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データシート AP4305 PDF ダウンロード


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部品番号 AP4305
部品説明 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
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AP4305 Datasheet, AP4305 PDF,ピン配置, 機能
A Product Line of
Diodes Incorporated
AP4305
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Description
The AP4305 is a highly integrated solution for a constant
voltage/constant current mode SMPS application.
The AP4305 contains one 1.21V voltage reference with0.5%
accuracy, one current sensing circuit and two operational amplifiers.
Combining the voltage reference with one operational amplifier makes
AP4305 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 AP4305 is available in SOT26 package.
Pin Assignments
(Top View)
Pin 1 Mark
VCTRL 1
GND 2
VOUT 3
6 VCC
5 VSENSE
4 ICTRL
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. GreenDevice (Note 3)
Applications
Adapters
Battery Chargers
SOT26
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
AP4305
1.210V
+
VCC
VOUT
R4
VCTRL
To primary R2
R3 C1
+
ICTRL
GND
VSENSE
R6
500
Rss
C3
R5
R1
VOUT+
IL
Load
VOUT-
VOUT
VREF
R1 R2 (V)
R1
AP4305
Document number: DS37513 Rev.2 - 2
CurrentLimit VSENSE (A)
RSS
Typical Application 1
1 of 10
www.diodes.com
September 2014
© Diodes Incorporated

--------------------------------------------
AP4305 pdf, 電子部品, 半導体, ピン配列
Pin Descriptions
Pin Number
1
2
3
4
5
6
A Product Line of
Diodes Incorporated
AP4305
Pin Name
VCTRL
GND
VOUT
ICTRL
VSENSE
VCC
Function
Input pin of the voltage control loop
Ground
Output pin. Sinking current only
Input pin of the current control loop
Input pin of the current control loop
Power supply
Functional Block Diagram
1.210V
200mV
4
ICTRL
VCC
6
3 VOUT
1 VCTRL
2
GND
5
VSENSE
AP4305
Document number: DS37513 Rev.2 - 2
3 of 10
www.diodes.com
September 2014
© Diodes Incorporated





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