Panasonic AN7077Z Datasheet

ICs for Audio Common Use

AN7077Z

Power supply and boost IC for class-H power amplifier

■ Overview

A BTL 50 W × 2-channel (maximum. 75 W × 2-

channel) class-H power amplifier can be made up by com­bining the power supply boost amplifier AN7077Z and
the single power supply BTL audio power amplifier
AN7194Z, and it is possible to make a low consumption
power system.

■ Features

• Incorporating various protection circuits

• Built-in standby circuit

• Peak detection circuit : Limits class-H operation at high

frequency

• Built-in timer circuit

If a current larger than allowable value continues to flow
into the power supply transformer, this circuit stops the
class-H operation to prevent the transformer from dam­age by a fire.

• Built-in mute function

• Built-in LED driver

■ Applications

• Miniature audio component, CD player radio cassette,

karaoke and other audio equipment

Unit : mm

18.00±0.30

13.50±0.30

φ3.60±0.10

115

19.00±0.30

19.30±0.30

1.27

0.50

+0.20

−0.10

4.00±0.20

1.50±0.10

10.0±0.30

(0.61)

(1.80) (1.95)

0.25

(2.54)

+0.15

−0.05

13.25±0.30

2.40±0.50

15.65±0.50

R0.55

3.25±0.10

18.95±0.50

HZIP015-P-0745A

1

AN7077Z ICs for Audio Common Use

■ Block Diagram

V

Mute

12

6

LED driver

14

ASO

Peek

1

V

CCH

det.

Level shift

4 V

BE

8

IN

Level shift

1 V

BE

10 kΩ

I

OUT

det.

15

9

24 V clamp

11

Class-H

mute

15 µA5 µA

V

= 6 V

RF

4

13

0.3 V
6 V

10

STB

■ Pin Descriptions

Pin No. Description

1 Power supply
2N.C.
3 Timer current setting
4 Current detection
5 Timer
6 Peak detection
7 GND
8 Input

7

GND

2

V

RF

Constant current

3

5

Pin No. Description

9NF
10 Standby
11 Muting
12 LED
13 Ripple filter
14 ASO
15 Output

2