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參數資料
| 型號： | LTC694CN8-3.3#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數： | 6/20頁 |
| 文件大?。?/td> | 189K |
| 代理商： | LTC694CN8-3.3#TRPBF |
LTC694-3.3/LTC695-3.3
14
69453fb
WDI pin remains either high or low, reset pulses will be
issued every 1.6 seconds typically. The watchdog time
can be deactivated by floating the WDI pin. The timer
is also disabled when VCC falls below the reset voltage
threshold or VBATT.
The LTC695-3.3 provides an additional output (Watchdog
Output, WDO) which goes low if the watchdog timer is
allowed to time out and remains low until set high by the
next transition on the WDI pin. WDO is also set high when
VCC falls below the reset voltage threshold or VBATT.
APPLICATIONS INFORMATION
The LTC695-3.3 has two additional pins, OSC SEL and OSC
IN, which allow reset active time and watchdog timeout
period to be adjusted per Table 2. Several configurations
are shown in Figure 12.
OSC IN can be driven by an external clock signal or an
external capacitor can be connected between OSC IN and
GND when OSC SEL is forced low. In these configura-
tions, the nominal reset active time and watchdog timeout
period are determined by the number of clocks or set by
the formula in Table 2. When OSC SEL is high or floating,
t1 = RESET ACTIVE TIME
t2 = NORMAL WATCHDOG TIMEOUT PERIOD
t3 = WATCHDOG TIMEOUT PERIOD IMMEDIATELY
AFTER A RESET
VCC = 3.3V
t2
t3
t1
WDO
WDI
RESET
694/5-3.3 F11
Figure 11. Watchdog Timeout Period and Reset Active Time
EXTERNAL CLOCK
INTERNAL OSCILLATOR
1.6 SECOND WATCHDOG
INTERNAL OSCILLATOR
100ms WATCHDOG
EXTERNAL OSCILLATOR
GND
VCC
OSC SEL
OSC IN
3
4
8
7
VCC
FLOATING
OR HIGH
FLOATING
OR HIGH
LTC695-3.3
FLOATING
OR HIGH
LTC695-3.3
694/5-3.3 F12
3.3V
Figure 12. Oscillator Configurations
相關PDF資料 |
PDF描述 |
|---|---|
| LTC695CN-3.3#TRPBF | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16 |
| LTC695IS | 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| LTC691IS | 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| LTC691CS | 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| LTC6992HDCB-2#TRPBF | 0.02 A SWITCHING CONTROLLER, PDSO6 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC694CN8PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC694CN8-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC694CS-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 |
| LTC694CS8 | 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:- 標準包裝:1 系列:- 類型:簡單復位/加電復位 監(jiān)視電壓數目:1 輸出:開路漏極或開路集電極 復位:高有效 復位超時:- 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 供應商設備封裝:5-TSOP 包裝:剪切帶 (CT) 其它名稱:NCP301HSN18T1GOSCT |
| LTC694CS8#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:- 其它有關文件:STM6905 View All Specifications 標準包裝:1 系列:- 類型:多壓監(jiān)控器 監(jiān)視電壓數目:5 輸出:開路漏極或開路集電極 復位:低有效 復位超時:最小為 140 ms 電壓 - 閥值:2.188V，2.955V，可調，可調，可調 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-TSSOP 包裝:Digi-Reel® 產品目錄頁面:1197 (CN2011-ZH PDF) 其它名稱:497-8728-6 |
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