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| 型号： | MAX6728KAZWD3-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Dual/Triple Ultra-Low-Voltage SOT23 µ.P Supervisory Circuits |
| 中文描述： | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| 封装： | MO-178, SOT-23, 8 PIN |
| 文件页数： | 1/19页 |
| 文件大小： | 715K |
| 代理商： | MAX6728KAZWD3-T |
General Description
The MAX6715–MAX6729 are ultra-low-voltage microproces-
sor (P) supervisory circuits designed to monitor two or three
system power-supply voltages. These devices assert a sys-
tem reset if any monitored supply falls below its factory-
trimmed or adjustable threshold and maintain reset for a
minimum timeout period after all supplies rise above their
thresholds. The integrated dual/triple supervisory circuits sig-
nificantly improve system reliability and reduce size com-
pared to separate ICs or discrete components.
These devices monitor primary supply voltages (VCC1) from
1.8V to 5.0V and secondary supply voltages (VCC2) from
0.9V to 3.3V with factory-trimmed reset threshold voltage
options (see Reset Voltage Threshold Suffix Guide). An
externally adjustable RSTIN input option allows customers to
monitor a third supply voltage down to 0.62V. These devices
are guaranteed to be in the correct reset output logic state
when either VCC1 or VCC2 remains greater than 0.8V.
A variety of push-pull or open-drain reset outputs along with
watchdog input, manual reset input, and power-fail input/out-
put features are available (see Selector Guide). Select reset
timeout periods from 1.1ms to 1120ms (min) (see Reset
Timeout Period Suffix Guide). The MAX6715–MAX6729 are
available in small 5, 6, and 8-pin SOT23 packages and oper-
ate over the -40°C to +85°C temperature range.
Applications
Multivoltage Systems
Telecom/Networking Equipment
Computers/Servers
Portable/Battery-Operated Equipment
Industrial Equipment
Printer/Fax
Set-Top Boxes
Features
VCC1 (primary supply) Reset Threshold Voltages
from 1.58V to 4.63V
VCC2 (secondary supply) Reset Threshold
Voltages from 0.79V to 3.08V
Externally Adjustable RSTIN Threshold for
Auxiliary/Triple-Voltage Monitoring
(0.62V internal reference)
Watchdog Timer Option
35s (min) Long Startup Period
1.12s (min) Normal Timeout Period
Manual Reset Input Option
Power-Fail Input/Power-Fail Output Option
(Push-Pull and Open-Drain Active-Low)
Guaranteed Reset Valid Down to VCC1 or
VCC2 = 0.8V
Reset Output Logic Options
Immune to Short VCC Transients
Low Supply Current 14A (typ) at 3.6V
Small 5, 6, and 8-Pin SOT23 Packages
MAX6715–MAX6729
Dual/Triple Ultra-Low-Voltage SOT23 P
Supervisory Circuits
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
IN
OUT2
OUT1
DC/DC
CONVERTER
UNREGULATED
DC
R1
R2
VCC1VCC2
RSTIN/PFI
MR
RST
WDI
PFO
MAX67_ _
PUSHBUTTON
SWITCH
I/O
SUPPLY
CORE
SUPPLY
RESET
I/O
NMI
P
1.8V
0.9V
Typical Operating Circuit
19-2325; Rev 5; 12/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations and Selector Guide appear at end of
data sheet.
PART
TEMP RANGE
PIN-PACKAGE
MAX6715UT_ _D_ -T
-40°C to +85°C
6 SOT23-6
MAX6716UT_ _D_ -T
-40°C to +85°C
6 SOT23-6
MAX6717UK_ _D_ -T
-40°C to +85°C
5 SOT23-5
MAX6718UK_ _D_ -T
-40°C to +85°C
5 SOT23-5
MAX6719UT_ _D_ -T
-40°C to +85°C
6 SOT23-6
MAX6720UT_ _D_ -T
-40°C to +85°C
6 SOT23-6
Note: The first “_ _” are placeholders for the threshold voltage
levels of the devices. Desired threshold levels are set by the part
number suffix found in the Reset Voltage Threshold Suffix Guide.
The “_” after the D is a placeholder for the reset timeout delay
time. Desired delay time is set using the timeout period suffix
found in the Reset Timeout Period Suffix Guide. For example the
MAX6716UTLTD3-T is a dual-voltage supervisor VTH1 = 4.625V,
VTH2 = 3.075V, and 210ms (typ) timeout period.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing "-T" with "+T" when ordering.
Ordering Information continued at end of data sheet.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6728KAZWD5-T | Dual/Triple Ultra-Low-Voltage SOT23 µ.P Supervisory Circuits |
| MAX6728KAZWD6-T | Dual/Triple Ultra-Low-Voltage SOT23 µ.P Supervisory Circuits |
| MAX6729KALTD1-T | AHS Series Logic; Surface Mount Type: Y; Series Name: TC7PA; Function: Dual Inverter (Open Drain); Package: US6; Number of Pins: 6; Comments: Input tolerant/Output power down protection functions |
| MAX6729KALTD2-T | AHS Series Logic; Surface Mount Type: Y; Series Name: TC7PA; Function: Single D-Type Flip-Flop with clear; Package: US6; Number of Pins: 6; Comments: Input tolerant functions |
| MAX6729KALTD3-T | AHS Series Logic; Surface Mount Type: Y; Series Name: TC7PA; Function: Chip Select Decoder; Package: ES6; Number of Pins: 6; Comments: Input tolerant functions |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6728KAZWD4+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 |
| MAX6728KAZWD4-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 |
| MAX6728KAZWD5+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 |
| MAX6728KAZWD5-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 |
| MAX6728KAZWD6+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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