Datasheet

UTC UA8868S
LINEAR INTEGRATED CIRCUIT
5-CHANNEL BTL DRIVER FOR DVD PLAYER
DESCRIPTION
The UTC UA8868S is a five-channel BTL driver IC for
driving the
motors and actuators such as used in DVD player and
CD-ROM.
FEATURES
* Built-in 5 channel drivers:
Dual actuator drivers
Sled motor driver
Spindle driver
Tray in-out driver
HSOP-28
* Built-in Two independent comparators
* Thermal shut down and Mute circuit.
*Pb-free plating product number: UA8868SL
BLOCK DIAGRAM
28
27
26
25
24
23
22
21
+
60K
MUTE and
Thermal
Shut down
20
19
17
16
15
Vcc2
90K
60K
Spindle
Driver
+
-
+ -
18
PGND
GND
Actuator
Driver (4x)
225K
Vcc2
Vcc2
+
225K
-
60K
150K
+
UTC
Sled
Driver
Pre-DRV
60K
1
Vcc1
+
-
2
3
PGND Vcc1
4
5
6
7
8
TRAY
DRIVER
9
10
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
Actuator
Driver (4x)
11
12
13
14
CO., LTD.
1
QW-R109-021,B
UTC UA8868S
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO
PIN NAME
FUNCTION
1
VINFC
Input for focus driver
2
OP2INComparator 2 input (-)
3
OP2IN+
Comparator 2 input (+)
4
VINSL+
Input for the sled driver
5
OP2OUT
Comparator 2 output
6
FWD
Tray driver forward input
7
REV
Tray driver reverse input
8
VCC1
Vcc for pre-drive block and power block of sled and tray
9
VOTRTray driver output (-)
10
VOTR+
Tray driver output (+)
11
VOSL+
Sled driver output (+)
12
VOSLSled driver output (-)
13
VOFCFocus driver output (-)
14
VOFC+
Focus driver output (+)
15
VOTK+
Tracking driver output (+)
16
VOTKTracking driver output (-)
17
VOLD+
Spindle driver output (+)
18
VOLDSpindle driver output (-)
19
VCC2
Vcc for power block of spindle, tracking and focus
20
OP1OUT
Comparator 1 output
21
VCTL
Speed control input of tray driver
22
GND
Ground
23
VINLD
Input for spindle driver
24
OP1INComparator 1 input (-)
PIN NO
PIN NAME
FUNCTION
25
OP1IN+
Comparator 1 input (+)
26
VINTK
Input for tracking driver
27
BIAS
Input for reference voltage
28
MUTE
Input for mute control
Notes: Pin Name of + and – (output of drivers) means polarity to input pin.
(For example, if voltage of pin1 is high, pin14 is high.)
ABSOLUTE MAXIMUM RATINGS
(Ta=25℃)
PARAMETER
SYMBOL
Vcc1
Supply Voltage
Vcc2
Power dissipation
Pd
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
*When mounted on a 70mm ×70mm ×1.6mm glass epoxy board.
*Reduced by 13.6mW for each increase in Ta of 1℃ over 25℃.
**Should not exceed Pd or ASO and Tj=150℃ values
UTC
RATINGS
UNIT
15
V
*1.7
-35 ~ +85
**-55 ~ +150
W
℃
℃
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
2
QW-R109-021,B
UTC UA8868S
LINEAR INTEGRATED CIRCUIT
GUARANTEED OPERATING CONDITIONS
(Ta=25℃)
PARAMETER
SYMBOL
Vcc1
Vcc2
Power supply voltage
RATINGS
4.3 ~ 13.2
4.3 ~ Vcc1
UNIT
V
V
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified Ta=25℃, Vcc1=12V, Vcc2=5V, BIAS=2.5V, RL=8Ω/10Ω/20Ω/45Ω)
PARAMETER
Voltage for mute ON
Voltage for mute OFF
Quiescent current
Actuator drivers
Maximum output voltage
Output offset voltage
Voltage gain
Sled motor driver
Maximum output voltage
Output offset voltage
Closed loop voltage gain
Spindle motor driver
Maximum output voltage
Output offset voltage
Voltage gain
Gain error by polarity
Tray motor driver
Output saturation voltage 1
PARAMETER
Output saturation voltage
between F&R
Output saturation voltage 2
SYMBOL
Vston
Vstoff
Icc
TEST CONDITIONS
@10Ω Load
Vomsl
Voofsl
Gvsl
@ 8Ω Load
Vomax
Voofld
Gvld
△Gvld
@ 8Ω Load
SYMBOL
△VSAT1
VSAT2
3.6
VIN=BIAS+0.2Vpp ac @1KHz
VIN=BIAS+0.2Vpp ac @1KHz
VIN=BIAS+0.2Vpp ac @1KHz
VIN=BIAS+0.2Vpp ac @1KHz
Upper+Lower saturation,
IL=200mA
TEST CONDITIONS
Output saturation voltage 1
between FWD and REV
Upper+Lower saturation,
IL=500mA
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
MAX
0.5
5
4.0
±50
Output adjustable gain on “H”
VVtrH
VCTL=2V
Side voltage
Tray motor driver input logic
High level input voltage
VIH
Low level input voltage
VIL
High level input current
IIH
VFWD=VREV=5V
Comparator
Input common-mode voltage
VCMC
range
Input offset voltage
Voofc
Saturation voltage
Vsc
Iosc ≤4mA
Voltage gain
Gvc
RL ≥15kΩ
Output sink current
Iosc
Vout <1.5V
* This device is not designed for protection against radioactive rays.
UTC
TYP
25
Vom
Voo
Gv
VSAT1
MIN
0
2.0
23.5
7.5
18
9.0
20
UNIT
V
V
mA
V
mV
dB
±100
22
V
mV
dB
V
mV
dB
dB
3.5
13.3
0
15.5
1
±50
17.5
2
0.7
1.1
1.5
V
MIN
TYP
MAX
UNIT
0.1
V
1.0
1.5
2.2
V
7.4
9.2
11
dB
180
Vcc
0.5
270
V
V
µA
1.5
-0.3
0
40
±1.0
250
200
8.0
Vcc1
±1.5
±2.0
400
CO., LTD.
V
mV
mV
V/mV
mA
3
QW-R109-021,B
UTC UA8868S
LINEAR INTEGRATED CIRCUIT
POWER DISSIPATION CURVE:
Pd (W)
2.0
1.5
1.0
25
50
75
100
125
150
Ta (℃)
*70mm×70mm×1.6mm glass epoxy board.
*Debating in done at 17.6mW/℃ for operating above Ta=25℃
OPERATING NOTES:
(1) The built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 175℃( typ.). The
hysteresis is set to 25℃(typ.), so the circuit will start up again when the chip temperature falling to 150℃ (typ.).
(2) In case mute pin voltage is under 0.5V or NC, output current is muted (except for tray motor driver). Mute pin voltage
should be more than 2.0V for normal application.
(3) when Vcc1 voltage drop to below 3.8V,shematice are muteed. The schematic will return to work when Vcc1 rise up
with a hysterisis of 03.V(typ.)
(4) Bias pin (pin 27) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (typ.),
the output current is muted.
(5) Insert the bypass capacitor (~ 0.1µF ) between Vcc pin and GND pin as close as possible.
(6) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the
external GND.
(7) Tray driver logic input:
FWD (pin6)
REV (pin7)
VOTR+ (pin10)
VOTR- (pin9)
Function
L
L
OPEN
OPEN
Open mode
L
H
L
H
Reverse mode
H
L
H
L
Forward mode
H
H
L
L
Brake mode
Input circuit of pin6 and pin7 is designed to avoid simultaneous activation of upper and lower output tr. ; however, in
order to improve reliability, apply motor forward/reverse input once through open mode.
We recommend time period for open longer than 10msec.
The voltage between “H” side Output voltage and “L” side output voltage is eaqual to three times (9.2dB Typ.) VTCL
voltage (pin21). And the “H” side and “L” side output voltage both eaqual to VCC/2 when in open mode and brake mode.
UTC
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
4
QW-R109-021,B
UTC UA8868S
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
U -C O M
SPIN +
Spindle
MUTE
FWD
REV
Tracking
Vcenter
Sled
Focus
SE R V O
Tray
voltage SER VO
control
SPIN -
28
27
26
25
24
23
22
21
19
20
Tracking coil
M
5V or 12V
18
17
16
15
11
12
13
14
U TC U A8868S
1
2
3
4
5
6
8
7
9
12V
S P IN +
UTC
S PIN -
M
M
Focus coil
S ER VO
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
10
CO., LTD.
5
QW-R109-021,B
UTC UA8868S
LINEAR INTEGRATED CIRCUIT
TESTING CIRCUIT
V20
V28 V27 V26 V25 V24 V23
V19
8
10
V
OPEN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
11
12
13
14
UTC UA8868S
1
2
3
4
V1
V2
V3
V4
5
6
7
8
V6
V7
V8
9
10
V
45
8
10
V5
U T C assum es no responsibility for equipm ent failures that result from using products at v alues that
ex ceed, ev en m om entarily, rated v alues (such as m ax im um ratings, operating condition ranges, or
other param eters) listed in products specifications of any and all U T C products described or contained
herein. U T C products are not designed for use in life support appliances, dev ices or system s where
m alfunction of these products can be reasonably ex pected to result in personal injury. R eproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. T he inform ation
presented in this docum ent does not form part of any quotation or contract, is believ ed to be accurate
and reliable and m ay be changed without notice.
UTC
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
6
QW-R109-021,B
Similar pages