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dc1969aabfb
DEMO MANUAL
DC1969A-A/DC1969A-B
DESCRIPTION
LTC4120EUD-4.2/LTC4120EUD
Wireless Power Receiver and
400mA Buck Battery Charger
Demonstration circuit DC1969A is a kit of: the DC1967A‑A/B
demonstration board, the DC1968A basic
wireless transmitter, a 35mm receiver ferrite disk, and
an assortment of different length standoffs. The basic
transmitter can deliver 2W to the receive board with up
to 10mm spacing between the transmit and the receive
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
coils. The basic transmitter does not support foreign object
detection, i.e. coins or other metallic objects.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1969A
Specifications are at T
A
= 25°C
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
= 0mA to 700mA
4.75
5.25
V
V
BAT
DC1967A BAT Pin Voltage
R9 = 1.40MΩ, R10 = 1.05MΩ
2.5
4.25
V
I
BAT
DC1967A BAT Pin Current
V
BAT
= 3.7V, DC1967A(R5) = 3.01kΩ
370
385
400
mA
n
1X DC1967A‑A/B (LTC4120EUD) Demo Board
n
1X DC1968A (Wireless Basic Transmitter) Demo Board
n
1X 35mm Ferrite Bead
n
4X 6.25mm (0.25") Nylon Standoffs
n
4X 12.5mm (0.50") Nylon Standoffs
n
4X 15.875mm (0.625") Nylon Standoffs
CONTENTS
Kit Build Options
KIT NUMBER
Tx BOARD
Rx BOARD
DC1969A‑A
DC1968A
DC1967A‑A
DC1969A‑B
DC1968A
DC1967A‑B
Receiver Board Build Options
Rx BOARD
PART NUMBER
FUNCTION
DC1967A‑A
LTC4120EUD‑4.2
Fixed 4.2V Float Voltage
DC1967A‑B
LTC4120EUD
Adjustable Float Voltage
Figure 1. DC1968A Basic Transmitter Board
Figure 2. DC1967A-B LTC4120 Receiver Board
This datasheet has been downloaded from
at this
