參數(shù)資料
型號(hào)： LTC694IN8-3.3
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 3.3V Microprocessor Supervisory Circuits
中文描述： 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8
封裝： 0.300 INCH, PLASTIC, DIP-8
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 141K
代理商： LTC694IN8-3.3
1
LTC 690/LTC 691
LTC 694/LTC 695
Microprocessor
Supervisory C ircuits
ADJ
V
IN
V
OUT
10
μ
F
V
IN
≥
7.5V
5V
100
μ
F
0.1
μ
F
μ
P NMI
μ
P
POWER
POWER TO
CMOS RAM
I/O LINE
μ
P RESET
μ
P
SYSTEM
0.1
μ
F
3V
51k
10k
690 TA01
LT
1086-5
MICROPROCESSOR RESET, BATTERY BACK-UP, POWER FAILURE
WARNING AND WATCHDOG TIMING ARE ALL IN A SINGLE CHIP
FOR MICROPROCESSOR SYSTEMS
LTC690/LTC691
LTC694/LTC695
V
BATT
PFI
WDI
RESET
PFO
V
OUT
V
CC
GND
0.1
μ
F
100
+
+
RESET Output Voltage vs
Supply Voltage
I
UL Recognized File # E145770
I
GuaranteedReset Assertion at V
CC
= 1V
I
1.5mA Maximum Supply Current
I
Fast (35ns Max) Onboard Gating of RAM Chip
Enable Signals
I
SO-8 and S16 Packaging
I
4.65V Precision Voltage Monitor
I
Power OK/Reset Time Delay: 50ms, 200ms
or Adjustable
I
Minimum External Component Count
I
1
μ
A Maximum Standby Current
I
Voltage Monitor for Power-Fail
or Low-Battery Warning
I
Thermal Limiting
I
Performance Specified Over Temperature
I
Superior Upgrade for MAX690 Family
The LTC
690 family provides complete power supply
monitoring and battery control functions for microproces-
sor reset, battery back-up, CMOS RAM write protection,
power failure warning and watchdog timing. A precise
internal voltage reference and comparator circuit monitor
the power supply line. When an out-of-tolerance condition
occurs, the reset outputs are forced to active states and the
chip enable output unconditionally write-protects external
memory. In addition, the RESET output is guaranteed to
remain logic low even with V
CC
as low as 1V.
The LTC690 family powers the active CMOS RAMs with a
charge pumped NMOS power switch to achieve low drop-
out and low supply current. When primary power is lost,
auxiliary power, connected to the battery input pin, powers
the RAMs in standby through an efficient PMOS switch.
For an early warning of impending power failure, the
LTC690 family provides an internal comparator with a
user-defined threshold. An internal watchdog timer is also
available, which forces the reset pins to active states when
the watchdog input is not toggled prior to a preset time-out
period.
I
Critical
μ
P Power Monitoring
I
Intelligent Instruments
I
Battery-Powered Computers and Controllers
I
Automotive Systems
SUPPLY VOLTAGE (V)
0
R
3
4
5
4
2
1
0
1
2
3
5
T
= 25
°
C
EXTERNAL PULL-UP = 10
μ
A
V
BATT
= 0V
690 TA02
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
相關(guān)PDF資料
PDF描述
LTC691IN Microprocessor Supervisory Circuits
LTC694I-3.3 3.3V Microprocessor Supervisory Circuits
LTC690C Microprocessor Supervisory Circuits
LTC692C Microprocessor Supervisory Circuits
LTC692IN8 Aluminum Electrolytic Capacitor; Capacitor Type:General Purpose; Voltage Rating:6.3VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-55 C to +105 C; Capacitance:1000uF RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC694IN8PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits
LTC694IN8-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits
LTC694IS-3.3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Supply Supervisor
LTC694IS8 功能描述:IC MPU SUPERVISORY CIRCUIT 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開(kāi)路漏極或開(kāi)路集電極 復(fù)位:高有效 復(fù)位超時(shí):- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT
LTC694IS8#PBF 功能描述:IC MPU SUPERVISORY CIRCUIT 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:簡(jiǎn)單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:開(kāi)路漏極或開(kāi)路集電極 復(fù)位:高有效 復(fù)位超時(shí):- 電壓 - 閥值:1.8V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:6-TSOP（0.059"，1.50mm 寬）5 引線 供應(yīng)商設(shè)備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT
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