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Ordering number: ENN5233A
LB8109M
Monolithic Digital IC
LB8109M Actuator Driver for Portable CD Players
Overview
The LB8109M 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). * Battery pulse charging function on chip. (However, the drive NPNTr, and the current feedback C and R are external.) * Having one 358-type OP amplifier on chip, it is suitable for a variety of applications. (Power supply: VCD ) * 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.
Functions and Features
* H bridge drivers (output dynamic range maximum is about 2 V) 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 and R are 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 play. Higher operating voltage in each group is converted to power supply of each 2ch H bridge driver by PMW conversion. (However, the PWM PNP-Tr, NPN-Tr, L, C, and Di are all external.) * 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 doubled for double-speed play. (Switching port provided.) * PWM step-down circuit for external power operates when external power (8 V or more) is supplied. In this function, external power is converted to VCC power supply, and two type voltage setting is possible. In play mode, step-up voltage for DSP has to be set lower than VCC , but in charging the battery, it has to be set higher 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.)
Package Dimensions
unit : mm
3148-QFP44MA
[LB8109M]
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
11
2.8max
1.0
44
12
0.1 2.5
11.6
0.8
SANYO : QFP44MA (QIP44MA)
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.
82599TH(II)/13096HA(II)No.5233-1/9 No. 5233-1/9
LB8109M
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage VCD pin input voltage H bridge output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VCD max I OUT max Pd max Topr Tstg Maximum per channel is 400 mA. Independant IC Conditions Ratings 7 10 800 700 -20 to +75 -55 to +150 Unit V V mA mW C C
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage VCD pin input voltage VCC drop setting voltage when external voltage input is applied Symbol VCC VCD VCC (EXT) Conditions Ratings 1.6 to 5.0 3.6 to 9.0 3.0 to 5.0 Unit V V V
Electrical Characteristics at Ta = 25C, VCC = 3 V, VCD = 4 V
Parameter [Power Supply Block] Standby current drain VCC no-signal current drain VCD no-signal current drain [Externally set step-up circuit] ASP drive output current Reference voltage of step-up circuit VASP pin input bias current UPBASE pin saturation voltage Load regulation Line regulation Minimum off duty [S/S Pin Function] S/S start voltage S/S off voltage Output saturation voltage VOUT pin maximum output voltage PWM applied offset voltage DNB - 1,2 pins output current Load regulation Line regulation [Drive Control Block] CH1 to 4 input voltage range ASP REF input voltage range Input bias current Input offset voltage CH1,2,4 transfer gain CH3 L side transfer gain CH3 H side transfer gain VIN1-4 VASPR IB IN Voff IN G124IN G3LIN G3HIN Each V IN = VASP REF = 2 V VASP REF = 2 V RL =10 RL =10 RL =10 -30 7.1 7.1 13.6 8.3 8.3 14.8 0.5 1.2 VCD-0.5 VCD-1.3 2.0 +30 9.5 9.5 16.0 V V A mV dB dB dB [H Bridge Output Block, PWM Block] VH sat VOUT max VPWMOFF IO DNB1,2 RLD VOUT RLNVOUT VOUT = max, L = 30 H VOUT = max, L = 30 H At mute state (each output = 0) 0.23 I O = 200 mA, TOP + BOTTOM 0.30 2.25 0.26 VOUT/600 0.29 0.45 V V V A 1000 mV/A 100 mV/V VSS ON VSS OFF VCC -0.5 VCC -1.0 V V IO ASPDRV Vref ASP IB V ASP VO UPBASE RLD ASP RLN ASP Dmin ASP VASP = 1 V Determined at ASP drive pin VASP = 1.5 V I O = 1 mA VASP = 3.5 V, L = 30 H, C = 220 F VASP = 3.5 V, L = 30 H, C = 220 F 20 2.2 1.23 2.8 1.28 3.4 1.33 200 0.2 mA V nA V I CCO ICC ICD S/S = [H], the total of VCC and VCD S/S = [L], VCC line only S/S = [L], with no driver input 7.0 5.0 20 10.0 8.0 mA mA mA Symbol Conditions min Ratings typ max Unit
1000 mV/A 100 mV/V %
Continued on next page.
No. 5233-2/9
LB8109M
Continued from preceding page.
Parameter Negative/positive transfer gain difference Input dead zone voltage range G-SELECT pin low-gain side selection voltage G-SELECT pin high-gain side selection voltage [SLED Drive Circuit] SL REF pin input voltage range SL REF pin input bias current Positive side setting offset voltage between IN4 and SL REF Dual side step width difference voltage SL MODE pin high voltage SL MODE pin low voltage [Muting Block] Mute on voltage Mute off voltage [OP Amplifier Block] Input offset voltage Input bias current for each input Common-mode input voltage range Open-loop voltage gain [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 VEXT, VEXT-CHG pin Step-up circuit reference voltage EXTBASE pin saturation voltage [OSC Block] OSCPWR pin output voltage Maximum oscillation frequency Input bias current [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 [TSD Block] Operating temperature Temperature hysteresis width Symbol GIN VDZ VGSELL-TH VGSELL-TH RL =10 RL =10 , output voltage difference 5 mV or less Conditions min -1.0 0 2.0 1.0 Ratings typ 0 max +1.0 30 Unit dB mV V V
VSL REF IB SL REF Voff SL REF VSL DIFF VH SL MODE VL SL MODE VON MUTE VOFF MUTE VOFF OP IB OP VCM OP GV OP at f =10 kHz OPin(+) = OPin(-)= 2 V VSL REF = 2 V VSL REF = 2.3 V, VASP REF = 2 V VSL REF = 2.3 V, VASP REF = 2 V
VASP REF+0.1
VCD-1.0 200
V nA mV mV V
-20 -25 2.0
+20 +25
1.0 2.0 1.0 -5 +5 200 VCD-1.5 31 34 37
V V V mV nA V dB
VI EXT IO EXT DRV VZ I VZ IB EXTCHG IB EXT VrefE-CHG Vref EXT VEXTBASE
RIN =1 k VEXT = 1 V (CHG-ON [L]) VEXT =10 V, RIN =1 k VEXT = 1.5 V VEXT-CHG = 1.5 V (CHG-ON [H]) Both determined at EXTDRV pin EXT-CHG side: CHG-ON [H] IO = 1 mA
8.0 170 6.4 210 6.9 250 7.4 20 200 1.23 1.28 1.33 0.2
V A V mA nA V V
VOSCPWR FOSC max I B OSC VCHG REF VCHG-ON VCHG-OFF IB CHG MON I O CHG DRV TTSD TTSD VCHG MON = 0.3 V VCHG MON = 0 V Design target value, Note 1 Design target value, Note 1 VOSC = 0 V
VCC-0.15 100 -2.0 0.32 2.0 1.0 200 2.4 3.0 180 20 3.6 0.35 0.38
V kHz A V V V nA mA C C
Note 1: For parameters which have an entry of ``design target value'' in the ``Conditions'' column, no measurements are made.
No. 5233-3/9
LB8109M
Pd max -- Ta Allowable power dissipation, Pd max -- W
Ambient temperature, Ta -- C
Pin Assignment
No. 5233-4/9
LB8109M Pin Functions
Pin No. 1, 2 32, 33 Symbol IN1, IN2 IN3, IN4 Equivalent circuit Function Actuator control signals for each driver: IN1: Focus, IN2: Tracking, IN3: Spindle, IN4: Sled. These signals are input from the ASP (DSP).
30
ASPREF
Control reference signal input pin for each driver. This signal is input from the ASP (DSP).
43, 42 41, 40 38, 37 36, 35
OUT1+, 1- OUT2+, 2- OUT3+, 3- OUT4+, 4-
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.)
3 31
VOUT 1 VOUT 2
Power supply pins for the H bridge driver. VOUT1 is for the focus/tracking group and VOUT 2 is for the spindle/sled group. Maximum value + ( : saturation voltage of upper/lower output Tr) of control output for each 2CH is set by external PWM stepdown circuit.
4
VCD
Power supply for the actuator driver controller, maximum value circuit for PWM, sled controller, and MUTE block. 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.
5
CHGDRV
10
EXTDRV
15
DNB-1
Constant current value of each
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.
16
DNB-2
Constant-current circuit which Base drive output pin for the PNP-Tr changes with the input of CH1 for the step-down PWM that generates the power supply for the H bridge through 4. (3 mA max)
driver that drives the spindle/sled group actuators.
17
ASPDRV
Base drive output pin for the external NPN-Tr for the step-up circuit that sets the external voltage for the DSP.
Continued on next page.
No. 5233-5/9
LB8109M
Continued from preceding page.
Pin No. 6 Symbol CHG MON Equivalent circuit Function Constant-current feedback input pin for the charging circuit. The charging current is determined by comparing this input voltage and the internal reference voltage (0.35 V typ.).
13
EXTBASE
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. 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 CR. CR power supply pin that is used to prevent invalid current for the oscillation circuit in standby mode.
7
GND
8
OSC
9
OSCPWR
11
VEXT
Voltage feedback input pin for the external power supply step-down circuit. V CC 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. V CC for charging is set by comparing this pin voltage with the internal reference voltage (1.28 V typ.). Voltage feedback input pin for the step-up circuit. The step-up voltage is determined by comparing this pin voltage with the internal reference voltage (1.28 V typ.).
12
VEXTCHG
18
VASP
19
UPBASE
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. 5233-6/9
LB8109M
Continued from preceding page.
Pin No. 20 VZ
Zener diode Reference voltage startup circuit S/S function shant External power input Forced startup
Symbol
Equivalent circuit
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 by the Zener diode + 2VBE ; this pin has a current draining capacity up to 20 mA.
24
S/S
-
LB8109M start-up input. (Start on a low-level input.) Inverting input pin for internal OP amplifier. Noninverting input pin for internal OP amplifier. Output pin for internal OP amplifier. The output circuit type is ``push-pull.''
21
OPIN
22
OPIN
+
23
OPOUT
14
CHG-ON
Pin for selecting battery charging when external voltage input is applied. This pin determines 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.
25
MUTE
Input pin for simultaneously muting the drivers for the four channels. (High: mute) Pin for switching the spindle driver transfer gain between 8.3 dB and 14.8 dB (typ. value each). (Low: high gain) Pin for switching the sled driver between V-type control and step control. (High: V-type control; low: step control) Power supply voltage pin. Threshold input pin for driving the sled motor stepwise. Both the positive and negative step levels (with positive negative symmetry) are determined by the voltage differential between the pin voltage and the ASPREF pin voltage.
26
G-SELECT
27
SLMODE
28 29 33
VCC SLREF IN4
39
PGND
Output Tr. GND for the four-channel H bridge drivers. This pin is not internally connected to the small-signal system GND.
Continued on next page.
No. 5233-7/9
Bidirectional SW & Drive control
Bidirectional SW & Drive control
Bidirectional SW & Drive control
Bidirectional SW & Drive control
Mute circuit
+ +
Inversion detection
Block Diagram and Sample Application Circuit
LB8109M
0R
No. 5233-8/9
Note: It should be noted that Type Nos. and contants specified herein are for example only, with no guarantee for characteristics implied.
LB8109M 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 step-up circuit by using a coil with center tap (as shown in the Block Diagram). 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 low end of this 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 used if the SLMODE pin is set high, but by setting this pin low it is possible to use step drive mode, which has a marked effect in reducing power dissipation. (This only affects channel 4.) The step drive starting level is input from the SLREF pin (only a voltage higher than ASPREF will be accepted), 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 (greater than ASPREF) If this voltage is set, the negative side step start is determined automatically by setting the differential voltage betwwen SLREF and ASPREF on the opposite side as well.
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 expor ted without obtaining the expor t license from the author ities 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 August, 1999. Specifications and information herein are subject to change without notice.
PS No. 5233-9/9

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