LTC4126EV-ADJ#TRPBF
ActiveWIRELESS LI-ION CHARGER WITH 1.2V STEP-DOWN DC/DC CONVERTER
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LTC4126EV-ADJ#TRPBF
ActiveWIRELESS LI-ION CHARGER WITH 1.2V STEP-DOWN DC/DC CONVERTER
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC4126EV-ADJ#TRPBF |
|---|---|
| Battery Chemistry | Lithium Ion |
| Battery Pack Voltage | 4.2 V |
| Charge Current - Max [Max] | 50 mA |
| Current - Charging | Constant |
| Fault Protection | Undervoltage |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -20 °C |
| Package / Case | 12-VFQFN Exposed Pad |
| Programmable Features | Current, Timer |
| Supplier Device Package | 12-LQFN (2x2) |
| Voltage - Supply (Max) | 5.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 2500 | $ 3.90 | |
Description
General part information
LTC4126-ADJ Series
The LTC4126-10 is a low-power wireless single-cell Li-Ion battery charger with an integrated step-down DC/ DC regulator. The step-down regulator is a low-noise multimode charge pump which is powered from the battery and provides a regulated 1.2V at the output. The switching frequency is set to either 50kHz or 75kHz depending on the mode to keep any switching noise out of the audible range.The LTC4126-10 charger is a full-featured constant-current constant-voltage Li-Ion battery charger with automatic recharge, automatic termination by safety timer, and battery temperature monitoring via an NTC pin. Charge current is fixed at 10mA with a 3-hour termination timer. Undervoltage protection disconnects the battery from all loads when the battery voltage is below 3.0V.The tiny 2mm × 2mm LQFN package and minimal external component count make the LTC4126-10 well suited for Li-Ion battery powered hearing aid applications and other low power portable devices where a small solution size is required.ApplicationsHearing AidsLow Power Li-Ion Powered DevicesWireless HeadsetsIoT Wearables