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Analog Devices LTC4126 ADJ | Demoboard DC3078A
Wireless Li-Ion Charger with 1.2V Step-Down DC/DC Converter
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-5.5 V |
| Output 1 | 1.2 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.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | H(mm) | Operation Force(g) | Electrical Life(Cycles) | Actuator Color | Washable | Vaporphase process | Compliance | Size | L(µH) | IR(A) | RDC max.(mΩ) | fres(MHz) | Q(%) | P(W) | Pins | Type | Mount | L(mm) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-WPCC Wireless Power Transfer Receiver Coil, 1.68 mm, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-WPCC Wireless Power Transfer Receiver Coil | Height1.68 mm | – | – | – | – | – | 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 | – | Operating Temperature -20 °C up to +105 °C | ||||
 | WS-TASV SMT Tact Switch 6.0x3.8 mm, 2.5 mm, 260 g | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWS-TASV SMT Tact Switch 6.0x3.8 mm | Height2.5 mm | Operation Force260 g | Electrical Life30000 Cycles | Actuator ColorWhite | WashableNo | Vaporphase processnot specified | – | – | – | Rated Current0.05 A | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +85 °C | ||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | – | Rated Current3 A | – | – | – | – | Pins2 | – | – | – | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | – | Rated Current2 A | – | – | – | – | Pins3 | TypeStraight | MountTHT | Length6 mm | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |