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Ordering number: ENN5838A
Monolithic Digital IC
LB8118M
Actuator Driver for Portable CD Players
Overview
The LB8118M is an actuator driver IC designed for portable CD players that operate at 2.4 V (two Ni-Cd batteries) or 3.0 V (two dry cells). Because the fourchannel driver control outputs are divided into two groups, this device reduces power dissipation considerably during double-speed play.
Package Dimensions
unit: mm 3148-QIP44MA
[LB8118M]
13.2 10.0 1.0 0.8 0.35
33 34 23 22
1.6 1.0 0.2
1.6 13.2 10.0 0.8 1.0
1.0
44
1
11
2.8max
12
0.1 2.5
11.6
0.8
SANYO: QIP44MA
Functions and Features
* H bridge drivers on chip for four channels to drive each CD actuator (the focus coil, the tracking coil, the spindle motor, and the sled motor). * Step-up circuit (voltage to be set by an external resistor) on chip that is used to apply voltage to the CD DSP, ASP and microcontroller. Center-tap coil for step-up circuit makes it possible to supply the driver control voltage. (However, the drive Tr, L, C, and Di are all external.) * Oscillator circuits for each converter on chip. (C is external.) * Four-channel driver control output is divided into two groups (the focus/tracking group and the spindle/sled group) for minimum loss at double-speed playback. Highest operating voltage detected in each group is supplied for each 2ch H bridge driver after PMW conversion. The single channel PWM drive without dividing the outputs into two groups is also possible. (However, the PWM PNP-Tr, NPN-Tr, L, C, and Di are all external.) * The dynamic range of 4-channel H bridge driver output voltage is up to 2 V on the focus and tracking side, and can be set by the VoSET pin on the spindle and sled side. However, if the 4-channel H bridge voltages in the H bridge driver block are the same, the maximum voltage is determined using the VoSET pin. * Sled motor driving mode is switchable between step drive mode for lower power dissipation, and normal V-type drive mode. (The other three channels are fixed to V-type.) * In the spindle motor drive circuit, the control gain can be set higher for double-speed playback. Continued on next page.
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
10903AS (II)/D3097HA (II) No.5838-1/11
LB8118M Continued from preceding page. * PWM step-down circuit for external power operates when external power (4 V or higher) is supplied. In this function, external power is converted to VCC power supply, and two type voltage setting is possible. In playback mode, step-up voltage for DSP has to be set equal to or lower than VCC, but in charging the battery, it has to be set higher enough than VCC. So step-down voltage (VCC) setting of two types is possible with two pairs of external resistor. (Switching port is provided.) (However, the PWM PNP-Tr, NPN-Tr, L, C, and Di are all external.) * APC step-up power supply for the laser diode. (Also supports a pre-power supply for the internal bias.) The laser diode is controlled with a voltage of roughly 0.5 V. * Battery pulse charging function on chip. (However, the drive NPN-Tr, and the current feedback C and R are external.) * Battery check comparator on chip. * The system can be started up and stopped by outputs from the microcontroller. * Actuator muting function on chip (for all four channels simultaneously). * Thermal shutdown circuit on chip.
Specifications
Absolute Maximum Ratings at Ta = 25 C
Parameter Maximum supply voltage VCD pin input voltage H bridge output current Allowable power dissipation Operating temperature Storage temperature Symbol VCCmax VCDmax IOUTmax Pd max Topr Tstg Conditions Ratings 7 10 800 700 -20 to +75 -55 to +150 Unit V V mA mW C C
Maximum per channel is 400 mA. Independent IC
Allowable Operating Ranges at Ta = 25 C
Parameter Supply voltage VCD pin input voltage VCC drop setting voltage when external voltage input is applied H Bridge limiter voltage Symbol VCC VCD VCC(EXT) VH LIM Conditions Ratings 1.6 to 5.0 3.6 to 9.0 3 to 5 0.15 to 2.25 Unit V V V V
Electrical Characteristics at Ta = 25 C, VCC = 3 V, VCD = 4 V
Parameter [Power Supply Block] Standby current drain VCC quiescent current drain VCD quiescent current drain [ASP step-up circuit] ASP drive output current VASP pin input bias current ASPBASE pin saturation voltage Load regulation Line regulation Minimum off duty [APC step-up circuit] APC drive output current VAPC pin input bias current VAPC - VLD voltage Load regulation Line regulation Minimum off duty Symbol ICCO ICC ICD IO ASPDRV IB VASP VO ASPBASE RLD ASP RLN ASP DMIN ASP IO APCDRV IB VAPC VAPC - LD RLD APC RLN APC DMIN APC IO = 1 mA VASP = 3.4 V, L = 30 H, C = 220 F VASP = 3.4 V, L = 30 H, C = 220 F 50 0.37 0.35 VAPC = 3.4 V, L = 30 H, C = 220 F VAPC = 3.4 V, L = 30 H, C = 220 F 50 0.50 0.50 Conditions S/S = H, the total of VCC and VCD S/S = L, VCC line only S/S = L, with no driver input 2.1 min typ max 100 15 5.0 2.9 200 0.2 Unit A mA mA mA nA V
11 3.5 2.5
0.1
1000 mV/A 100 mV/V % 0.63 mA 200 nA 0.65 V 1000 mV/A 100 mV/V %
Continued on next page.
No.5838-2/11
LB8118M Continued from preceding page.
Parameter Symbol [H Bridge Output Block, PWM Block] Output saturation voltage VH sat Maximum output voltage VPWM max PWM applied offset voltage VPWMOFF DNB-1,2 pins output voltage IO DNB1,2 Load regulation RLD PWM Line regulation RLN PWM [Drive Control Block] CH1 to 4 input voltage range VIN1-4 Input bias current IBIN ASPREF input voltage range VASPR CH1,2,4 transfer gain G124IN CH3 L side transfer gain G3LIN Negative/positive transfer gain difference Input dead zone voltage range [SLED Drive Circuit] SLREF pin input voltage range SLREF pin input bias current Positive side setting offset voltage between IN4 and SLREF Dual side step width difference voltage SL MODE pin high voltage SL MODE pin low voltage [OSC Block] Maximum oscillation frequency Source current [S/S Pin Function] S/S start voltage S/S off voltage [External Voltage Input Block] Minimum operating input voltage when external voltage input is applied EXTDRV pin output current VZ pin voltage VZ pin inflow current VEXT, VEXT-CHG pin Input bias current EXTBASE pin saturation voltage [Muting Block] Mute on voltage Mute off voltage [Pulse Charging Function] Internal reference voltage CHG-ON pin ON voltage CHG-ON pin OFF voltage CHG-MON pin input bias current CHGDRV pin output current G IN VDZ Conditions IO = 200 mA, TOP + BOTTOM VOUT 1 Each VIN = VASPREF VOUT = 2.25 V, L = 30 H VOUT = 2.25 V, L = 30 H 0.5 Each VIN = VASPREF Each VIN = VASPREF RL = 10 RL = 10 RL = 10 RL = 10 1.2 6.8 8.5 -1 0 VCD VCD 8.0 10.0 0 min typ 0.30 1.95 0.17 VOUT/60 max 0.45 2.25 0.22 Unit
0.14
V V V mA 1000 mV/A 100 mV/V -0.5 2 -1.3 9.2 11.5 +1 30 V A V dB dB dB mV
VSLREF IB SLREF Voff SLREF VSLREF = 2.3 V, VASPREF = 2 V
VASPREF+0.1
VCD
-1.0 200
V nA mV
-20
+20
VSLDIF VH SL MODE VL SL MODE FOSC max IS OSC VSS ON VSS OFF
VSLREF = 2.3 V, VASPREF = 2 V
-20 2 -25
+25
mV V V kHz A V V
+1 100
VOSC = 0.0 V
46 VCC 0.5 -1.0
VEXT min IO EXT DRV VZ IVZ IB EXTCHG IB EXT VEXTBASE
RIN = 1 k
3.8 160 200 2.6 240 2.8 20 200
V A V mA nA V
VEXT = 4.5 V, RIN = 1 k
IO = 1 mA
0.2
VON MUTE VOFF MUTE VCHGREF VCHG-ON VCHG-OFF IB CHGMON IO CHGDRV
1 2 0.32 2 0.35 0.38 1 200 2.4 3.0 3.6
V V V V V nA mA
Continued on next page.
No.5838-3/11
LB8118M Continued from preceding page.
Parameter Symbol [H Bridge 1-channel/2-channel drive switch] 1-channel/2-channel switching, 2-channel on voltage 1-channel/2-channel switching, 1-channel on voltage [TSD Block] Operating temperature Temperature hysteresis width [Battery Check Block] Input bias current Output saturation voltage Battery detection voltage V 1ch/2ch V 1ch/2ch 2 Conditions min typ max Unit
1
V V
TTSD TTSD IBIN VBO Vdet
Design target value, Note 1 Design target value, Note 1
180 20 200 0.3 0.7
C C nA V V
IO = 100 A
Note 1: For parameters which have an entry of ``design target value'' in the ``Conditions'' column, no measurements are made.
Pd max - Ta
1.0
Allowable power dissipation, Pd max - W
0.8 0.7 0.6
420mW 0.4
0.2
0 -20
0
20
40
60
80
100
Ambient temperature, Ta - C
ASPREF
VOUT2
SLREF
Pin Assignment
IN4
33 SL MODE 34 OUT4- 35 OUT4+ 36 OUT3- 37 OUT3+ 38 PGND 39 OUT2- 40 OUT2+ 41 OUT1- 42 OUT1+ 43 1ch/2ch 44 1
IN1
32
31
30
29
28
27
26
25
24
23 22 BI 21 BO 20 VZ 19 UP BASE 18 VASP
LB8118M
APC DRV
VAPC
Mute
VCC
VLD
S/S
IN3
17 ASP DRV 16 VO SET 15 DNB-2 14 DNB-1 13 CHG-ON 12 EXT BASE
2
IN2
3
VOUT1
4
VCD
5
CHGDRV
6
CHGMON
7
GND
8
OSC
9
EXT DRV
10
VEXT
11
VEXT-CHG
Top view
A09979
No.5838-4/11
LB8118M Pin Functions
Pin No. 1, 2 32, 33 Symbol IN1, IN2 IN3, IN4 Equivalent circuit
VCD VCD
IN1~4
200 13k
200
ASPREF
30
ASPREF
50A 50A
Function Actuator control signals for each driver: IN1: Focus, IN2: Tracking, IN3: Spindle, IN4: Sled. These signals are input from the ASP (DSP). Control reference signal input pin for each driver. This signal is input from the ASP (DSP).
A09980
43, 42 41, 40 38, 37 36, 35
OUT1+, 1- OUT2+, 2- OUT3+, 3- OUT4+, 4-
VCD
OUT1/2
VCD
VCC
VCC
3 31
VOUT1 VOUT2
OUT+
OUT-
PGND
A09981
4
VCD
5
CHGDRV
9
EXTDRV
Constant-current value of each
14
DNB-1
VCC CHGDRV EXTDRV ASPDRV APCDRV CHGDRV EXTDRV ASPDRV APCDRV 3mA 200 A 1mA 0.5mA
VCC
DNB-1 DNB-2
Focus coil actuator drive output pins. Tracking coil actuator drive output pins. Spindle motor drive output pins. Sled motor drive output pins. (Each channel includes built-in spark killer diodes.) Power supply pins for the H bridge driver. VOUT1 is for the focus/tracking group and VOUT2 is for the spindle/sled group. Maximum value + (: saturation voltage of upper/lower output Tr) of each 2-channel control output is set by external PWM step-down circuit. Power supply for the actuator driver controller, maximum value circuit for PWM, and sled controller. Base drive output pin for the external NPN-Tr for the battery pulse charging circuit. Base drive output pin for the external step-down NPN-Tr used when external voltage input is applied. Base drive output pin for the PNP-Tr for the step-down PWM that generates the power supply for the H bridge driver that drives the focus/tracking group actuators. (Open when there is one H bridge power supply.) Base drive output pin for the PNP-Tr for the step-down PWM that generates the power supply for the H bridge driver that drives the spindle/sled group actuators. (DNB-2 becomes the drive pin when there is one H bridge power supply.) Base drive output pin for the external NPN-Tr for the step-up circuit that sets the external voltage for the DSP. Base drive output pin for external NPNTr for the laser diode APC power supply.
15
DNB-2
Constant-current circuit which changes with the input of CH1 through 4. (3 mA max)
A09982
17
ASPDRV
24
APCDRV
Continued on next page.
No.5838-5/11
LB8118M Continued from preceding page.
Pin No. 6 Symbol CHG MON Equivalent circuit
VCC 15A 15A VCC VCC EXTBASE
0.35V
200
CHG-MON
12
EXTBASE
1k 100k 15A
50 A
60A
50k
A09983
7 8
GND OSC
VCC OSC VCC
Function Constant-current feedback input pin for the charging circuit. Thecharging current is determined by comparing this input voltage and the internal reference voltage (0.35 V typ.). Connection pin for the resistor that is used to set the voltage for the external step-down circuit. This prevents invalid current at no power supply. LB8118M GND pin for small-signal block. (GND except output power Tr) Input pin for the free-running oscillation circuit that is used to operate the PWM step-down circuit and step-up circuit. The oscillating frequency is determined by external capacitors.
42A
A09984
10
VEXT
VCC
VCC 200 VEXT 50A 1k 1.2V 200 50 A VEXT-CHG
Voltage feedback input pin for the external power supply step-down circuit. Vcc for playback is set by comparing this pin voltage with the internal reference voltage (1.28 V typ.). Voltage feedback input pin for the external power supply step-down circuit. Vcc for charging is set by comparing this pin voltage with the internal reference voltage (1.28 V typ.).
11
VEXTCHG
10k 10A 50 A 50k
50k
A09985
18
VASP
VCC VCC VCC UPBASE
19
UPBASE
VASP
200 50A 100k 1k 10A 1.2V
A09986
50A
50k
Voltage feedback input pin for the stepup circuit. The step-up voltage is determined by comparing this pin voltage with the internal reference voltage (1.28 V typ.). Connection pin for the resistor that is used to set the voltage of the step-up circuit. This prevents invalid current in standby mode.
Continued on next page.
No.5838-6/11
LB8118M Continued from preceding page.
Pin No. 20 Symbol VZ Equivalent circuit
VZ
Reference voltage startup circuit External power input Forced startup
100 k S/S
1.2V VREF 1.3k
A09987
Function Input pin for start-up circuit when an external voltage input is applied. The external voltage input is applied through a resistor inserted in series. The voltage is basically determined 1.2 V + 2VBE; this pin has a current draining capacity up to 20 mA. LB8118M start-up input. (Start on a low-level input.) Laser diode voltage detection pin. The VLD voltage +0.5 V is VAPC.
27 23
S/S VLD
VLD
VAPC
24
VAPC
50A
Voltage feedback input pin for the APC step-up voltage circuit. The step-up power supply voltage is determined by comparing this input voltage with VLD.
A09988
16
VOSET
VCD
To next block
H bridge power supply limiter voltage pin for the VOUT2 side. The voltage is limited at approximately 190% of the VOSET voltage. The setting is made by a dividing resistor.
VCC
3.6k
Voset
A09989
13
CHG-ON
VCD
VCD
VCC
20A
20A
28
MUTE
60k MUTE CHG-ON
VCC
20A
60k
44
1ch/2ch
SLMODE 80k
80k
A09990
34
SLMODE
Pin for selecting battery charging when external voltage input is applied. This pin is used to determine the drop voltage for the external voltage input. When low, the drop voltage set by VEXT is selected; when high, the drop voltage set by VEXT-CHG is selected. Input pin for simultaneously muting the four-channel drivers. Mute when turning the power on. (Low level: mute) This pin is used to switch the H bridge power supply between two-channel simultaneous operation and onechannel operation. (Two-channel operation is selected when this pin is low.) Pin for switching the sled driver between V-type control and step control. (High: V-type control; low: step control)
Continued on next page.
No.5838-7/11
LB8118M Continued from preceding page.
Pin No. 26 29 33 Symbol VCC SLREF IN4
VCD
Equivalent circuit
VCD
200 SLREF
IN4 200
50k
50k 20A 60A 20A 60A
Function Power supply voltage pin. Threshold input pin for driving the sled motor stepwise. Both the positive and negative step levels (with positivenegative symmetry) are determined by thevoltage differential between the pin voltage and the ASPREF pin voltage. (See Supplementary Explanation.)
A09991
39
PGND
21
BO VCC 50A VCC 100A
Output Tr. GND for the four-channel H bridge drivers. This pin is not internally connected to the small-signal system GND. Battery check comparator output. Internal output current is 100 A.
BO
GND
A09992
22
BI
VCC 50A
VCC
VCC 50A
Battery check comparator input. Input bias current is 200 nA or less.
0.7V
GND BI
A09993
No.5838-8/11
LB8118M LB8118M Block Diagram
OUT1+ M OUT1- OUT2+ M OUT2- OUT4+ M OUT4- OUT3+ M OU31- VOUT1 VOUT2
H Focus
GND MUTE
Bidirectional drive
H Tracking
H SLED
H Spindle
PGND
Bidirectional drive
Bidirectional drive
Bidirectional drive
IN1
-
Error amplifier
+
Clamp + Offset
Maximum value
- - + +
PWM
DB1 VCC
1ch/2ch switch
IN2
- +
Clamp + Offset
IN3
- +
Maximum value
BI
+
Error amplifier
- -
IN4
- +
PWM
0.7V
-
BO
DB2
Inverted output
+
To microcontroller
+ +
ASP REF SL REF
+ -
-
R1
+ -
OR
Clamp + Offset
-
Sawtooth waveform oscillation circuit
OSC
APC (3.3 V) UP CONVERTER
R1
+
+ -
Error amplifier
VASP PWM UPBASE ASP DRV VCD
DC/DC Converter
2.4V
ASP REF SL MODE Vo SET S/S 1ch/2ch BATT 1.2V
Error amplifier
+ -
+
1.2V
- +
Start up
1.2V
TSD
Dead time
See Sample Application
2.6V
APC (2.5 V) UP CONVERTER Judge ext. power Forced startup
VAPC
2.7V
PWM
VREF
VZ
External power
- +
APC Drive
-
APC DRV 0.5V VLD 1.2V
Error amplifier
- -
1.2V
Error amplifier
+ - - +
PWM
EXTDRN
PWM
Dead time
LD
+ +
VCC VEXT-CHG
SW
EXTBASE VEXT
Dead time
CHG MON
CHG DRV CHG-ON
A09995
No.5838-9/11
LB8118M LB8118M Sample Application Circuit
1mF (Ceramic)
2.0 to 3.0V 22 to 100H
2SB1302
2.6V (50 to 130mA) 13k +
3.3k
LB8118M
1500pF 910 12k 2SD879 ASP DRV 5.6k
220F
-
UPBASE VASP
2SD879 Low saturation Tr 2SB1302 Low saturation type (for SW) Coil manufactured by Toko: D73LF (817FY-220M to 101M)
0.47F
A09996
Figure 1 DC 2.6 V Up/down Sample Application 1
VIN 2.0 to 3.0V
DC3.5V 22 to 47H
6.8k VCD 47F
LB8118M
APC DRV VLD VAPC
51k
Coil: Manufactured by Toko D73LF (817FY-220M to 47M) NPN Tr: 2SD1012
To 2.6V VDD
A09997
Figure 2 DC 3.5 V Sample Application (when laser power supply is VDD)
No.5838-10/11
LB8118M Supplementary Explanation 1. VCD supply The VCD line is the power supply for the driver control blocks of channels 1 to 4. The VCD line can be supplied from the DSP or ASP step-up circuit by using a coil with center tap. However, because the allowable operating range for VCD is 3.6 V to 9.0 V, it is recommended that in order to reduce power dissipation, the voltage should be set to the lower range. (Even if this power supply does not affect the control performance such as the transfer gain.) 2. Sled step drive Stepping control in this IC for the sled actuator is as described below. Normal V-type control is selected if the SLMODE pin is set high, but by setting this pin low, step drive mode with low power dissipation can be selected. (This only affects channel 4.) The step drive starting level is input from the SLREF pin (must be higher than ASPREF), and the positive side step start is determined by comparing the input voltage with IN4. For the negative side, the step start is determined automatically by setting the differential voltage between the SLREF and the ASPREF on the opposite side, and then comparing that voltage to IN4. In other words, the control characteristics become as defined by the solid line in the diagram below. (The rise on the positive and negative steps has no hysteresis.)
+
Voltage between outputs
SLREF-ASPREF - 0 + VIN4-ASPREF
SLREF (greater than ASPREF) If this voltage is set, the negative side step start is determined automatically by setting the differential voltage between SLREF and ASPREF on the opposite side as well.
-
A09994
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of January, 2003. Specifications and information herein are subject to change without notice.
PS No. 5838-11/11

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