LA5611 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA5611

Multifunctional Voltage Regulator for TVs and VCRs

SANYO -> Panasonic 

LA5611

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

Function

Input line

Current limit

Thermal limit

On/off control

Circuit block

VO1

VIN1

×

V

V

VO2

VIN2

V

V

V

VO3

VIN2

V

V

×

VO4

VIN1

V

×

×

Control

amplifier

VIN1

×

×

×

Usage Notes

(1) Apply voltages to the voltage input pins on condition that VIN1 ^ VIN2.

(2) Supply the voltages simultaneously to VIN1 and VIN2. Do not use the LA5611 with voltage applied to only one of these pins.

(3) Since the control circuit of regulator 1 does not have current limit protection of such as an external NPN transistor, provide

this protection in each application.

Logic Table

Conditions : when VIN1^ VIN2 (at VIN1 ^ 11.5 V, VIN2 ^ 6.2 V)

EN

L or open

H

VO1, VO2

H

L

(1) ‘‘H’’ for EN denotes high level; ‘‘L’’ denotes low level.

(2) ‘‘H’’ for VO denotes output ON voltage; ‘‘L’’ denotes output OFF voltage.

Thermal Design Notes

(1) In the LA5611, the junction temperature (Tj) at which thermal shutdown is activated is approximately equal to 130°C.

(2) Consequently, the operating temperature 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

Ambient temperature, Ta — °C

No.5196-4/5

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