SANYO LA6541D Datasheet

Ordering number: EN 5591

Monolithic Linear IC

LA6541D

4-channel Bridge Driver

for Compact Discs

Functions and Features

.

4-channel bridge (BTL) power amplifier.

.

IOmax. 700 mA.

.

With mute circuit
(Affects all amplifier outputs, Amp 1 to Amp 8).
(When the mute voltage is low, the outputs turn off;
when the mute voltage is high, the outputs turn on).

.

5.0 V regulator built in (Uses external PNP transistor).

.

Reset circuit built in (The reset output delay time can be
adjusted through an external capacitor).

Package Dimensions

unit : mm

3196-DIP30SLF

[LA6541D]

SANYO : DIP30SLF

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum input voltage V
Mute pin voltage V

Allowable power dissipation Pd max
Operating temperature Topr –20 to +75 °C

Storage temperature Tstg –55 to +150 °C

max 14 V

CC

IN

Mute

When using standard board
(material: glass epoxy)

13 V
13 V

2.5 W

Recommended Operating Conditions at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Operating voltage V
Reset output source current I
Reset output sink current I

CC
ORH
ORL

5.6 to 13 V
0 to 200 µA

0to2 mA

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

D2096HA (II) No.5591- 1/7

LA6541D

Electrical Characteristics at Ta = 25°C, VCC= 8.0 V, V

Parameter Symbol

No-load current drain

V

Output offset voltage

V

Buffer amplifier input voltage
range

Input voltage range V
Output source voltage V
Output sink voltage V

I

1 When all amplifier outputs are on (Mute high) 20 40 mA

CC

I

2 When all amplifier outputs are off (Mute low) 15 35 mA

CC

OF

OF

V

BIN

IN
O
O

Amplifier 1 to 2 (V

1

Amplifier 3 to 4 (V
Amplifier 5 to 6 (V

2

Amplifier 7 to 8 (V

1 Note 1, when RL= 8.0 Ω 5.0 5.6 V
2 Note 2, when RL= 8.0 Ω 1.8 2.4 V

Conditions

1toVO2),

O

3toVO4)

O

5toVO6),

O

7toVO8)

O

REF

=4V

min typ max Unit

–50 50 mV

–50 50 mV

1.5

1.0

VCC−1.5
VCC−1.5

Closed-circuit voltage gain VG Between bridge amplifiers 9 dB
Slew rate SR 0.15 V/µs
Mute on voltage V

Mute

Note 3 1.2 V
[Power Supply] (with 2SK632K connected externally)
Output voltage V
Line regulation ∆V
Load regulation ∆V

1I

OUT

OLN
OLD

= 200 mA 4.75 5.0 5.25 V

O

1 5.6 % VIN1 % 12 V 20 100 mV

15mA%IO%200 mA 50 150 mV
[Reset]
High reset output voltage V
Low reset output voltage V
Reset threshold voltage V

ORH
ORL

RT

I

= 200 µA, Cd pin open 4.73 4.98 5.23 V

ORH

I

= 2 mA, Cd is shorted to GND 100 200 mV

SRL

Note 4 4.3 V
Reset hysteresis voltage Vhys Note 5 40 100 200 mV
Reset output delay time td Cd = 0.1 µF 10 ms

V
V

Notes:

1. Source voltage to ground when an 8 Ω load is connected between bridge amplifier outputs.

2. Sink voltage to ground when an 8 Ω load is connected between bridge amplifier outputs.

3. When the mute signal is high, all amplifier outputs turn on, and when low, all amplifier outputs turn off. When the mute
signal is low, amplifier output is undefined.

4. 5 V supply voltage when the reset output goes low.

5. Potential difference from the 5 V supply voltage when the reset output goes low and when it goes high.

Pd max – Ta

Independent IC

Allowable power dissipation, Pd max – W

Ambient temperature, Ta – °C

No. 5591- 2/7

LA6541D

Pin Functions

Pin No. Pin Name Description (Function)

1V

CC

2 Mute ON/OFF control for all BTL AMP outputs
3V

1 BTL AMP 1 input

IN

4 VG1 BTL AMP 1 input (for gain control)
5V
6V

1 BTL AMP 1 output (non-inverting side)

O

2 BTL AMP 1 output (inverting side)

O

7 GND GND (minimum electric potential)
8 GND GND (minimum electric potential)
9 GND GND (minimum electric potential)

10 V

11 V

3 BTL AMP 2 output (inverting side)

O

4 BTL AMP 2 output (non-inverting side)

O

12 VG2 BTL AMP 2 input (for gain control)
13 V

2 BTL AMP 2 input

IN

14 REG OUT Connection for collector of external transistor (PNP); 5 V supply output
15 REG IN Connection for base of external transistor (PNP)
16 RES
17 C
18 V

D

3 BTL AMP 3 input

IN

19 VG3 BTL AMP 3 input (for gain control)
20 V
21 V

5 BTL AMP 3 output (non-inverting side)

O

6 BTL AMP 3 output (inverting side)

O

22 GND GND (minimum electric potential)
23 GND GND (minimum electric potential)
24 GND GND (minimum electric potential)
25 V
26 V

7 BTL AMP 4 output (inverting side)

O

8 BTL AMP 4 output (non-inverting side)

O

27 VG4 BTL AMP 4 input (for gain control)
28 V
29 V
30 V

4 BTL AMP 4 input

IN

REF

CC

Power supply (shorted with pin 30)

Reset output
Reset output delay time setting (with capacitor)

Reference voltage input for level shift circuit
Power supply (shorted with pin 1)

No. 5591- 3/7