LTC4091EDJC#TRPBF
ActiveLINEAR BATTERY CHARGER LI-ION/LI-POL 1500MA 4.1V/4.2V 22-PIN DFN EP T/R
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LTC4091EDJC#TRPBF
ActiveLINEAR BATTERY CHARGER LI-ION/LI-POL 1500MA 4.1V/4.2V 22-PIN DFN EP T/R
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC4091EDJC#TRPBF |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Battery Pack Voltage | 4.2 V |
| Charge Current - Max | 1.5 A |
| Fault Protection | Over Temperature |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 22-WFDFN Exposed Pad |
| Programmable Features | Timer |
| Supplier Device Package | 22-DFN (6x3) |
| Voltage - Supply (Max) [Max] | 36 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 10.45 | |
| 10 | $ 7.12 | |||
| 25 | $ 6.25 | |||
| 100 | $ 5.26 | |||
| 250 | $ 4.86 | |||
| Digi-Reel® | 1 | $ 10.45 | ||
| 10 | $ 7.12 | |||
| 25 | $ 6.25 | |||
| 100 | $ 5.26 | |||
| 250 | $ 4.86 | |||
| Tape & Reel (TR) | 2500 | $ 4.86 | ||
Description
General part information
LTC4091 Series
The LTC4091 is a 36V Li-Ion battery charger and power backup manager. The integrated step-down switching regulator charges a battery from a primary power source while providing power to the load. If primary power is lost, the load is seamlessly transitioned to the backup Li-ion/polymer battery. To protect sensitive downstream loads, the maximum output voltage is 4.45V.The LTC4091 provides an adaptive output that tracks the battery voltage for high efficiency charging. The charge current is programmable and an end-of-charge status output (CHRG) indicates full charge. Also featured is a termination timer and an NTC thermistor input used to monitor battery temperature while charging.During backup, an internal 75mΩ ideal diode connects the battery to the load. An optional external ideal diode FET driver is available to reduce the voltage drop even further. 4.1V or 4.2V battery charge voltages can be selected.ApplicationsFleet and Asset TrackingAutomotive GPS Data LoggersAutomotive Telematics SystemsBattery Backup Systems
Documents
Technical documentation and resources