1
dc2181afb
DEMO MANUAL
DC2181A-A/B
Description
LTC4120EUD
Wireless Power Receiver
and 400mA Buck Battery Charger
Demonstration circuit 2181 is an
LTC
®
4120EUD
demon-
stration board. The DC2181 is used with the DC1968A
wireless power transmitter or the PowerByProxi ProxiPoint
transmitter (both available separately). Either can deliver
2W to the DC2181, with up to 10mm spacing between
the transmitter and the receive coil. The basic transmitter
doesn’t support foreign metal object detection. Transmitters
available separately. See last page for details.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
performance summary
BoarD photo
FEATURED PART
DC2181A-A
LTC4120EUD-4.2 (Fixed Output)
DC2181A-B
LTC4120EUD (Adjustable Output)
Design files for this circuit board are available at
http://www.linear.com/demo/DC2181A
Specifications are at T
A
= 25°C
Figure 1. DC2181 Wireless Power Receiver Demo Board
Figure 2. DC1968A Wireless Power Basic Transmitter Demo Board
Figure 3. PowerByProxi ProxiPoint Transmitter
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
HVIN
DC1968A High Voltage Input Voltage Range
IHVIN ≤ 500mA at HVIN = 8V
8
38
V
V
CC
DC1968A V
CC
Input Range
IV
CC
= 0 ~ 700mA
4.75
5.25
V
V(BAT)
DC2181A BAT Pin Voltage
R9 = 1.40MΩ, R10 = 1.05MΩ
2.5
4.25
V
I(BAT)
DC2181A BAT Pin Current
V(BAT) = 3.7V, DC1967A(R5) = 3.01kΩ, All Bar
Graph LEDs on.
370
380
390
mA
OR
OR
NOTE: These boards
are not included with
DC2181 and must be
ordered separately.
See last page for details.
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