DocumentationDatasheet
Reliability Data
LT Journal
- September 2008 - Complete Power Solution for Digital Cameras and Other Complex Compact Portable Applications
- September 2008 - New Family of Integrated Power Controllers Combine Fast Battery Charging, PowerPath Control and Efficient DC/DC Converters in Less Than 20mm2
Press Release
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Features
Power Manager- High Efficiency Switching PowerPathTM Controller with Bat-TrackTM Adaptive Output Control and “Instant-On” Operation
- Programmable USB or Wall Current Limit (100mA/500mA/1A)
- Full Featured Li-Ion/Polymer Battery Charger with Float Voltage of 4.1V (LTC3586-1) or 4.2V (LTC3586) with 1.5A Maximum Charge Current
- Internal 180mΩ Ideal Diode Plus External Ideal Diode Controller Powers Load in Battery Mode
- <30μA No-Load Quiescent Current when Powered from BAT
- Dual High Efficiency Buck DC/DCs (400mA IOUT)
- High Efficiency Buck-Boost DC/DC (1A IOUT)
- High Efficiency Boost DC/DC (800mA IOUT)
- Compact (4mm × 6mm × 0.75mm) 38-Pin QFN Package
Typical Application
Description
The LTC3586/LTC3586-1 are highly integrated power management and battery charger ICs for Li-Ion/Polymer battery applications. They include a high efficiency current limited switching PowerPath manager with automatic load prioritization, battery charger, ideal diode, and four synchronous switching regulators (two bucks, one buck-boost and one boost). Designed specifically for USB applications, the LTC3586/LTC3586-1’s switching power manager automatically limits input current to a maximum of either 100mA or 500mA for USB applications or 1A for adapter-powered applications.
Unlike linear chargers, the LTC3586/LTC3586-1 switching architecture transmits nearly all of the power available from the USB port to the load with minimal loss and heat which eases thermal constraints in small places. The two buck regulators can provide up to 400mA each, the buck-boost can deliver 1A, and the boost delivers at least 800mA.
The LTC3586/LTC3586-1 are available in a low profile 0.75mm) 38-pin 4mm × 6mm QFN package.
| Options | Float Voltage (V) | Fault Pin Functionality | Boost Overvoltage Threshold (V) | Boost Overvoltage Hysteresis |
|---|---|---|---|---|
| LTC3586 | 4.2V | Bi-Directional with Latch | 5.3V | 300mV |
| LTC3586-1 | 4.1V | Bi-Directional with Latch | 5.3V | 300mV |
| LTC3586-2 | 4.2V | Output Only, No Latch | 5.5V | 100mV |
| LTC3586-3 | 4.1V | Output Only, No Latch | 5.5V | 100mV |
4x6 QFN-38
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC3586EUFE#PBF | QFN | 38 | E | $7.57 | $5.30 |
| LTC3586EUFE#TRPBF | QFN | 38 | E | $5.36 | |
| LTC3586EUFE-1#PBF | QFN | 38 | E | $7.57 | $5.30 |
| LTC3586EUFE-1#TRPBF | QFN | 38 | E | $5.36 | |
| LTC3586EUFE-2#PBF | QFN | 38 | E | $7.57 | $5.30 |
| LTC3586EUFE-2#TRPBF | QFN | 38 | E | $5.36 | |
| LTC3586EUFE-3#PBF | QFN | 38 | E | $7.57 | $5.30 |
| LTC3586EUFE-3#TRPBF | QFN | 38 | E | $5.36 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1306A | LTC3586EUFE Demo Board I High Efficiency USB Power Manager + Dual Buck + Boost + Buck-Boost DC/DC | $125.00 |