Datasheet Linear Technology LTC3577 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3577

1 - PMIC portátil de 6 canales altamente integrado

Hojas de datos

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PDF, 651 Kb, Revisión: A, Archivo subido: enero 26, 2017

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Precios

Embalaje

	LTC3577EUFF#PBF	LTC3577EUFF#TRPBF
N	1	2
Package	4x7 QFN-44 Dibujo del esquema del paquete	4x7 QFN-44 Dibujo del esquema del paquete
Package Code	UFF	UFF
Package Index	05-08-1762	05-08-1762
Pin Count	44	44

Paramétricos

Parameters / Models	LTC3577EUFF#PBF	LTC3577EUFF#TRPBF
Battery Chemistry	Li-Ion, Li-Polymer	Li-Ion, Li-Polymer
Buck Output Current, A	0.5, 0.5, 0.8	0.5, 0.5, 0.8
Demo Boards	DC1402A-A,DC1402A-B	DC1402A-A,DC1402A-B
Export Control	no	no
Features	PowerPath, Overvoltage Protection, Triple Buck, Dual LDO, I2C, Push Button Reset, LED Driver	PowerPath, Overvoltage Protection, Triple Buck, Dual LDO, I2C, Push Button Reset, LED Driver
Float Voltage, V	4.2V	4.2V
LDO Output Current, A	0.15, 0.15	0.15, 0.15
Max Charge Current, A	1.5	1.5
Number of Cells	1	1
Number of Outputs	6	6
Operating Temperature Range, °C	0 to 85	0 to 85
PowerPath	Linear PowerPath, 200mв„¦ Internal Ideal Diode	Linear PowerPath, 200mв„¦ Internal Ideal Diode
Type of Charger	Linear	Linear
Vin Max, V	5.5	5.5
Vin Min, V	4.35	4.35

Plan ecológico

	LTC3577EUFF#PBF	LTC3577EUFF#TRPBF
RoHS	Obediente	Obediente

Otras opciones

LTC3577-1

Notas de Diseño

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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, Archivo publicado: jul 22, 2009
Extracto del documento
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 …

Artículos

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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, Archivo publicado: dic 1, 2009
Extracto del documento
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 …

Linea modelo

Serie: LTC3577 (2)

LTC3577EUFF#PBF LTC3577EUFF#TRPBF

Clasificación del fabricante

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