Datasheet

UTC UA8868
LINEAR INTEGRATED CIRCUIT
5-CHANNEL BTL DRIVER FOR DVD PLAYER
DESCRIPTION
The UTC UA8868 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: UA8868L
BLOCK DIAGRAM
28
27
26
25
24
23
22
21
+
60K
Stand by
20
19
17
16
15
Vcc2
90K
60K
Spindle
Driver
+
-
+ -
18
PGND
GND
Actuator
Driver (4x)
150K
Thermal
Shut down
Vcc2
Vcc2
+
150K
-
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
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Actuator
Driver (4x)
11
12
13
14
CO., LTD.
1
QW-R109-020,B
UTC UA8868
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+
OPAMP 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
VOSLSled driver output (-)
12
VOSL+
Sled 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 (-)
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
13.5
V
*1.7
-20 ~ +85
**-40 ~ +150
w
℃
℃
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
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QW-R109-020,B
UTC UA8868
LINEAR INTEGRATED CIRCUIT
GUARANTEED OPERATING CONDITIONS
(Ta=25℃)
PARAMETER
Power Supply Voltage
SYMBOL
Vcc1
Vcc2
RATINGS
4.3 ~ 13.2
4.3 ~ Vcc1
UNIT
V
V
ELECTRICAL CHARACTERISTICS
(Ta=25℃, VCC1=12V, VCC2=5V, BIAS=2.5V, RL=8Ω/10Ω/45Ω)
PARAMETER
Quiescent Current
Voltage For Mute ON
Voltage For Mute OFF
Actuator Drivers
Output Offset Voltage
Maximum Output Voltage
Voltage Gain
Sled Motor Driver
Output Offset Voltage
Maximum Output Voltage
Closed Loop Voltage Gain
Spindle Motor Driver
Output Offset Voltage
Maximum Output Voltage
Voltage Gain
Gain Error By Polarity
Tray Motor Driver
Output Saturation Voltage 1
Output Saturation Voltage Between F&R
SYMBOL
Icc
Vston
Vstoff
TEST CONDITONS
Voo
Vom
Gv
@10Ω Load
VIN=BIAS+0.2Vpp ac @1KHz
3.6
4.0
20
Voofsl
Vomsl
Gvsl
@ 8Ω Load
VIN=BIAS+0.2Vpp ac @1KH
7.5
18
9.0
20
Voofld
Vomax
Gvld
ΔGvld
@ 8Ω Load
VIN=BIAS+0.2Vpp ac @1KHz
VIN=BIAS+0.2Vpp ac @1KHz
3.6 4.0
13.3 15.5
0
1
VSAT1
ΔVSAT1
0.5
5
±50
mV
V
dB
±100
mV
V
dB
22
1.1
UNIT
mA
V
V
17.5
2
mV
V
dB
dB
1.5
V
0.1
V
Upper+Lower saturation,IL=200mA
0.7
Output saturation voltage 1 between
FWD and REV
Upper+Lower saturation,IL=500mA
1.0
1.55
2.2
V
7.4
9.2
11
dB
180
VCC
0.5
270
V
V
μA
±2.0
VCC1±1.5
mV
V
V/mV
mA
mV
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
MAX
±50
Output Saturation Voltage 2
VSAT2
Output Adjustable Gain On “H” Side
VVtrH
“H” Side output for input (VTCL)
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 Offset Voltage
Voofc
Input Common-mode Voltage Range
VCMC
RL≧15kΩ
Voltage Gain
Gvc
Output Sink Current
Iosc
Vout <1.5V
Iosc ≦4mA
Saturation Voltage
Vsc
* This device is not designed for protection against radioactive rays.
UTC
MIN TYP
30
0
2.0
1.5
-0.3
0
50
6.0
400
CO., LTD.
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QW-R109-020,B
UTC UA8868
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 will shutdown the output current when the chip junction temperature reaches 150
℃ (typ.).The hysteresis is set to 25℃ (typ.), so the circuit will restart up if the chip temperature falled down below 125℃
(typ.)
(2) If mute pin is setted to under 0.5V or NC, output current is off (except for spindle driver). Mute pin voltage should be
higher than 2.0V for normal application.
(3) Bias pin (pin 27) should be set to more than 1.2V for proper working. If the bias pin voltage is fall below 0.9V (typ.),
the output current will be muted.
(4) Insert the bypass capacitor (~ 0.1μF ) between Vcc pin and GND pin as close as possible.
(5) when Vcc1 voltage drop to below 3.8V, functions are muted. The function will return to work when Vcc1 increase to
over a hysterisis of 03.V (typ.)
(6) Heat dissipation fins are connected to the GND of the chip. Make sure to connect them to power supply GND.
Tray driver logic input:
FWD (pin6)
REV (pin7)
VOL+ (pin10)
VOL- (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 transistors.;
however, in order to improve reliability, apply motor forward/reverse input once each input with time interval be longer
than 10msec.
“H” Side output voltage (VOL+, VOL-) varies depending on output control terminal for tray (pin21),which is set about three
times of VTCL(pin21) (9.2dB Typ.). And, “L” Side output voltage is equal to output saturation voltage for working mode.
. And the “H” side and “L” side output voltage are both eaqual to VCC/2 when in open mode and brake mode.
UTC
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
4
QW-R109-020,B
UTC UA8868
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
UTC
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
5
QW-R109-020,B
UTC UA8868
LINEAR INTEGRATED CIRCUIT
TESTING CIRCUIT
V20
V28 V27 V26 V25 V24 V23
8
V19
10
V
OPEN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
9
10
11
12
13
14
UTC UA8868
1
2
3
4
5
6
7
8
V6
V7
V8
V
V1
V2
V3
V4
45
8
10
V5
U T C a ssu m e s n o re s p o n sib ility f o r e q u ip m e n t f a ilu re s th a t re su lt f ro m u sin g p ro d u c ts a t v a lu e s th a t
e x c e e d , e v e n m o m e n ta rily , ra te d v a lu e s (s u c h a s m a x im u m ra tin g s, o p e ra tin g c o n d itio n ra n g e s, o r
o th e r p a ra m e te rs) liste d in p ro d u c ts sp e c if ic a tio n s o f a n y a n d a ll U T C p ro d u c ts d e sc rib e d o r c o n ta in e d
h e re in . U T C p ro d u c ts a re n o t d e sig n e d f o r u s e in lif e su p p o rt a p p lia n c e s , d e v ic e s o r s y ste m s w h e re
m a lf u n c tio n o f th e s e p ro d u c ts c a n b e re a so n a b ly e x p e c te d to re su lt in p e rso n a l in ju ry . R e p ro d u c tio n in
w h o le o r in p a rt is p ro h ib ite d w ith o u t th e p rio r w ritte n c o n se n t o f th e c o p y rig h t o w n e r. T h e in f o rm a tio n
p re s e n te d in th is d o c u m e n t d o e s n o t f o rm p a rt o f a n y q u o ta tio n o r c o n tra c t, is b e lie v e d to b e a c c u ra te
a n d re lia b le a n d m a y b e c h a n g e d w ith o u t n o tic e .
UTC
UNISONIC TECHNOLOGIES
www.unisonic.com.tw
CO., LTD.
6
QW-R109-020,B
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