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Overview
| Topology | Wireless Power Transfer |
| Input voltage | 4.5-5 V |
| Switching frequency | 50-10000 kHz |
| Output 1 | 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
- 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
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Compliance | Size | L (µH) | IR (A) | RDC max. (mΩ) | fres (MHz) | Q (%) | P (W) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 760308101104 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-WPCC Wireless Power Transfer Transmitter Coil | works with Qi Tx IC's | Ø 20 x 2.8 mm | 6.8 | 2.5 | 130 | 20 | 42 | 50 | ||
 | 760308101220 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 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 | |
|---|---|---|---|
| 760308101104 | SPEC | |
| 760308101220 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Compliance | Size | L (µH) | IR (A) | RDC max. (mΩ) | fres (MHz) | Q (%) | P (W) | Samples |
|---|
