LTC4088-1
LTC4088-2

PRODUCTION

High Efficiency Battery Charger/USB Power Manager with Regulated Output Voltage

Part Models: 4
1ku List Price: Starting From $2.66

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Overview

Switching Regulator Makes Optimal Use of Limited Power Available from USB Port to Charge Battery and Power Application
180mΩ Internal Ideal Diode Plus External Ideal Diode Controller Seamlessly Provide Low Loss Power Path When Input Power is Limited or Unavailable
Automatic Charge Current Reduction Maintains 3.6V Minimum V_OUT
Full Featured Li-Ion/Polymer Battery Charger
V_BUS Operating Range: 4.25V to 5.5V (7V Absolute Maximum—Transient)

1.2A Maximum Input Current Limit
1.5A Maximum Charge Current with Thermal Limiting
Bat-Track Adaptive Output Control
Slew Control Reduces Switching EMI
Low Profile (0.75mm) 14-Lead 4mm × 3mm DFN Package

The LTC4088-1/LTC4088-2 is a high efficiency USB PowerPath^™ controller and Li-Ion/Polymer battery charger. It includes a synchronous switching input regulator, a full-featured battery charger and an ideal diode. Designed specifically for USB applications, the LTC4088-1/LTC4088-2's switching regulator automatically limits its input current to either 100mA, 500mA or 1A via logic control. The LTC4088-1 powers-up with the charger off; the LTC4088-2 powers-up with the charger on.

The switching input stage provides power to V_OUT where power sharing between the application circuit and the battery charger is managed. Charge current is automatically reduced to maintain a regulated 3.6V V_OUT during low-battery conditions. As the battery is charged, V_OUT tracks V_BAT for high efficiency charging. This feature allows the LTC4088-1/LTC4088-2 to provide more power to the application and eases thermal issues in constrained applications.

An ideal diode ensures that system power is available from the battery when the input current limit is reached or if the USB or wall supply is removed. The LTC4088-1/LTC4088-2 is available in the low profile 14-Lead 4mm × 3mm × 0.75mm DFN surface mount package.


	Input Logic Truth Table	Automatic Charge Current Reduction	3.3V LDO
LTC4088	Battery charger enabled with all logic inputs grounded	No	Yes
LTC4088-1	Battery charger enabled with all logic inputs grounded	Yes	No
LTC4088-2	Battery charger enabled with all logic inputs grounded	Yes	No

Applications

Media Players
Digital Cameras
GPS
PDAs
Smart Phones

Part Models: 4
1ku List Price: Starting From $2.66

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
LTC4088EDE-1#PBF	14-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4088EDE-1#TRPBF	14-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4088EDE-2#PBF	14-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4088EDE-2#TRPBF	14-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC4088EDE-1#PBF	PRODUCTION
LTC4088EDE-1#TRPBF	PRODUCTION
LTC4088EDE-2#PBF	PRODUCTION
LTC4088EDE-2#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Monitors & Fuel Gauges 1
LTC2942-1	Obsolete	1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement
Interface Transceivers & Isolators 1
LTM2884	PRODUCTION	Isolated USB Transceiver with Isolated Power
Protection Switches & Controllers 2
LTC4361-1 LTC4361-2		Overvoltage/Overcurrent Protection Controller
LTC2955	RECOMMENDED FOR NEW DESIGNS	Pushbutton On/Off Controller with Automatic Turn-On