MAX850EVKIT-SO Maxim Integrated, MAX850EVKIT-SO Datasheet
MAX850EVKIT-SO
Manufacturer Part Number
MAX850EVKIT-SO
Description
Charge Pumps Evaluation Kit for the MAX850 MAX851 MAX852 MAX853
Manufacturer
Maxim Integrated
Datasheet
1.MAX850EVKIT-SO.pdf
(3 pages)
Specifications of MAX850EVKIT-SO
Function
Inverting
Output Voltage
- 4.1 V, - 0.5 V to - 9 V
Output Current
5 mA
The MAX850–MAX853 ICs are inverting, charge-pump
DC-DC converters with low-noise, regulated outputs.
Their low output ripple voltage makes these devices
ideal for biasing the GaAs FETs commonly found in cel-
lular telephone transmitters.
The MAX850 evaluation kit (EV kit) is a fully assembled
and tested surface-mount board. The board is shipped
with a MAX850 mounted, but it can be replaced by the
MAX851, MAX852, or MAX853. Provisions are made
for mounting two additional resistors, which are
required for output voltages other than -4.1V. A special
scope-probe socket is also mounted on the board, so
output noise can be observed on an oscilloscope.
♦ 4.5V to 10V Input Range
♦ -4.1V Regulated Output
♦ Less than 2mVp-p Output Voltage Ripple
♦ 5mA Output Current
♦ Surface-Mount Technology
____________________________Features
Figure 1. MAX850 EV Kit Schematic Diagram
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.
_______________General Description
GND
V
J1
IN
SHDN / OSC
1
2
3
________________________________________________________________ Maxim Integrated Products
1µF
1µF
C3
C1
1
2
3
4
C1+
C1-
NEGOUT
SHDN
MAX850
U1
MAX850 Evaluation Kit
____________________Component List
DESIGNATION
MAX850EVKIT-SO
______________Ordering Information
C1, C2, C3
GND
OUT
CUT HERE
R1, R2
FB
IN
None
None
C4
U1
J1
J3
PART
8
7
6
5
J2
QTY
3
1
0
1
1
1
1
1
C2
1µF
R1
OPEN
R2
OPEN
1µF, 25V low-ESR tantalum capacitors,
Matsuo 267E 2502 105K
10µF, 16V low-ESR tantalum
capacitor, Matsuo 267E 1602 106K
Open
3-pin header
Scope probe connector,
Specialty Connectors 33JR135-1
Maxim MAX850ISA 8-pin SO
Shunt
2.50" x 1.75" printed circuit board
TEMP. RANGE
0˚C to +70˚C
C4
10µF
DESCRIPTION
J3
V
4.5V TO 10V
GND
V
V
-4.1V
V
GND
IN
OUT
OUT
CTRL
BOARD TYPE
Surface Mount
1
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MAX850EVKIT-SO Summary of contents
Page 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. MAX850 Evaluation Kit ____________________Component List DESIGNATION C1 None None ______________Ordering Information PART MAX850EVKIT- C1 1µ MAX850 C1- GND C3 1µF ...
Page 2
MAX850 Evaluation Kit _________________________Quick Start The MAX850 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Do not turn on the power supply until all connections are completed. 1) Connect a 4.5V to 10.0V ...
Page 3
... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 ___________________ 3 © 1994 Maxim Integrated Products ...