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Monolithic Linear IC
No. 5630
LA6539M
Three-Channel CD-ROM Bridge Driver (BTL)
Overview
The LA6539M is a three-channel bridge driver (BTL) developed for use in CD-ROM drives.
Package Dimensions
unit: mm 3073A-MFP30SLF
[LA6539M]
Functions
Three-channel balanced transformerless (BTL) power amplifier IO max: 1 A Muting circuit Thermal shutdown function Slew rate (SR): 0.5 V/s (typical)
SANYO: MFP30SLF
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Maximum input voltage Mute pin voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VS max VIN VMUTE Pd max Topr Tstg Maximum rating for VS1 and VS2 VIN1 to VIN3 MUTE1, 2 Conditions Ratings 14 14 13 13 0.9 20 to +75 55 to +150 Unit V V V V W C C
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating voltage 2-1 Operating voltage 2-2 Symbol VCC VS1 VS2 The channel U operating voltage The channel U and W operating voltage Conditions Ratings 4 to 13 4 to 13 4 to 13 Unit V V V
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33197HA(OT) No. 5630-1/4
LA6539M Operating Characteristics at Ta = 25C, VCC = 12 V, VS1 = VS2 = 5 V
Parameter Symbol ICC1 ICC2 IS1-1 IS1-2 IS2-1 IS2-2 VIN VBUFFER1 VBUFFER2 VO1 VO2 VG SR VMUTE1, 2 IMUTE1, 2 The voltage applied to MUTE1 or MUTE2 at the point where the output goes on. The influx current to MUTE1 or MUTE2 at the point where the output goes on. Conditions All outputs on (mute 1 and 2: high) *1, 2 All outputs off (mute 1 and 2: low) *1 Channel U: on (mute 1: high) Channel U: off (mute 1: low) Channels V and W: on (mute 2: high) *2 Channels V and W: off (mute 2: low) 50 0.5 50 50 4.4 0 0 4.7 0.3 6 0.5 1.5 6 2 10 0.6 10 Ratings min 4 typ 8 4 5 max 15 10 10 1 20 1 +50 5 +50 +50 Unit mA mA mA mA mA mA mV V mV mV V V dB V/s V A
VCC no-load current drain VS1 no-load current drain VS2 no-load current drain Output offset voltage Input voltage range Buffer amplifier output voltage Output source voltage Output sink voltage Closed circuit voltage gain Slew rate Mute on voltage Mute on current
VOF1 to VOF3 Voltage differential between the channel U and W outputs Voltage range for VIN1 to VIN3 Voltage difference relative to 1/2 VS1 Voltage difference relative to 1/2 VS2 Output high, IO = 700 mA, all + outputs Output low, IO = 700 mA, all + outputs Bridge amplifier
Notes: 1. When MUTE1 is high, the channel U output will be on. 2. When MUTE2 is high, the channel V and W outputs will be on.
Truth Table
Input (VIN pins) H MUTE (MUTE1, 2) H L H L L CH-U UOUT + H N L N UOUT L N H N CH-V VOUT + H N L N VOUT L N H N CH-W WOUT + H N L N WOUT L N H N
Note: MUTE1 only operates for channel U, and MUTE2 only operates for channels V and W. MUTE1 and MUTE2 operate independently.
Pin Functions
Pin No. 1, 2, 14, 15, 16, 17, 29, 30 3 4 5 7 8 9 10 6 11 12 13 18 19 20 Pin RF GND VIN1 VIN1A VIN2 VIN2A VIN3 VIN3A MUTE1 BUFFER OUT1 BUFFER OUT2 VCC NC MUTE2 VS2 Substrate (lowest potential) Ground Channel U input Channel U input (for gain adjustment) Channel V input Channel V input (for gain adjustment) Channel W input Channel W input (for gain adjustment) Channel U output on/off control Buffer amplifier 1 output (1/2 VS1: typical), Generates the output stage reference voltage for channel U. Buffer amplifier 2 output (1/2 VS2: typical), Generates the output stage reference voltage for channels V and W. Power supply Unused Channels V and W on/off control Channels V and W output stage power supply
Drive
Function
Equivalent circuit
Continued on next page.
No. 5630-2/4
LA6539M
Continued from preceding page.
Pin No. 21 22 23 24 25 26 27 28 Pin WOUT WOUT + VOUT VOUT + UOUT UOUT + VS 1 VREF Channel W inverting output Channel W noninverting output Channel V inverting output Channel V noninverting output Channel U inverting output Channel U noninverting output Channel U output stage power supply Reference voltage for the level shifting circuit (shared by all channels)
Drive Thermal shutdown circuit
Function
Equivalent circuit
Block Diagram
No. 5630-3/4
LC6539M Sample Application Circuit
Microprocessor Glass-Epoxy PCB
Allowable power dissipation, Pdmax W
Copper foil
Reference value for a 1-mm steel plate
Mounted on a PCB
Thickness: 1.5 mm
Independent device
Ambient temperature, Ta = C
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s 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 March, 1997. Specifications and information herein are subject to change without notice. No. 5630-4/4

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