MAX1620EVKIT Maxim Integrated, MAX1620EVKIT Datasheet
MAX1620EVKIT
Manufacturer Part Number
MAX1620EVKIT
Description
Power Management IC Development Tools Evaluation Kit for the MAX1620 MAX1621
Manufacturer
Maxim Integrated
Series
MAX1620, MAX1621r
Datasheet
1.MAX1620EVKIT.pdf
(4 pages)
Specifications of MAX1620EVKIT
Output Current
150 uA
The MAX1620 evaluation kit (EV kit) converts a +1.8V to
+12V battery voltage to a +12.5V to +23.5V LCD back-
plane bias voltage for currents up to 20mA. Both the
MAX1620 and MAX1621 include a 5-bit DAC, allowing
digital software control of the bias voltage. The
MAX1620 uses up/down digital signaling to adjust the
DAC, and the MAX1621 uses the System Management
Bus (SMBus™) 2-wire serial interface.
The MAX1620 EV kit is a fully assembled and tested sur-
face-mount circuit board. It can also be used to evaluate
the MAX1621.
19-1214; Rev 1; 1/98
SMBus is a trademark of Intel Corp.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
R2, R8, R9, R10
Additional components for negative output (included in
the EV kit) but not installed:
DESIGNATION
C1, C6
C2, C3
R3, R4
R6, R7
D2, D3
None
None
None
R11
JU3
JU8
C5
D1
D4
N1
Q1
U1
C4
C7
R1
R5
L1
QTY
2
2
1
1
1
1
1
1
1
4
2
1
2
1
1
1
1
1
1
1
1
1
1
2
________________________________________________________________ Maxim Integrated Products
22µF, 35V tantalum capacitors
AVX TPSE226M035R0300 or
Sprague 593D226X0035E2T
0.1µF ceramic capacitors
100pF ceramic capacitor
Schottky diode Motorola MBR0540T1
Schottky diode
Central Semiconductor CMPSH-3
100µH inductor Sumida CD54-101
N-channel MOSFET Motorola
MMFT3055VL
2N2907A transistor Central
Semiconductor CMPT2907A
82kΩ, 5% resistor
100kΩ, 5% resistors
300kΩ, 5% resistors
2.2MΩ, 5% resistor
56kΩ, 5% resistors
10kΩ, 5% resistor
MAX1620EEE (QSOP-16)
3-pin header
Shunt (JU3)
2-pin header
MAX1620/MAX1621 PC board
MAX1620/MAX1621 data sheet
Shunt
1µF ceramic capacitor
22µF, 35V tantalum capacitor
AVX TPSE226M035R0300 or
Sprague 593D226X0035E2T
Schottky diodes Motorola MBR0540T1
General Description
Component List
DESCRIPTION
MAX1620 Evaluation Kit
Note: To evaluate the MAX1621, request a free MAX1621EEE
sample with the MAX1620 EV kit.
* Please indicate that you are using the MAX1620 EV kit when
The MAX1620 EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supply until all connections are
completed.
1) Connect a +1.8V to +12V power supply to the
2) Connect a voltmeter and load, if any, to the VOUT
3) Verify the JU3 shunt is across pins 1 and 2 (positive
4) Turn on the power supply and verify that the output
5) For other output voltages, refer to the Output Adjustment
contacting these component suppliers.
MAX1620EVKIT
AVX
Central
Semiconductor
Coilcraft
Coiltronics
Dale-Vishay
Motorola
Sprague
Sumida
Vishay/Vitramon
+1.8V to +12V Battery Input Voltage
+12.5V to +23.5V Adjustable Output
20mA Output
32-Level Internal DAC
10µA Shutdown Current
Surface-Mount Components
Fully Assembled and Tested
VBATT pad and a +3V to +5.5V supply to the VIN
pad. Connect ground to the GND pad.
pad.
output).
voltage is typically +17.8V.
section in the MAX1620/MAX1621 data sheet for
instructions on selecting the feedback resistors.
SUPPLIER*
PART
TEMP. RANGE
0°C to +70°C
Component Suppliers
803-946-0690
516-435-1110
847-639-6400
561-241-7876
402-564-3131
602-303-5454
603-224-1961
847-956-0666
203-268-6261
Ordering Information
PHONE
Quick Start
Surface Mount
BOARD TYPE
803-626-3123
516-435-1824
847-639-1469
561-241-9339
402-563-6418
602-994-6430
603-224-1430
847-956-0702
203-452-5670
Features
FAX
1
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MAX1620EVKIT Summary of contents
Page 1
... Output 32-Level Internal DAC 10µA Shutdown Current Surface-Mount Components Fully Assembled and Tested Ordering Information PART TEMP. RANGE MAX1620EVKIT 0°C to +70°C Note: To evaluate the MAX1621, request a free MAX1621EEE sample with the MAX1620 EV kit. Component Suppliers SUPPLIER* PHONE AVX 803-946-0690 ...
Page 2
MAX1620 Evaluation Kit _______________Detailed Description The MAX1620 EV kit converts a +1.8V to +12V battery voltage to a +12.5V to +23.5V LCD backplane bias volt- age for currents up to 20mA. The output voltage can be adjusted with the on-chip ...
Page 3
Figure 1. MAX1620 EV Kit Main Circuit Schematic _______________________________________________________________________________________ MAX1620 Evaluation Kit 3 ...
Page 4
... 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. 4 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products 1.0" ...