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Overview
| Topology | Wireless Power Transfer |
| Input voltage | 3.3-5.5 V |
| Switching frequency | 50-10000 kHz |
| Output 1 | 3.4 V / 0.1 A |
| IC revision | A |
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
- Military Wearables, High End Wireless Headsets, Streaming Headsets with Bluetooth Connectivity, Virtual Reality Headsets, High End Remote Control, IoT Devices
- Medical Wireless Sensors
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Compliance | Size | L (µH) | IR (A) | RDC max. (mΩ) | fres (MHz) | Q | P (W) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 760308101208 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-WPCC Wireless Power Transfer Receiver Coil | works with Qi Rx IC's | Ø 10 x 1.6 mm | 13 | 0.8 | 500 | 26 | 17 | 15 | ||
 | 760308101216 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-WPCC Wireless Power Transfer Receiver Coil | works with Qi Rx IC's | Ø 6 x 2 mm | 7.2 | 0.8 | 450 | 32 | 10 | 5 | ||
 | 760308101220 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-WPCC Wireless Power Transfer Receiver Coil | works with Qi Rx IC's | Ø 17 x 0.8 mm | 12.6 | 1.1 | 340 | 19 | 20 | 20 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 760308101208 | SPEC | |
| 760308101216 | SPEC | |
| 760308101220 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Compliance | Size | L (µH) | IR (A) | RDC max. (mΩ) | fres (MHz) | Q | P (W) | Samples |
|---|