ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide UG-717 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 Setting Up the Evaluation Boards for the ADP165/ADP166 FEATURES ADP165/ADP166 EVALUATION BOARDS Input voltage range: 2.2 V to 5.5 V Output current range: 0 mA to 150 mA Output voltage accuracy: 1% Operating temperature range: -40C to +125C GENERAL DESCRIPTION Simple device measurements such as line and load regulation, dropout voltage, and ground current can be demonstrated with only a single voltage supply, a voltmeter, an ammeter, and load resistors. 12433-001 The ADP165/ADP166 evaluation boards are used to demonstrate the functionality of the ADP165/ADP166 series of linear regulators. Figure 1. TSOT Printed Circuit Board (PCB) Layout 12433-002 Complete specifications for the ADP165/ADP166 linear regulators are available in the ADP165/ADP166 data sheet available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation boards. 12433-003 Figure 2. WLCSP PCB Layout Figure 3. LFCSP PCB Layout PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 9 UG-717 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Dropout Voltage Measurements..................................................5 General Description ......................................................................... 1 Ground Current Measurements ..................................................6 ADP165/ADP166 Evaluation Boards ............................................ 1 Ground Current Consumption ...................................................7 Revision History ............................................................................... 2 Ordering Information .......................................................................8 Evaluation Board Hardware ............................................................ 3 Bill of Materials ..............................................................................8 Evaluation Board Configurations .............................................. 3 ADP165Z-REDYKIT Contents ...................................................8 Output Voltage Measurements ................................................... 4 ADP166Z-REDYKIT Contents ...................................................9 Line Regulation Measurements .................................................. 5 Load Regulation Measurements ................................................. 5 REVISION HISTORY 2/15--Rev. 0 to Rev. A Changes to General Description Section ...................................... 1 Changes to Figure 8 .......................................................................... 4 Added ADP165Z-REDYKIT Contents Section and Table 3; Renumbered Sequentially................................................................ 8 Added ADP166Z-REDYKIT Contents Section and Table 4 ...... 9 9/14--Revision 0: Initial Version Rev. A | Page 2 of 9 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide UG-717 EVALUATION BOARD HARDWARE The ADP165/ADP166 evaluation boards come supplied with different components, depending on the version ordered. Components common to all versions are C1, C2, and J1. Resistors R1 and R2 and Jumper J2 are used for the adjustable output ADP165/ADP166, the 6-lead LFCSP and 5-lead TSOT options. Figure 4, Figure 5, and Figure 6 show the schematics of these evaluation board configurations. Table 1 describes the components. C1 R2 Figure 4. Evaluation Board Schematic, TSOT VIN VIN VOUT VOUT C2 C1 EN 12433-005 U1 J1 GND Figure 5. Evaluation Board Schematic, WLCSP R1 VIN VOUT = 1.0 V(1 + R1/R2) + (ADJI-BIAS)(R1) C1 5 6 EN NC VIN GND U1 NC/ ADJ VOUT 3 R2 2 J2 1 VOUT C2 12433-006 4 Calculate the output voltage using the following equation: Note that when the device is in shutdown, the output turns off, and the divider current is zero. J2 R1 NC/ ADJ 4 3 EN J1 To minimize quiescent current in the ADP165/ADP166, use high values of resistance for R1 and R2. Using a value of 1 M for R2 keeps the total, no load quiescent current below 2 A. However, high values of resistance introduce a small output voltage error. For example, assuming that R1 and R2 are 1 M, the output voltage is 2 V. Taking into account the nominal ADJ pin bias current of 10 nA, the output voltage error is 0.25%. C2 2 GND J1 The adjustable ADP165/ADP166 has an output voltage range of 1.2 V to 4.2 V. The output voltage is set by the ratio of two external resistors, as shown in Figure 4 and Figure 6. The device servos the output to maintain the voltage at the ADJ pin at 1.0 V referenced to ground. The current in R1 is then equal to 1.0 V/R2, and the current in R1 is the current in R2 plus the ADJ pin bias current. The ADJ pin bias current, 10 nA at 25C, flows through R1 into the ADJ pin. The value of R1 must be less than 200 k to minimize errors in the output voltage caused by the ADJ pin bias current. For example, when R1 and R2 each equal 200 k, the output voltage is 2.0 V. The output voltage error introduced by the ADJ pin bias current is 1 mV or 0.05%. VOUT VOUT 5 U1 1 VIN 12433-004 EVALUATION BOARD CONFIGURATIONS Figure 6. Evaluation Board Schematic, LFCSP Table 1. Evaluation Board Hardware Components Component U1 C11 C21 J1 J2 R1, R2 Description ADP165/ADP166 low dropout linear regulator Input bypass capacitor, 1 F, 0603 size Output capacitor, 1 F, 0603 size Jumper (connects EN to VIN for automatic startup) Jumper (connects VOUT to the resistor divider for the adjustable ADP165/ADP166) Resistor divider to set ADP165/ADP166 output voltage 1 The ADP165/ADP166 evaluation boards require only one input bypass capacitor and one output capacitor for stable operation. Rev. A | Page 3 of 9 UG-717 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide OUTPUT VOLTAGE MEASUREMENTS VOLTAGE SOURCE VOLTMETER 3.29999 + + - - 12433-007 LOAD Figure 7. Output Voltage Measurement Setup, TSOT VOLTAGE SOURCE VOLTMETER 3.29999 + - + - 12433-008 LOAD Figure 8. Output Voltage Measurement Setup, WLCSP Figure 7 and Figure 8 show how the evaluation board can be connected to a voltage source and a voltmeter for basic output voltage accuracy measurements. Note that the LFCSP measurement setup is the same as the TSOT setup. 3. A resistor can be used as the load for the regulator. Ensure that the resistor has a power rating that is adequate to handle the power expected to dissipate across it. An electronic load can also be used as an alternative. Ensure that the voltage source can supply enough current for the expected load levels. 5. Follow these steps to connect the evaluation board to a voltage source and voltmeter: If the load current is large, the user must connect the voltmeter as close as possible to the output capacitor to reduce the effects of IR drops. 1. 2. Connect the negative terminal (-) of the voltage source to one of the GND pads on the evaluation board. Connect the positive terminal (+) of the voltage source to the VIN pad on the evaluation board. 4. Connect a load between the VOUT pad and one of the GND pads on the evaluation board. Connect the negative terminal (-) of the voltmeter to one of the GND pads on the evaluation board. Connect the positive terminal (+) of the voltmeter to the VOUT pad on the evaluation board. When these steps are completed, the voltage source can be turned on. If J1 is inserted (connecting EN to VIN for automatic startup), the regulator powers up. Rev. A | Page 4 of 9 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide UG-717 3.35 LINE REGULATION MEASUREMENTS 3.34 3.33 3.32 VOUT (V) 3.31 3.30 3.29 3.28 3.27 3.26 3.33 3.25 0.001 0.01 0.1 3.32 3.31 10 100 1000 Figure 10. Output Voltage (VOUT) vs. Load Current (IOUT) at VIN = 3.8 V, VOUT = 3.3 V, TA = 25C 3.30 DROPOUT VOLTAGE MEASUREMENTS 3.29 3.28 3.27 3.26 3.23 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 VIN (V) 5.5 Figure 9. Output Voltage (VOUT) vs. Input Voltage (VIN) at VOUT = 3.3 V, TA = 25C LOAD REGULATION MEASUREMENTS For load regulation measurements, the output of the regulator is monitored while the load is varied. For good load regulation, the output must change as little as possible with varying load. The input voltage must be held constant during load regulation measurement. The load current can be varied from 0 mA to 150 mA. Figure 10 shows the typical load regulation performance of an ADP165 with a fixed 3.3 V output for an input voltage of 3.8 V. For accurate measurements, use a second voltmeter to monitor the input voltage across the input capacitor. The input supply voltage may need adjusting to account for IR drops, especially when using large load currents. Figure 11 shows the typical curve of dropout voltage measurements with different load currents. 0.27 VOUT = 2.0V VOUT = 3.3V 0.24 0.21 0.18 0.15 0.12 0.09 0.06 0.03 0 0.001 0.01 0.1 ILOAD (A) Figure 11. Dropout Voltage vs. Load Currents (ILOAD), VOUT = 2.0 V and 3.3 V, TA = 25C Rev. A | Page 5 of 9 1 12433-011 3.24 12433-009 1A 100A 1mA 10mA 100mA 150mA 3.25 The dropout voltage can be measured using the configurations shown in Figure 7 and Figure 8. Dropout voltage is defined as the input to output voltage differential when the input voltage is set to the nominal output voltage. The ADP165/ADP166 only enter dropout mode for output voltages higher than 2.2 V; for lower voltage outputs, the ADP165/ADP166 shut down. The dropout voltage increases with larger loads. DROPOUT VOLTAGE (V) VOUT (V) 1 ILOAD (mA) 12433-010 For line regulation measurements, the output of the regulator is monitored while its input is varied. For good line regulation, the output must change as little as possible with varying input levels. To ensure that the device is not in dropout mode during line regulation measurement, VIN must be varied between VOUTNOM + 0.4 V (or 2.2 V, whichever is greater) and VINMAX. For example, for an ADP165 with a fixed 3.3 V output, VIN must be varied between 2.7 V and 5.5 V. This measurement can be repeated under different load conditions. Figure 9 shows the typical line regulation performance of an ADP165 with a fixed 3.3 V output. UG-717 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide GROUND CURRENT MEASUREMENTS VOLTAGE SOURCE - + AMMETER 0.00112 + 12433-012 - LOAD Figure 12. Ground Current Measurement Setup, TSOT VOLTAGE SOURCE - + AMMETER 0.00112 + 12433-013 - LOAD Figure 13. Ground Current Measurement Setup, WLCSP Figure 12 and Figure 13 show how the evaluation board can be connected to a voltage source and an ammeter for ground current measurements. Note that the LFCSP measurement setup is the same as the TSOT setup 3. A resistor can be used as the load for the regulator. Ensure that the resistor has a power rating that is adequate to handle the power expected to be dissipated across it. An electronic load can be used as an alternative. Ensure that the voltage source can supply enough current for the expected load levels. When these connection steps are completed, the voltage source can be turned on. If J1 is inserted (connecting EN to VIN for automatic startup), the regulator powers up. 4. Follow these steps to connect the evaluation board to a voltage source and ammeter: 1. 2. Connect the positive terminal (+) of the voltage source to the VIN pad on the evaluation board. Connect the positive terminal (+) of the ammeter to one of the GND pads on the evaluation board. Rev. A | Page 6 of 9 Connect the negative terminal (-) of the ammeter to the negative terminal (-) of the voltage source. Connect a load between the VOUT pad on the evaluation board and the negative terminal (-) of the voltage source. ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide GROUND CURRENT CONSUMPTION UG-717 10 1 NO LOAD 1A 100A 1mA 10mA 100mA 150mA When the device is disabled (EN = GND), the ground current drops to less than 50 nA. 0.1 -50 -25 0 25 50 75 100 125 JUNCTION TEMPERATURE (C) Figure 14. Ground Current vs. Input Voltage (VIN), VOUT = 3.3 V, TA = 25C Rev. A | Page 7 of 9 150 12433-014 Ground current measurements can determine how much current the internal circuits of the regulator consume while the circuits perform the regulation function. To be efficient, the regulator must consume as little current as possible. Typically, the regulator uses the maximum current when supplying its largest load level (150 mA). Figure 14 shows the typical ground current consumption for various load levels at VOUT = 3.3 V and TA = 25C. GROUND CURRENT (A) 100 UG-717 ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide ORDERING INFORMATION BILL OF MATERIALS Table 2. Reference Designator C1, C2 J1, J2 U1 R1, R2 Description Capacitor, MLCC, 1 F, 16 V, 0603, X5R Header, single, STR, two pins IC, low dropout (LDO) regulator Resistor, 0402, 1% tolerance Manufacturer Murata (or equivalent) Sullins Connector Solutions Analog Devices, Inc. Any manufacturer Part No. GRM188R61C105KA93 PEC02SAAN ADP165/ADP166 Depends on manufacturer ADP165Z-REDYKIT CONTENTS Table 3. Quantity 1 1 1 1 1 1 1 1 1 1 1 1 1 Model ADP165CB-EVALZ ADP165CP-EVALZ ADP165UJ-EVALZ ADP165ACPZN-R7 ADP165ACPZN-1.2-R7 ADP165ACPZN-1.8-R7 ADP165ACPZN-3.0-R7 ADP165ACPZN-3.3-R7 ADP165AUJZ-R7 ADP165AUJZ-1.2-R7 ADP165AUJZ-1.8-R7 ADP165AUJZ-2.3-R7 ADP165AUJZ-3.0-R7 Output Voltage (V) 1.8 2.3 3.3 Adjustable 1.2 1.8 3.0 3.3 Adjustable 1.2 1.8 2.3 3.0 Maximum Current (mA) 150 150 150 150 150 150 150 150 150 150 150 150 150 Rev. A | Page 8 of 9 Description Evaluation board Evaluation board Evaluation board 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 5-lead TSOT 5-lead TSOT 5-lead TSOT 5-lead TSOT 5-lead TSOT ADP165Z-REDYKIT/ADP166Z-REDYKIT User Guide UG-717 ADP166Z-REDYKIT CONTENTS Table 4. Quantity 1 1 1 1 1 1 1 1 1 1 1 1 1 Model ADP166CB-EVALZ ADP166CP-EVALZ ADP166UJ-EVALZ ADP166ACPZN-R7 ADP166ACPZN-1.2-R7 ADP166ACPZN-1.8-R7 ADP166ACPZN-3.0-R7 ADP166ACPZN-3.3-R7 ADP166AUJZ-R7 ADP166AUJZ-1.2-R7 ADP166AUJZ-1.8-R7 ADP166AUJZ-2.3-R7 ADP166AUJZ-3.0-R7 Output Voltage (V) 1.8 2.3 3.3 Adjustable 1.2 1.8 3.0 3.3 Adjustable 1.2 1.8 2.3 3.0 Maximum Current (mA) 150 150 150 150 150 150 150 150 150 150 150 150 150 Description Evaluation board Evaluation board Evaluation board 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 6-lead LFCSP 5-lead TSOT 5-lead TSOT 5-lead TSOT 5-lead TSOT 5-lead TSOT ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the "Evaluation Board"), you are agreeing to be bound by the terms and conditions set forth below ("Agreement") unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you ("Customer") and Analog Devices, Inc. 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