Analog Devices EVAL-ADM8832 Bedienungsanleitung
Evaluation Board for Charge Pump
Regulator for Color TFT Panel
EVAL-ADM8832
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved.
FEATURES
Provides 3 output voltages (5.1 V,15.3 V, −10.2 V) from one
3 V input supply
Power efficiency optimized for use with TFT in mobile
phones
On-board socket for evaluation of multiple ICs
Shutdown line
Options to use external LDO
PACKAGE CONTENTS
ADM8832 evaluation board
ADP8832 evaluation board data sheet
ADM8832 data sheet
GENERAL DESCRIPTION
The ADM8832 evaluation board allows the ADM8832 TFT
color panel charge pump regulator to be quickly and easily
evaluated.
The evaluation board allows all of the input and output functions
to be exercised without the need for external components.
Full details about the part are available in the ADM8832 data
sheet, which should be consulted when using the EVAL-ADM8832.
FUNCTIONAL BLOCK DIAGRAM
07156-001
ADM8832 EVALZ
REV A
ADM8832
SOCKET
GND
LDO_IN GND
–10V
15V
LK8 LK7 LK9
LK1
5V
LK2
LK4
LK5
LK6
LK3
LDO_ON/OFF SCAN/BLANK
SHDN
V
CC
Figure 1.
EVAL-ADM8832
Rev. 0 | Page 2 of 8
TABLE OF CONTENTS
Features .............................................................................................. 1
Package Contents.............................................................................. 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware............................................................ 3
Evaluation Board Connectors and Jumpers................................. 3
Setting Up the ADM8832 Evaluation Board .............................4
Evaluation Board Schematic ............................................................5
Ordering Information.......................................................................6
Bill of Materials..............................................................................6
Ordering Guide .............................................................................6
ESD Caution...................................................................................6
REVISION HISTORY
6/08—Revision 0: Initial Version
EVAL-ADM8832
Rev. 0 | Page 3 of 8
EVALUATION BOARD HARDWARE
The ADM8832 evaluation board contains the following main
components, which can be identified from the block diagram
and the schematic shown in Figure 1 and Figure 2, respectively:
•20-lead LFCSP socket to hold the ADM8832 IC
•9 jumper points to facilitate the connection of external
LDOs, clock sources, and external loads
•1 SMB connector for reliable logic signal connection
•9 test points for signal connection and measurement
•A large patchwork area to facilitate the addition of extra
components to the ADM8832 evaluation board
EVALUATION BOARD CONNECTORS AND JUMPERS
The function of the various connectors and jumpers on the
evaluation board is explained in Table 1, Table 2, and Table 3.
Table 1. Evaluation Board Power Connectors
Connector Function
J1 Supply to ADM8832 (3 V nominal)
J2 External Source (can be regulated by on-board LDO)
Table 2. SMB Connection
Jumper Pin Function Logic Level (High = 3 V, Low = 0 V)
SK1 CLKIN External clock used during blanking mode External
Table 3. Jumpers (Links)
Jumper Description
Default
Status
LK1 Connects to optional external 5 V loads (R1, R2, and R3).
LK1A Connects +5VOUT (Pin 4) to 620 Ω resistor (R1) to GND. (This generates a maximum scanning mode load current
of 8 mA.)
Removed
LK1B Connects +5VOUT (Pin 4) to 1 kΩ resistor (R2) to GND. (This generates a load current of 5 mA.) Removed
LK1C Connects +5VOUT (Pin 4) to 24.9 kΩ resistor (R3) to GND. (This generates a maximum blanking mode load current
of 200 μA.)
Removed
LK2A Connects VOUT (Pin2) to LDO_IN (Pin 3). Inserted
LK2B Connects external source (J2) to LDO_IN (Pin 3). Removed
LK3A Connects CLKIN (Pin 9) to VCC. Removed
LK3B Connects CLKIN (Pin 9) to GND. Removed
LK3C Connects CLKIN (Pin 9) to SK1. Inserted
LK4A Connects −10VOUT (Pin 17) to 100 kΩ resistor (R6) to GND. (This generates a max load current of 100 μA.) Inserted
LK4B Connects −10VOUT (Pin 17) to 1 MΩ resistor (R7) to GND. (This generates a min load current of 10 μA.) Inserted
LK4C Connects −10VOUT (Pin 17) to patchwork area. Inserted
LK5A Connects +15VOUT (Pin 10) to 150 kΩ resistor (R4) to GND. (This generates a maximum load current of 100 μA.) Inserted
LK5B Connects +15VOUT (Pin 10) to 1.5 MΩ resistor (R5) to GND. (This generates a minimum load current of 10 μA.) Inserted
LK5C Connects +15VOUT (Pin 10) to patchwork area. Inserted
LK6A Connects ADM8832 regulated +5VOUT (Pin 4) to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.) Inserted
LK6B Connects externally regulated 5 V output to +5VIN (Pin 5). (Input to the +15 V and −10 V charge pump stage.) Removed
LK7A Connects VCC to LDO_ON/OFF (Pin 6). Inserted
LK7B Connects LDO_ON/OFF (Pin 6) to GND. Removed
LK8A Connects VCC to SHDN (Pin 7). Inserted
LK8B Connects SHDN (Pin 7) to GND. Removed
LK9A Connects VCC to SCAN/BLANK (Pin 8). Inserted
LK9B Connects SCAN/BLANK (Pin 8) to GND. Removed
EVAL-ADM8832
Rev. 0 | Page 4 of 8
SETTING UP THE ADM8832 EVALUATION BOARD
Scanning Mode
To set up the ADM8832 evaluation board in scanning mode,
use the following steps:
1. Connect the scanning mode load resistors.
2. +5VOUT—Connect R1 (insert LK1A, remove LK1C/LK1D)
3. +15VOUT—Connect R4 (insert LK5A )
4. −10VOUT—Connect R6 (insert LK4A )
Note that all other load resistors should be disconnected by
removing their links (see Table 3).
5. Connect VOUT to the ADM8832 LDO (insert LK2A,
remove LK2B).
6. Use 3.3 V logic levels for logic inputs.
7. Connect the following jumpers:
SHDN—Insert LK8A, remove LK8B
LDO_ON/OFF—Insert LK7A, remove LK7B
SCAN/BLANK—Insert LK9A, remove LK9B
8. CLKIN—Connect the SMB cable to SK1.
Note that an external clock is not required to be applied to
CLKIN (Pin 9) in this mode.
9. Apply a 3 V supply to J1.
Blanking Mode
To set up the ADM8832 evaluation board in blanking mode,
use the following steps:
1. Connect the blanking mode load resistors.
2. +5VOUT—Connect R3 (insert LK1C, remove LK3A/LK3B)
3. +15VOUT—Connect R5 (insert LK5B)
4. −10VOUT—Connect R7 (insert LK4B)
Note that all other load resistors should be disconnected by
removing their links (see Table 3).
5. Connect VOUT to the ADM8832 LDO (insert LK2A,
remove LK2B).
6. Use 3.3 V logic levels for logic inputs.
7. Connect the following jumpers:
SHDN—Insert LK8A, remove LK8B
LDO_ON/OFF—Insert LK7A, remove LK7B
SCAN/BLANK—Insert LK9B, remove LK9A (The signal
must be low for blanking mode.)
8. CLKIN—Connect the SMB cable to SK1.
Note that an external clock must be applied to CLKIN
(Pin 9) in this mode. The frequency of this clock is
nominally 1 kHz (refer to the ADM8832 data sheet for
more details).
9. Apply a 3 V supply to J1.
EVAL-ADM8832
Rev. 0 | Page 5 of 8
EVALUATION BOARD SCHEMATIC
07156-002
U1
ADM8832ACP
LK4
R6
R7 1M
LK5
R4
R5 1.5M
LK3
SK1
LK9
LK1
24.9k
R1
R2
R3
Figure 2. ADM8832 Evaluation Board Schematic
EVAL-ADM8832
Rev. 0 | Page 6 of 8
ORDERING INFORMATION
BILL OF MATERIALS
Table 4.
Qty Reference Designator Description Manufacturer Part Number
1 U1 20-lead LFCSP socket (ADM8832 inside) Loranger 03714-201-6217
2 J1, J2 Power connector, 5 mm pitch Weidmuller 1716120000
1 SK1 SMB connector Emerson SMB 131-3701-266
2 T1 to T2, Test point Vero 20-313137
7 T4 to T10 Test point Vero 20-313137
6 C2 to C4, C8 to C9 Capacitor, 1 μF, 50 V, 1206, X7R TDK C3216X7R1H105M
5 C1, C5 to C7 Capacitor, 2.2 μF, 25 V, 1206, X7R TDK C3216X5R1E225K
1 R1 Resistor, 620 Ω, 0805 1% Yageo RC0805FR-07620RL
1 R2 Resistor, 1 kΩ, 0805 1% Yageo RC0805FR-071KL
1 R3 Resistor, 24.9 kΩ, 0805 1% Yageo RC0805FR-0725KL
1 R4 Resistor, 150 kΩ, 0805 1% Yageo RC0805FR-07150L
1 R5 Resistor, 1.5 MΩ, 0805 1% Yageo RC0805FR-071M5L
1 R6 Resistor, 100 kΩ,0805 1% Yageo RC0805FR-07100KL
1 R7 Resistor, 1 M Ω, 0805 1% Yageo RC0805FR-071ML
ORDERING GUIDE
Model Description
ADM8832-EVALZ1Evaluation Board
1Z = RoHS Compliant Part.
ESD CAUTION
EVAL-ADM8832
Rev. 0 | Page 7 of 8
NOTES
EVAL-ADM8832
Rev. 0 | Page 8 of 8
NOTES
©2008 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
EB07156-0-6/08(0)
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