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Sanyo Semiconductor
Sanyo Semiconductor

LA6548 Datasheet

4Ch Bridge BTL Driver


LA6548 Datasheet Preview


Ordering number : ENN*7886
LA6548
Monolithic Linear IC
4CH Bridge (BTL) Driver for CD
www.DataSheetO4Uv.ceomrview
The LA6548 is a 4CH bridge (BTL) driver with built-in 3.3VREG and RESET for CD players.
Functions
Bridge connection (BTL) POWER AMP 4CH.
Provides MUTE function (Activate for all channels output. When MUTE is H, output is ON.)
Built-in 3.3VREG (with external PNP transistor)
Built-in RESET circuit (with external capacitor, RESET output delay time can be set.)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Supply voltage
Allowable operation
VCC max
Pd max
*Measurement on the specific board
Maximum input voltage
VINB
MUTE pin voltage
VMUTE
Operating ambient temperature
Topr
Storage ambient temperature
Tstg
*Specific board size: 114.3mm × 76.1mm × 1.6mm, board material: glass epoxy resin.
Ratings
14
2.3
13
13
-20 to +75
-55 to +150
Recommended Operating Conditions at Ta = 25°C
Parameter
Operating voltage
RESET output SOURCE current
RESET output SINK current
Symbol
VCC
IORH
IORL
Conditions
Ratings
4 to 13
0 to 200
0 to 2
Unit
V
W
V
V
°C
°C
Unit
V
µA
mA
52504 JO IM No.7886-1/3
Page 1

LA6548
Electrical Characteristics at Ta = 25°C, VCC = 6V, VREF = 1.65V
Parameter
Symbol
Conditions
Ratings
min typ max
[Whole]
No-load current consumption 1
No-load current consumption 2
Output offset voltage
BUFFER input voltage range
Output voltage
Closed circuit voltage gain
ICC-ON
ICC-OFF
VOFF
VBIN
VO
VG
All channels output ON, MUTE; H
All channels output OFF, MUTE; L
Each channel
VREF BUFFER AMP input range
RL = 8.0*1
Input/Output gain
20 40
15 35
-50 50
1.5 VCC-1.5
2.6 3
9
Slew rate
SR
0.15
MUTE ON voltage
VMUTE
*2
1.2
[Power supply part] (2SB632K is used)
www.DataSheet4OUu.ctpoumt voltage
Line regulation
Load regulation
[Reset part]
VOUT1
VOLN1
VOLD1
IO = 200mA
4V VCC 12V
5mA IO 200mA
3.13
3.3 3.47
40 100
50 150
H reset output voltage
VORH
IORH = 200µA, Pin open Cd
3.08
3.25
3.42
L reset output voltage
Reset threshold voltage
VORL
VRT
ISRL = 2mA, short circuit between Cd and
GND.
*3
2.58
100
2.75
200
2.92
Reset hysteresis voltage
VHYS
*4
40 80 160
Reset output delay time
TD Cd = 0.1µF
10
*1. Output voltage differences when connecting the 8load between outputs for each channels.
*2. MUTE voltage when output is ON or OFF. When MUTE is H, all outputs are ON. When MUTE is L,
all channels are OFF.
*3. 3.3 VREG voltage when RESET is L.
*4. 3.3 VREG voltage difference between RESET "L" and RESET "H".
Unit
mA
mA
mV
V
V
dB
V/µs
V
V
mV
mV
V
mV
V
mV
ms
Package Dimensions
unit : mm
3227A
No.7886-2/3
Page 2

www.DataSheet4U.com
LA6548
PS No.7886-3/3
Page 3
Part Number LA6548
Manufactur Sanyo Semiconductor
Description 4Ch Bridge BTL Driver
Total Page 3 Pages
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