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Ordering number: EN 5231
Monolithic Linear IC
LA6537M
4-channel Bridge Driver
for CD and CD-ROMs
Overview
The LA6537M is a 4-channel bridge (BTL) driver which was
developed for compact discs and CD-ROMs.
Features and Functions
.
4-channel bridge (BTL) power amplifier.
.
IOmax 700 mA.
.
With mute circuit (Amp 3, Amp 4).
Package Dimensions
unit : mm
3073A-MFP30SLF
[LA6537M]
Pd max — Ta
PCB (glass epoxy resin) Cu foil
Steel substrate (t=1mm)
reference value
SANYO : MFP30SLF
Thickness 1.5 mm
Mounted on PCB (glass epoxy)
Independent IC
Allowable power dissipation, Pd max — W
Ambient temperature, Ta —°C
Specifications
Maximum Ratings atTa=25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum input voltage V
Mute pin voltage V
Allowable power dissipation Pd max * Mounted on PCB shown below 0.9 W
Operating temperature Topr –20 to +75
Storage temperature Tstg –55 to +150
* PCB (20 × 30 × 1.5 mm glass epoxy resin)
max 14 V
CC
INB
M
13 V
13 V
C
°
C
°
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TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
92995HA(II) No.5231-1/4
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LA6537M
Operating Conditions atTa=25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Electrical Characteristics atTa=25°C, VCC= 7.5 V
CC
4to13 V
Parameter Symbol
No-load current drain
Output offset voltage
V
V
Input bias current I
Buffer input voltage range V
Input voltage range V
Output source voltage V
Output sink voltage V
I
1 Note 1 20 40 60 mA
CC
I
2 Note 2 26 60 mA
CC
1 Note 3, amplifiers1—2,7—8 –50 +50 mV
OF
2 Note 3, ampifiers3—4,5—6 –50 +50 mV
OF
B
BIN
IN
1 Note 4, RL= 8.0 Ω 5.0 5.6 V
O
2 Note 5, RL= 8.0 Ω 1.8 2.4 V
O
Conditions
min typ max Unit
100 500 nA
1.5 VCC−1.5 V
1.0 VCC−1.5 V
Closed-circuit voltage gain VG Bridge amplifier 12 dB
Slew rate SR 0.15 V/µs
Mute on voltage V
Mute pin inflow current I
M
Note 6 2 V
M
Note 6 60 µA
Notes:
1. Mute off and buffer in assume 1/2 V
CC
V.
2. Mute off and buffer in assume 0.5 V.
3. Represents the interoutput difference.
4. Voltage relative to ground (source) when an 8 Ω load is connected between bridge amplifier outputs.
5. Voltage relative to ground (sink) when an 8 Ω load is connected between bridge amplifier outputs.
6. Muting is activated when high, and the amplifier outputs 3 and 4 are off.
Test Method
SW No.
Item
1
I
CC
2
I
CC
1,2
V
OF
I
B
1
V
O
2
V
O
V
M
I
M
VG b ON ON OFF OFF b b OFF ON OFF OFF b ON ON
1234567891011121314
a ON ON OFF OFF b b OFF ON OFF OFF b OFF OFF
a ON ON OFF OFF b b OFF ON OFF OFF a OFF OFF
b ON ON OFF OFF b b OFF ON OFF OFF b OFF OFF
b OFF OFF ON OFF a a ON OFF OFF OFF b OFF OFF
b OFF ON OFF ON b a OFF OFF OFF ON b OFF OFF
b OFF OFF OFF OFF a b OFF ON ON ON b OFF OFF
b ON ON OFF OFF b b OFF ON OFF OFF b OFF OFF
b ON ON OFF OFF b b OFF ON OFF OFF b OFF OFF
1. For ICC1 and 2, measure the inflow current on the VCCpin.
2. For V
1 and 2, measure the voltage between pins 3 and 4 (amplifiers 1 and 2), pins 27 and 28 (amplifiers 7 and 8), pins 12
OF
and 13 (amplifiers 3 and 4), and pins 18 and 19 (amplifiers 5 and 6).
3. For I
4. For V
5. V
6. I
, measure the voltage across the 100 kΩ resistor (IB= V/100 kΩ).
B
1 and 2, measure each output voltage at input voltages 1.75 V and 5.75 V, respectively.
O
is the mute pin (pin 7) voltage when the output goes off.
M
is the mute pin (pin 7) inflow current when the output goes off.
M
7. For VG, measure the voltage between pins 3 and 4 (amplifiers 1 and 2), pins 27 and 28 (amplifiers 7 and 8), pins 12 and 13
(amplifiers 3 and 4), and pins 18 and 19 (amplifiers 5 and 6) atf=1kHz, and use the following formula:
VG = 20 log V
O/V1
dB.
No.5231-2/4
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Test Circuit
LA6537M
Block Diagram and Pin Assignment
Do not use the NC pin.
Top view
No.5231-3/4
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Sample Application Circuit
LA6537M
Load
Load
Load
Load
Top view
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.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 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:
2 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.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurateandreliable,butno 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 September,1995. Specifications and information herein are subject to change without notice.
No.5231-4/4
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