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STA518A

November 2004

This is preliminary information on a new product now in development. Details are subject to change without notice.

1

FEATURES

■ MULTIPOWER BCD TECHNOLOGY

■ MINIMUM INPUT OUTPUT PULSE WIDTH

DISTORTION

■ 200mΩ RdsON COMPLEMENTARY DMOS

OUTPUT STAGE

■ CMOS COMPATIBLE LOGIC INPUTS

■ THERMAL PROTECTION

■ THERMAL WARNING OUTPUT

■ UNDER VOLTAGE PROTECTION

■ SHORT CIRCUIT PROTECTION

2

DESCRIPTION

STA518A is a monolithic quad half bridge stage in

Multipower BCD Technology. The device can be

used also as dual bridge or reconfigured, by connect-

ing CONFIG pin to Vdd pin, as single bridge with dou-

ble current capability.

The device is particularly designed to make the out-

put stage of a stereo All-Digital High Efficiency

(DDX™) amplifier capable to deliver an output power

of 24W x 4 channels @ THD = 10% at Vcc 30V on 4Ω

load in single ended configuration.

It can also deliver 50 + 50W @ THD = 10% at Vcc 29V

as output power on 8

Ω load in BTL configuration and

70W @ THD = 10% at Vcc 34V on 8Ω in single paral-

leled BTL configuration. The input pins have thresh-

old proportional to VL pin voltage.

PRODUCT PREVIEW

45V 3.5A QUAD POWER HALF BRIDGE

Figure 2. Audio Application Circuit ( Quad single ended)

L11 22

µH

L12 22

µH

C51

1

µF

C71

100nF

C91

1

µF

C81

100nF

C31 820

µF

C21

2200

µF

C58

100nF

C58

100nF

R57

10K

R59

10K

R41

20

R61

5K

R62

5K

R51

6

C53

100nF

C60

100nF

C61

100nF

15

M3

IN1A

IN1A

VL

CONFIG

PWRDN

PWRDN

FAULT

TRI-STATE

TH_WAR

TH_WAR

+3.3V

IN1B

VDD

VDD

VSS

VSS

VCCSIGN

VCCSIGN

GND-Reg

GND-Clean

IN2A

IN1B

IN2A

IN2B

PROTECTIONS

&

LOGIC

REGULATORS

29

23

24

25

27

26

28

30

21

22

33

34

35

36

M2

M5

M4

17

16

OUTPL

PGND1P

OUTPL

VCC1P

14

12

10

11

OUTNL

PGND1N

OUTNL

VCC1N

13

C52

1

µF

+VCC

C62

100nF

7

M17

M15

M16

M14

8

9

OUTPR

PGND2P

OUTPR

VCC2P

6

4

2

3

OUTNR

PGND2N

D03AU1474

OUTNR

VCC2N

5

19

31

20

GNDSUB

1

IN2B

32

C72

100nF

C92

1

µF

C82

100nF

R52

6

C41

330pF

R42

20

C42

330pF

C32 820

µF

L13 22

µH

L14 22

µH

C73

100nF

C93

1

µF

C83

100nF

C33 820

µF

R43

20

R53

6

C74

100nF

C94

1

µF

C84

100nF

R54

6

C43

330pF

R44

20

C44

330pF

C34 820

µF

R63

5K

R64

5K

R65

5K

R66

5K

R67

5K

R68

5K

4

Ω

4

Ω

4

Ω

4

Ω

REV. 1

Figure 1. Package

Table 1. Order Codes

Part Number

Package

STA518A

PSSO36 (slug up)

STA518ATR

in Tape & Reel

PSSO36 (slug up)

Obsolete

Product(s)

- Obsolete

Product(s)

Obsolete

Product(s)

- Obsolete

Product(s)