320996420AN_861| Application Note
AN-861 APPLICATION NOTE
One Technology Way P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 www.analog.com
ADP1653 Evaluation and Test Methods
by Leo Chou and Adrian Fox
GENERAL DESCRIPTION
This application note presents some methods used in evaluating the ADP1653 white LED driver. The ADP1653 evaluation board, sold by Analog Devices, Inc., is used during the evaluation, but users may choose to design their own evaluation boards. For simplicity, however, all the testing procedures in this application note are based on the Analog Devices ADP1653 evaluation board. The ADP1653 evaluation board is designed specifically for the purpose of evaluation. There are numerous jumpers and test points on the board for users to measure currents, voltages, or probe important nodes. There are also switches on the board that allow users to easily change voltages at certain pins. Note, however, that even though this application note is based on the ADP1653 evaluation board, it is not a user manual that shows how to use the board and the included software. For more details, see the document ADP1653 Flash LED Driver Evaluation Board Manual.
FUNCTIONAL BLOCK DIAGRAM
GND SDA D5 R19 D6 R20
U5 R26 R27 C31 C21 R31 C5 D8 USB_OK C7 R21 C12 C18 C9 C50 R62 R30 C13 R63 C8 R50 C11 C51 C10 C14 R22 R24 R25 REV 0.4.1 U4 JP10 H ADI USB/I2C INTERFACE 0.4 L SCL/CTRL1 H JP11 JP9 U2 C17 C15 C16 R66 R65 C6 R64 H
JP6
L R51 GND VBAT EN STR INT SCL SDA Tx VIC J5 GND J7
VBAT SETT J8 SETF L1 C1 J1
GND
C30 MINI USB
U3
GND OUT D1 D2 SHARP J2 D3 GND D10 HPLED
R6 R5 J4 R4 R3 SETI J6 GND R2
C2 C3 JP3 J3
R1
JP13 5V VIC VBAT 5V
JP12 C19
VBAT 1.8V 3.3V
L L H SDA/CTRL0 TxMASK
06320-001
ADP1653
Figure 1.
Rev. 0 | Page 1 of 20
D7 R23
ANALOG DEVICES
EN
EN
INT
STROBE
STR
GP2
SCL
GP1
C20
INT
GP2
GP1
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