Datasheet LA5612 Datasheet (SANYO)

Ordering number: EN 5197

Monolithic Linear IC

LA5612

Multifunctional Voltage Regulator

for TVs and VCRs with BS Tuner

Applications

.

Audiovisual equipment, VCRs and TVs with BS tuner

Package Dimensions

unit : mm

3107-SIP13H

Features

.

Low-saturation regulator (ON/OFF function built in)

.

Control amplifier built in.

.

Current limit and thermal limit circuits built in

.

Reverse current prevention provided (VO1)

[LA5612]

SANYO : SIP13H

Specfications

Maximum Ratings atTa=25°C

Parameter Symbol Conditions Ratings Unit

V

1 max 22 V

Maximum input voltage

Allowable power dissipation Pd max No heat sink 2 W
Thermal resistance between

junction and case
Operating temperature Topr –20 to +80
Storage temperature Tstg –40 to +150

IN

V

2 max VIN1^VIN2V

IN

θj-c 4.7

1

IN

C/W

°

C

°

C

°

Operating Conditions atTa=25°C

Parameter Symbol Conditions Ratings Unit

V

1 11.5 to 20 V

Input voltage

Output current 1 I
Output current 2 I
Output current 3 I

IN

V

2 6.2 to 20 V

IN

1 10 to 360 mA

O

2 10 to 420 mA

O

3 10 to 420 mA

O

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92895HA (II) No.5197-1/5

LA5612

Operating Characteristics atTa=25°C, See specified Test Circuit.

Parameter Symbol Conditions min typ max Unit

[No-load mode] When V

Quiescent current

[Regulator 1] When V

Output voltage 1 V
Dropout voltage V
Line regulation nV
Load regulation nV
Output inflow current I
Peak output current I
Output short-circuit current I
Ripple rejection Rrej1 50 dB
Output low-level voltage V
Output voltage/temperature

coefficient

[Regulator 2] When VO1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V, IO2 = 350 mA

Output voltage 2 V
Dropout voltage V
Line regulation nV
Load regulation nV
Peak output current I
Output short-circuit current I
Ripple rejection Rrej2 50 dB
Output low-level voltage V
Output voltage/temperature

coefficient

[Regulator 3] When VO1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V, IO3 = 350 mA

Output voltage 3 V
Dropout voltage V
Line regulation nV
Load regulation nV
Peak output current I
Output short-circuit current I
Ripple rejection Rrej3 50 dB
Output low-level voltage V
Output voltage/temperature

coefficient

[Output on/off control] VIN1 = 16.5 V, VIN2 = 6.6 V

Output on control voltage

Output off control voltage

[Amplifier A] When V

Input offset voltage V
Input bias current I
Output current (source) I
Output current (sink) I

[Amplifier B] When V

Output current (source) I

1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V, IO1toIO3=0mA

O

1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V, IO1 = 300 mA

O

1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V

O

1, VO2, VO3ison:VEN1=3V,VEN2=3V,VIN1 = 16.5 V, VIN2 = 6.6 V

O

I

1 714mA

IN

I

2 816mA

IN

1 13.7 14.5 15.2 V

O

1 0.5 1.0 V

DROP

1 16.5 V % VIN1 % 20.5 V 140 mV

OLN

1 10mA % IO1 % 300 mA 150 mV

OLD

1 IN 22 V applied to pin VO1, no-load mode 500 µA

O

1 360 mA

OP

1 45 180 mA

OSC

1 OFF VEN1=1V,when VO1isoff 0.2 V

O

nV

1/nTa ±0.5

O

2 4.80 5.05 5.30 V

O

2 0.5 1.0 V

DROP

26V%VIN2 % 7.2 V 20 mV

OLN

2 100 mA % IO2 % 350 mA 100 mV

OLD

2 420 mA

OP

2 65 210 mA

OSC

2 OFF VEN2=1V,when VO2isoff 0.2 V

O

nV

2/nTa ±0.5

O

3 4.80 5.05 5.30 V

O

3 0.5 1.0 V

DROP

36V%VIN2 % 7.2 V 20 mV

OLN

3 100 mA % IO3 % 350 mA 100 mV

OLD

3 420 mA

OP

3 65 210 mA

OSC

3 OFF VEN2=1V,when VO3isoff 0.2 V

O

nV

3/nTa ±0.5

O

V

1H VO1: on, VEN1<22V

EN

V

2H VO2, VO3: on, VEN2<22V

EN

V

1L VO1: off

EN

V

2L VO2, VO3: off

EN

IOA
BA

OA SOURCEVINA

OA SINKVINA

OB SOURCE

+

=1V,V

+

=0V,V

INA
INA

–

= 0 V 10 mA

–

= 1 V 10 mA

3.0 V

10 mA

IN

1.0 V

±7mV

250 nA

mV/°C

mV/°C

mV/°C

1V

No.5197 - 2/5

LA5612

Pd max — Ta

Aluminum heat sink

Infinite heat sink

No heat sink

Allowable power dissipation, Pd max — W

Ambient temperature, Ta —°C

Note 1: The tightening torque referred to in the above figure is a condition specified for the heat dissipation characteristics and not

a working condition to be met when mounting the heat sink.

Test Circuit

mounting conditions
Tightening torque: 4 kg.cm Note 1

With plain washer and
silicone grease applied

or

its equivalent

Pin Functions

No. Symbol Function

1V
2V
3 EN1 Regulator 1 on/off control. High active.
4V
5V
6V
7 GND Substrate of the LA5612 (minimum potential).
8V
9V

10 EN2 Regulator 2 and regulator 3 on/off control. High active.

11 V
12 V
13 V

1 High voltage input.

IN

1 14.5 V/300 mA regulator, with reverse current prevention.

O

(+) Amplifier A noninverting input.

INA

(–) Amplifier A inverting input.

INA
OA

OB

(–) Amplifier B inverting input (5 V regulator supported by external NPN transistor).

INB

3 5.05 V/350 mA regulator.

O

2 5.05 V/350 mA regulator.

O

2 Low-voltage input.

IN

Amplifier A output.

Amplifier B output (5 V regulator supported by external NPN transistor).

No.5197 - 3/5

LA5612

Function Table (V: built in, ×: not built in)

Function

Circuit block

Input line V
Current limit VVV ××
Thermal limit VVV ××
On/off control EN1 EN2 EN2 ××

Usage Notes

(1) Apply voltage to the voltage input pins on condition that VIN1 ^ VIN2.
(2) Apply voltage simultaneously to V
(3) Since the amplifiers do not have current limit protection such as an external NPN transistor, provide this protection in each

application.

Logic Table

Conditions : when VIN1^ VIN2 (at VIN1 ^ 4V,VIN2 ^ 4V)

EN1,EN2 VO1, VO2, VO3
L or open L

HH

1V

V

O

1V

IN

1 and VIN2. Do not use the LA5612 with voltage applied to only one of these pins.

IN

2V

O

2V

IN

3 AMP A AMP B

O

2V

IN

1V

IN

1

IN

(1) ‘‘H’’ for EN denotes high level; ‘‘L’’ denotes low level or open.
(2) ‘‘H’’ for V

denotes output ON voltage; ‘‘L’’ denotes output OFF voltage.

O

(3) Each output voltage corresponds to each EN and is controlled independently.

(EN1 is coupled with V

1, and EN2 with VO2 and VO3.)

O

Thermal Design Notes

(1) In the LA5612, the junction temperature (Tj) at which thermal shutdown is activated is approximately equal to 130°C.
(2) Consequently, the operating range of REG1, REG2 and REG3 with the thermal shutdown function is restricted by the thermal

shutdown characteristics (typical value) shown in the figure below.

(3) The thermal shutdown characteristics vary ±20°C or so. Since thermal shutdown is liable to occur with inadequate heat

dissipation, sufficient consideration must be given to the heat dissipation design.

Thermal Shutdown Characteristics

Typical Characteristics

Allowable power dissipation, Pd — W

Ambient temperature, Ta —°C

No.5197 - 4/5

LA5612

Equivalent Circuit Block Diagram and Sample Application Circuit

Thermal

Start-up

Reverse current

prevention

shutdown
detection

External Tr

5 V output

Application Notes

(1) The input line for AMP A and AMP B is shared with VIN1.
(2) AMP A and AMP B are on in normal use.
(3) The output voltage is 5 V when an external NPN transistor has been added.
(4) Depending on the type, load current and connection position (distance from the LA5612) of the external NPN transistor, the

value of a capacitor connected between emitter and ground must be changed for stable operation.

(5) The capacitors connected between each pin and GND are bypass capacitors for preventing oscillation: as such, they must be

positioned as close to the LA5612 as possible in order to stabilize operation.

No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment,
nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or
indirectly cause injury, death or property loss.

Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors

and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and
expenses associated with such use:

2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO

ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume
production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use
or any infringements of intellectual property rights or other rights of third parties.

This catalog provides information as of September, 1995. Specifications and information herein are subject to change without notice.

No.5197 - 5/5