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LA6548NHLA6548ND LA6548NHLA6548ND
14
1
2
3
4
5
6
7
8
9
10
11
12
13
FR
15
28
27
26
25
24
23
22
21
20
19
18
17
16
FR
11k
11k
15.4k
15.4k
11k
11k
15.4k
15.4k
3.3V REG RESET
GND GND
V
CC
2
VREF
VIN4
VG4
VO4+
VO3+
VG3
VIN3
CD
RESET
( NC )
( NC )
VO4
-
VO3
-
V
CC
1
MUTE
VIN1
VG1
VO1+
VO2+
VG2
VIN2
REG-C
REG-B
( NC )
( NC )
VO1
-
VO2
-
30
29
28
27
26
25
24
17
23
22
21
20
19
18
16
1
2
3
4
5
6
7
11k
11k
15.4k
15.4k
11k
11k
15.4k
15.4k
RESET
V
CC
2
VREF
VIN4
VG4
VO4+
VO3+
GND
GND
GND
VIN3G
VIN3
CD
RESET
VO4
-
VO3
-
V
CC
1
MUTE
VIN1
VG1
VO1+
GND
GND
GND
VO2+
VG2
VIN2
REG-C
REG-B
VO1
-
VO2
-
14
8
9
10
11
12
13
15
29 Car Audio 30 Car Audio
Block Diagram Block Diagram
Muting (output on/off)
Level shifter
Level shifter
Level shifter
Level shifter
Collector connection for the
external pnp transistor
Base connection for the
external pnp transistor
Muting (output on/off)
Level shifter
Level shifter
Level shifter
Level shifter
Collector connection for the
external pnp transistor
Base connection for the
external pnp transistor
Four-Channel Driver IC for CD Players/DecksFour-Channel Driver IC for CD Players/Decks Four-Channel Driver IC for CD Players/DecksFour-Channel Driver IC for CD Players/Decks
Overview
Functions and Features
Overview
Functions and Features
■ Four power amplifier (BTL connection) circuits
■ Iomax: 0.7 A
■ Built-in level shifter circuits
■ Built-in muting circuit mutes all outputs (This circuit operates for the BTL
amplifier channels but does not affect the regulator circuit.)
■ Built-in regulator (3.3 V output, requires an external pnp transistor)
■ Thermal shutdown circuit
■ Package: DIP30SDLF (400 mil)
■ Four power amplifier (BTL connection) circuits
■ Iomax: 0.7 A
■ Built-in level shifter circuits
■ Built-in muting circuit mutes all outputs (This circuit operates for the BTL
amplifier channels but does not affect the regulator circuit.)
■ Built-in regulator (3.3 V output, requires an external pnp transistor)
■ Thermal shutdown circuit
■ Package: HSOP28H (375 mil)
The LA6548ND is a 4-channel driver for CD players/decks that features BTL amplifier circuits in all four channels.
The LA6548NH is a 4-channel driver for CD players/decks that features BTL amplifier circuits in all four channels.
3.3V REG
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-