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参数资料
| 型号： | MAX16021PTEL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR OD 4.6894V 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 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/低有效 |
| 复位超时： | 最小 145 ms |
| 电压 - 阀值： | 4.684V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 托盘 |
19-4145; Rev 6; 11/11
Low-Power μP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
General Description
The MAX16016/MAX16020/MAX16021 supervisory cir-
cuits monitor power supplies, provide battery-backup
control, and chip-enable (CE) gating to write protect
memory in microprocessor (μP)-based systems. These
low-power devices improve system reliability by providing
several supervisory functions in a small, single integrated
solution.
The MAX16016/MAX16020/MAX16021 perform four
basic system functions:
1) Provide a μP reset output during V CC supply power-
up, power-down, and brownout conditions.
2) Control V CC to battery-backup switching internally
to maintain data or low-power operation for memo-
ries, real-time clocks (RTCs), and other digital logic
when the main power is removed.
3) Provide memory write protection through internal
chip-enable gating during brownout.
4) Provide a combination of additional supervisory
functions listed in the Features section.
Features
o System Monitoring for 5V, 3.3V, 3V, 2.5V, or 1.8V
Power-Supply Voltages
o 1.53V to 5.5V Operating Voltage Range
o Low 1.2 μ A Supply Current (0.25 μ A in Battery-
Backup Mode)
o 145ms (min) Reset Timeout Period
o Battery Freshness Seal
o On-Board Gating of CE Signals, 1.5ns
Propagation Delay (MAX16020/MAX16021)
o Debounced Manual Reset Input
o Watchdog Timer, 1.2s (typ) Timeout
o Power-Fail Comparator and Low-Line Indicator for
Monitoring Voltages Down to 0.6V
o Battery-On, Battery-OK, and Battery Test
Indicators
o Small 10-Pin TDFN or 16-Pin TQFN Packages
o UL ? -Certified to Conform to IEC 60950-1
Ordering Information
The MAX16016/MAX16020/MAX16021 operate from a
1.53V to 5.5V supply voltage and offer fixed reset
thresholds for monitoring 5V, 3.3V, 3V, 2.5V, and 1.8V
PART
MAX16016 _TB_+T
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
10 TDFN-EP*
systems. Each device is available with either a push-
pull or open-drain reset output.
The MAX16016/MAX16020/MAX16021 are available in
small TDFN/TQFN packages and are fully specified for
an operating temperature range of -40°C to +85°C.
Applications
Main/Backup Power for RTCs, CMOS Memories
Industrial Control
GPS Systems
Set-Top Boxes
The first placeholder “_” designates all output options. Letter
“L” indicates push-pull outputs and letter “P” indicates open-
drain outputs. The last placeholder “_” designates the reset
threshold (see Table 1).
T = Tape and reel.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide located at end of data sheet.
Pin Configurations
TOP VIEW
Point-of-Sale Equipment
16
15
14
13
Portable/Battery Equipment
BATT
MR
1
2
+
12
11
RESET
GND
MAX16020
PFI
3
10
PFO
WDI
4
5
6
7
EP
8
9
WDO
TQFN
UL is a registered trademark of Underwriters Laboratories, Inc.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16021PTEL+ | 功能描述:监控电路 uPwr w/Bat-Backup 4.6894V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16021PTEL+T | 功能描述:监控电路 uPwr w/Bat-Backup 4.6894V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16021PTEM+ | 功能描述:监控电路 uPwr w/Bat-Backup 4.428V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16021PTEM+T | 功能描述:监控电路 uPwr w/Bat-Backup 4.428V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX16021PTER+ | 功能描述:监控电路 uPwr w/Bat-Backup 2.640V RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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