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LTC2900-2CDD Datasheet

  • LTC2900-2CDD

  • Programmable Quad Supply Monitor with Adjustable Reset Timer

  • 16頁(yè)

  • LINER

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LTC2900
Programmable Quad Supply
Monitor with Adjustable Reset Timer
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Simultaneously Monitors Four Supplies
16 User Selectable Combinations of 5V, 3.3V, 3V,
2.5V, 1.8V, 1.5V and/or
鹵Adjustable
Voltage
Thresholds
Guaranteed Threshold Accuracy:
鹵1.5%
of
Monitored Voltage Over Temperature
Low Supply Current: 43碌A(chǔ) Typ
Adjustable Reset Time
Small MSOP and 3mm
脳
3mm DFN Packages
Manual Reset Pin
Open-Drain RST Output (LTC2900-1)
Push-Pull RST Output (LTC2900-2)
Power Supply Glitch Immunity
Guaranteed RST for V
CC
鈮?/div>
1V
The LTC
廬
2900 is a programmable supply monitor for
systems with up to four supply voltages. One of 16 preset
or adjustable voltage monitor combinations can be se-
lected using an external resistor divider connected to the
program pin. The preset voltage thresholds are accurate
to
鹵1.5%
over temperature.
The reset delay time is adjustable using an external
capacitor and the manual reset input may be used with a
momentary switch to issue reset pulses with programmed
duration. Tight voltage threshold accuracy and glitch
immunity ensure reliable reset operation without false
triggering. The RST output is guaranteed to be in the
correct state for V
CC
down to 1V. The LTC2900-1 features
an open-drain RST output, while the LTC2900-2 has a
push-pull RST output.
The 43碌A(chǔ) supply current makes the LTC2900 ideal for
power conscious systems and it may be configured to
monitor less than four inputs. The parts are available in
the 10-lead MSOP and the 10-lead 3mm
脳
3mm DFN
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Desktop and Notebook Computers
Multivoltage Systems
Telecom Equipment
Portable Battery-Powered Equipment
Network Servers
TYPICAL APPLICATIO
Quad Supply Monitor (5V, 3.3V, 2.5V, 1.8V)
5V
3.3V
DC/DC
CONVERTER
2.5V
1.8V
V3
V4
V1
LTC2900-2
V2
V
REF
V
PG
GND
RST
PBR
CRT
C
RT
47nF
t
RST
= 216ms
2900f
C1
0.1碌F
C2
0.1碌F
R1
59k
1%
R2
40.2k
1%
PUSH-BUTTON
RESET
2900 TA01
U
SYSTEM
LOGIC
U
U
1

LTC2900-2CDD 產(chǎn)品屬性

  • LTC2900

  • 121

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • -

  • 多壓監(jiān)控器

  • 4

  • 推挽式，圖騰柱

  • 低有效

  • 最小為 5 ms

  • 16 種可選閥值組合

  • 0°C ~ 70°C

  • 表面貼裝

  • 10-WFDFN 裸露焊盤(pán)

  • 10-DFN（3x3）

  • 管件

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