LTC3553
RECOMMENDED FOR NEW DESIGNSMicropower USB Power Manager With Li-Ion Charger, LDO and Buck Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $3.45
Overview
- 12μA Standby Mode Quiescent Current (All Outputs On)
- Seamless Transition Between Input Power Sources: Li-Ion/Polymer Battery and USB
- 240mΩ Internal Ideal Diode Provides Low Loss PowerPath™
- High Efficiency 200mA Buck Regulator
- 150mA Low Dropout (LDO) Linear Regulator
- Pushbutton On/Off Control With System Reset
- Full Featured Li-Ion/Polymer Battery Charger
- Programmable Charge Current With Thermal Limiting
- Instant-On Operation With Discharged Battery
- 3mm × 3mm × 0.75mm 20-Pin QFN Package
The LTC3553 is a micropower, highly integrated power management and battery charger IC for single-cell Li-Ion/Polymer battery applications. It includes a PowerPath manager with automatic load prioritization, a battery charger, an ideal diode and numerous internal protection features. Designed specifically for USB applications, the LTC3553 power manager automatically limits input current to a maximum of either 100mA or 500mA. Battery charge current is automatically reduced such that the sum of the load current and the charge current does not exceed the selected input current limit. The LTC3553 also includes a synchronous buck regulator, a low dropout linear regulator (LDO), and a pushbutton controller. With all supplies enabled in standby mode, the quiescent current drawn from the battery is only 12μA. The LTC3553 is available in a 3mm × 3mm × 0.75mm 20-pin QFN package.
| Option | LDO | PGOOD | Hard Reset Time |
| LTC3553 | ON/OFF Control | No | 5 Seconds |
| LTC3553-2 | Always On | Yes | 14 Seconds |
Applications
- USB-Based Handheld Products
- Portable Li-Ion/Polymer Based Electronic Devices
- Wearable Electronics
- Low Power Medical Devices
Documentation
Data Sheet 1
User Guide 1
3rd Party Solutions 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3553EUD#PBF | 20-Lead QFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LTC3553EUD#TRPBF | 20-Lead QFN (3mm x 3mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Monitors & Fuel Gauges 1 | ||
| LTC2942 | Obsolete | Battery Gas Gauge with Temperature, Voltage Measurement |
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Hot Swap Controllers 1 | ||
|
LTC4362-1 LTC4362-2 |
1.2A Overvoltage/Overcurrent Protector | |
| Ideal Diodes and PowerPath Controllers 1 | ||
| LTC2955 | RECOMMENDED FOR NEW DESIGNS | Pushbutton On/Off Controller with Automatic Turn-On |
