- 您现在的位置：买卖IC网 > PDF目录13297 > MAX6873ETJ+T (Maxim Integrated Products)IC SEQUENCE/SUPERVISOR 32TQFN PDF资料下载
参数资料
| 型号： | MAX6873ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 31/48页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCE/SUPERVISOR 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 序列发生器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 5 种可调阀值电压 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页当前第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页
EEPROM-Programmable, Hex/Quad,
Power-Supply Sequencers/Supervisors
Table 23. PO_ Timeout Periods
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT RANGE
AFFECTED OUTPUTS
MAX6872 MAX6873
DESCRIPTION
11h
8011h
[3:1]
PO1
—
15h
1Ch
23h
2Ah
31h
35h
39h
8015h
801Ch
8023h
802Ah
8031h
8035h
8039h
[3:1]
[4:2]
[4:2]
[3:1]
[3:1]
[3:1]
[3:1]
PO2
PO3
PO4
PO5
PO6
PO7
PO8
—
PO1
PO2
PO3
PO4
PO5
—
000 = 25μs
001 = 1.5625ms
010 = 6.25ms
011 = 25ms
100 = 50ms
101 = 200ms
110 = 400ms
111 = 1600ms
Charge-Pump Output Configuration
Configure the programmable outputs of the MAX6872/
MAX6873 as charge-pump outputs to drive n-channel
FETs for power-supply sequencing applications. Only
PO1–PO4 (MAX6872) or PO1 and PO2 (MAX6873) can be
configured as charge-pump output stages. The
charge-pump output high voltage is typically V ABP
+5.5V when unloaded.
Push-Pull Output Configuration
The MAX6872/MAX6873s’ programmable outputs sink
4mA and source 10mA when configured as push-pull
outputs. Only PO5 –PO8 (MAX6872) or PO3 –PO5
(MAX6873) can be configured as push-pull output
stages. The push-pull output stages refer to any of
IN3–IN6 (MAX6872)/IN3–IN4 (MAX6873) as configured
in Tables 21 and 22. Use the push-pull output configu-
ration to drive loads with fast rise/fall times, or those
with low impedance.
Weak Pullup Output Configuration
The MAX6872/MAX6873s’ programmable outputs sink
4mA when configured as weak pullups. The weak pullup
of 10k ? refers to any of IN3–IN6 (MAX6872)/IN3–IN4
(MAX6873) or ABP as configured in Tables 21 and 22.
All programmable outputs of the MAX6872/MAX6873
may be configured as weak pullups.
Open-Drain Output Configuration
Connect an external pullup resistor from the program-
mable output to an external voltage when configured as
an open-drain output. PO1–PO4 (PO1 and PO2 for the
MAX6873) may be pulled up to +13.2V. PO5 –PO8
(PO3–PO5 for the MAX6873) may be pulled up to a
voltage less than or equal to ABP. Choose the pullup
resistor depending on the number of devices connect-
ed to the open-drain output and the allowable current
consumption. The open-drain output configuration
allows wire-ORed connections, and provides flexibility
in setting the pullup current.
Configuring the MAX6872/MAX6873
The MAX6872/MAX6873 factory-default configuration
sets all EEPROM registers to 00h except register 3Ah,
which is set to FFh. This configuration sets all of the pro-
grammable outputs as active high, open drain (putting
all outputs into high-impedance states until the device is
reconfigured by the user). Each device requires configu-
ration before full power is applied to the system. To con-
figure the MAX6872/MAX6873, first apply an input
voltage to IN1 or one of IN3–IN6 (MAX6872)/IN3–IN4
(MAX6873) (see the Powering the MAX6872/MAX6873
section). V IN1 > +4V or one of V IN3 –V IN6 > +2.7V, to
ensure device operation. Next, transmit data through the
serial interface. Use the block write protocol to quickly
configure the device. Write to the configuration registers
first to ensure the device is configured properly. After
completing the setup procedure, use the read word pro-
tocol to verify the data from the configuration registers.
Lastly, use the write word protocol to write this data to
the EEPROM registers. After completing EEPROM regis-
ter configuration, apply full power to the system to begin
normal operation. The non-volatile EEPROM stores the
latest configuration upon removal of power. Write zeros
to all EEPROM registers to clear the memory.
Software Reboot
A software reboot allows the user to restore the
EEPROM configuration to the volatile registers without
cycling the power supplies. Use the send byte com-
mand with data byte 88h to initiate a software reboot.
The 3.5ms (max) power-up delay also applies after a
software reboot.
______________________________________________________________________________________
31
相关PDF资料 |
PDF描述 |
|---|---|
| GEM08DTAT-S273 | CONN EDGECARD 16POS R/A .156 SLD |
| ESM22DRMD-S664 | CONN EDGECARD 44POS .156 WW |
| EGM22DRMD-S664 | CONN EDGECARD 44POS .156 WW |
| MIC2940A-12WU | IC REG LDO 12V 1.25A TO-263 |
| EL7556DCMZ | IC REG BUCK SYNC ADJ 6A 28SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6874ETJ | 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 |
| MAX6874ETJ+ | 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer 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 |
| MAX6874ETJ+T | 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer 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 |
| MAX6874ETJ-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 |
| MAX6874TCC+ | 制造商:Maxim Integrated Products 功能描述: |
发布紧急采购，3分钟左右您将得到回复。