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参数资料
| 型号： | MAX6734KAZGD3+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output |
| 中文描述： | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | ROHS COMPLIANT, SOT-23, 8 PIN |
| 文件页数： | 13/15页 |
| 文件大小： | 199K |
| 代理商： | MAX6734KAZGD3+T |
MAX6730–MAX6735
Single-/Dual-/Triple-Voltage P Supervisory
Circuits with Independent Watchdog Output
_______________________________________________________________________________________
7
Pin Description
PIN
MAX6730
MAX6731
MAX6732
MAX6733
MAX6734
MAX6735
NAME
FUNCTION
1
RST
Active-Low Reset Output. The MAX6730/MAX6732/MAX6734 provide an open-
drain output. The MAX6731/MAX6733/MAX6735 provide a push-pull output.
RST
asserts low when any of the following conditions occur: VCC1 or VCC2 drops
below its preset threshold, RSTIN drops below its reset threshold, or
MR is driven
low. Open-drain versions require an external pullup resistor.
2
GND
Ground
3
4
WDO
Active-Low Watchdog Output. The MAX6730/MAX6732/MAX6734 provide an
open-drain
WDO output. The MAX6731/MAX6733/MAX6735 provide a push-pull
WDO output. WDO asserts low when no low-to-high or high-to-low transition
occurs on WDI within the watchdog timeout period (tWD) or if an undervoltage
lockout condition exists for VCC1, VCC2, or RSTIN.
WDO deasserts without a
timeout period when VCC1, VCC2, and RSTIN exceed their reset thresholds, or
when the manual reset input is asserted. Open-drain versions require an external
pullup resistor.
4
—
5
MR
Active-Low Manual Reset Input. Drive
MR low to force a reset. RST remains
asserted as long as
MR is low and for the reset timeout period after MR releases
high.
MR has a 50k pullup resistor to VCC1; leave MR open or connect to VCC1
if unused.
5
3
WDI
Watchdog Input. If WDI remains high or low for longer than the watchdog timeout
period, the internal watchdog timer expires and the watchdog output asserts low.
The internal watchdog timer clears whenever
RST asserts or a rising or falling
edge on WDI is detected. The watchdog has an initial watchdog timeout period
(35s min) after each reset event and a short timeout period (1.12s min) after the
first valid WDI transition. Floating WDI does not disable the watchdog timer
function.
6
8
VCC1
Primary Supply-Voltage Input. VCC1 provides power to the device when it is
greater than VCC2. VCC1 is the input to the primary reset threshold monitor.
—
4
6
VCC2
Secondary Supply-Voltage Input. VCC2 provides power to the device when it is
greater than VCC1. VCC2 is the input to the secondary reset threshold monitor.
—
7
RSTIN
Undervoltage Reset Comparator Input. RSTIN provides a high-impedance
comparator input for the adjustable reset monitor.
RST asserts low if the voltage
at RSTIN drops below the 626mV internal reference voltage. Connect a resistive
voltage-divider to RSTIN to monitor voltages higher than 626mV. Connect RSTIN
to VCC1 or VCC2 if unused.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6734KAZGD4+T | 功能描述:监控电路 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 |
| MAX6734KAZGD4-T | 功能描述:监控电路 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 |
| MAX6734KAZGD5+T | 功能描述:监控电路 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 |
| MAX6734KAZGD5-T | 功能描述:监控电路 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 |
| MAX6734KAZGD6+T | 功能描述:监控电路 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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