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参数资料
| 型号： | LTC693IS#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | PLASTIC, SOL-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 308K |
| 代理商： | LTC693IS#PBF |
1
LTC692/LTC693
s
UL Recognized
s
Guaranteed Reset Assertion at VCC = 1V
s
1.5mA Maximum Supply Current
s
Fast (35ns Max.) On-Board Gating of RAM Chip
Enable Signals
s
SO8 and SO16 Packaging
s
4.40V Precision Voltage Monitor
s
Power OK/Reset Time Delay:
200ms or Adjustable
s
Minimum External Component Count
s
1
A Maximum Standby Current
s
Voltage Monitor for Power Fail or
Low Battery Warning
s
Thermal Limiting
s
Performance Specified Over Temperature
s
Superior Upgrade for MAX690 Family
The LTC692/LTC693 provide complete power supply moni-
toring and battery control functions for microprocessor
reset, battery backup, 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 exter-
nal memory. In addition, the RESET output is guaranteed
to remain logic low even with VCC as low as 1V.
The LTC692/LTC693 power 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
LTC692/LTC963 provide 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.
D
U
ESCRIPTIO
S
FEATURE
U
A
O
PPLICATI
TYPICAL
RESET Output Voltage vs
Supply Voltage
+
ADJ
VIN
VOUT
10
F
VIN ≥ 7.5V
5V
100
F
0.1
F
P NMI
P
POWER
POWER TO
CMOS RAM
I/O LINE
P RESET
P
SYSTEM
0.1F
3V
51k
10k
LTC692/3 TA01
LT1086-5
MICROPROCESSOR RESET, BATTERY BACKUP, POWER FAILURE
WARNING AND WATCHDOG TIMING ARE ALL IN A SINGLE CHIP
FOR MICROPROCESSOR SYSTEMS.
LTC692
LTC693
VBATT
PFI
WDI
RESET
PFO
VOUT
VCC
GND
0.1
F
100
Microprocessor
Supervisory Circuits
SUPPLY VOLTAGE (V)
0
RESET
OUTPUT
VOLTAGE
(V)
3
4
5
4
2
1
0
1
2
3
5
TA = 25°C
EXTERNAL PULL-UP = 10A
VBATT = 0V
LTC692/3 TA02
U
S
A
O
PPLICATI
s
Critical
P Power Monitoring
s
Intelligent Instruments
s
Battery-Powered Computers and Controllers
s
Automotive Systems
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC694 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC6943 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Dual Precision Instrumentation Switched Capacitor Building Block |
| LTC694-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer |
| LTC6943CGN | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Dual Precision Instrumentation Switched Capacitor Building Block |
| LTC6943CGN#PBF | 功能描述:IC BUILDNG BLK SWCAP DUAL 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
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