Datasheet Linear Technology LTC1728-1.8 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC1728-1.8

Monitores de triple suministro de precisión Micropower en paquetes MSOP de 8 derivaciones y SOT-23 de 5 derivaciones

Hojas de datos

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PDF, 332 Kb, Revisión: D, Archivo subido: oct 24, 2017

Extracto del documento

Precios

Embalaje

	LTC1728ES5-1.8#PBF	LTC1728ES5-1.8#TRMPBF	LTC1728ES5-1.8#TRPBF
N	1	2	3
Package	SOT-23 Dibujo del esquema del paquete	SOT-23 Dibujo del esquema del paquete	SOT-23 Dibujo del esquema del paquete
Package Code	S5	S5	S5
Package Index	05-08-1635	05-08-1635	05-08-1635
Pin Count	5	5	5

Paramétricos

Parameters / Models	LTC1728ES5-1.8#PBF	LTC1728ES5-1.8#TRMPBF	LTC1728ES5-1.8#TRPBF
Design Tools	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no
Features	Supervisor	Supervisor	Supervisor
Isupply, µA	15	15	15
Minimum Reset Level, V	1	1	1
Number of Supplies	3	3	3
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85
Power Fail Warning	no	no	no
Power Up/Down Reset	yes	yes	yes
Reset Pulse Width	200ms	200ms	200ms
Reset Voltage	3V	3V	3V
Second Reset Voltage	1.8V	1.8V	1.8V
Third Reset Voltage	Adj	Adj	Adj
Threshold Accuracy, %	1.5	1.5	1.5
Vs Max, V	7	7	7
Watchdog Timer	no	no	no

Plan ecológico

	LTC1728ES5-1.8#PBF	LTC1728ES5-1.8#TRMPBF	LTC1728ES5-1.8#TRPBF
RoHS	Obediente	Obediente	Obediente

Otras opciones

LTC1727-2.5 LTC1727-5 LTC1728-2.5 LTC1728-3.3 LTC1728-5

Artículos

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Hot Swap Controller with Power-Up Timeout Function Simplifies Hot Swapping Boards with Multiple Power Supplies &mdash LT Journal
PDF, 204 Kb, Archivo publicado: dic 1, 2003
Extracto del documento
DESIGN FEATURES Hot Swap Controller with
Power-Up Timeout Function
Simplifies Hot Swapping Boards
with Multiple Power Supplies
by Anthony Ng and YK Sim Introduction
The LTC4212 is a Hot Swap controller that allows safe board insertion
and removal from a live backplane.
It features a supply range of 2.5V to
16.5V, programmable soft-start with
inrush current limiting, automatic retry or latched mode operation, a high
side drive for an external N-channel
MOSFET and dual level overcurrent
fault protection.
Unlike many Hot Swap controllers,
the LTC4212 does not monitor the load
side of the MOSFET directly. Instead,
the LTC4212 interfaces with external
power supply monitor ICs or directly
with the PGOOD pin of a switching
regulator. This permits the LTC4212 to
monitor any number of supplies on the
board. It has a power-up timeout function that disconnects a card from the
backplane supply when the monitored …
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Ramp Three Supplies with a Supply Monitor and Hot Swap Controller &mdash LT Journal
PDF, 235 Kb, Archivo publicado: mayo 1, 2001
Extracto del documento
DESIGN IDEAS Ramp Three Supplies with a Supply
Monitor and Hot Swap Controller
by Mitchell Lee
Many digital systems with multiple
supply voltages require simultaneous
ramping of supplies at power up. Since
the power supply usually consists of
separate regulators for each voltage,
it is impossible to guarantee simultaneity of output. The circuit shown in
Figure 1 ramps the outputs of three
supplies and ensures tracking at
power up and during recovery from a
fault.
Regulators invariably start up at
different rates and different times
based on current capability, filter
capacitance and loop characteristics,
so there are no guarantees as to how
or when the outputs will rise to their
respective voltages. In this case, an
LTC1728-2.5 triple supply monitor
keeps watch over each of three regulated supplies (1.8V, 2.5V and 3.3V).
continued on page 27 Q1 1.8V/15A …

Linea modelo

Serie: LTC1728-1.8 (3)

LTC1728ES5-1.8#PBF LTC1728ES5-1.8#TRMPBF LTC1728ES5-1.8#TRPBF

Clasificación del fabricante

Monitor, Control and Protection > Supervisory Circuits > Triple Supply Monitors
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) System Monitor