Datasheet L4959 Datasheet (SGS Thomson Microelectronics)

®

L4959

MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO

4 OUTPUTS:
12V (1.3A); 12V (0.8A); 8.6V (0.6A); 5.6V
(0.25A) STA N DBY

OUT1 12V(a), OU T2 12V(b) AND OUT3 8.6V
WITH INDEPENDENT ENABLE CONTROL
FOR STAND-BY MODE

SHORT- C IR CUIT P R OT E C TIO N TO GROUND
THERMAL SHUTDOWN

DESCRIPTION

The L4959 is a monolithic Multifunction Voltage
Regulator, designed mainly for supplying Home
Audio systems. The L4959 contains one un­switched linear 5.6V regulator for Micro, two
switched regulators 8.6V and 12V, suitable to
feed CD or CD players and LED, Signal Process.
An additional 12V regulator for Solenoid Motor an
CD_TRAY Driven is also available.

ORDERING NUMBER:

Multiwatt 11

L4959

BLOCK DIAGRAM

2/10

V

S

EN 8V

EN 12V(a)

EN 12V(b)

8

7

5

REF

GEN

D97AU569C

5.6V, 250mA

REGULATOR

8.6V, 600mA

REGULATOR

SWITCHED

12V, 800mA

REGULATOR

SWITCHED

12V, 1.3A

REGULATOR

SWITCHED

3

9

11

1

6

OUT 5.6V

OUT 8.6V

OUT 12V(a)

OUT 12V(b)

GND

January 1999

1/6

L4959

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

I

O

T

op

T

stg

DC Supply Voltage 35 V
Output Current internally limited
Operating Temperature Range 0 to +70 °C
Storage Temperature –40 to 150 °C

PIN CONNECTION

(Top view)

11
10

9
8
7
6
5
4
3
2
1

TAB CONNECTED TO PIN 6

PIN DESCRIPTION

Pin Pins Description

1 OUT 12V (b) 12V/1.3A SWITCHED OUTPUT VOLTAGE
2V

S

3 OUT 5.6V 5.6V/250mA OUTPUT VOLTAGE
4 N.C. not connected
5 EN 12V (b) Enable 12V/1.3A SWITCHED OUTPUT VOLTAGE
6 GND Ground
7 EN 12V (a) Enable 12V/0.8A SWITCHED OUTPUT VOLTAGE
8 EN 8.6V Enable 8.6V/0.6A SWITCHED OUTPUT VOLTAGE
9 OUT 8.6 8.6V/0.6A SWITCHED OUTPUT VOLTAGE

10 V

S

11 OUT 12V (a) 12V/0.8A SWITCHED OUTPUT VOLTAGE

Supply Voltage

Supply Voltage

D97AU716A

OUT 12V(a)
V

S

OUT 8.6V
EN 8.6V
EN 12V(a)
GND
EN 12V(b)
N.C.
OUT 5.6V
V

S

OUT 12V(b)

QUICK REFERENCE DATA

Symbol Parameter Test Condition Typ. Unit

5V Output Voltage IO = 125mA 5.6 V

14.4V < V

< 21.6V

S

5.6 V

5mA < I < 0.25A

8.6V Output Voltage IO = 300mA 8.6 V

14.4V < V

< 21.6V 5mA < I < 0.6A 8.6 V

S

12V Output Voltage Iout = 400mA 12 V

14.4V < V

< 21.6V

S

12 V

5mA < I < 0.8A

12V Output Voltage Iout = 650mA 12 V

14.4V < VS < 21.6V 5mA < I < 1.3A 12 V

2/6

V

out 5V

V

out 8V

V

out 12Va

V

out 12Vb

THERMAL DATA

Symbol Parameter Value Unit

R

th j-case

Thermal Resistance Junction-case 2 °C/W

L4959

ELECTRICAL CHARACTERISTICS

(V

= 18V, T

S

= 25°C, unless otherwise specified.)

case

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

S

Operating Supply Voltage no load 15 22 30 V

loaded (*) 14.4 18 21.6 V

En Output Noise Voltage Any reg. supply,

200 400 µV

f = 100Hz to 20KHz

I

q

Quiescent Current 8 mA

5.6V/250mA OUTPUT VOLTAGE

V

∆V

∆V

V

dropout

out 5V

line

load

I

lim

5V Output Voltage IO = 125mA 5.45 5.9 V

14.4V < V

< 21.6V

S

5.40 6 V

5mA < I < 0.25
Line Regulation 14.4V < VS < 21.6V 5 50 mV
Load Regulation 5mA < Io < 250mA 50 150 mV
Dropout Voltage I

= 250mA 2.05 2.7 V

out

Current Limit VS = 21.6V 250 325 mA

8.6V/0.6A SWITCHED OUTPUT VOLTAGE

V

out 8V

∆V

line

∆V

load

V

dropout

I

lim

SWon Switch ON 2.31 3.5 V

SW off Switch OFF 1.5 2.11 V

SW hyst Switch Hysteresis 200 mV

8.6V Output Voltage IO = 300mA 8.4 9.1 V

14.4V < VS < 21.6V 5mA < I < 0.6A 8.3 9.2 V
Line Regulation 14.4V < VS < 21.6V 5 50 mV
Load Regulation 5mA < Io < 0.6A 50 350 mV
Dropout Voltage I

= 0.6A 2.05 2.7 V

out

Current Limit VS = 21.6V 0.6 0.8 A

12V/0.8A SWITCHED OUTPUT VOLTAGE

V

out12Va

∆V

line

∆V

load

V

dropout

I

lim

SVR Supply Voltage Rejection f = 100Hz

SWon Switch ON 2.31 3.5 V

SW off Switch OFF 1.5 2.11 V

SW hyst Switch Hysteresis 200 mV

12V Output Voltage I

= 400mA 11.7 12.7 V

out

14.4V < VS < 21.6V

11.6 12.8 V

5mA < I < 0.8A
Line Regulation 14.4V < Vs < 21.6V 10 50 mV
Load Regulation 5mA < Io < 0.8A 100 350 mV
Dropout Voltage I

= 0.8A 2.13 2.7 V

out

Current Limit VS = 21.6V 0.8 1.1 A

f = 10KHz

55
40

75 dB

12V/1.3A SWITCHED OUTPUT VOLTAGE

V

out12Vb

∆V

∆V

V

dropout

line

load

I

lim

12V Output Voltage I

= 650mA 11.6 12.6 V

out

14.4V < VS < 21.6V

11.5 12.7 V

5mA < I < 1.3A
Line Regulation 14.4V < Vs < 21.6V 10 50 mV
Load Regulation 5mA < Io < 1.3A 200 450 mV
Dropout Voltage I

= 1.3A 2.15 2.7 V

out

Current Limit VS = 21.6V 1.3 1.7 A

3/6

L4959

ELECTRICAL CHARACTERISTICS

(continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

SVR Supply Voltage Rejection f = 100Hz

f = 10KHz

55
40

75 dB

SWon Switch ON 2.31 3.5 V

SW off Switch OFF 1.5 2.11 V

SW hyst Switch Hysteresis 200 mV

(*) The max value is limited by the power dissipation

Figure 1:

Application and Test Circuit.

+V

S

GND

C1

2200µF

35VL

+5V

C2

0.33µF

V

CC

G

EN8.6V

EN12Va

3

2
10

L4959

6

87 5

EN12Vb

5.6V 0.25A

C3

0.1µF

11

1

9

C4

0.1µF

C5

0.1µF

C6

0.1µF

100µF

16VL

C7

C8

100µF

16VL

C9

100µF

16VL

12Va 0.8A

12Vb 1.3A

8.6V 0.6A

C10

100µF

16VL

µ-PROC

SIGNAL

DECK

CD

Figure 2:

D97AU802

PCB and Components layout of the Figure 1.

4/6

L4959

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 5 0.197
B 2.65 0.104
C 1.6 0.063
D 1 0.039
E 0.49 0.55 0 .019 0.022

F 0.88 0.95 0.035 0.037

G 1.45 1.7 1.95 0 .057 0.067 0.077
G1 16.75 17 17.25 0.659 0.669 0.679
H1 19.6 0.772
H2 20.2 0.795

L 21.9 22.2 22.5 0.862 0.874 0.886
L1 21.7 22.1 22.5 0.854 0.87 0.886
L2 17.4 18.1 0.685 0.713
L3 17.25 17.5 17.75 0.679 0.689 0.699
L4 10.3 10.7 10.9 0.406 0.421 0.429
L7 2.65 2.9 0.104 0.114
M 4.25 4.55 4.85 0.167 0.179 0.191

M1 4.73 5.08 5.43 0.186 0.200 0.214

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

Dia1 3.65 3.85 0.144 0.152

mm inch

OUTLINE AND

MECHANICAL DATA

Multiwatt11 V

5/6

L4959

Information furnishe d is beli eved to be accu rate and reliable. However, STMicroelec tronics assumes no res ponsibility for the consequences
of use of such i nformation nor for any i nfringement of patents or ot her rights of third par ties which may result from its use. No license i s
granted by impli cation or otherwis e under any patent or patent righ ts of STMicroelect ronics. Specifica tion mentioned in this publication are
subject to change without notic e. This public ation supers edes and replaces all information prev iously supplied. STMic roelec tronic s products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelect roni cs

© 1999 STMicroelectronics – Printed in Italy – All Rights Reserved

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Nether la nds -

Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

http://www.st.com

6/6