UA8888S [UTC]
5-CHANNEL BTL DRIVER FOR DVD PLAYER; 5通道BTL驱动器DVD播放器
| 型号： | UA8888S |
| 厂家： | 
Unisonic Technologies |
| 描述： | 5-CHANNEL BTL DRIVER FOR DVD PLAYER |
| 文件： | 总8页 (文件大小：143K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
UA8888S
LINEAR INTEGRATED CIRCUIT
5-CHANNEL BTL DRIVER FOR
DVD PLAYER
ꢀ
DESCRIPTION
The UTC UA8888S is a 5-channel BTL driver IC for DVD player.
It is developed to driving the motors and actuators and consists of
two independent precision voltage regulators with adjustable range
from 1.5V~4V.
ꢀ
FEATURES
HSOP-28
* Voltage-type BTL drivers:
- two channels : actuators of tracking and focus
- two channels : sled and spindle motors.
- one channel : bi-direction DC motor driver for tray.
* Wide dynamic range:
9.0V (typ.) when VCC1= VCC2= 12V, at RL= 20Ω load.
4.0V (typ.) when VCC1=12V,VCC2=5V,at RL=15Ω load
* Separating power of VCC1 and VCC2 is to improve power
efficiency by a low supply voltage for tracking, focus, and spindle.
* Built-in level shift circuit and mute mode.
*Pb-free plating product number: UA8888SL
* Thermal shutdown protection.
* Differential inputs for signal addition are provided by input OPs.
The output structure for dual actuator driver is two power OP
Amps in bridge configuration, and one OP Amp for Sled Motor
Driver.
* Spindle driver is a single input linear BTL driver. The output
structure is two power OP Amps in bridge configuration.
* Tray in-out driver functions as a DC motor driver supports
forward/reverse control for tray motor.
* Built-in regulator controllers: Adjustable range 1.5V ~ 4V
ꢀ ORDERING INFORMATION
Ordering Number
Package
Packing
Normal
Lead Free Plating
UA8888SL-SH1-R
UA8888SL-SH1-T
UA8888S-SH1-R
UA8888S-SH1-T
HSOP-28
HSOP-28
Tape Reel
Tube
UA8888SL-SH1-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) SH1: HSOP-28
(3) L: Lead Free Plating, Blank: Pb/Sn
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Copyright © 2005 Unisonic Technologies Co., Ltd
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UA8888S
ꢀ PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
V
INFC
1
28
27
MUTE
BIAS
2
3
4
TRB_1
26
25
24
23
22
VINTK
REGO 2
V
INSL+
TRB_2
NC
5
6
7
REGO 1
FWD
V
INLD
GND
REV
UA8888S
8
Vcc1
VCTL
21
V
OTR-
9
20 NC
10
V
V
OTR+
Vcc2
19
18
OSL+ 11
V
V
V
V
OLD-
12
13
14
V
V
OSL-
OFC-
OLD+
17
16
15
OTK-
OTK+
V
OFC+
ꢀ PIN DESCRIPTION
PIN NO.
1
PIN NAME
VINFC
FUNCTION
Input for focus driver
Connect to external transistor base
2
TRB_1
REGO2
VINSL+
3
Regulator voltage output, connect to external transistor collector
Input for the sled driver
4
5
REGO1
FWD
Regulator voltage output, connect to external transistor collector
Tray driver forward input
6
7
REV
Tray driver reverse input
8
VCC
1
Vcc for pre-drive block and power block of sled and tray
Tray driver output (-)
9
VOTR-
VOTR+
VOSL+
VOSL-
VOFC-
VOFC+
VOTK+
VOTK-
VOLD+
VOLD-
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Tray driver output (+)
Sled driver output (+)
Sled driver output (-)
Focus driver output (-)
Focus driver output (+)
Tracking driver output (+)
Tracking driver output (-)
Spindle driver output (+)
Spindle driver output (-)
VCC2
Vcc for power block of spindle, tracking and focus
No Connection
NC
VCTL
Speed control input of tray driver
Ground
GND
VINLD
NC
Input for spindle driver
No Connection
TRB_2
VINTK
BIAS
MUTE
Connect to external transistor base
Input for tracking driver
Input for reference voltage
Input for mute control
Notes: Symbol of + and – (output of drivers) means polarity to input pin. (Ex. if voltage of pin1 is high, pin14 is high.)
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UA8888S
LINEAR INTEGRATED CIRCUIT
ꢀ BLOCK DIAGRAM
MUTE BIAS VINTK TRB_2
NC
24
VINLD GND
NC
20
VCTL
21
VCC2
19
VOLD- VOLD+ VOTK- VOTK+
18 15
28
27
25
26
23
22
17
16
GND
PGND
VCC2
MUTE and
Thermal
Shut down
60K
90K
-
60K
Actuator
Spindle
+
+
Driver(4x)
Driver(4X)
225K
1.25V
V
CC
CC
2
2
V
VCC1
60K
1.25V
225K
-
+
Sled
Driver(4X)
Actuator
Driver(4x)
150K
+
Pre-DRV
TRAY
DRIVER
60K
VCC1
PGND
2
3
4
5
9
10
11
12
13
14
1
6
7
8
VINFC TRB_1 REGO2 VINSL+ REGO1 FWD
REV
VCC1 VOTR- VOTR+ VOSL+ VOSL- VOFC- VOFC+
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UA8888S
LINEAR INTEGRATED CIRCUIT
ꢀ
ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
PARAMETER
SYMBOL
VCC
RATINGS
15
UNIT
V
Supply Voltage
Power Dissipation (Note)
Derating Rate Ta>25℃
1.7
13.6
W
mW /℃
PD
℃
℃
Operate Temperature
Storage Temperature
TOPR
TSTG
-35 ~ +85
-55 ~ +150
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ꢀ
GUARANTEED OPERATING CONDITIONS (Ta=25℃)
PARAMETER SYMBOL
VCC
CC2
RATINGS
4.5~13.2
UNIT
V
1
Power Supply Voltage
V
4.5~VCC
1
V
ꢀ
ELECTRICAL CHARACTERISTICS
(Ta=25℃, VCC1=12V, VCC2=5V, Bias=2.5V, RL=8Ω/10Ω/20Ω/45Ω, unless otherwise specified.)
PARAMETER
SYMBOL
VSTON
VSTOFF
IQ
TEST CONDITIONS
MIN TYP MAX UNIT
ON
0
0.5
5
V
V
Voltage for Mute
OFF
2.0
Quiescent Current
25
mA
Actuator Drivers
Output Offset Voltage
Maximum Output Voltage
Voltage Gain
VO(OFF)
±50
mV
V
VO(MAX) @10Ω Load
3.6
4.0
GV
VIN=Bias+0.2Vpp ac @1KHz
23.5
dB
Sled Motor Driver
Output Offset Voltage
Maximum Output Voltage
Closed Loop Voltage Gain
Spindle Motor Driver
Output Offset Voltage
Maximum Output Voltage
Voltage Gain
VO(OFF)
±100
22
mV
V
VO(MAX) @20Ω Load
GV(CL) VIN=Bias+0.2Vpp ac @1KHz
7.5
18
9.0
20
dB
VO(OFF)
±50
mV
V
VO(MAX) @8Ω Load
3.5
GV
VIN=Bias+0.2Vpp ac @1KHz
VIN=Bias+0.2Vpp ac @1KHz
13.3 15.5 17.5
dB
dB
Gain Error by Polarity
Tray Motor Driver
△GV
0
1
2
Upper + Lower saturation
IL=200mA
VO(SAT1)
VO(SAT2)
0.7
1.0
1.1
1.5
2.2
0.1
11
V
V
Output Saturation Voltage
Upper + Lower saturation
IL=500mA
1.55
Output saturation voltage 1
between FWD and REV
Output Saturation Voltage Between F&R △VO(SAT1)
V
Output Adjustable Gain on “H” Side
Voltage
GV(ADJ) VCTL=2V
7.4
9.2
dB
Tray Motor Driver Input Logic
High
Low
VI(H)
VI(L)
II(H)
1.5
Vcc
0.5
V
V
Level Input Voltage
-0.3
High Level Input Current
Regulator (Note 2)
VFWD=VREV=5V
180
270
µA
Output Voltage
VOUT
IL = 500mA(Note 3)
1.5
-50
-25
4.0
50
25
V
Output Load Differential
Power supply Voltage Differential
△VO(DIFF) IL = 0 ~ 500mA
0
0
mV
mV
△VVCC (VCC=4.5~8V), IL = 500mA
Note: 1.This device is not designed for protection against radioactive rays.
2. Based on 8550C PNP application.
3. Based on 8550D.
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UA8888S
LINEAR INTEGRATED CIRCUIT
ꢀ
TYPICAL APPLICATION CIRCUIT
SERVO
U-COM
5v or 12V
5V
Tray
voltage
control
10μF
Tracking coil
M
NC
NC
24
28
27
26
25
23
22
21
20
19
18
17
16
15
UTC UA8888S
2
9
1
3
4
5
6
7
8
10
11
12
13
14
10K
10K
M
M
12V
Focus coil
47μF
5V
10K
ADJ 2.5V
REGOUT
10
μF
ADJ 3.3V
REGOUT
47μF
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UA8888S
ꢀ OPERATION NOTES
LINEAR INTEGRATED CIRCUIT
(1) The thermal shutdown function will be triggered while the chip junction temperature reach 150℃ typical, and
then the output current is muted. The hysteresis is set to 25℃ typical, so the circuit will start up again when the
chip temperature falling to 125℃ typical.
(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) Pin 27(Bias pin) 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.
(4) Insert the bypass capacitor (~0.1µF) between VCC pin and GND pin as close as possible.
(5) Ground-plane wiring up to GND is performed and should tightly connect to external GND.
(6) Pin 20 and 24 should be floated due to reserve for internal test only.
(7) When Vcc1 voltage drop to below 3.8V, schematic is muted. The schematic will return to work when Vcc1 rise
up with a hysterisis of 0.3V(typ.)
(8) Tray driver logic input:
FWD (pin6)
REV (pin7)
VOTR+ (pin10)
VOTR- (pin9)
Function
L
L
L
H
L
OPEN
OPEN
Open mode
Reverse mode
Forward mode
Brake mode
L
H
L
H
L
L
H
H
H
Pin 6 and Pin 7 are designed to avoid simultaneous activation of upper and lower output transistors, 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 and “L” side output voltage is equal to three times(9.2dB Typ.) VTCL voltage(Pin21).
And the “H” side and “L” side output voltage both equal to VCC/2 when in open mode and brake mode.
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UA8888S
LINEAR INTEGRATED CIRCUIT
ꢀ
TESTING CIRCUIT
5V
V23
10
μF
8
10
V28
V27
27
V26
V19
18
19
NC
20
NC
24
OPEN
21
25
28
26
23
17
16
15
22
UTC UA8888S
1
2
4
5
6
7
8
9
11
12
13
14
3
10
V4
V6
V7
V8
V1
10K
10K
45
20
10
47μF
10K
16.4K
ADJ 2.5V
REGOUT
5V
10
μF
ADJ 3.3V
REGOUT
47μF
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UA8888S
LINEAR INTEGRATED CIRCUIT
ꢀ
POWER DISSIPATION CURVE
2.0
1.7
1.5
1.0
0
100
25
50
75
Ta (℃)
125
150
* 70mm×70mm×1.6mm glass epoxy board.
* Reduced by 13.6mW /℃ for operating in above 25℃.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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