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LTC3550EDHC-1#PBF

Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter

Manufacturer:

Analog Devices Inc.
Mfr.Part #:

LTC3550EDHC-1#PBF
Datasheet:

LTC3550EDHC-1#PBF Datasheet (PDF)
Product:

Charge Management
Battery Type:

Lithium-ion, Lithium Polymer
Output Voltage:

4.2 V
Output Current:

600 mA
EDA/CAD Models:

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LTC3550EDHC-1#PBF General Description

The LTC3550-1 is a standalone linear charger with a 600mA monolithic synchronous buck converter. It is capable of charging a single-cell Li-Ion battery from both wall adapter and USB inputs. The charger automatically selects the appropriate power source for charging.

Key Features

Charges Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs
Automatic Input Power Detection and Selection
Charge Current Programmable Up to 950mA from Wall Adapter Input
High Efﬁciency 600mA Synchronous DC/DC Converter
No External MOSFET, Sense Resistor or Blocking Diode Needed
Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*
Preset Charge Voltage with ±0.6% Accuracy
Programmable Charge Current Termination
1.5MHz Constant Frequency Operation (Step-Down Converter)
18μA USB Suspend Current in Shutdown
Independent “Power Present” Status Outputs
Charge Status Output
Automatic Recharge
Available in a Thermally Enhanced, Low Proﬁle (0.75mm) 16-Lead (5mm × 3mm) DFN Package

Application

Cellular Telephones

Specifications

Product Category	Battery Management	Product	Charge Management
Battery Type	Lithium-ion, Lithium Polymer	Output Voltage	4.2 V
Output Current	600 mA	Operating Supply Voltage	8 V
Mounting Style	SMD/SMT	Series	LTC3550-1
Development Kit	-	Product Type	Battery Management
Factory Pack Quantity	73	Subcategory	PMIC - Power Management ICs
Unit Weight	0.001345 oz