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| 型号： | MAX16021PTEZ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/21页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR OD 2.323V 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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： | 2.323V |
| 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： | 带卷 (TR) |
Low-Power μP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
Pin Description—MAX16020/MAX16021
PIN
MAX16020 MAX16021
NAME
FUNCTION
Backup Battery Input. If V CC falls below its reset threshold, and if V BATT > V CC , OUT
1
1
BATT
connects to BATT. If V CC rises above 1.01 x V BATT , OUT connects to V CC . Bypass BATT to
GND with a 0.1μF capacitor.
Active-Low Manual Reset Input. RESET asserts when MR is pulled low. RESET remains low
2
2
MR
for the duration of reset timeout period after MR transitions from low to high. Connect MR to
V CC or leave unconnected if not used. MR is internally connected to V CC through a 30k Ω
pullup resistor.
Power-Fail Comparator Input. Connect PFI to a resistive divider to set the desired PFI
3
3
PFI
threshold. The PFI input is referenced to an internal threshold V PFT , V PFT-HYS internal
hysteresis provides noise immunity. The power-fail comparator is powered from OUT.
Watchdog Timer Input. If WDI remains high or low for longer than the watchdog timeout
4
4
WDI
period (t WD ), the internal watchdog timer runs out and asserts WDO . The internal watchdog
clears when reset asserts or whenever WDI sees a rising or falling edge. To disable the
watchdog feature, leave WDI unconnected or three-state the driver connected to WDI.
Active-Low Low-Line Output. LL goes low when V CC falls to 2.5% above the reset threshold
5
5
LL
(Table 2). LL provides an early warning of V CC failure before reset asserts. Use this output
to generate a nonmaskable interrupt (NMI) to initiate an orderly shutdown routine when
V CC is falling.
Open-Drain Battery-Test Output. Pulses low for 1.3s every 24 hours during the battery
6
—
BATT_TEST voltage test. If V BATT < 2.6V, BATTOK deasserts low. See Figure 6 for providing additional
load during the battery test.
Active-High Reset Output. RESET asserts when V CC falls below the reset threshold or when
—
6
RESET
MR asserts and stays asserted for the reset timeout period after V CC rises above the reset
threshold and MR deasserts.
7
8
7
8
BATTOK
BATTON
Battery-OK Output. BATTOK goes low when the battery voltage falls below the BATTOK
threshold (BATTOK is low when in battery-backup mode).
Active-High Battery-On Output. BATTON goes high when in battery-backup mode.
10
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16023LTAL12+T | 功能描述:电池管理 Battery Backup 1.2V-Ep RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX16023LTAL18+T | 功能描述:电池管理 Battery Backup 1.8V-Ep RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX16023LTAL25+T | 功能描述:电池管理 Battery Backup 3.3V-Ep RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX16023LTAL33+T | 功能描述:电池管理 Battery Backup 3.3V-Ep RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX16023LTAM12+T | 功能描述:电池管理 Battery Backup 1.2V-Ep RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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