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PDF IK3051 Data sheet ( Hoja de datos )
| Número de pieza | IK3051 | |
| Descripción | Constant Voltage and Constant Current Controller | |
| Fabricantes | IK Semicon | |
| Logotipo |  |
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TECHNICAL DATA
Constant Voltage and Constant Current Controller IK3051
for Adaptors and Battery Chargers
Description
IK3051 is a highly integrated solution for SMPS
applications requiring constant voltage and constant
current mode.
IK3051 integrates one voltage reference, two
operational amplifiers (with ORed outputs – common
collectors), and a current sensing circuit.
The voltage reference combined with one operational
amplifier makes it an ideal voltage controller, and the
other low voltage reference combined with the other
www.DaotpaeShreaetti4oUn.caolmamplifier makes it an ideal current limiter for
output low side current sensing.
The current threshold is fixed and precise.
The only external components are:
• A resistor bridge to be connected to the output of the
power supply (adapter, battery charger) to set the
voltage regulation by dividing the desired output
voltage to match the internal voltage reference value.
• A sense resistor having a value and allowable
dissipation power which need to be chosen
according to the internal voltage threshold.
• Optional compensation components (R and C).
IK3051, is ideal for smallest package available, is ideal
for space shrinked applications such as adapters and
battery chargers.
Features
• CONSTANT VOLTAGE AND CONSTANT CURRENT
CONTROL
• LOW VOLTAGE OPERATION
• PRECISION INTERNAL COMPONENT COUNT
• CURRENT SINK OUTPUT STAGE
• EASY COMPENSATION
• LOW AC MAINS VOLTAGE REJECTION
Pin Definitions and Functions
SOT23-6 Pinout
Name Pin#
Type
Vcc 6 Power Supply
GND
2 Power Supply
Vctrl
1 Analog Input
Ictrl 4 Analog Input
Out 3 Current Sink Output
Vsense
5 Analog Input
Function
Positive Power Supply Line
Ground Line. 0V Reference For All Voltages
Input Pin of the Voltage Control Loop
Input Pin of the Current Control Loop
Output Pin. Sinking Current Only
Input Pin of the Current Control Loop
Rev. 00
1 page  
PACKAGE DIMENSION
SOT-23-6
IK3051
www.DataSheet4U.com
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
θ
Dimensions In Millimeters
Min
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.800
0.300
0°
0.950TYP
0.600REF
Max
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
2.000
0.600
8°
Dimensions In Inches
Min
0.041
0.000
0.041
0.012
0.004
0.111
0.059
0.104
0.071
0.012
0°
0.037TYP
0.024REF
Max
0.049
0.004
0.045
0.020
0.008
0.119
0.067
0.116
0.079
0.024
8°
Rev. 00
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet IK3051.PDF ] | |
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