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PDF SA56203 Data sheet ( Hoja de datos )
| Número de pieza | SA56203 | |
| Descripción | One-chip motor driver | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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SA56203
One-chip motor driver
Rev. 01 — 30 September 2004
Preliminary data sheet
1. General description
The SA56203 is a one-chip motor driver IC that is capable of driving all motors of CD or
DVD systems e.g. spindle, sled and loading motors and actuators on the optical pick-up
unit. The driver intended for the 3-phase, brushless, Hall-commutated spindle motor uses
PWM switching. Internal regeneration of the back EMF of the spindle motor enables the
driver to operate in current-steering mode without using external power-dissipating sense
resistors. The driver for the 2-phase sled stepper motor operates in current-steering PWM
mode. In addition the IC contains four full-bridge linear channels that can be used to drive
a loading motor and 3D actuators (focus, tracking and tilt).
The SA56203 is available in an exposed die pad HTSSOP56 package.
2. Features
s Low heat generation due to power-efficient direct full-bridge switching of spindle motor
driver
s Controlled spindle motor current during acceleration and brake
s Reverse torque brake function (full bridge)
s Adjustable spindle motor current limiter
s Internal regeneration for EMF of spindlewww.DataSheet.co.kr motor
s Current-steering PWM controlled stepper motor driver for sled
s Four class-AB linear channels for loading motor and 3D actuators (focus, tracking and
tilt)
s Tracking actuator driver with back EMF amplifier
s Loading motor driver with transresistance amplifier for loading current
s Low on-resistance D-MOSFET output power stages
s Built-in thermal shutdown and thermal warning
s Interfaces to 3 V and 5 V logic
s Package with low thermal resistance to heatsink (reflowable die pad)
s Lead free package.
3. Applications
s DVD+RW, DVD-RW and DVD-RAM
s Combi
s CD-RW
s Other compact disc media.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
Philips Semiconductors
SA56203
One-chip motor driver
Table 2: Pin description …continued
Symbol
Pin Description
REMF
9 external resistor for EMF regeneration
RLIM
10 external resistor for current limit
VSS1(SPN)
U
11
12
spindle driver ground 1
spindle driver output U
VDD1(SPN)
V
13
14
spindle driver supply voltage 1
spindle driver output V
VSS2(SPN)
W
15
16
spindle driver ground 2
spindle driver output W
VDD2(SPN)
FG
17
18
spindle driver supply voltage 2
frequency generator output
VSSA
19 analog ground
VINSPN 20 spindle driver input voltage for spindle motor current
VINREF
21 reference input voltage for all motor drivers
VDDA
CP1
22 analog supply voltage
23 charge pump capacitor connection 1
CP2 24 charge pump capacitor connection 2
CP3 25 charge pump capacitor connection 3
CTL1
26 driver logic control input 1
CTL2
27 driver logic control input 2
TEMP
28
thermal warningwww.DataSheet.co.kr
VINSLD1
29
sled driver 1 input for sled motor current
VINSLD2
30
sled driver 2 input for sled motor current
VLDTRK 31 voltage output loader/track
VSS(SLD)
32 sled driver ground
SLDO2− 33 sled driver output 2 negative
SLDO2+ 34 sled driver output 2 positive
RSLD2
35 sled driver 2 current sense
SLDO1− 36 sled driver output 1 negative
SLDO1+ 37 sled driver output 1 positive
RSLD1
38 sled driver 1 current sense
VDD(SLD) 39 sled driver sense supply voltage
TLTO−
40 tilting driver output negative
TLTO+
41 tilting driver output positive
FCSO−
42 focus driver output negative
FCSO+
43 focus driver output positive
VDD(ACT) 44 focus/tilt drivers supply voltage
VSS(ACT)
45 actuator drivers ground
TRKO−
46 tracking driver output negative
TRKO+
47 tracking driver output positive
LDO−
48 loading driver output negative
LDO+
49 loading driver output positive
9397 750 13365
Preliminary data sheet
Rev. 01 — 30 September 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
5 of 27
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Philips Semiconductors
SA56203
One-chip motor driver
7.8 Loading motor driver
One of the linear channels is available to drive a DC loading motor. Pin VDD(LD) is used to
set the supply voltage for the loading motor driver. The following voltage-steering bridge
topology is implemented in the SA56203.
VINLD
47 kΩ
47 kΩ
23.5 kΩ
VINREF
47 kΩ
47 kΩ
47 kΩ
188 kΩ
188 kΩ
188 kΩ
R
R
47 kΩ
188 kΩ
LDO −
VDD(LD)
LDO +
Fig 10. Voltage steering bridge topology of linear driver.
001aab246
7.9 Actuator motor drivers
www.DataSheet.co.kr
Three linear channels are available to drive 3D actuators: focus, tracking and tilt. Pin
VDD(ACT) is used to set the supply voltage for the focus and tilt actuators (maximum 5.5 V).
A separate pin VDD(TRK) sets the supply voltage for the tracking actuator (maximum 14 V).
The voltage-steering bridge topology is the same as depicted in Figure 10.
7.10 Charge pump
The on-board charge pump generates a voltage of typically 18.2 V by using the VDD(SPN)
supply voltage. This boosted voltage is used to turn on the upper n-type DMOS transistors
of the output stages of the spindle driver, sled driver, loading driver and actuator drivers.
Recommended values for the pump and hold capacitor are 10 nF and 22 nF respectively
(see default settings). The charge pump should not be loaded with other components or
circuitry other than these capacitors.
7.11 Thermal protection
If the junction temperature of the SA56203 exceeds 150 °C, then a thermal warning signal
is given at pin TEMP. Pin TEMP has an active-LOW open-drain output for easy interfacing
to the 3 V and 5 V logic. The temperature hysteresis for the thermal warning is 20 °C. If
the junction temperature of the IC rises to 160 °C, then a thermal shutdown is activated
that sets all power outputs in 3-state. The temperature hysteresis for the thermal
shutdown is 30 °C. As soon as the thermal shutdown deactivates at 130 °C, all motor
drivers continue normal operation. At the same time the thermal warning signal is
deactivated.
9397 750 13365
Preliminary data sheet
Rev. 01 — 30 September 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
11 of 27
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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