Sanyo LA5612 Multifunctional voltage regulator for tvs and vcrs with bs tuner Datasheet

Ordering number: EN 5197
Monolithic Linear IC
LA5612
Multifunctional Voltage Regulator
for TVs and VCRs with BS Tuner
Applications
Package Dimensions
. Audiovisual equipment, VCRs and TVs with BS tuner
unit : mm
3107-SIP13H
Features
[LA5612]
. Low-saturation regulator (ON/OFF function built in)
. Control amplifier built in.
. Current limit and thermal limit circuits built in
. Reverse current prevention provided (V 1)
O
SANYO : SIP13H
Specfications
Maximum Ratings at Ta = 25 °C
Parameter
Maximum input voltage
Symbol
Conditions
Ratings
VIN1 max
Unit
22
V
VIN2 max
VIN 1^VIN 2
VIN1
Allowable power dissipation
Pd max
No heat sink
2
Thermal resistance between
junction and case
θj-c
Operating temperature
Topr
–20 to +80
°C
Storage temperature
Tstg
–40 to +150
°C
Ratings
Unit
4.7
W
°C/W
Operating Conditions at Ta = 25 °C
Parameter
Symbol
VIN1
Input voltage
Conditions
11.5 to 20
V
VIN2
6.2 to 20
V
Output current 1
IO1
10 to 360
mA
Output current 2
IO2
10 to 420
mA
Output current 3
IO3
10 to 420
mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
92895HA (II) No.5197-1/5
LA5612
Operating Characteristics at Ta = 25 °C, See specified Test Circuit.
Parameter
Symbol
Conditions
min
typ
[No-load mode] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO1 to IO3 = 0 mA
IIN1
7
Quiescent current
IIN2
8
[Regulator 1] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO1 = 300 mA
Output voltage 1
VO1
13.7
14.5
Dropout voltage
VDROP1
0.5
Line regulation
nVOLN1
16.5 V % VIN1 % 20.5 V
Load regulation
nVOLD1
10mA % IO1 % 300 mA
Output inflow current
IO1 IN
22 V applied to pin VO1, no-load mode
Peak output current
IOP1
360
Output short-circuit current
IOSC1
45
Ripple rejection
Rrej1
50
Output low-level voltage
VO1 OFF
VEN1 = 1 V, when VO1 is off
Output voltage/temperature
nVO1/nTa
±0.5
coefficient
[Regulator 2] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO2 = 350 mA
Output voltage 2
VO2
4.80
5.05
Dropout voltage
VDROP2
0.5
Line regulation
nVOLN2
6 V % VIN2 % 7.2 V
Load regulation
nVOLD2
100 mA % IO2 % 350 mA
Peak output current
IOP2
420
Output short-circuit current
IOSC2
65
Ripple rejection
Rrej2
50
Output low-level voltage
VO2 OFF
VEN2 = 1 V, when VO2 is off
Output voltage/temperature
nVO2/nTa
±0.5
coefficient
[Regulator 3] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO3 = 350 mA
Output voltage 3
VO3
4.80
5.05
Dropout voltage
VDROP3
0.5
Line regulation
nVOLN3
6 V % VIN2 % 7.2 V
Load regulation
nVOLD3
100 mA % IO3 % 350 mA
Peak output current
IOP3
420
Output short-circuit current
IOSC3
65
Ripple rejection
Rrej3
50
Output low-level voltage
VO3 OFF
VEN2 = 1 V, when VO3 is off
Output voltage/temperature
nVO3/nTa
±0.5
coefficient
[Output on/off control] VIN1 = 16.5 V, VIN2 = 6.6 V
VEN1 H
VO1: on, VEN1 < 22 V
Output on control voltage
3.0
VEN2 H
VO2, VO3: on, VEN2 < 22 V
VEN1 L
VO1: off
Output off control voltage
VEN2 L
VO2, VO3: off
[Amplifier A] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V
Input offset voltage
VIOA
Input bias current
IBA
Output current (source)
IOA SOURCE VINA+ = 1 V, VINA– = 0 V
10
Output current (sink)
IOA SINK
VINA+ = 0 V, VINA– = 1 V
10
[Amplifier B] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V
Output current (source)
IOB SOURCE
10
max
Unit
14
16
mA
mA
15.2
1.0
140
150
500
V
V
mV
mV
µA
mA
mA
dB
V
180
0.2
mV/ °C
5.30
1.0
20
100
210
0.2
V
V
mV
mV
mA
mA
dB
V
mV/ °C
5.30
1.0
20
100
210
0.2
V
V
mV
mV
mA
mA
dB
V
mV/ °C
VIN1
V
1.0
V
±7
250
mV
nA
mA
mA
mA
No.5197 - 2/5
LA5612
Allowable power dissipation, Pd max — W
Pd max — Ta
Infinite heat sink
Aluminum heat sink
mounting conditions
Tightening torque: 4 kg .cm
With plain washer and
silicone grease applied
Note 1
No heat sink
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
or
its equivalent
Pin Functions
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Symbol
VIN1
VO1
EN1
VINA(+)
VINA(–)
VOA
GND
VOB
VINB(–)
EN2
VO3
VO2
VIN2
Function
High voltage input.
14.5 V/300 mA regulator, with reverse current prevention.
Regulator 1 on/off control. High active.
Amplifier A noninverting input.
Amplifier A inverting input.
Amplifier A output.
Substrate of the LA5612 (minimum potential).
Amplifier B output (5 V regulator supported by external NPN transistor).
Amplifier B inverting input (5 V regulator supported by external NPN transistor).
Regulator 2 and regulator 3 on/off control. High active.
5.05 V/350 mA regulator.
5.05 V/350 mA regulator.
Low-voltage input.
No.5197 - 3/5
LA5612
Function Table
(V: built in, ×: not built in)
Circuit block
Function
VO1
V O2
VO3
AMP A
AMP B
Input line
VIN1
VIN1
VIN2
VIN2
VIN1
Current limit
V
V
V
×
×
Thermal limit
V
V
V
×
×
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 VIN1 and VIN2. Do not use the LA5612 with voltage applied to only one of these pins.
(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 ^ 4 V, VIN2 ^ 4 V)
EN1,EN2
VO1, VO2, VO3
L or open
L
H
H
(1) ‘‘H’’ for EN denotes high level; ‘‘L’’ denotes low level or open.
(2) ‘‘H’’ for VO denotes output ON voltage; ‘‘L’’ denotes output OFF voltage.
(3) Each output voltage corresponds to each EN and is controlled independently.
(EN1 is coupled with VO1, and EN2 with VO2 and VO3.)
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.
Allowable power dissipation, Pd — W
Thermal Shutdown Characteristics
Typical Characteristics
Ambient temperature, Ta — °C
No.5197 - 4/5
LA5612
Equivalent Circuit Block Diagram and Sample Application Circuit
Start-up
Thermal
shutdown
detection
Reverse current
prevention
External Tr
5 V output
Application Notes
(1)
(2)
(3)
(4)
The input line for AMP A and AMP B is shared with VIN1.
AMP A and AMP B are on in normal use.
The output voltage is 5 V when an external NPN transistor has been added.
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
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