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LINEAR TECHNOLOGY  LTC3555EUFD#PBF  USB Power Management, 3 Step Down DC/DC, Li-Ion/Polymer Charger, 4.35 V to 5.5 V in, QFN-28

LINEAR TECHNOLOGY LTC3555EUFD#PBF
Manufacturer Part No:
LTC3555EUFD#PBF
Order Code:
1663713
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC3555EUFD#PBF is a highly integrated USB compatible Power Management and Battery Charger IC for Li-Ion/Polymer battery applications. They include a high efficiency current limited switching PowerPath manager with automatic load prioritization, a battery charger, an ideal diode and three general purpose synchronous step-down switching regulators. The LTC3555 family limits input current to either 100 or 500mA for USB applications or 1A for adapter-powered applications. Unlike linear chargers, the LTC3555 family's 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 spaces. Two of the three general purpose switching regulators can provide up to 400mA and the third can deliver 1A. The entire product can be controlled via I2C or simple I/O. The LTC3555-1/LTC3555-3 versions offer "instant-on" power delivery to the portable product even with a very low battery voltage.
  • High efficiency switching PowerPath™ controller with Bat-Track™ adaptive output control
  • Full featured Li-ion/polymer battery charger
  • 1.5A Maximum charge current
  • Internal 180mR ideal diode + external ideal diode controller powers load in battery mode
  • Low no-load quiescent current when powered from BAT (<32µA)
  • Triple high efficiency step-down DC/DCs (1A/400mA/400mA IOUT)
  • All regulators operate at 2.25MHz
  • Dynamic voltage scaling on two outputs
  • I2C or independent enable, VOUT controls

Product Information

Supply Voltage:
5.5V
No. of Step-Down DC - DC Converters:
3
No. of LDO Regulators:
1
No. of Regulated Outputs:
4
Digital IC Case:
QFN
No. of Pins:
28Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Medical
  • Test & Measurement

Legislation and Environmental

Country of Origin:
Malaysia

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.0002

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