参数资料
型号: MCP121T-475E/TT
厂商: Microchip Technology
文件页数: 1/28页
文件大小: 0K
描述: IC SUPERVISOR 4.63V LOW SOT-23B
标准包装: 1
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: 低有效
复位超时: 最小为 80 ms
电压 - 阀值: 4.63V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-236-3,SC-59,SOT-23-3
供应商设备封装: SOT-23-3
包装: 标准包装
产品目录页面: 661 (CN2011-ZH PDF)
其它名称: MCP121T-475E/TTDKR
MCP102/103/121/131
Micropower Voltage Supervisors
Features
Package Types
? Ultra low supply current: 1.75 μA
(steady-state max.)
? Precision monitoring options of:
- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V
SOT23-3/SC-70
RST 1
TO-92
and 4.63V
? Resets microcontroller in a power-loss event
? RST pin (Active-low):
- MCP121: Active-low, open-drain
V DD 2
3 V SS
RST
V DD V SS
- MCP131: Active-low, open-drain with internal
pull-up resistor
- MCP102 and MCP103: Active-low, push-pull
? Reset Delay Timer (120 ms delay, typ.)
? Available in SOT23-3, TO-92 and SC-70
packages
? Temperature Range:
- Extended: -40°C to +125°C
( except MCP1XX-195 )
- Industrial: -40°C to +85°C ( MCP1XX-195 only )
? Pb-free devices
Applications
SOT23-3/SC-70
V SS 1
3 V DD
RST 2
Block Diagram
V DD
? Critical Microcontroller and Microprocessor
Power-monitoring Applications
? Computers
Comparator
R (1)
? Intelligent Instruments
? Portable Battery-powered Equipment
+
Reset
Delay
Circuit
Output
Driver
RST
General Description
The MCP102/103/121/131 are voltage supervisor
devices designed to keep a microcontroller in reset
until the system voltage has reached and stabilized at
Band Gap
Reference
the proper level for reliable system operation. Table 1
shows the available features for these devices.
TABLE 1:
DEVICE FEATURES
V SS
Note 1: MCP131 Only
Device
Type
Output
Pull-up Resistor
Reset
Delay (typ)
Package Pinout
(Pin # 1, 2, 3)
Comment
MCP102 Push-pull
MCP103 Push-pull
No
No
120 ms
120 ms
RST, V DD , V SS
V SS , RST, V DD
MCP121 Open-drain External
120 ms
RST, V DD , V SS
MCP131 Open-drain Internal (~95 k Ω ) 120 ms
RST, V DD , V SS
MCP111 Open-drain External
No
V OUT , V SS , V DD
See MCP111/112 Data Sheet
(DS21889)
MCP112 Push-Pull
No
No
V OUT , V SS , V DD
See MCP111/112 Data Sheet
(DS21889)
? 2005 Microchip Technology Inc.
DS21906B-page 1
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