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LA5611 Datasheet(PDF) 4 Page - Sanyo Semicon Device

Part No. LA5611
Description  Multifunctional Voltage Regulator for TVs and VCRs
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Maker  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA5611 Datasheet(HTML) 4 Page - Sanyo Semicon Device

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Function Table
(V: built in,
×: not built in)
Circuit block
Function
VO1VO2VO3VO4
Control
amplifier
Input line
VIN1VIN2VIN2VIN1VIN1
Current limit
×
VVV
×
Thermal limit
VVV
××
On/off control
VV
×××
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
VO1, VO2
L or open
H
HL
(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
LA5611
No.5196 - 4/5


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