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PDF MAX16047A Data sheet ( Hoja de datos )
| Número de pieza | MAX16047A | |
| Descripción | 12-Channel/8-Channel EEPROM-Programmable System Managers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-5250; Rev 0; 4/10
EVAALVUAAILTAIOBNLEKIT
www.DataSheet4U.com
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
General Description
The MAX16047A/MAX16049A EEPROM-configurable sys-
tem managers monitor, sequence, and track multiple sys-
tem voltages. The MAX16047A manages up to twelve
system voltages simultaneously, and the MAX16049A
manages up to eight supply voltages. These devices inte-
grate 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
(MAX16047A) or up to eight (MAX16049A) power sup-
plies. Four channels (EN_OUT1–EN_OUT4) support
closed-loop tracking using external series MOSFETs. Six
outputs (EN_OUT1–EN_OUT6) are configurable with
charge-pump outputs to directly drive MOSFETs without
closed-loop tracking.
The MAX16047A/MAX16049A include six programma-
ble 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 MAX16047A/MAX16049A feature two methods of
fault management for recording information during criti-
cal 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 MAX16047A/MAX16049A. These devices
are offered in a 56-pin, 8mm x 8mm TQFN package and
are fully specified from -40°C to +125°C.
Features
o Operates from 3V to 14V
o 1% Accurate 10-Bit ADC Monitors 12/8 Inputs
o 12/8 Monitored Inputs with One Overvoltage/
One Undervoltage/One Selectable Limit
o Nonvolatile Fault Event Logger
o Power-Up and Power-Down Sequencing
Capability
o 12/8 Outputs for Sequencing/Power-Good
Indicators
o Closed-Loop Tracking for Up to Four Channels
o Two Programmable Fault Outputs and One Reset
Output
o Six General-Purpose Input/Outputs Configurable as:
Dedicated Fault Output
Watchdog Timer Function
Manual Reset
o I2C/SMBus-Compatible and JTAG Interface
o EEPROM-Configurable Time Delays and
Thresholds
o 100 Bytes of Internal User EEPROM
o 56-Pin (8mm x 8mm) TQFN Package
o -40°C to +125°C Operating Temperature Range
Servers
Workstations
Storage Systems
Networking/Telecom
Applications
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX16047ATN+
-40°C to +125°C
56 TQFN-EP*
MAX16049ATN+
-40°C to +125°C
56 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed Pad.
SMBus is a trademark of Intel Corp.
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3V to 14V, TA = -40°C to +85°C, unless otherwise specified. Typical values are at VCC = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
OUTPUTS (EN_OUT_, RESET, GPIO_)
Output-Voltage Low
VOL
Output-Voltage High (Push-Pull)
CONDITIONS
ISINK = 2mA
ISOURCE = 100µA
Output Leakage (Open Drain)
EN_OUT_ Overdrive (Charge
Pump) (EN_OUT1 to EN_OUT6
Only) Volts above VMON_
IOUT_LKG
GPIO1–GPIO4, VGPIO_ = 3.3V
GPIO1–GPIO4, VGPIO_ = 5V
VOV IGATE_ = 0.5µA
MIN TYP MAX UNITS
0.4 V
2.4 V
1
1 µA
23
4.6 5.1 5.6
V
EN_OUT_ Pullup Current (Charge
Pump)
ICHG_UP
During power-up/power-down,
VGATE_ = 1V
4.5 6
µA
EN_OUT_ Pulldown Current
(Charge Pump)
ICHG_DOWN
During power-up/power-down,
VGATE_ = 5V
10 µA
INPUTS (A0, GPIO_)
Logic-Input Low Voltage
Logic-Input High Voltage
SMBus INTERFACE
VIL
VIH
0.8 V
2.0 V
Logic-Input Low Voltage
Logic-Input High Voltage
VIL Input voltage falling
VIH Input voltage rising
0.8 V
2.0 V
Input Leakage Current
VCC shorted to GND, SCL/SDA at 0V or
3.3V
-1
+1
µA
Output-Voltage Low
Input Capacitance
SMBus TIMING
VOL ISINK = 3mA
CIN
-1 +1
0.4 V
5 pF
Serial Clock Frequency
Bus Free Time Between STOP
START Condition Setup Time
START Condition Hold Time
STOP Condition Setup Time
Clock Low Period
Clock High Period
Data Setup Time
Output Fall Time
Data Hold Time
fSCL
tBUF
tSU:STA
tHD:STA
tSU:STO
tLOW
tHIGH
tSU:DAT
tOF
tHD:DAT
10pF ≤ CBUS ≤
400pF
Receive
Transmit
TA = -40°C to +85°C
TA = -40°C to +125°C
1.3
0.6
0.6
0.6
1.3
0.6
200
0
0.3
400 kHz
µs
µs
µs
µs
µs
µs
ns
250
ns
500
µs
0.9
Pulse Width of Spike Suppressed
tSP
30 ns
_______________________________________________________________________________________ 5
5 Page 
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
Pin Description
PIN
MAX16047A MAX16049A
NAME
FUNCTION
1–8
1–8
MON1–MO
N8
ADC Monitored Voltage Inputs. Set ADC input range for each MON_ through
configuration registers. Measured values are written to ADC registers and can be read
back through the I2C or JTAG interface.
9–12
13
14
15
16
17
18
19
20
21, 40
22
23
—
13
14
15
16
17
18
19
20
21, 40
22
23
ADC Monitored Voltage Inputs. Set ADC input range through configuration registers.
MON9–MO
N12
Measured values are written to ADC registers and can be read back through the I2C or
JTAG interface.
RESET Configurable Reset Output
Four-State SMBus Address. Address sampled upon POR. Connect A0 to ground, DBP,
A0 SCL, or SDA to program an individual address when connecting multiple devices. See
the I2C/SMBus-Compatible Serial Interface section.
SCL
SDA
TMS
TDI
TCK
TDO
GND
SMBus Serial Clock Input
SMBus Serial Data Open-Drain Input/Output
JTAG Test Mode Select
JTAG Test Data In
JTAG Test Clock
JTAG Test Data Out
Ground. Connect all GND connections together.
GPIO6
GPIO5
General-Purpose Input/Output. GPIO6 and GPIO5 are configurable as open-drain or
push-pull outputs, dedicated fault outputs, or for watchdog functionality. GPIO5 is
configurable as a watchdog input (WDI). GPIO6 is configurable as a watchdog output
(WDO). GPIO6 is also configurable for margining. Use the EEPROM to configure GPIO5
and GPIO6. See the General-Purpose Inputs/Outputs section.
Analog Enable Input. Apply a voltage greater than the 0.525V (typ) threshold to enable
24 24 EN all outputs. The power-down sequence is triggered when EN falls below 0.5V (typ) and
all outputs are deasserted.
25–36
9–12, 25–36,
53–56
N.C.
No Connection. Must be left unconnected.
______________________________________________________________________________________ 11
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX16047A.PDF ] | |
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