Ordering number : ENN8319
Monolithic Linear IC
LA5160AM
Overview
5V/0.1A Constant-voltage Power Supply
IC with Output ON/OFF Feature
The LA5160AM is a general-purpose constant-voltage power supply IC incorporating the output ON/OFF function,
which offers advantages such as small current drain when output OFF and saves power dissipation of the equipment.
Functions & Features
•
Output voltage ON/OFF control with the strobe pin (active, low)
•
Output current of 100mA obtainable
•
Small current drain when output OFF and optimum for power saving
•
MFP8 package, ensuring easy mounting design
•
Full compliment of protection circuits incorporated (including overcurrent protection, thermal protection)
Specifications
Maximum Ratings
at Ta=25°C
Parameter
Input Voltage
Strobe Pin Voltage
Allowable Power Dissipation 1
Allowable Power Dissipation 2
Operating Temperature
Storage Temperature
Symbol
VIN max
VST max
Pd max1
Pd max2
Topr
Tstg
Independent IC
* Mounted on a specified board
Conditions
Ratings
40
VIN max
0.3
0.8
-40 to +125
-55 to +150
Unit
V
V
W
W
°C
°C
*
Specified board: 114.3mm×76.1mm×1.6mm Board material: glass epoxy
Recommended Operating Conditions
at Ta=-40°C
•
+25°C
•
+125°C
Parameter
Input Voltage
Output Current
Output ON Control Voltage
Output OFF Control Voltage
VIN
IOUT
VSTL
VSTH
Symbol
Conditions
Ratings
7.5 to 20
0 to 100
-0.3 to 0.7
2.0 to VIN
Unit
V
mA
V
V
61005 MH IM B8-8587 No.8319-1/6
LA5160AM
Operation Characteristics
at Ta=-40°C
•
+25°C
•
+125°C, unless otherwise specified,
VIN=10V and IOUT=50mA in the specified test circuit
Parameter
Output Voltage 1
Line Regulation 1
Line Regulation 2
Load Regulation 1
Load Regulation 2
Output Voltage 2
Current Dissipation
Output Noise Voltage
Symbol
VOUT1
∆VOLN1
∆VOLN2
∆VOLD1
∆VOLD2
VOUT2
IQ
VNO
Rrej1
Ripple Rejection
Rrej2
Minimum I/O Voltage Difference
Output ON Control Voltage
Short-Circuit Current
Peak Output Current
Vdrop
VSTL
IOSC
IOP
VIN=35V, relative to GND
300
700
10Hz
≤
f
≤
100kHz
f=120Hz
8V≤VIN
≤19V
IOUT=10mA
f=120Hz
8V
≤
VIN
≤
19V IOUT=50mA
IOUT=50mA
60
7V
≤
VIN
≤
25V, IOUT=20mA
8V
≤
VIN
≤
20V, IOUT=20mA
1mA
≤
IOUT
≤
50mA
1mA
≤
IOUT
≤
20mA
7V
≤
VIN
≤
20V, 1mA
≤
IOUT
≤
50mA
4.75
1.9
90
63
Conditions
min
4.8
Ratings
typ
5.0
3
1
max
5.2
50
25
100
50
5.25
5.0
V
mV
mV
mV
mV
V
mA
µVrms
dB
Unit
50
54
2.0
0.7
dB
V
V
mA
mA
[ VST="H" when the output is OFF ]
Parameter
"L" Output Voltage
Quiescent Current
Output OFF Control Voltage
Symbol
VOOFF
IQOFF
VSTH
VST=5V
Excluding VST=5V and ISTB
2.0
Conditions
min
Ratings
typ
20
35
max
200
40
VIN
mV
µA
V
Unit
Thermal protection
Parameter
Operating Temperature *
Symbol
TTSD
Conditions
min
150
Ratings
typ
180
max
°C
Unit
Note : The value with an asterisk mark for thermal protection is the design target value and no measurement is made.
Pin Assignment
NC
1
8
NC
VIN
2
7
VOUT
LA5160AM
NC
3
6
NC
GND
4
5
STB
Top view
Note: Do not use NC pins (Pin Nos. 1, 3, 6, and 8)
No.8319-2/6
LA5160AM
Package Dimensions
unit : mm
3032D
Equivalent Circuit Block Diagram
VIN
2
ASO protection
Reference voltage
Startup circuit
Error
amplifier
7
VOUT
ON/OFF
control
Thermal protection
GND
4
STB
5
No.8319-3/6
LA5160AM
Specified Test Circuit Diagram
NC
1
8
NC
VOUT
VIN
2
CIN=0.33µF
LA5160AM
7
COUT=0.1µF
t
t
NC
3
4
GND
5
STB
6
NC
Cautions for application
Note : 1) To stabilize the operation, arrange CIN and COUT as near as possible to the IC.
2) COUT must have 0.1µF or more, with less capacitance fluctuation due to temperature, so as to prevent
oscillation at low temperature (such as a tantalum capacitor, etc.).
3) With the STB pin OPEN, the internal bias causes the output in the ON state.
When the STB function is not to be used, connect the STB pin to GND to ensure trouble-free operation of STB.
4) Note that wrong connection, such as connection of VIN to minus and GND to plus, may cause flow of the
overcurrent.
Function Table
VSTB
L
H
VOUT
H
L
VOUT
0
VSTB
0
Equivalent Circuit for ON/OFF Control Input, etc.
50kΩ
5
STB
300Ω
50kΩ
50kΩ
No.8319-4/6
LA5160AM
The values shown in the characteristics diagrams are
all typical values.
No.8319-5/6
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