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PDF AP65201 Data sheet ( Hoja de datos )
| Número de pieza | AP65201 | |
| Descripción | TSOT26 LIGHT LOAD IMPROVED 2A SYNCH DC/DC BUCK CONVERTER | |
| Fabricantes | Diodes | |
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NOT RECOMMENDED FOR NEW DESIGN
AP65201
TSOT26 LIGHT LOAD IMPROVED 2A SYNCH DC/DC BUCK CONVERTER
Description
The AP65201 is a 500kHz switching frequency internal compensated
synchronous DC/DC buck converter. It has integrated low RDS(ON)
high and low side MOSFETs.
The AP65201 enables continuous load current of up to 2A with
efficiency as high as 97%.
The AP65201 implements an automatic custom light load efficiency
improvement algorithm.
The AP65201 features current mode control operation, which enables
fast transient response times and easy loop stabilization.
The AP65201 simplifies board layout and reduces space
requirements with its high level of integration and minimal need for
external components, making it ideal for distributed power
architectures.
The AP65201 is available in a standard Green TSOT26 package and
is RoHS compliant.
Pin Assignments
Top View
GND 1
SW 2
IN 3
TSOT26
6 BST
5 EN
4 FB
Features
VIN 4.5V to 16V
2A Continuous Output Current, 3A Peak
Efficiency Up to 97%
Automated Light Load Improvement
VOUT Adjustable From 0.8V
500kHz Switching Frequency
Internal Soft-Start
Enable Pin
Overcurrent Protection (OCP) with Hiccup
Thermal Protection
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Gaming Consoles
Flat Screen TV Sets and Monitors
Set-Top Boxes
Distributed Power Systems
Home Audio
Consumer Electronics
Network Systems
FPGA, DSP and ASIC Supplies
Green Electronics
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
AP65201
Document number: DS36109 Rev. 3 - 3
INPUT
VIN
12V
C1
22μF
36
IN BST
2
ON 5
SW
OFF EN AP65201
4
FB
1
GND
C5
1µF L1
4.7μH
R3
75kΩ
R1
40.2kΩ
R2
13kΩ
OUTPUT
VOUT
3.3V
C2
22μF
Figure 1. Typical Application Circuit
1 of 14
www.diodes.com
December 2016
© Diodes Incorporated
1 page  
NOT RECOMMENDED FOR NEW DESIGN
AP65201
Typical Performance Characteristics (@TA = +25°C, VIN = 12V, VOUT = 3.3V, L = 4.7µH, unless otherwise specified.)
VIN=16V
VIN=12V
VIN=6.5V
VIN=16V
VIN=12V
VIN=4.7V
VIN=16V
VIN=12V
VIN=4.7V
VIN=16V
VIN=12V
VIN=4.7V
AP65201
Document number: DS36109 Rev. 3 - 3
5 of 14
www.diodes.com
December 2016
© Diodes Incorporated
5 Page 
NOT RECOMMENDED FOR NEW DESIGN
AP65201
Application Information (Cont.)
PC Board Layout
This is a high switching frequency converter. Hence, attention must be paid to the switching currents interference in the layout. Switching current
from one power device to another can generate voltage transients across the impedances of the interconnecting bond wires and circuit traces.
These interconnecting impedances should be minimized by using wide, short printed circuit traces.
Figure 3—PC Board Layout
External Bootstrap Diode
It is recommended that an external bootstrap diode be added when the input voltage is no greater than 5V or the 5V rail is available in the
system. This helps to improve the efficiency of the regulator. This solution is also applicable for D > 65%. The bootstrap diode can be a low cost
one such as BAT54 or a Schottky that has a low VF.
BST
AP65201
5V
BOOST
DIODE
10nF
SW
Figure 4—External Bootstrap Compensation Components
Recommended Diodes Incorporated:
Part Number
Voltage/Current
Rating
B130
30V, 1A
SK13
30V, 1A
Vendor
Diodes Incorporated
Diodes Incorporated
AP65201
Document number: DS36109 Rev. 3 - 3
11 of 14
www.diodes.com
December 2016
© Diodes Incorporated
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AP65201.PDF ] | |
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