TDA5341 Datasheet, PDF (2/28 Pages) NXP Semiconductors – Brushless DC motor and VCM drive circuit with speed control

Philips Semiconductors
Brushless DC motor and VCM drive circuit
with speed control
Product specification
TDA5341
FEATURES
• Full-wave commutation (using push-pull output stages)
without position sensors
• Built-in start-up circuitry
• Three push-pull MOS outputs:
– 1 A output current
– Low voltage drop
– Built-in current limiter
• Thermal protection
• General purpose operational amplifier
• Reset generator
• Motor brake facility
• Actuator driver (H-bridge current-controlled)
• Power-down detector
• Automatic park and brake procedure
• Adjustable park voltage
• Sleep mode
• Speed control with Frequency-Locked Loop (FLL)
• Serial port
• Friction reduction prior to spin-up.
APPLICATIONS
• Hard Disk Drive (HDD).
GENERAL DESCRIPTION
The TDA5341 is a BiCMOS integrated circuit used to drive
brushless DC motors in full-wave mode. The device
senses the rotor position using an EMF sensing technique
and is ideally suited as a drive circuit for a hard disk drive
motor.
The TDA5341 also includes a Voice Coil Motor driver
(VCM), reset and park facilities and an accurate speed
regulator. In addition, a serial port facilitates the control of
the device.
QUICK REFERENCE DATA
Measured over full voltage and temperature range.
SYMBOL
PARAMETER
V_DD
I_oMOT
R_DS(MOT)
I_oACT
R_DS(ACT)
general supply voltage for logic and power
motor output current
motor output resistance
actuator output current
actuator output resistance
MIN.
4.5
1.3
−
0.7
−
TYP.
5.0
1.6
1.1
1.1
2.0
MAX.
5.25
1.9
1.56
1.4
2.5
UNIT
V
A
Ω
A
Ω
ORDERING INFORMATION
TYPE
NUMBER
TDA5341G
PACKAGE
NAME
DESCRIPTION
LQFP64 plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm
VERSION
SOT314-2
1997 Jul 10
2