LA5611 [SANYO]
Multifunctional Voltage Regulator for TVs and VCRs; 多功能稳压器用于电视机和录像机
| 型号： | LA5611 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | Multifunctional Voltage Regulator for TVs and VCRs |
| 文件： | 总5页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number: EN 5196
Monolithic Linear IC
LA5611
Multifunctional Voltage Regulator
for TVs and VCRs
Applications
Package Dimensions
unit : mm
.
Audiovisual equipment, VCRs and TVs
3107-SIP13H
[LA5611]
Features
.
Low saturation type of regulator (ON/OFF function built in)
Control amplifier built in.
Current limit and thermal limit circuits built in
Reverse current prevention provided (VO4)
.
.
.
SANYO : SIP13H
Specfications
Maximum Ratings at Ta = 25 C
°
Parameter
Maximum input voltage
Allowable power dissipation
Symbol
Conditions
Ratings
Unit
V
V
1 max
2 max
22
IN
V
V
1 ^ V
2
V
1
2
IN
IN IN
IN
Pd max
No heat sink
W
Thermal resistance between
junction and case
θj-c
4.7
C/W
°
Operating temperature
Storage temperature
Topr
Tstg
–20 to +80
C
C
°
°
–40 to +150
Operating Conditions at Ta = 25 C
°
Parameter
Input voltage
Symbol
Conditions
Ratings
Unit
V
V
1
11.5 to 20
6.2 to 20
IN
V
2
V
IN
Output current 1
Output current 2
Output current 3
Output current 4
I 1
Within ASO of external Tr
mA
mA
mA
mA
O
I 2
10 to 480
10 to 240
5 to 48
O
I 3
O
I 4
O
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
92895HA (II) No.5196-1/5
LA5611
Operating Characteristics at Ta = 25 C, See specified Test Circuit.
°
Parameter
Symbol
Conditions
min
8.5
typ
max
Unit
[No-load mode] V
= low, V 1 = 14 V, V 2 = 6.6 V, I 1 to I 4 = 0 mA
IN IN O O
EN
I
I
1
2
8
16
4
mA
mA
IN
Quiescent current
2
IN
[Regulator 1] V
EN
= low, V 1 = 14 V, V 2 = 6.6 V, I 1 = 500 mA, with specified extenal transistor
IN IN
O
Output voltage 1
Dropout voltage
V 1
O
9.0
0.8
9.5
1.6
V
V
V
1
DROP
Line regulation
nV
nV
1
1
12 V % V 1 % 16 V
IN
0.1 A % I 1 % 1 A
O
140
150
mV
mV
dB
V
OLN
Load regulation
OLD
Ripple rejection
Rrej1
V 1 OFF
50
Output low-level voltage
Control output current
0.2
O
I
1
10
mA
CONT
Output voltage/temperature
coefficient
nV 1/nTa
±1
mV/ C
°
O
[Regulator 2] V
EN
= low, V 1 = 14 V, V 2 = 6.6 V, I 2 = 400 mA
IN IN
O
Output voltage 2
Dropout voltage
Line regulation
V 2
O
4.80
5.05
0.5
5.30
1.0
20
V
V
V
2
DROP
nV
nV
2
2
6 V % V 2 % 7.2 V
IN
mV
mV
mA
mA
dB
V
OLN
OLD
Load regulation
Peak output current
0.1 A % I 2 % 0.4 A
100
O
I
2
480
OP
Output short-circuit current
Ripple rejection
I
2
90
50
240
0.2
OSC
Rrej2
Output low-level voltage
V 2 OFF
O
Output voltage/temperature
coefficient
nV 2/nTa
±0.5
mV/
C
C
C
°
O
[Regulator 3] V
EN
= high, V 1 = 14 V, V 2 = 6.6 V, I 3 = 200 mA
IN IN
O
Output voltage 3
Dropout voltage
Line regulation
V 3
O
4.80
240
5.05
0.5
5.30
1.0
20
V
V
V
3
DROP
nV
nV
3
3
6 V % V 2 % 7.2 V
IN
10 mA % I 3 % 200 mA
mV
mV
mA
mA
dB
OLN
Load regulation
Peak output current
100
OLD
O
I
3
OP
Output short-circuit current
Ripple rejection
I
3
40
50
120
OSC
Rrej3
Output voltage/temperature
coefficient
nV 3/nTa
±0.5
mV/
°
O
[Regulator 4] V
EN
= high, V 1 = 14 V, V 2 = 6.6 V, I 4 = 40 mA
IN IN
O
Output voltage 4
Dropout voltage
Line regulation
V 4
O
5.4
40
5.7
3.8
6.0
5.0
40
V
V
V
4
DROP
nV
nV
4
4
12 V % V 1 % 16 V
IN
10 mA % I 4 % 40 mA
mV
mV
mA
mA
dB
OLN
OLD
Load regulation
Peak output current
65
O
I
4
OP
Output short-circuit current
Ripple rejection
I
4
70
50
OSC
Rrej4
Output voltage/temperature
coefficient
nV 4/nTa
±1
mV/
°
O
[Output on/off control] V 1 = 14 V, V 2 = 6.6 V
IN
IN
V
Output on control voltage
V 1, V 2: on
1.0
V
V
ENL
ENH
O
O
Output off control voltage
V
V 1, V 2: off
3.0
10
V 1
IN
O
O
[Control Amplifier] V 1 = 14 V, V 2 = 6.6 V
IN
IN
Control output current
I
2
mA
CONT
Resistance ratio
K
K
= R4/R3, Vref = 1.28 V typ
9.94
R
R
No.5196 - 2/5
LA5611
Pd max — Ta
Note 1
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
Phase
compensation
or
its equivalent
Pin Functions
No.
1
Symbol
Function
5.05 V/240 mA regulator, with current limit, thermal shutdown.
Regulator 1 and regulator 2 on/off control. Low active.
Substrate of the LA5611 (minimum potential).
V 3
O
EN
2
3
GND
4
V 2
5.05 V/480 mA regulator, with on/off, current limit, thermal shutdown.
Low voltage input.
O
5
V
2
IN
V 4
6
5.7 V/40 mA regulator with reverse current prevention.
O
V 1 adjustment pin. Resistance between pin 7 and ground → V 1 up.
O
O
7
8
9
ADJ2
Resistance between pin 7 and pin 8 → V 1 down
O
V 1
O
Output voltage sensor of 9.0 V regulator
Base control of external NPN transistor. I
CONT
the internal thermal shutdown of this regulator.
1 = 10 mA, with on/off, thermal shutdown coupled with
CONT1
ADJ1
V
1 adjustment pin. Resistance between pin 10 and ground → V 1 up.
IN
IN
10
Resistance between pin 13 and pin 10 → V 1 down
IN
11
12
13
PC
Phase correction pin of switching regulator control amplifier.
Drive output of switching regulator control amplifier.
High voltage input.
CONT2
V
1
IN
No.5196 - 3/5
LA5611
Function Table
(V: built in, ×: not built in)
Circuit block V 1
V 2
V 3
V 4
Control
amplifier
O
O
O
O
Function
Input line
V
1
V
2
V
2
V
1
V
1
IN
IN
IN
IN
IN
Current limit
Thermal limit
On/off control
×
V
V
V
V
V
×
V
×
×
V
V
×
×
×
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
V 1, V 2
O O
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
Ambient temperature, Ta —
C
°
No.5196 - 4/5
LA5611
Equivalent Circuit Block Diagram and Sample Application Circuit
Switching
regulator
control
Thermal
Start-up
Shutdown
detection
amplifier
Error
amplifier
Reverse
current
prevention
Phase
compensation
Converter transformer
Switching
regulator
External Tr
Photocoupler
Application Notes
(1) Depending on the type, load current and connection position (distance from the LA5611) of the external NPN transistor, the
capacitor C7 and resistance R6 is necessary for preventing oscillation.
(2) C1 to C6 are bypass capacitors for preventing oscillation: as such, they must be positioned as close to the LA5611 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.5196 - 5/5
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