Diodes AP4313KTR Schematic [ru]
AP4313
Document number: DS37565 Rev.2 - 2
1 of 9
www.diodes.com
October 2014
© Diodes Incorporated
AP4313
A Product Line of
Diodes Incorporated
Description
The AP4313 is a highly integrated solution for a constant
voltage/constant current mode SMPS application.
The AP4313 contains one 1.21V voltage reference with 1%
accuracy, one current sensing circuit and two operational amplifiers.
Combining the voltage reference with one operational amplifier makes
AP4313 an ideal voltage controller for use in adapters and battery
chargers. The other low voltage reference combined with the other
operational amplifier makes it an ideal current limiter for output low
side current sensing.
The AP4313 is available in SOT26 package.
Features
Constant Voltage and Constant Current Control
Precision Internal Voltage Reference
Few External Components
Easy Compensation
Low Supply Current: 0.5mA
Operating Temperature Range: -40 to +105oC
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
1
2
3 4
5
Pin 1 Mark
6
V
CTRL
GND
V
OUT
V
CC
V
SENSE
I
CTRL
SOT26
Applications
Adapters
Battery Chargers
1.210V
V
CC
V
OUT
GND
V
SENSE
I
CTRL
Rss
R4
To primary
R2
R1
V
OUT
+
V
OUT
-
Load
C1
R3
C3
R5
R6
500
V
CTRL
AP4313
+
+
I
L
121R
RR
VV
REFOUT
SS
SENSE
R
V
itCurrentLim
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
(V) (A)
Typical Application 1
AP4313
Document number: DS37565 Rev.2 - 2
2 of 9
www.diodes.com
October 2014
© Diodes Incorporated
AP4313
A Product Line of
Diodes Incorporated
1.210V
V
CC
V
OUT
GND
V
SENSE
I
CTRL
Rss
R4
To primary
R2
R1
V
OUT
+
V
OUT
-
Load
R3
C3
R5
R6
500
V
CTRL
AP4313
+
+
I
L
C1
1.210V
V
CC
V
OUT
GND
V
SENSE
I
CTRL
Rss
R4
To primary
R2
R1
V
OUT
+
V
OUT
-
Load
C1
R3
C3
R5
R6
500
V
CTRL
AP4313
+
+
I
L
)(
1
21
)]([
SSLSSLREF
UT
O
RI
R
RR
RIVV
SS
SENSE
R
V
itCurrentLim
)(
1
21
SSLREFOUT
RI
R
RR
VV
SSREFSENSE
REFSENSE
RVV
VV
itCurrentLim
Typical Applications Circuit (Cont.)
(V) (A)
(V) (A)
Typical Application 2
Typical Application 3
AP4313
Document number: DS37565 Rev.2 - 2
3 of 9
www.diodes.com
October 2014
© Diodes Incorporated
AP4313
A Product Line of
Diodes Incorporated
Pin Number
Pin Name
Function
1
V
CTRL
Input pin of the voltage control loop
2
GND
Ground
3
V
OUT
Output pin. Sinking current only
4
I
CTRL
Input pin of the current control loop
5
V
SENSE
Input pin of the current control loop
6
VCC
Power supply
1
2
3
4 5
6
V
CTRL
V
OUT
I
CTRL
V
CC
V
SENSE
GND
1.210V
200mV
Pin Descriptions
Functional Block Diagram
Loading...