EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC2921CGN#PBF

Description
Processor Supervisor 4.35V 5 16-Pin SSOP N Tube
File Size311KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC2921CGN#PBF Overview

Processor Supervisor 4.35V 5 16-Pin SSOP N Tube

LTC2921CGN#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
Number of Supervisors5
Typical Reset Threshold Voltage (V)4.35
Maximum Reset Threshold Voltage (V)6.13
Monitored Voltage (V)3.3|5|2.5
Minimum Operating Supply Voltage (V)4.5
Typical Operating Supply Voltage (V)5
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Current (uA)2000(Typ)
Power Fail DetectionNo
Watchdog TimerNo
Manual ResetNo
Chip Enable SignalsNo
Battery Backup SwitchingNo
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
PackagingTube
TypePower Supply Tracker
Pin Count16
Standard Package NameSOP
Supplier PackageSSOP N
MountingSurface Mount
Package Height1.5(Max)
Package Length4.98(Max)
Package Width3.99(Max)
PCB changed16
Lead ShapeGull-wing
LTC2921/LTC2922 Series
Power Supply Tracker
with Input Monitors
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Tracks Multiple Supplies with MOSFET Switches
Monitors 5 Input Voltages Including V
CC
Guaranteed Threshold Accuracy:
±1%
at 0.5V
Automatic Remote Sense Switching
Adjustable Supply Ramp Rate
Overvoltage Monitor
Adjustable Electronic Circuit Breaker
Adjustable Power-Good Delay
Available for V
CC
Supply Voltages of 5V, 3.3V and 2.5V
Available in 16-Pin Narrow SSOP (LTC2921 Series)
and 20-Pin TSSOP (LTC2922 Series)
The LTC
®
2921 and LTC2922 monitor up to five supplies
and force them to track on power-up in multiple supply
systems. Using external N-channel pass transistors, the
supplies can be ramped up at an adjustable rate. Auto-
matic remote sense switching allows the DC/DC convert-
ers to compensate for series voltage drops in the wiring.
An incorrect level on one or more of the supplies triggers
disconnect of all supplies. Tight 1% accuracy and glitch
immunity on the low 0.5V monitoring level ensure no false
error disconnects.
The LTC2921 and LTC2922 each feature an adjustable
electronic circuit breaker to protect the V
CC
supply against
short circuits. Capacitance at the TIMER pin programs the
delays in the monitoring sequence.
The LTC2921 includes three remote sense switches in a
16-pin narrow SSOP package, while the LTC2922 includes
five remote sense switches in a 20-pin TSSOP package.
Both parts are available for V
CC
supply voltages of 5V,
3.3V, and 2.5V.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Desktop Computers
Plug-In Cards
Telecom Infrastructure
Supply Sequencing
Instruments
TYPICAL APPLICATIO
V
OUT
V
FB
DC/DC
CONVERTER
V
OUT
V
FB
DC/DC
CONVERTER
V
OUT
V
FB
DC/DC
CONVERTER
243k
169k
2.5V SUPPLY
100Ω
3.3V SUPPLY
100Ω
5V SUPPLY
100Ω
Three-Supply Tracker and Monitor (5V, 3.3V, 2.5V)
WSL1206
0.05Ω
Si2316DS
10Ω
3.3V
LOAD
5V
LOAD
Si2316DS
10Ω
2.5V SUPPLY
2V/DIV
5V LOAD
3.3V LOAD
OUTPUTS
2V/DIV
2.5V LOAD
Si2316DS
10Ω
2.5V
LOAD
V
CC
V1
V2
V3
V4
S1
S2
S3
GND
CIRCUIT BREAKER
RESET CONTROL
SENSE
GATE
0.47µF
PG
D1
D2
D3
TIMER
0.22µF
4.7k
PG
2V/DIV
49.9k
Si1012R
CBRST
100k
49.9k
LTC2921
RESET
t
GATE
~ 500ms
t
TIMER
~ 130ms
2921/22 TA01
U
Load Voltage Ramp-Up and
Power-Good Activation
100ms/DIV
5V SUPPLY AT 5V
3.3V SUPPLY AT 3.3V
2921/22 TA01b
U
U
29212fa
1
20 truths about women dating men
If you are not happy with him now, you will be even more unhappy after marriage. We are using a certificate to gamble a lifetime of happiness. How can we increase our chances of winning this gamble? H...
henryli2008 Talking
IAR IDE for MSP430, 8051, ARM and other platforms
IAR was used as the development platform for MSP430 for a long time. A few days ago, a wireless monitoring project used Zigbee (CC2530), so I started using IAR as the development platform for 8051. So...
Aguilera Microcontroller MCU
Problems with SetupDiEnumDeviceInterfaces
32-bit applications are normal on 32-bit platforms, 64-bit applications are normal on 64-bit platforms, and 32-bit applications always return errors on 64-bit platforms. GetLastError return 259 == NO_...
nanxiangzi Embedded System
I am an intern and now I have to write a 15693 mode card reader
I am an intern and now I have to write a 15693 mode card reader, but I don't know what the mechanism is, how to process the card number, and what command to send to read the card. Please give me some ...
ja99 Embedded System
Chapter IV - Monolithic Difference Amplifiers
Chapter IV - Monolithic Difference Amplifiers...
安_然 Analog electronics
PIC microcontroller KIT2 emulator (Shenzhen Gelanrui Technology Co., Ltd.)
PIC KIT2 is a PIC microcontroller development tool that is fully compatible with the newly launched PICKIT 2 from Microchip. It can program almost all of Microchip's flash microcontrollers. It can als...
GLRDLANLAN Microchip MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1385  646  1697  1099  1832  28  13  35  23  37 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号