L7200FCBENZ1469, L7203, L7204-001 Selling Leads, Datasheet
MFG:NEW Package Cooled:SOP20 D/C:O4
L7200FCBENZ1469, L7203, L7204-001 Datasheet download
Part Number: L7200FCBENZ1469
MFG: NEW
Package Cooled: SOP20
D/C: O4
L7200FCBENZ1469, L7203, L7204-001
- Table of contents:
Info of L7200FCBENZ1469
Info of L7203
Info of L7204-001
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About L7200
PDF/DataSheet Download
Datasheet: L7200
File Size: 268434 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
About L7203
PDF/DataSheet Download
Datasheet: L7203
File Size: 174296 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
About L7200
PDF/DataSheet Download
Datasheet: L7200
File Size: 268434 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
L7203 General Description
The L7203 SPINDLE MOTOR IC includes a three phase brushless spindle motor controller and the power stage in switching mode. The device is designed for both 5V and 12V OPTICAL DRIVE application requiring up to 1.8A peak of current.
The device is realized in BCD5, a 0.7 mm Mixed technology.
The spindle motor position detection is carried out by means of a single comparator with hysteresis. In the start-up phase the "inductive sense start up method" is used to detect the rotor position, determining the direction of starting rotation.
This procedure is implemented by a logic circuit on chip.
The device applies three sinusoidal voltages to the motor coils.
This is obtained through the application of the SMOOTH DRIVING concept.
It is based on the idea of driving the motor winding through 3 sinusoidal voltages dephased of 120 degrees. The motor is controlled in voltage mode, so no current control compensation network is required.
Each profile is digitally described by 36 bytes stored in a ROM memory.
These sinusoidal signals are modulated by multiplying each sample by a value stored in the KVAL register. Using this kind of profiles it is possible to obtain great advantages such as torque ripple and acoustic noise reduction and lower EMI. An easier track following is ensured, since vibration are reduced.
The clock signal on the chip can be synchronized to the external application clock signal.
An internal circuit can limit the current. The threshold is fixed with a internal 0.2 V reference.
The device generates:
- a current generator to define output voltage slew rate
- a 3.3 V reference to bias hall sensor.
- the HFG open drain output signal for speed regulation.
The device includes :
- a circuit for thermal shutdown with hysteresis.
- a low voltage detector
In the STANDBY state the main functions of the device are turned off, in order to minimize the power consumption.
The STANDBY state of the device is imposed by:
- Thermal shutdown
- stand by signal from mP
L7203 Maximum Ratings
| Symbol | Symbol | Value | Unit |
| Tamb | Ambient Temperature | -20 to 80 | °C |
| Top | Operating Temperature | 0 to 150 | °C |
| Tsmin | Minimum Thermal Circuit Threshold | 140 | °C |
| VM | -0.3 to 15 | Vdc | |
| VCC | -0.3 to 7 | Vdc | |
| U, V, W, (low side drive =off) | -0.3 to 17 | Vdc | |
| PWMIN, PHS, FSYS, TEST, STB, HFG, BIAS, H+, H-, RF1, RF, ISR, PORPin |
-0.3 to VCC+0.3 | Vdc | |
| PD1 | Power dissipation at sustained operation with a package Rthj-amb at 90°C |
1 | W |
| ESD | Susceptibility | 2000 | Vdc |
| TSTG | Storage Temperature | -55 to 150 | °C |
| IOLHFG | HFG open drain current | 10 | mA |
| IPeak | Motor Peak Current | 1.8 | A |
L7203 Features
·SMOOTH DRIVETM SYSTEM
·1.8A DRIVE PEAK CAPABILITY
·SLEW RATE CONTROL
·INDUCTIVE SENSE START-UP ROUTINE
·THERMAL SHUTDOWN
·SUITABLE FOR 5V AND 12V APPLICATION
·ONLY ONE HALL SENSOR IS REQUIRED
·1.8A DRIVE PEAK CAPABILITY
·SLEW RATE CONTROL
·INDUCTIVE SENSE START-UP ROUTINE
·THERMAL SHUTDOWN
·SUITABLE FOR 5V AND 12V APPLICATION
·ONLY ONE HALL SENSOR IS REQUIRED
L7203 Connection Diagram
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