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参数资料
| 型号： | LTC695IN-3.3#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16 |
| 封装： | 0.300 INCH, LEAD FREE, PLASTIC, DIP-16 |
| 文件页数： | 6/20页 |
| 文件大小： | 189K |
| 代理商： | LTC695IN-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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC695INPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC695IN-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
| LTC695IS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor |
| LTC695IS-3.3 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Supply Supervisor |
| LTC695ISW | 功能描述:IC MPU SUPERVISRY CIRCUIT 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
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