LTC3577
LTC3577-1

PRODUCTION

Highly Integrated 6-Channel Portable PMIC

Part Models: 4
1ku List Price: Starting From $5.90

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Part Details

Full Featured Li-Ion/Polymer Charger/PowerPath^™ Controller with Instant-On Operation
Triple Adjustable High Efficiency Step-Down Switching Regulators (800mA, 500mA, 500mA I_OUT)
6μA Battery Drain Current in Hard Reset
Bat-Track^™ Control for External HV Buck DC/DCs
I²C Adjustable SW Slew Rates for EMI Reduction
High Temperature Battery Voltage Reduction Improves Safety and Reliability
Overvoltage Protection for USB (V_BUS)/Wall Inputs
Provides Protection to 30V
Integrated 40V Series LED Backlight Driver with 60dB
Brightness Control and Gradation via I²C
1.5A Maximum Charge Current with Thermal Limiting
Battery Float Voltage:
- 4.2V (LTC3577)
- 4.1V (LTC3577-1)
Pushbutton On/Off Control with System Reset
Dual 150mA Current Limited LDOs
Small 4mm × 7mm 44-Pin QFN Package

The LTC3577 is a highly integrated power management IC for single cell Li-Ion/Polymer battery applications. It includes a PowerPath manager with automatic load prioritization, a battery charger, an ideal diode, input overvoltage protection and numerous other internal protection features. The LTC3577 is designed to accurately charge from current limited supplies such as USB by automatically reducing charge current such that the sum of the load current and the charge current does not exceed the programmed input current limit (100mA or 500mA modes). The LTC3577 reduces the battery voltage at elevated temperatures to improve safety and reliability. Efficient high current charging from supplies up to 38V is available using the on-chip Bat-Track controller. The LTC3577 also includes a pushbutton input to control the three synchronous step-down switching regulators and system reset. The onboard LED backlight boost circuitry can drive up to 10 series LEDs and includes versatile digital dimming via I²C input. The I²C input also controls two 150mA LDOs as well as other operating modes and status read back. The LTC3577 is available in a low profile 4mm × 7mm × 0.75mm 44-pin QFN package.


	BatTrack	Float Voltage
LTC3577	Yes	4.2V
LTC3577-1	Yes	4.1V
LTC3577-3	No	4.2V
LTC3577-4	No	4.1V

Applications

PNDs, DMB/DVB-H; Digital/Satellite Radio;
Media Players
Portable Industrial/Medical Products
Universal Remotes, Photo Viewers
Other USB-Based Handheld Products

Part Models: 4
1ku List Price: Starting From $5.90

Documentation

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
LTC3577EUFF#PBF	44-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3577EUFF#TRPBF	44-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3577EUFF-1#PBF	44-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3577EUFF-1#TRPBF	44-Lead QFN (4mm x 7mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Fuel Gauge and Coulomb Counter 1
LTC2942-1	Obsolete	1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement
Digital Temperature Sensors 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor
Dual-Supply Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Low Voltage Hot Swap Controllers 1
LTC4362-1 LTC4362-2		1.2A Overvoltage/Overcurrent Protector

Evaluation Kits

LTC3577EUFF-1 Demo Board | PMIC, 3 Bucks, 2 LDOs, Boost, Battery Charger, Etc. 1.6V ≤ VIN ≤ 5.5V, Multiple VOUTs

Buy Now View Details

Product Details

Demo Circuit 1402 is a Highly Integrated 6-Channel Portable PMIC featuring the LTC3577 (DC1402A-A) and the LTC3577-1 (DC1402A-B), which include a push button controller, two 150mA LDOs, three synchronous buck converters (800mA, 500mA, 500mA), a Li-Ion battery charger, a Power-Path controller, and high voltage buck controller interface that allows the board to control a separate LTC high voltage buck converter demo board to drive an LED (included with the demo board). The LTC3577's battery charger has a 4.2V float voltage while the LTC3577-1 has a 4.1V float voltage. The board can be power with a 1.6V to 5.5V DC input supply, a USB input or a 5V wall adapter. Do not look directly at the operating LED as this circuit produces light that can damage eyes.

Resources

DC1402A - Design Files
1.00M

DC1402A - Demo Manual
964.00K

DC1402A - Schematic
105.00K

LTC3577EUFF Demo Board | PMIC, 3 Bucks, 2 LDOs, Boost, Battery Charger, Etc. 1.6V ≤ VIN ≤ 5.5V, Multiple VOUTs

Buy Now View Details

Product Details

Demo Circuit 1402 is a Highly Integrated 6-Channel Portable PMIC featuring the LTC3577 and LTC3577-1, which include a push button controller, two 150mA LDOs, three synchronous buck converters (800mA, 500mA, 500mA), a Li-Ion battery charger, a Power-Path controller, and high voltage buck controller interface that allows the board to control a separate LTC high voltage buck converter demo board to drive an LED (included with the demo board). Do not look directly at the operating LED as this circuit produces light that can damage eyes. The board can be power with a 1.6V to 5.5V DC input supply, a USB input or a 5V wall adapter.

Resources

DC1402A - Design Files
1.00M

DC1402A - Demo Manual
964.00K

DC1402A - Schematic
105.00K

Latest Discussions

3 Years Ago

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 1

Hardware Ecosystem

Evaluation Kits

Product Details

Resources

Product Details

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