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Evaluation Board User Guide
UG-336
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
Evaluating the ADP199 High-Side Load Switch
FEATURES
Ultrasmall, 0.8 mm × 0.8 mm, 4-ball, 0.4 mm pitch WLCSP
Low RDS
Low input voltage range of 0.9 V to 3.6 V
500 mA continuous operating current
Operating temperature range: T
of 40 mΩ
ON
= −40°C to +85°C
J
EVALUATION BOARD
GENERAL DESCRIPTION
The ADP199 evaluation board (ADP199CB-EVALZ) is
used to demonstrate the functionality of the ADP199
high-side load switch.
Simple device measurements such as V
(RDS
), ground current, and shutdown current can be dem-
ON
onstrated with only a single voltage source, a voltage meter, a
current meter, and a load resistor.
Complete information about the ADP199 high-side load
switch is available in the ADP199 data sheet, which should
be consulted when using the ADP199CB-EVALZ.
IN
to V
resistance
OUT
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Figure 1.
Rev. 0 | Page 1 of 8
10294-001
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UG-336 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Evaluation Board .............................................................................. 1
Revision History ............................................................................... 2
Evaluation Board Schematic and Hardware ................................. 3
VIN to V
Resistance (RDSON) Measurements ........................... 4
OUT
REVISION HISTORY
11/11—Revision 0: Initial Version
Ground Current Measurements ......................................................5
Ground Current Consumption ...................................................5
Shutdown Current Measurements ..................................................6
Ordering Information .......................................................................7
Bill of Materials ..............................................................................7
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Evaluation Board User Guide UG-336
EVALUATION BOARD SCHEMATIC AND HARDWARE
V
IN
+
C1
J2
VIN
EN
VOUT
U1
GND
V
OUT
+
C2
10294-002
Figure 2. Evaluation Board Schematic
Table 1. Evaluation Board Hardware Components
Component Function Description
U1 Load switch ADP199ACBZ-R7 high-side load switch.
C1 Input capacitor Input bypass capacitor, 0.1 μF. Optional to improve transient performance. Connect C1 from VIN to GND.
C2 Output capacitor Output capacitor, 0.1 μF. Optional to improve transient performance. Connect C2 from VOUT to GND.
J2 Jumper Jumper. Connects EN to VIN for automatic startup.
Rev. 0 | Page 3 of 8
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UG-336 Evaluation Board User Guide
VIN TO V
RDS
is defined as the input-to-output voltage differential
ON
RESISTANCE (RDSON) MEASUREMENTS
OUT
divided by load current. The voltage meter reading divided
by the load current value gives the equivalent RDS
RDS
can be measured using the configuration shown in
ON
value.
ON
Figure 4. For more accurate measurements, a second voltage
meter can be used to monitor the input voltage across the input
capacitor. The input supply voltage may need to be adjusted to
account for IR drops, especially if large load currents are used.
Figure 3 shows a typical curve of RDS
measurements with
ON
different load currents.
Follow these steps to connect the evaluation board to a voltage
source and voltage meter:
1. Connect the negative terminal (−) of the voltage source
to the GND pad on the evaluation board.
2. Connect the positive terminal (+) of the voltage source
to the VIN pad on the evaluation board.
3. Connect a load between the VOUT pad and the GND pad
on the evaluation board.
4. Connect the negative terminal (−) of the voltage meter to
the VOUT pad on the evaluation board.
5. Connect the positive terminal (+) of the voltage meter
to the VIN pad on the evaluation board.
The voltage source can now be turned on. If J2 is inserted
(connecting EN to VIN for automatic startup), the switch
powers up.
0.10
5mA
10mA
0.09
50mA
100mA
0.08
200mA
500mA
0.07
0.06
(Ω)
0.05
ON
RDS
0.04
0.03
0.02
0.01
0
0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
VIN (V)
Figure 3. RDS
vs. Input Voltage (VIN)
ON
10294-003
VOLTMETER
1.99711
+
–
Figure 4. RDS
Measurement
ON
LOAD
VOLTAGE
SOURCE
–
+
10294-004
Rev. 0 | Page 4 of 8
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Evaluation Board User Guide UG-336
GROUND CURRENT MEASUREMENTS
Figure 6 shows how the evaluation board can be connected to a
voltage source and a current meter (ammeter) for ground current
measurements. A resistor can be used as the load for the switch.
Ensure that the resistor has a power rating 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 used can supply enough current
for the expected load levels. If voltage meters are connected at
the input or output terminals, subtract the current resulting from
the shunt resistance of the voltage meter for accurate ground
current measurement.
Follow these steps to connect the evaluation board to a voltage
source and current meter:
1. Connect the positive terminal (+) of the voltage source to
the VIN pad on the evaluation board.
2. Connect the positive terminal (+) of the current meter to
the GND pad on the evaluation board.
3. Connect the negative terminal (−) of the current meter to
the negative terminal (−) of the voltage source.
4. Connect a load between the VOUT pad on the evaluation
board and the negative terminal (−) of the voltage source.
The voltage source can now be turned on. If J2 is inserted
(connecting EN to VIN for automatic startup), the switch
powers up.
GROUND CURRENT CONSUMPTION
Ground current measurements can determine how much
current the internal circuits of the switch consume while
the circuits perform the load switch function. To be efficient,
the load switch must consume as little current as possible.
Figure 5 shows the typical ground current consumption for
various load levels.
50
5mA
10mA
45
50mA
100mA
200mA
40
500mA
35
30
25
20
15
GROUND CURRENT ( µA)
10
5
0
0.8 1.2 1. 6 2.0 2.4 2.8 3.2 3. 6
VIN (V)
Figure 5. Ground Current vs. Input Voltage (V
)
IN
10294-005
AMMETER
+
LOAD
Figure 6. Ground Current Measurement
0.00112
–
VOLTAGE
SOURCE
–
+
10294-006
Rev. 0 | Page 5 of 8
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UG-336 Evaluation Board User Guide
(
SHUTDOWN CURRENT MEASUREMENTS
Figure 8 shows how the evaluation board can be connected to
a voltage source and a current meter (ammeter) for shutdown
current measurements. The current meter can also be connected
to the VIN pad to measure the ground current, which is equal
to the shutdown current when EN is tied to ground. Figure 7
shows the typical shutdown current consumption for various
input voltages.
Follow these steps to connect the evaluation board to a voltage
source and current meter:
1. Connect the positive terminal (+) of the voltage source to
the positive terminal (+) of the current meter.
2. Connect the negative terminal (−) of the voltage source to
the GND pad and the EN pad on the evaluation board.
3. Connect the negative terminal (−) of the current meter to
the VIN pad on the evaluation board.
The voltage source can now be turned on.
VOLTAGE
SOURCE
AMMETE R
–
+
0.00112
+
–
1
0.90V
1.80V
0.95V
2.20V
1.00V
2.60V
1.20V
3.20V
1.50V
µA)
0.1
SHUTDOWN CURRENT
GND
I
0.01
–40 –20 0 20 40 60 80 100
3.60V
TEMPERATURE (°C)
Figure 7. Shutdown Current vs. Temperature and Input Voltage (V
10294-007
)
IN
10294-008
Figure 8. Shutdown Current Measurement
Rev. 0 | Page 6 of 8
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Evaluation Board User Guide UG-336
ORDERING INFORMATION
BILL OF MATERIALS
Table 2.
Qty Reference Designator Description Manufacturer/Vendor Part No.
2 C1, C2 Capacitor, MLCC, 0.1 μF, 10 V, 0402, X5R Murata or equivalent GRM155R61A104KA01D
1 J2 Header, single, STR, two pins Digi-Key Corp. S1012E-02-ND
1 U1 IC, load switch Analog Devices, Inc. ADP199ACBZ-R7
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UG-336 Evaluation Board User Guide
NOTES
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.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the pers onal jurisdiction and venu e of such courts. The United Nations Conventi on on Contracts for the Internation al Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
©2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG10294-0-11/11(0)
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