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参数资料
| 型号： | LTC693CS#TRPBF |
| 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： | 0.300 INCH, PLASTIC, SOP-16 |
| 文件页数： | 7/20页 |
| 文件大小： | 244K |
| 代理商： | LTC693CS#TRPBF |
LTC692/LTC693
15
0692fb
APPLICATIONS INFORMATION
The LTC693 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.
The LTC693 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 con-
gurations 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 congura-
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 oating,
the internal oscillator is enabled and the reset active time
is xed at 140ms minimum. OSC IN selects between the
1 second and 70ms minimum normal watchdog timeout
periods. In both cases, the timeout period immediately
after a reset is at least 1 second.
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
LTC693
FLOATING
OR HIGH
LTC693
692_3 F12
5V
Figure 12. Oscillator Congurations
Table 2. LTC693 Reset Active Time and Watchdog Timeout Selections
OSC SEL
OSC IN
WATCHDOG TIMEOUT PERIOD
RESET ACTIVE TIME
NORMAL (SHORT PERIOD)
IMMEDIATELY AFTER RESET
(LONG PERIOD)
LTC693
Low
External Clock Input
1024 clks
4096 clks
2048 clks
Low
External Capacitor*
400ms
47pF
C
1.6 sec
47pF
C
800ms
47pF
C
Floating or High
Low
100ms
1.6 sec
200ms
Floating or High
1.6 sec
200ms
184,000
C (pF)
*The nominal internal frequency is 10.24kHz. The nominal oscillator frequency with external capacitor is fOSC (Hz) =
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC693CSW | 功能描述:IC MPU SUPERVISRY CIRCUIT 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6717 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:2 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:1.11V，3.075V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 产品目录页面:1194 (CN2011-ZH PDF) 其它名称:497-7019-6 |
| LTC693CSW#PBF | 功能描述:IC MPU SUPERVISRY CIRCUIT 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6717 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:2 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:1.11V，3.075V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 产品目录页面:1194 (CN2011-ZH PDF) 其它名称:497-7019-6 |
| LTC693CSW#TR | 功能描述:IC SUPERVISORY CIRC MPU 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 |
| LTC693CSW#TRPBF | 功能描述:IC MPU SUPERVISRY CIRCUIT 16SOIC RoHS:是 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 |
| LTC693I | 制造商:LINER 制造商全称:Linear Technology 功能描述:Microprocessor Supervisory Circuits |
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