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reference designLTC4124 | Demoboard DC2775A-B

Analog Devices LTC4124 | Demoboard DC2775A-B

LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit

Overview

TopologyWireless Power Transfer
Input voltage4.5-5.5 V
Output 14.35 V / 0.03 A

Description

DC2769A-B-KIT is a kit of the DC2771A-B transmitter board, featuring LTC6990 and the DC2775A-B, featuring LTC4124. The DC2775A-B receiver can charge a single Li-Ion battery at up to 25mA with an air gap of 2mm to 5mm between the transmit and receive coils.

Features

  • Complete Wireless Power Receiver, Li-Ion Charger and PowerPath™ Controller
  • Wireless Input Power Control and Rectification
  • Wideband Wireless Power Frequency: DC to >10MHz
  • Pin-Selectable Charge Current: 10mA/25mA/50mA/100mA
  • Pin-Selectable Charge Voltage: 4.0V/4.1V/4.2V/4.35V
  • Pin-Selectable Low Battery Disconnect: 2.7V/3.2V
  • Zero Battery Drain Current in Disconnect/Ship Mode
  • Pin-Selectable Low Battery Pre-Charge Current Enable
  • NTC Input for Temperature Qualified Charging
  • Safety Charge Termination Timer
  • Tiny Total Solution Size with Few Externals
  • Small Thermally Enhanced 12-lead 2mm × 2mm LQFN Package

Typical applications

  • Medical Wireless Sensors
  • IoT Devices, Military Wearables, High End Wireless Headsets, Streaming Headsets with Bluetooth Connectivity, Virtual Reality Headsets

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Compliance
Size
L(µH)
IR(A)
RDC max.(mΩ)
fres(MHz)
Q
P(W)
Pins
Type
Mount
L(mm)
H(mm)
Working Voltage(V (AC))
Operating Temperature
SamplesAvailability & Sample
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760308101208
SPECWE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 10 x 1.6 mm
Simu­lation
Availability
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-WPCC Wireless Power Transfer Receiver Coil
Complianceworks with Qi Rx IC's 
SizeØ 10 x 1.6 mm 
Inductance13 µH
Rated Current0.8 A
DC Resistance500 mΩ
Self Resonant Frequency26 MHz
Q-Factor17 
Power Capability [1]15 W
Pins2 
–
MountTHT 
Length10 mm
Height1.68 mm
–
Operating Temperature -20 °C up to +105 °C
–Check availability
60800213421
SPECWR-PHD Jumper, –, –
Simu­lation–
Availability
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Downloads3 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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–
–
Rated Current3 A
–
–
–
–
Pins2 
–
–
–
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Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
–Check availability
62000311121
SPECWR-PHD Pin Header, –, –
Simu­lation–
Availability
–
Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
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–
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Rated Current2 A
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–
–
–
Pins3 
TypeStraight 
MountTHT 
Length6 mm
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Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability