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PDF MAX16048A Data sheet ( Hoja de datos )
| Número de pieza | MAX16048A | |
| Descripción | 12-Channel/8-Channel EEPROM-Programmable System Managers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-5251; Rev 0; 4/10
EVAALVUAAILTAIOBNLEKIT
www.DataSheet4U.com
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
General Description
The MAX16046A/MAX16048A EEPROM-configurable sys-
tem managers monitor, sequence, track, and margin mul-
tiple system voltages. The MAX16046A manages up to
twelve system voltages simultaneously, and the
MAX16048A manages up to eight supply voltages. These
devices integrate an analog-to-digital converter (ADC) for
monitoring supply voltages, digital-to-analog converters
(DAC) for adjusting supply voltages, and configurable out-
puts 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 readback 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
(MAX16046A) or up to eight (MAX16048A) 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 MAX16046A/MAX16048A include twelve/eight inte-
grated 8-bit DAC outputs for margining power supplies
when connected to the trim input of a point-of-load
(POL) module.
The MAX16046A/MAX16048A include six programmable
general-purpose inputs/outputs (GPIOs). GPIOs are
EEPROM configurable as dedicated fault outputs, as a
watchdog input or output (WDI/WDO), as a manual reset
(MR), or for margin control inputs.
The MAX16046A/MAX16048A feature two methods of
fault management for recording information during sys-
tem shutdown 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 MAX16046A/MAX16048A. These devices
are offered in a 56-pin, 8mm x 8mm TQFN package or a
64-pin, 10mm x 10mm TQFP package and are fully speci-
fied 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 1 Overvoltage/
1 Undervoltage/1 Selectable Limit
o 12/8 8-Bit DAC Outputs for Margining or Voltage
Adjustments
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
Margin Enable Input
o I2C/SMBus-Compatible and JTAG Interface
o EEPROM-Configurable Time Delays, Thresholds,
and DAC Outputs
o 100 Bytes of Internal User EEPROM
o -40°C to +125°C Operating Temperature Range
Servers
Workstations
Storage Systems
Networking/Telecom
Applications
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX16046ACB+
-40°C to +125°C 64 TQFP-EP*
MAX16046ATN+
-40°C to +125°C 56 TQFN-EP*
MAX16048ACB+
-40°C to +125°C 64 TQFP-EP*
MAX16048ATN+
-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.
________________________________________________________________ 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 +125°C, unless otherwise specified. Typical values are at VCC = 3.3V, TA = +25°C.) (Note 1)
PARAMETER
DAC
DAC Resolution
DAC Output Voltage Range
DAC LSB Step Size
DAC Center Code Absolute
Accuracy
Gain Error
DAC Output Sink Capability
DAC Output Source Capability
DAC Output Switch Leakage
DAC Output Capacitive Load
DAC Output Settling Time
DAC Power-Supply Rejection
Ratio
DAC Differential Nonlinearity
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DACOUT_ range set to ‘11’
DACRNG
DACOUT_ range set to ‘10’
DACOUT_ range set to ‘01’
DACOUT_ range set to ‘11’
DACOUT_ range set to ‘10’
DACOUT_ range set to ‘01’
IDACOUT = ±50μA,
mid code, DACOUT_
range set to ‘11’
TA = +25°C
TA = -5°C to
+85°C
TA = -40°C to
+125°C
TA = +25°C
DACACC
IDACOUT = ±50μA,
mid code, DACOUT_
range set to ‘10’
TA = -5°C to
+85°C
TA = -40°C to
+125°C
TA = +25°C
IDACOUT = ±50μA,
mid code, DACOUT_
range set to ‘01’
TA = -5°C to
+85°C
TA = -40°C to
+125°C
DACSINK
DACSOURCE
Any range, TA = -40°C to +85°C
Any range, TA = -40°C to +125°C
Sinking current, IDACOUTMAX = 0.5mA
Sourcing current, IDACOUTMAX = -0.5mA
DACOUT_ switch off
(Note 5)
DACPSRR
DACDNL
DC
100mV step in 20ns with 50pF load
DACOUT_ code from 07h to F8h,
any range
1.195
1.190
1.187
0.896
0.890
0.888
0.597
0.592
0.590
-0.8
-1.0
-8
-150
-0.6
8
0.8
0.6
0.4
3.137
2.353
1.568
1.202
0.901
0.601
50
60
40
1.208
1.215
1.218
0.907
0.912
0.915
0.606
0.612
0.615
+0.8
+1.0
+8
+150
50
+0.6
Bits
V
mV
V
%
mV
mV
nA
pF
μs
dB
LSB
DAC Integral Nonlinearity
DACINL
DACOUT_ code from 07h to F8h,
any range
-0.9
+0.9 LSB
_______________________________________________________________________________________ 5
5 Page 
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25°C, unless otherwise noted.)
MIXED MODE
MAX16046A toc15
INS4
INS3
INS2
INS1
20ms/div
1V/div
0V
DACOUT_ VOLTAGE
vs. TEMPERATURE
1.30
1.28
0.8V TO 1.6V RANGE,
HALF SCALE
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
-45 -25 -5 15 35 55 75 95 115 135
TEMPERATURE (°C)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
ADC DNL
128 256 384 512 640 768 896 1024
INPUT VOLTAGE (DIGITAL CODE)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
ADC INL
128 256 384 512 640 768 896 1024
INPUT VOLTAGE (DIGITAL CODE)
INTERNAL TIMING ACCURACY
vs. TEMPERATURE
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-45 -25 -5 15 35 55 75 95 115 135
TEMPERATURE (°C)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX16048A.PDF ] | |
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