LC898201: Drive Controller, Iris/Zoom/Focus, and Day-Night Switch
LC898201 is the appropriate motor control LSI for the surveillance camera usage, and it can drive iris, focus, zoom and Day/Night switching simultaneously. It incorporates two feedback circuits for iris and focus control, and two stepper motor control circuits for zoom and Day/Night switching. Moreover, the feedback control applies iris control, and stepper motor controls apply focus, zoom and Day/Night switching at the mode selection. Stepper motor control circuits can drive the stepping motor efficiently(It is called “ECO(GREEN)-driver”).
Features- Built-in equalizer circuit by digital operation- Iris control equalizer circuit- Focus control equalizer circuit (MR sensor can be connected.)- Coefficients can be set arbitrarily through the SPI interface.- Computed values in the equalizer can be monitored.
- Built-in 3ch stepping motor control circuits (2ch are equipped with “ECO(GREEN)-driver” circuits)
- SPI bus interface
- PI control circuit- 30mA Sink output terminal- Built-in PI detecting function (A/D method)
- A/D converter- 12bit (6ch): Iris, Focus, ECO, PI detection
- D/A converter- 8bit (5ch): Hall offset, Constant current bias, MR Sensor offset, ECO offset
- Operation Amplifier- 4ch (ECO x1, Iris control x1, Focus control x2)
- PWM pulse generator- PWM Pulse generator for feedback control (Up to 12bit accuracy)- PWM pulse generator for stepper motor control (Up to 1024 micro steps)- PWM pulse generator for general-purpose H-Bridge (128 voltage levels)
- Motor Driver- ch1 to ch6 : Io max=200mA- ch7 : Io max=300mA- Built-in thermal protection circuit- Built-in low-voltage malfunction prevention circuit
- OSC (Type. 48MHz)
- Power supply voltage- Logic unit : 2.7V to 3.6V (IO, Internal core)- Driver unit : 2.7V to 5.5V (Motor drive)
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Data Sheets (1)
Package Drawings (2)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LC898201RA-NH | Active | Pb-free
Halide free | FBGA-64 | 113BL | 3 | Tape and Reel | 1000 | $4.7759 |
| LC898201TA-NH | Active | Pb-free
Halide free | TQFP-64 | 932BC | 3 | Tape and Reel | 1000 | $4.7759 |
Specifications
| Product | VM Min (V) | VM Max (V) | VCC Min (V) | VCC Max (V) | IO Max (A) | IO Peak Max (A) | Step Resolution | Control Type | Feedback Method | Current Sense | Regulator Output | Fault Detection | Flyback Protection | RDS(on) Typ (Ω) |
|---|
| LC898201RA-NH | 2.7 | 5.5 | 2.7 | 3.6 | 0.2/0.3 | 0.3/0.45 | 1/1024 | SPI | Back EMF/Sensorless | External Resistor | | Thermal | Integrated Active | 1.3 |
| LC898201TA-NH | 2.7 | 5.5 | 2.7 | 3.6 | 0.2/0.3 | 0.3/0.45 | 1/1024 | SPI | Back EMF/Sensorless | External Resistor | | Thermal | Integrated Active | 1.3 |
