AR2003FV_15 Datasheet, PDF (1/15 Pages) Diodes Incorporated – ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER

AR2003FV
ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER
Description
The AR2003FV is Active/Synchronous Rectification Controller,
providing output voltage from 4.5V to 21V. Using internal drain-to-
source voltage sensing, the AR2003FV is ideal for Fly-back, LLC-
resonant and other power supply architectures. It has SFB pin that
can eliminate the external feedback resistor when target output
voltage is 5V or 12V.
The small footprint of the AR2003FV makes it ideal for space
constrained applications.
Intelligent features of this IC are the Minimum Off Time (TOFF) and
Minimum on Time (TON), these features blank the noise generated
during the turn on and turn off instances of the power FET. Light load
detection for improved efficiency at light and no load is implemented.
Other features include Under Voltage Lock Out (UVLO), SYNC
feature for CCM operation and low turn off threshold voltage for
improved efficiency.
Pin Assignments
(Top View)
AGND 3
TON
2
NC
1
14 VCC
TOFF/EN 4
13 GND
SFB 5
VD
12 DGATE
OVS 6
11 SYNC
NC 7
8
VS
10 GATE
9
VD
V-DFN3535-14
Features
 Primary-Side or Secondary-side Active/Synchronous
Rectification, Optimized for Systems with Dynamic Voltage
Scaling Capabilities
 Frequency of Operation up to 600kHz
 Suitable for Discontinuous (DCM), Continuous (CCM) and
Critical (CrCM) Conduction Mode
 Minimum On-time and Off-time to Blanking Turn-on/off
Oscillations
 Light Load Detection and Sleep Mode
 Drain Voltage Rating of 200V
 Recommended Operating Voltage from 4.5V up to 21V
 Low Component Count.
 Low Under Voltage Lockout
 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)
Applications
 USB PD Adaptor
 AC-DC Battery Charger
 Fly-back Conversion
 PC Power Supply
 SMPS
 Power Adaptors
 Auxiliary Power Supplies
 PoE Power Devices
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.
AR2003FV
Document number: DS37473 Rev. 3 - 2
1 of 15
www.diodes.com
December 2014
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