feature Phone
- Smartphone
- Tablet
- Camera for mobile phone
- Pocket movie Camera
|
Software (1)
Package Drawings (1)
Application Notes (1)
Evaluation Board Documents (5)
Data Sheets (1)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| LV8498CTGEVB | Active | | Constant Current Driver IC Evaluation Board |
| LV8498CTGEVK | Active | | LSI Evaluation Board Kit |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LV8498CT-TE-L-H | Active | Pb-free
Halide free | WLCSP-6 / WLP-6K | 567ES | 1 | Tape and Reel | 5000 | $0.291 |
Specifications
| Product | Number of Drivers | VCC Max (V) | V(BR)GSS Max (V) | V(BR)DSS Max (V) | ID Max (A) | rDS(on) Max (Ω) | Tj Max (°C) |
|---|
| LV8498CT-TE-L-H | 1 | 5.5 | | VCC+0.5 | 0.2 | 2 | |
