General Description
The MAX16047/MAX16049 EEPROM-configurable system managers monitor, sequence, and track multiple system voltages. The MAX16047 manages up to twelve system voltages simultaneously, and the MAX16049 manages up to eight supply voltages. These devices integrate an analog- to-digital converter (ADC) for monitoring supply voltages, and configurable outputs for sequencing and tracking supplies (during power-up and power-down).
Nonvolatile EEPROM registers are configurable for storing upper and lower voltage limits, setting timing and sequencing requirements, and for storing critical fault data for read back following failures.
An internal 1% accurate 10-bit ADC measures each input and compares the result to one upper, one lower, and one selectable upper or lower limit. A fault signal asserts when a monitored voltage falls outside the set limits. Up to three independent fault output signals are configurable to assert under various fault conditions.
The integrated sequencer/tracker allows precise control over the power-up and power-down order of up to twelve (MAX16047) or up to eight (MAX16049) power supplies.
Four channels (EN_OUT1–EN_OUT4) support closedloop tracking using external series MOSFETs. Six outputs (EN_OUT1–EN_OUT6) are configurable with chargepump outputs to directly drive MOSFETs without closedloop tracking.
The MAX16047/MAX16049 include six programmable general-purpose inputs/outputs (GPIOs). In addition to serving as EEPROM-configurable I/O pins, the GPIOs are also configurable as dedicated fault outputs, as a watchdog input or output (WDI/WDO), or as a manual reset (MR).
The MAX16047/MAX16049 feature two methods of fault management for recording information during critical fault events. The fault logger records a failure in the internal EEPROM and sets a lock bit protecting the stored fault data from accidental erasure.
An I2C/SMBus™-compatible or a JTAG serial interface configures the MAX16047/MAX16049. These devices are offered in a 56-pin 8mm x 8mm TQFN package and are fully specified from -40°C to +85°C.

Features
* Operates from 3V to 14V
* 1% Accurate 10-Bit ADC Monitors 12/8 Inputs
* 12/8 Monitored Inputs with One Overvoltage/ One Undervoltage/One Selectable Limit
* Nonvolatile Fault Event Logger
* Power-Up and Power-Down Sequencing Capability
* 12/8 Outputs for Sequencing/Power-Good Indicators
* Closed-Loop Tracking for Up to Four Channels
* Two Programmable Fault Outputs and One Reset Output
* Six General-Purpose Input/Outputs Configurable as:
Dedicated Fault Output
Watchdog Timer Function
Manual Reset
* I2C/SMBus-Compatible and JTAG Interface
* EEPROM-Configurable Time Delays and Thresholds
* 100 Bytes of Internal User EEPROM
* 56-Pin (8mm x 8mm) TQFN Package
* -40°C to +85°C Operating Temperature Range

MAX16047ETN
MAX16049ETN

Trackback :: http://datasheetblog.com/trackback/1334

댓글을 달아 주세요 Comment

Recommended for high-side switching applications that benefit from separate logic and load grounds, these devices encompass load supply voltages to 50 V and output currents to -500 mA. These 8-channel source drivers are useful for interfacing between low-level logic and high-current loads. Typical loads include relays, solenoids, lamps, stepper and/or servo motors, print hammers, and LEDs.
All devices may be used with 5 V logic systems — TTL, Schottky TTL, DTL, and 5 V CMOS. The UDN2981A, UDN2982A, and A2982SLW are electrically interchangeable, will withstand a maximum output off voltage of 50 V, and operate to a minimum of 5 V. All devices in this series integrate input current limiting resistors and output transient suppression diodes, and are activated by an active high input.
The suffix ‘A’ (all devices) indicates an 18-lead plastic dual in-line package with copper lead frame for optimum power dissipation. Under normal operating conditions, these devices will sustain 120 mA continuously for each of the eight outputs at an ambient temperature of +50°C and a supply of 15 V. The suffix ‘LW’ (UDN2982LW only) indicates an 18-lead surfacemountable wide-body SOIC package; the A2982SLW is provided in a 20-lead wide-body SOIC package with improved thermal characteristics. The UDN2982A, UDN2982LW, and A2982SLW drivers are also available for operation over an extended temperature range to -40°C. To order, change the prefix ‘UDN’ to ‘UDQ’ or the suffix ‘SLW’ to ‘ELW’. These packages are available in Pb (lead) free variants (suffix ‘-T’), with 100% matte-tin leadframe plating.

FEATURES
ㅁ TTL, DTL, PMOS, or CMOS Compatible Inputs
ㅁ 500 mA Output Source Current Capability
ㅁ Transient-Protected Outputs
ㅁ Output Breakdown Voltage to 50 V
ㅁ DIP or SOIC Packaging

UDN2982A UDN2982LW

Trackback :: http://datasheetblog.com/trackback/374

댓글을 달아 주세요 Comment