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Analog Devices LTC4126 ADJ | Demoboard DC3078A

Wireless Li-Ion Charger with 1.2V Step-Down DC/DC Converter

Overview

TopologyBuck Converter
Input voltage4.5-5.5 V
Output 11.2 V / 0.01 A

Description

Demonstration Kit DC3080-KIT features LTC®4126ADJ, wireless Li-Ion Charger with 1.2V Step-Down DC/ DC Converter. This kit comprises a wireless transmitter DC3081A, a wireless receiver DC3078A and two 6mm application-sized receivers DC3079A. DC3078A wireless charger receiver incorporates an external trickle charge circuit that reduces the charge current to 1mA when a deeply discharged battery with voltage lower than 2.8V is plugged in. The combination of DC3081A transmitter and DC3078A receiver can charge a single Li-Ion battery at up to10mA with an airgap of 4.0mm to 8.0mm.

Features

  • Wireless Li-Lon Battery Charger Plus High Efficiency Multi-Mode Charge Current from 1mA to 50mA Via an External Resistor
  • Programmable Charge Current from 1mA to 50mA Via an External Resistor
  • Wideband Rx Frequency: DC to >10MHz
  • Integrated Rectifier with Overvoltage Limit
  • Charge Voltage: 4.2V
  • Low Battery Disconnect: 3.0V
  • NTC Pin for Temperature Qualified Charging
  • DC/DC Regulated Output: 1.2V
  • DC/DC Output Current: Up to 60mA
  • 50kHz/75kHz Switching, No Audible Noise
  • Pushbutton and/or Digital on/off Control for DC/DC
  • Thermally Enhanced 12-Lead 2mm × 2mm LQFN Package

Typical applications

  • Hearing Aids, Low Power Li-Ion Powered Devices, Wireless Headsets, IoT Wearables.

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesH
(mm)
Operation Force (Value)
(g)
Electrical Life
(Cycles)
Actuator ColorVaporphase processComplianceSizeL
(µH)
IR
(A)
RDC max.
(mΩ)
fres
(MHz)
QP
(W)
Pins (Value)
(pcs)
RowsGenderTypePackaging Samples
760308101208SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WE-WPCC Wireless Power Transfer Receiver Coil 1.68 works with Qi Rx IC's Ø 10 x 1.6 mm 13 0.8 500 26 17 15 2
434111025826SPEC
5 files Active i| Production is active. Expected lifetime: >10 years.WS-TASV SMT Tact Switch 6.0x3.8 mm 2.5 260 30000 White not specified 0.05 Tape and Reel
60800213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm Jumper with Test Point 3 2 Jumper Bag
62000311121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Pin Header 2 3 Single Pin Header Straight Bag
Order Code Data­sheet Simu­lation
760308101208SPEC
434111025826SPEC
60800213421SPEC
62000311121SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesH
(mm)
Operation Force (Value)
(g)
Electrical Life
(Cycles)
Actuator ColorVaporphase processComplianceSizeL
(µH)
IR
(A)
RDC max.
(mΩ)
fres
(MHz)
QP
(W)
Pins (Value)
(pcs)
RowsGenderTypePackaging Samples