MAX17010EVKIT [MAXIM]
Eight 30V to -10V High-Voltage Level-Shifting Buffers;
| 型号： | MAX17010EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Eight 30V to -10V High-Voltage Level-Shifting Buffers |
| 文件： | 总10页 (文件大小：182K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0855; Rev 0; 7/07
MAX17010 Evaluation Kit
Evluates:MAX710
General Description
Features
♦ 1.8V to 5.5V Input Range
The MAX17010 evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount printed circuit board
(PCB) that provides the voltages and features required
for active-matrix, thin-film transistor (TFT), liquid-crystal
displays (LCDs). The EV kit contains a step-up switch-
ing regulator, a high-speed operational amplifier (op
amp), and eight high-voltage level-shifting buffers for
scan-driver applications.
♦ Output Voltages
8.5V Output at 300mA from a 2.7V Input (Step-
Up Switching Regulator)
23V Output at 20mA (Positive Charge Pump)
-7.5V Output at 20mA (Negative Charge Pump)
4.25V High-Current Op Amp Output
The EV kit operates from a DC supply voltage of 1.8V to
5.5V. The step-up switching regulator is configured for a
8.5V output providing at least 300mA from a 2.7V input.
The positive charge pump is configured for a 23V output
providing at least 20mA. The negative charge pump is
configured for a -7.5V output providing at least 20mA.
The op amp is configured for 4.25V, capable of provid-
ing up to 150mA peak. The high-voltage, level-shifting
scan driver buffers eight logic inputs and shifts them to
a desired level to drive TFT-LCD row logic.
♦ Resistor-Adjustable Switching-Regulator and Op
Amp Output Voltage
♦ Eight 30V to -10V High-Voltage Level-Shifting
Buffers
♦ Greater than 85% Efficiency (Step-Up Switching
Regulator)
♦ 1.2MHz Step-Up Switching Frequency
♦ 1.2mm Low-Profile Surface-Mount Components
♦ Fully Assembled and Tested
The MAX17010 EV kit demonstrates low quiescent cur-
rent and high efficiency (> 85%) for maximum battery
life. Operation at 1.2MHz allows the use of tiny surface-
mount components. The MAX17010 thin QFN package
(0.8mm maximum height), with low-profile external com-
ponents, allows this circuit to be less than 1.2mm high.
Ordering Information
PART
TEMP RANGE
IC PACKAGE
40 TQFN (5mm x
5mm x 0.8mm)
MAX17010EVKIT+
0°C to +70°C*
+Denotes a lead-free and RoHS-compliant EV kit.
*This limited temperature range applies to the EV kit PCB only.
The MAX17010 IC temperature range is -40°C to +85°C.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
10µF 20%, ꢀ.3V X5R ceramic
capacitor (0ꢀ03)
Murata GRM188Rꢀ0J10ꢀM
TDK C1ꢀ08X5R0J10ꢀM or equivalent
220pF 10%, 50V X7R ceramic
capacitor (0ꢀ03)
Murata GRM188R71H221K
TDK C1ꢀ08X7R1H221K or equivalent
C1
C2
1
0
C5
1
Not installed, ceramic capacitor
(120ꢀ)
4.7µF 10%, 1ꢀV X5R ceramic
capacitors (120ꢀ)
C1ꢀ, C17
C18, C19, C20
C21–C28
C29
2
0
8
0
Murata GRM319Rꢀ1C475KA88D
TDK C321ꢀX5R1C475K
0.22µF 1%, 10V X7R ceramic
capacitor (0ꢀ03)
TDK C1ꢀ08X7R1C224K
KEMET C0ꢀ03C224K4RAC or
equivalent
C3
1
Not installed, ceramic capacitors
(0ꢀ03)
100pF 5%, 50V C0G ceramic
capacitors (0ꢀ03)
Murata GRM1885C1H101J
TDK C1ꢀ08C0G1H101J or equivalent
0.1µF 10%, 50V X7R ceramic
capacitors (0ꢀ03)
Murata GRM188R71H104K
TDK C1ꢀ08X7R1H104K or equivalent
C4, Cꢀ–C15
11
Not installed, electrolytic capacitor
(ꢀ.3mm x 5mm)
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX17010 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
34kΩ 1% resistor (0ꢀ03)
100kΩ 1% resistor (0ꢀ03)
100kΩ 5% resistors (0ꢀ03)
DESIGNATION QTY
DESCRIPTION
R3
R4
1
1
9
30V, 1A Schottky diode (S-Flat)
Nihon EP10QY03
Toshiba CRS02(TE85L,Q)
D1
1
R7–R15
100V, 200mA dual diodes (SOT23)
Fairchild MMBD4148SE
(Top Mark: D4)
Central CMPD7000 lead free (Top
Mark: C5C)
Not installed, resistors—shorted by
PC trace (0ꢀ03)
R1ꢀ, R17, R20
0
D2, D3, D4
3
Not installed, resistors—shorted by
PC trace (0402)
R18, R19
SW1, SW2
U1
0
2
1
8-position, low-profile DIP switches
JU1
L1
1
1
2-pin header
MAX17010TEL+ (40-pin TQFN,
5mm x 5mm)
3.ꢀµH, 1.8A power inductor
Sumida CMDꢀD11BHPNP-3RꢀMC
R1
1
3
0Ω resistor (0ꢀ03)
A1–A8, Y1–Y8
—
0
1
Not installed, test points
R2, R5, Rꢀ
200kΩ 1% resistors (0ꢀ03)
PCB: MAX17010 Evaluation Kit+
Component Suppliers
Evluates:MAX710
SUPPLIER
PHONE
WEBSITE
www.centralsemi.com
www.fairchildsemi.com
www.murata.com
Central Semiconductor Corp.
Fairchild Semiconductor
Murata Mfg. Co., Ltd.
ꢀ31-35-1110
888-522-5372
770-3ꢀ-1300
81-3-3343-3411
ꢀ19-ꢀꢀ1-ꢀ322
847-545-ꢀ700
847-803-ꢀ100
949-455-2000
Nihon Inter Electronics Corp.
SANYO North America Corp.
Sumida Corp.
www.niec.co.jp
www.sanyodevice.com
www.sumida.com
TDK Corp.
www.component.tdk.com
www.toshiba.com/taec
Toshiba America Electronic Components, Inc.
Note: Indicate that you are using the MAX17010 when contacting these component suppliers.
3) Connect the positive terminal of the power supply to
the VIN pad. Connect the negative terminal of the
power supply to the GND pad.
Quick Start
Recommended Equipment
• 1.8V to 5.5V, 2A DC power supply
4) Turn on the power supply and verify that the step-
up switching regulator output (VMAIN) is 8.5V.
• Voltmeter
5) Verify that the gate-on supply (GON) is approxi-
mately 23V.
Procedure
The MAX17010 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
ꢀ) Verify that the gate-off supply (GOFF) is approxi-
mately -7.5V.
7) Verify that the output of the high-speed op amp
(VCOM) is 4.25V.
1) Verify that there is a shunt installed across jumper
JU1.
8) Verify that the outputs of the high-voltage level-shift-
ing buffers are approximately 23V (= GON).
2) Verify that SW1 and SW2 eight-position DIP switch-
es are in the ON position.
For instructions on selecting the step-up switching regu-
lator feedback and op amp divider resistors for other out-
put voltages, see the Output Voltage Selection section.
2
_______________________________________________________________________________________
MAX17010 Evaluation Kit
Evluates:MAX710
Detailed Description
Table 1. Jumper JU1 Functions
The MAX17010 EV kit contains a step-up switching reg-
ulator, a positive two-stage charge pump, a negative
single-stage charge pump, a high-speed op amp, and
eight high-voltage level-shifting buffers for scan-driver
applications. The EV kit operates from a DC power sup-
ply between 1.8V and 5.5V that provides at least 2A.
SHUNT
SHDN PIN
EV KIT OUTPUTS
POSITION
Outputs enabled
(VMAIN = 8.5V)
Installed*
SHDN is tied to PIN
SHDN is tied to
Outputs disabled
Not installed
As configured, the step-up switching regulator (VMAIN)
generates an 8.5V output and provides at least 200mA
from a 1.8V input. It also provides at least 300mA from
a 2.7V input and 700mA from a 5.5V input. The step-up
switching-regulator output voltage can be adjusted up
to 18V with different feedback resistors (see the Output
Voltage Selection section).
ground through R7 (VMAIN ≈ PIN)
*Default position.
Output Voltage Selection
Step-Up Switching-Regulator
Output Voltage (VMAIN)
The GON consists of two positive charge-pump stages to
generate approximately 23V and can provide greater
than 20mA. The GOFF consists of a single negative
charge-pump stage to generate approximately -7.5V and
can provide greater than 20mA. Loading GON and GOFF
reduces the available VMAIN current proportionally.
The MAX17010 EV kit’s step-up switching-regulator out-
put (VMAIN) is set to 8.5V by feedback resistors R2
and R3. To generate output voltages other than 8.5V
(up to 18V), select different external voltage-divider
resistors, R2 and R3.
Note that changing the VMAIN voltage setting changes
the GON and GOFF charge-pump output voltages. The
voltage range on GOFF is limited to -10V and the volt-
age range of GON1 and GON2 is limited to 30V. If
VMAIN is set for more than 10V, PCB traces shorting
R1ꢀ, R17, and R20 should be cut, disconnecting
GON1, GON2, and GOFF from the charge-pump out-
puts. If operation of the high-voltage buffers is desired,
power GON1, GON2, and GOFF from an external sup-
ply or postregulated charge-pump outputs.
The op amp output (VCOM) is set to 4.25V and can
source or sink peak current up to 150mA. The output can
be reconfigured to other voltages with voltage-divider
resistors (see the Output Voltage Selection section).
The eight logic-level to high-voltage level-shifting buffers
can buffer eight logic inputs (A1–A8) and shift them to a
desired level (Y1–Y8) to drive TFT-LCD row logic. Each
buffer outputs the voltage on the GOFF pin (set to the
voltage on the GOFF pad through R20) when its respec-
tive input is logic-high. Each buffer (Y1–Yꢀ) outputs the
voltage at GON1 (set to GON through R1ꢀ) when its
respective input is logic-high. Similarly, Y7 and Y8 output
the voltage at GON2 (set to GON through R17).
In addition, output capacitors C1ꢀ and C17 are rated
for 1ꢀV. To set VMAIN for greater than 1ꢀV, use higher
voltage-rated capacitors. Refer to the Main Step-Up
Regulator, Output Voltage Selection section in the
MAX17010 data sheet for instructions on selecting
resistors R2 and R3.
The eight switches within SW1 are used to select logic
levels on A1–A8 for testing purposes. Set each switch
open when driving A1–A8 with external logic. The eight
switches within SW2 are used to connect capacitive
loads to Y1–Y8 for testing purposes. Set each switch
open when Y1–Y8 drive an actual panel load.
Op Amp Output Voltage (VCOM)
The MAX17010 EV kit’s op amp is configured as a unity-
gain buffer by the PCB trace shorting R19 between
NEG and VCOM. The voltage at the noninverting input
(POS) is set to half of VMAIN by voltage-divider resis-
tors R5 and Rꢀ. To set VCOM to other voltages (up to
VMAIN), select different divider resistors.
Jumper Selection
The MAX17010 EV kit incorporates a jumper (JU1) to con-
trol the SHDN pin. See Table 1 for jumper JU1 functions.
_______________________________________________________________________________________
3
MAX17010 Evaluation Kit
VGOFF
GOFF
GON
GON
-7.5V AT 20mA
23V AT 20mA
C9
C10
0.1μF
0.1μF
GND
C8
0.1μF
D2
D3
D4
GND
C7
0.1μF
C11
0.1μF
C12
0.1μF
PIN
PIN
VMAIN
L1
1.8V TO 5.5V
8.5V AT 300mA
3.6μH
D1
C1
10μF
6.3V
R2
200kΩ
1%
C17
4.7μF
16V
C16
4.7μF
16V
C29
OPEN
C18
OPEN
R1
0Ω
C2
OPEN
39 38
LX LX
GND
GND
37
4
IN
FB
C6
0.1μF
1
2
3
R3
34kΩ
1%
GON
N.C.
R18
SHORT
(PC TRACE)
PGND
PGND
R16
SHORT
(PC TRACE)
5
AGND
VL
R5
GON
28
200kΩ
SUP
6
1%
GON1
GON2
C3
Evluates:MAX710
U1
C15
R17
SHORT
(PC TRACE)
0.22μF
0.1μF
32
SUP
MAX17010
25
R19
SHORT
(PC TRACE)
C4
0.1μF
BGND
C13
0.1μF
VGOFF
34
35
33
NEG
VCOM
POS
VCOM
R20
POS
C14
0.1μF
SHORT
(PC TRACE)
PIN
7
R6
GOFF
SHDN
C19
OPEN
200kΩ
1%
JU1
36
29
BGND
Y1
8
9
12
13
14
15
16
17
18
19
A1
A2
A3
A4
A5
A6
A7
A8
A1
A2
A3
A4
A5
A6
A7
A8
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
R7
100kΩ
Y2
Y3
Y4
Y5
Y6
Y7
Y8
BGND
10
11
20
21
22
23
COMP
N.C. N.C. N.C. N.C.
24 30 40
AGND
26
31
27
R4
100kΩ
1%
C20
OPEN
C5
220pF
Figure 1a. MAX17010 EV Kit Schematic (Sheet 1 of 2)
4
_______________________________________________________________________________________
MAX17010 Evaluation Kit
Evluates:MAX710
A1
A2
A3
A4
A5
A6
A7
A8
A1
A2
A3
A4
A5
A6
A7
A8
R8
100kΩ
SW1
SW2
R9
100kΩ
C21
100pF
PIN
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
C22
100pF
R10
100kΩ
C23
100pF
C24
100pF
R11
100kΩ
C25
100pF
R12
100kΩ
C26
100pF
C27
100pF
R13
100kΩ
C28
100pF
R14
100kΩ
R15
100kΩ
Figure 1b. MAX17010 EV Kit Schematic (Sheet 2 of 2)
_______________________________________________________________________________________
5
MAX17010 Evaluation Kit
Evluates:MAX710
Figure 2. MAX17010 EV Kit Component Placement Guide—Component Side
6
_______________________________________________________________________________________
MAX17010 Evaluation Kit
Evluates:MAX710
Figure 3. MAX17010 EV Kit PCB Layout—Component Side
_______________________________________________________________________________________
7
MAX17010 Evaluation Kit
Evluates:MAX710
Figure 4. MAX17010 EV Kit PCB Layout—GND Layer 2
8
_______________________________________________________________________________________
MAX17010 Evaluation Kit
Evluates:MAX710
Figure 5. MAX17010 EV Kit PCB Layout—Signal Layer 3
_______________________________________________________________________________________
9
MAX17010 Evaluation Kit
Evluates:MAX710
Figure ꢀ. MAX17010 EV Kit PCB Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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