IC reference design search
IC manufacturers Analog Devices

IC manufacturers (104)

reference designLTC4124

Analog Devices LTC4124

100mA Wireless Li-Ion Charger with Low Battery Disconnect

Overview

TopologyWireless Power Transfer
Input voltage3.3-5.5 V
Switching frequency50-10000 kHz
Output 13.4 V / 0.1 A
IC revisionA

Description

The LTC®4124 is a simple high performance wireless Li-Ion charger with low battery disconnect. The pin selectable charge current (up to 100mA) and charge voltage ensure versatility while minimizing the numberof required external components.

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-lead2mm × 2mm LQFN Package

Typical applications

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

More information

Products

Log in now to view availability and request availability forecasts. LOGIN
Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Compliance
Size
L(µH)
IR(A)
RDC max.(mΩ)
fres(MHz)
Q
P(W)
SamplesAvailability & Sample
Log in now to view availability and request availability forecasts. LOGIN
760308101208
SPECWE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 10 x 1.6 mm
Simu­lation
Availability
–
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
–Check availability
760308101216
SPECWE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 6 x 2 mm
Simu­lation
Availability
–
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 6 x 2 mm 
Inductance7.2 µH
Rated Current0.8 A
DC Resistance450 mΩ
Self Resonant Frequency32 MHz
Q-Factor10 
Power Capability [1]5 W
–Check availability
760308101220
SPECWE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 17 x 0.8 mm
Simu­lation
Availability
–
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 17 x 0.8 mm 
Inductance12.6 µH
Rated Current1.1 A
DC Resistance360 mΩ
Self Resonant Frequency19 MHz
Q-Factor20 
Power Capability [1]20 W
–Check availability