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PDF AP4312Q Data sheet ( Hoja de datos )

Número de pieza AP4312Q
Descripción CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
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AP4312Q
CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER
Description
AP4312Q is an Automotive Grade product that is AEC-Q100 grade 1
qualified. It is a highly integrated solution for the constant
voltage/constant current mode SMPS application and linear DC/DC
regulator (used in Automotive application).
Pin Assignments
(Top View)
Pin 1 Mark
The AP4312Q contains one 1.21V voltage reference, one low voltage
reference used in current sensing circuit and two operational
amplifiers. The 1.21V voltage reference, combined with one
operational amplifier, makes of an ideal voltage controller for use in
adapters and battery chargers. The low voltage reference, combined
with another operational amplifier, makes of an ideal current limiter for
output low side current sensing.
VCTRL 1
GND 2
VOUT 3
6 VCC
5 VSENSE
4 ICTRL
The AP4312Q is fully compatible with AP4306 in functionality and
electrical characteristics except its lower reference voltage for current
control loop, thus higher power efficiency in SMPS applications such
as low power charger can be realized with AP4312Q compared to
AP4306.
Applications
SOT26
The AP4312Q is available in SOT26 package.
Adapters
Battery Chargers
Automotive
Features
Constant Voltage and Constant Current Control
Precision Internal Voltage Reference
Low External Component Count
Easy Compensation
Low Supply Current: 180A
Current Control Loop Reference: 70mV
Operating Supply Voltage: 1.7V to 18V
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. GreenDevice (Note 3)
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.
AP4312Q
Document number: DS37444 Rev. 4 - 2
1 of 11
www.diodes.com
November 2015
© Diodes Incorporated

1 page




AP4312Q pdf
AP4312Q
Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol
VCC
Parameter
Power Supply Voltage
Min
Max
Unit
1.7 18 V
Electrical Characteristics (@VCC=5V, TA=+25C, unless otherwise specified.)
Symbol
Parameters
TOTAL CURRENT CONSUMPTION
Total Supply Current Not Including the
ICC Output Sinking Current
VOLTAGE CONTROL LOOP
Gmv
Transconductance of Voltage Control
Loop Op-Amp
(Sink Current Only)
VREF
Voltage Control Loop Reference
IIBV Input Bias Current (VCTRL)
CURRENT CONTROL LOOP
Transconductance of Current Control
Gmi Loop Op-Amp
(Sink Current Only)
VSENSE
Current Control Loop Reference
IIBI Current Out of Pin ICTRL at VSENSE
OUTPUT STAGE
VOL Low Output Voltage Level
Output Short Circuit Current.
IOS Output to VCC. Sink Current Only
Conditions
Min Typ
Max Unit
TA=+25C
-40C <TA<+105C
180
μA
– – 300
TA=+25C
-40C <TA<+105C
TA=+25C
-40C <TA<+105C
TA=+25C
-40C <TA<+105C
1
1.204
1.186
3.5
2.5
1.21
50
100
1.216
1.234
mA/mV
V
nA
TA=+25C
-40C <TA<+105C
TA=+25C
-40C <TA<+105C
TA=+25C
-40C <TA<+105C
1.5
1.5
67.9
66
7
7
70
18
35
72.1
74
mA/mV
mV
μA
TA=+25C, ISINK=2mA
100
mV
-40C <TA<+105C, ISINK=2mA
100
TA=+25C
-40C <TA<+105C
27 50
35
mA
Thermal Impedance
Symbol
θJC
Parameter
Thermal Resistance (Junction to Case)
AP4312Q
Document number: DS37444 Rev. 4 - 2
5 of 11
www.diodes.com
Value
84
Unit
C/W
November 2015
© Diodes Incorporated

5 Page





AP4312Q arduino
AP4312Q
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2015, Diodes Incorporated
www.diodes.com
AP4312Q
Document number: DS37444 Rev. 4 - 2
11 of 11
www.diodes.com
November 2015
© Diodes Incorporated

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