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参数资料
| 型号： | PT7M7443LTAE |
| 厂商： | PERICOM SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | LEAD FREE, MO-178AA, SOT-23, 5 PIN |
| 文件页数： | 1/11页 |
| 文件大小： | 542K |
| 代理商： | PT7M7443LTAE |
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PT0289(07/07)
Ver: 0
1
Preliminary Data Sheet
PT7M7443-52
P Supervisory Circuit
Features
Single- or Dual-Supply Voltage Monitors
Precision Factory-Set Reset Thresholds from 1.6V to
4.6V
Adjustable Threshold to Monitor Voltages Down to
0.63V (PT7M7449~7452)
Single or Dual Manual Reset Inputs with Extended
6.72s Setup Period
Optional Short Setup Time Manual Reset Input
(PT7M7447/7448/7451/7452)
Immune to Short Voltage Transients
Low 3uA Supply Current
Guaranteed Valid Reset Down to VDD=1.0V
Active-Low /RESET(Push-Pull or Open-Drain)
Outputs
140ms(min) Reset Timeout Period
Small 5 and 6-Pin SOT23 Packages
Ordering Information
Part Number
Package
PT7M7443xTAE
lead-free SOT23-5
PT7M7444xTAE
lead-free SOT23-5
PT7M7445xTAE
lead-free SOT23-5
PT7M7446xTAE
lead-free SOT23-5
PT7M7447xTAE
lead-free SOT23-5
PT7M7448xTAE
lead-free SOT23-5
PT7M7449xTAE
lead-free SOT23-6
PT7M7450xTAE
Lead-free SOT23-6
PT7M7451xTAE
lead-free SOT23-6
PT7M7452xTAE
lead-free SOT23-6
Note: suffix “x” represents 9 kinds of factory trimmed reset
threshold voltage. Please see below table.
Description
The PT7M7443~7452 low-current microprocessor reset
circuits feature single or dual manual reset inputs with an
extended 6.72s setup period. Because of the extended
setup period, short switch closures (nuisance resets) are
ignored.
On all devices, the reset output asserts when any of the
monitored supply voltages drops below its specified
threshold. The reset output remains asserted for the reset
timeout period (210ms typ) after all monitored supplies
exceed their reset thresholds. The reset output is one-shot
pulse asserted for the reset timeout period (140ms min)
when selected manual reset input(s) are held low for an
extended setup timeout period of 6.72s. These devices
ignore manual reset transitions of less than 6.72s (typ).
The PT7M7443~7448 are single fixed-voltage P
supervisors. The PT7M7443/7444 have a single extended
manual reset input. The PT7M7445/7446 have two
extended manual reset inputs. The PT7M7447/7448 have
one extended and one immediate manual reset input.
The PT7M7449~7452 have one fixed-threshold P
supervisor and one adjustable-threshold P supervisor.
The PT7m7449/7450 have two delayed manual reset
inputs. The PT7M7451/7452 have one delayed and one
immediate manual reset input.
The PT7M7443~7452 have an active-low /RESET with
push-pull or open-drain output logic options. These
devices, offered in small SOT package, are fully
guaranteed over the extended temperature range (-40℃
to +85℃).
Applications
Monitoring lithiumion (Li+) cells or multicell
alkaline/ NiCd/ NiMH power supplies.
Table 1 Suffix “x” definition of PT7M7443~7452
Suffix x
L
M
T
S
R
Z
Y
W
V
Reset threshold (V)
4.63
4.38
3.08
2.93
2.63
2.32
2.19
1.67
1.58
相关PDF资料 |
PDF描述 |
|---|---|
| PT7M7445LTAE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| PT7M7443STAE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| PT7M7448MTAE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| PT7M7450TTAE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| PT7M7446WTAE | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT7M7809RTEX | 功能描述:IC SUPERVISOR 2.63V SOT23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| PT7M7809STEX | 功能描述:IC SUPERVISOR 2.93V SOT23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| PT7M7809TTEX | 功能描述:IC SUPERVISOR 3.08V SOT23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| PT7M7809ZTEX | 功能描述:IC SUPERVISOR 2.32V SOT23-3 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 140 ms 电压 - 阀值:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
| PT7M7810STEX | 制造商:Pericom Semiconductor Corporation 功能描述:RESET IC |
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