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| 型號： | MAX6870ETJ-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC |
| 中文描述： | 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC32 |
| 封裝： | 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-32 |
| 文件頁數(shù)： | 1/51頁 |
| 文件大小： | 672K |
| 代理商： | MAX6870ETJ-T |
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General Description
The MAX6870/MAX6871 EEPROM-configurable, multi-
voltage supply sequencers/supervisors monitor several
voltage detector inputs, two auxiliary inputs, and four
general-purpose logic inputs. The MAX6870/MAX6871
feature programmable outputs for highly configurable
power-supply sequencing applications. The MAX6870
features six voltage detector inputs and eight program-
mable outputs, while the MAX6871 features four voltage
detector inputs and five programmable outputs. Manual
reset and margin disable inputs offer additional flexibility.
All voltage detectors offer two configurable thresholds
for undervoltage/overvoltage or dual undervoltage
detection. One high voltage input (IN1) provides detec-
tor threshold voltages from +2.5V to +13.2V in 50mV
increments, or from +1.25V to +7.625V in 25mV incre-
ments. A bipolar input (IN2) provides detector threshold
voltages from ±2.5V to ±15.25V in 50mV increments, or
from ±1.25V to ±7.625V in 25mV increments. Positive
inputs (IN3–IN6) provide detector threshold voltages
from +1V to +5.5V in 20mV increments, or from +0.5V
to +3.05V in 10mV increments.
Programmable output stages control power-supply
sequencing or system resets/interrupts. Programmable
output options include: active-high, active-low, open-
drain, weak pullup, push-pull, and charge pump.
Programmable timing delay blocks configure each output
to wait between 25s and 1600ms before deasserting. A
fault register logs the condition that caused each output
to assert (undervoltage, overvoltage, manual reset, etc.).
An internal 10-bit ADC monitors the voltage detector
inputs, and two auxiliary inputs through a multiplexer
that automatically sequences through all inputs every
200ms. A SMBusTM-/I2CT-compatible, serial data inter-
face programs and communicates with the configuration
EEPROM, the configuration registers, the internal 4kb
user EEPROM, the ADC registers, and the fault registers
of the MAX6870/MAX6871.
The MAX6870/MAX6871 are available in a 7mm x 7mm
x 0.8mm 32-pin thin QFN package and operate over
the extended -40°C to +85°C temperature range.
Applications
Telecommunications/Central Office Systems
Networking Systems
Servers/Workstations
Basestations
Storage Equipment
Multimicroprocessor/Voltage Systems
Features
Six (MAX6870) or Four (MAX6871) Configurable
Input Voltage Detectors
One High Voltage Input (+1.25V to +7.625V or
+2.5V to +13.2V Thresholds)
One Bipolar Voltage Input (±1.25V to ±7.625V
or ±2.5V to ±15.25V Thresholds)
Four (MAX6870) or Two (MAX6871) Positive
Voltage Inputs (+0.5V to +3.05V or +1V to
+5.5V Thresholds)
Four General-Purpose Logic Inputs
Two Configurable Watchdog Timers
Eight (MAX6870) or Five (MAX6871)
Programmable Outputs
Active-High, Active-Low, Open-Drain, Weak
Pullup, Push-Pull, Charge-Pump
Timing Delays from 25s to 1600ms
10-Bit Internal ADC Monitors the Input Voltage
Detectors and Two Auxiliary Inputs
Margining Disable and Manual Reset Controls
Internal 1.25V Reference or External Reference
Input
4kb Internal User EEPROM
Endurance: 100,000 Erase/Write Cycles
Data Retention: 10 Years
I2C/SMBus-Compatible Serial
Configuration/Communication Interface
±1% Threshold Accuracy
MAX6870/MAX6871
EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3384; Rev 1; 9/04
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.
EVALUATION
KIT
AVAILABLE
Pin Configurations, Typical Operating Circuit, and Selector
Guide appear at end of data sheet.
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX6870ETJ
-40°C to +85°C
32 Thin QFN
T3277-2
MAX6871ETJ
-40°C to +85°C
32 Thin QFN
T3277-2
SMBus is a trademark of Intel Corp.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX6870ETJ+ | EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC |
| MAX6871ETJ+ | EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC |
| MAX6871ETJ-T | EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC |
| MAX6871ETJ+T | EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC |
| MAX6872ETJ+T | EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors with Charge-Pump Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6870EVCMAXQ | 制造商:Maxim Integrated Products 功能描述:EEPROM-PROGRAMMABLE HEX/QUAD POWER-SUPPLY SEQ - Rail/Tube |
| MAX6870EVCMOD2 | 制造商:Maxim Integrated Products 功能描述:EEPROM-PROGRAMMABLE HEX/QUAD POWER-SUPPLY SEQ - Rail/Tube |
| MAX6870EVKIT | 制造商:Maxim Integrated Products 功能描述:EEPROM-PROGRAMMABLE HEX/QUAD POWER-SUPPLY SEQ - Bulk |
| MAX6871ETJ | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6871ETJ+ | 功能描述:監(jiān)控電路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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