Datasheet Linear Technology LTC3577EUFF#PBF

Manufacturer	Linear Technology
Series	LTC3577
Part Number	LTC3577EUFF#PBF

1 - Highly Integrated 6-Channel Portable PMIC

Datasheets

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PDF, 651 Kb, Revision: A, File uploaded: Jan 26, 2017

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Packaging

Package	4x7 QFN-44
Package Code	UFF
Package Index	05-08-1762

Parametrics

Battery Chemistry	Li-Ion, Li-Polymer
Buck Output Current	0.5, 0.5, 0.8 A
Demo Boards	DC1402A-A,DC1402A-B
Export Control	no
Features	PowerPath, Overvoltage Protection, Triple Buck, Dual LDO, I2C, Push Button Reset, LED Driver
Float Voltage	4.2V V
LDO Output Current	0.15, 0.15 A
Max Charge Current	1.5 A
Number of Cells	1
Number of Outputs	6
Operating Temperature Range	0 to 85 °C
PowerPath	Linear PowerPath, 200mв„¦ Internal Ideal Diode
Type of Charger	Linear
Vin Max	5.5 V
Vin Min	4.35 V

Eco Plan

RoHS

Compliant

Other Options

LTC3577-1

Design Notes

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One Device Replaces Battery Charger, Pushbutton Controller, LED Driver and Voltage Regulator ICs in Portable Electronics &mdash DN470
PDF, 76 Kb, File published: Jul 22, 2009
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One Device Replaces Battery Charger, Pushbutton Controller,
LED Driver and Voltage Regulator ICs in Portable Electronics
Design Note 470
Marty Merchant
Introduction
The LTCВ®3577/LTC3577-1 integrates a number of portable
device power management functions into one IC, reducing
complexity, cost and board area in handheld devices. The
major functions include: Five voltage regulators to power memory, I/O, PLL,
CODEC, DSP or a touch-screen controller A battery charger and PowerPathв„ў manager An LED driver for backlighting an LCD display, keypad
and/or buttons Pushbutton control for debouncing the on/off button,
supply sequencing and allowing end-users to force a
hard reset when the microcontroller is not responding
By combining these functions, the LTC3577/LTC3577-1
does more than just reduce the number of required ICs; it
solves the problems of functional interoperabilityвЂ”where
otherwise separate features operate together for improved
end-product performance. For instance, when the power
input is from USB, the limited input current is logically
distributed among the power supply outputs and the
battery charger. Status output indicates when the pushbutton is depressed,
allowing the microprocessor to alter operation or begin
the power-down sequence. Holding the pushbutton down …

Articles

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All-in-One Power for Portables: Single IC Replaces Battery Charger, Pushbutton Controller, LED Driver and Five Voltage Regulator ICs &mdash LT Journal
PDF, 138 Kb, File published: Dec 1, 2009
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LвЂ‰DESIGN IDEAS All-in-One Power for Portables:
Single IC Replaces Battery Charger,
Pushbutton Controller, LED Driver and
Five Voltage Regulator ICs by Marty Merchant
Introduction Pushbutton Control The LTC3577/LTC3577-1 integrates
a number of portable device power
management functions into one IC,
reducing complexity, cost and board
area in handheld devices. The major
functions include:
q Five voltage regulators to power
memory, I/O, PLL, CODEC, DSP
or a touch-screen controller
q A battery charger and
PowerPathв„ў manager
q An LED driver for backlighting
an LCD display, keypad and/or
buttons
q Pushbutton control for
debouncing the on/off button,
supply sequencing and allowing
end-users to force a hard reset
when the microcontroller is not …

Model Line

Series: LTC3577 (2)

LTC3577EUFF#PBF LTC3577EUFF#TRPBF

Manufacturer's Classification

Power Management > PMIC & Multifunction > PMIC (DC/DC, PowerPath and Battery Charger)

Other Names:

LTC3577EUFFPBF, LTC3577EUFF PBF