19-5250; Rev 0; 4/10
IT
TION K
VALUA
E
BLE
AVAILA
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 I
2
C/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
I
2
C/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
MAX16047A/MAX16049A
Applications
Servers
Workstations
Storage Systems
Networking/Telecom
Ordering Information
PART
MAX16047ATN+
MAX16049ATN+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
56 TQFN-EP*
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.
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
MAX16047A/MAX16049A
Typical Operating Circuit
V
SUPPLY
MAX16047A/MAX16049A
10µF
IN
DC-DC
EN
GND
MON1
V
CC
+3.3V
OUT
EN_OUT1
IN
DC-DC
OUT
MON2–MON11
SCL
SDA
V
CC
MAX16047A
EN
GND
RESET
FAULT
WDI
RESET
INT
I/O
INT
µC
EN_OUT2–
EN_OUT11
IN
DC-DC
OUT
MON12
WDO
ABP
DBP
EN
GND
A0
1µF
1µF
EN_OUT12
GND
EN
2
_______________________________________________________________________________________
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ....................……………………………-0.3V to +15V
EN, MON_, SCL, SDA, A0 ........................................-0.3V to +6V
GPIO_, EN_OUT7–EN_OUT12,
RESET
(configured as open drain) to GND.......................-0.3V to +6V
EN_OUT1–EN_OUT6
(configured as open-drain) to GND ....................-0.3V to +12V
GPIO_, EN_OUT,
RESET
(configured as push-pull) to GND .........-0.3V to (V
DBP
+ 0.3V)
DBP, ABP to GND ......-0.3V to the lower of 3V and (V
CC
+ 0.3V)
TCK, TMS, TDI.......................................................-0.3V to +3.6V
TDO ..........................................................-0.3V to (V
DBP
+ 0.3V)
EN_OUT1–EN_OUT6
(configured as charge pump) ...........-0.3V to (V
MON1–6
+ 6V)
Continuous Current (all pins)............................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
56-Pin TQFN (derate 47.6mW/°C above +70°C) .......3810mW*
Thermal Resistance
θ
JA
.............................……………………………………...21°C/W
θ
JC
.............................……………………………………..0.6°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
*As
per JEDEC 51 Standard, Multilayer Board (PCB).
MAX16047A/MAX16049A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 3V to 14V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
Operating Voltage Range
Undervoltage Lockout
Undervoltage-Lockout Hysteresis
Supply Current
DBP Regulator Voltage
ABP Regulator Voltage
Boot Time
Internal Timing Accuracy
ADC
ADC Resolution
MON_ range set to ‘00’
T
A =
-40°C to
+85°C
ADC Total Unadjusted Error
(Note 4)
ADC
ERR
T
A =
-40°C to
+125°C
ADC Integral Nonlinearity
ADC Differential Nonlinearity
ADC Total Monitoring Cycle Time
MON_ Input Impedance
ADC
INL
ADC
DNL
t
CYCLE
R
IN
All channels monitored,
no MON_ fault detected (Note 5)
MON1–MON4
MON5–MON12
46.5
65
120
MON_ range set to ‘01’
MON_ range set to ‘10’
MON_ range set to ‘00’
MON_ range set to ‘01’
MON_ range set to ‘10’
10
0.65
0.75
0.95
0.85
0.95
1.15
0.8
0.8
150
100
140
LSB
LSB
µs
kΩ
%FSR
Bits
SYMBOL
V
CC
V
UVLO
UVLO
HYS
I
CC
V
DBP
V
ABP
t
BOOT
V
CC
= 14V, V
EN
= 3.3V, no load on any
output
C
DBP
= 1µF, no load on any output
C
ABP
= 1µF, no load
V
CC
> V
UVLO
(Note 3)
-10
2.6
2.78
CONDITIONS
RESET
output asserted low
(Note 2)
50
3.8
2.7
2.88
0.8
5
2.8
2.96
1.5
+10
MIN
1.4
3
14
2.85
TYP
MAX
UNITS
V
V
mV
mA
V
V
ms
%
_______________________________________________________________________________________
3
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
MAX16047A/MAX16049A
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3V to 14V, T
A
= -40°C to +85°C, unless otherwise specified. Typical values are at V
CC
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
ADC MON_ Ranges
SYMBOL
ADC
RNG
CONDITIONS
MON_ range set to ‘00’ in r0Fh–r11h
MON_ range set to ‘01’ in r0Fh–r11h
MON_ range set to ‘10’ in r0Fh–r11h
MON_ range set to ‘00’ in r0Fh–r11h
ADC LSB Step Size
ADC
LSB
V
TH_EN_R
V
TH_EN_F
I
EN
MON_ range set to ‘01’ in r0Fh–r11h
MON_ range set to ‘10’ in r0Fh–r11h
EN Input-Voltage Threshold
EN Input Current
EN Input Voltage Range
CLOSED-LOOP TRACKING
Tracking Differential Voltage Stop
Ramp
Tracking Differential Voltage
Hysteresis
Tracking Differential Fault Voltage
V
TRK_F
V
INS_
> V
TH_PL
, V
INS_
< V
TH_PG
Slew-rate register set to ‘00’
Track/Sequence Slew-Rate
Rising or Falling
TRK
SLEW
Slew-rate register set to ‘01’
Slew-rate register set to ‘10’
Slew-rate register set to ‘11’
Power-good register set to ‘00,’
V
MON_
= 3.5V
Power-good register set to ‘01,’
V
MON_
= 3.5V
Power-good register set to ‘10,’
V
MON_
= 3.5V
Power-good register set to ‘11,’
V
MON_
= 3.5V
Power-Good Threshold
Hysteresis
Power-Low Threshold
Power-Low Hysteresis
GPIO_ Input Impedance
INS_ to GND Pulldown
Impedance when Enabled
V
PG_HYS
V
TH_PL
V
TH_PL_HYS
GPIO
INR
INS
RPD
GPIO_ configured as INS_
V
INS_
= 2V
75
INS_ falling
125
280
640
320
150
70
94
91.5
89
86.5
V
TRK
V
INS_
> V
TH_PL,
V
INS_
< V
TH_PG
150
20
325
800
400
200
100
95
92.5
90
87.5
0.5
142
10
100
100
145
160
370
960
480
230
115
96
93.5
%V
MON_
91
88.5
%V
TH_PG
mV
mV
kΩ
Ω
V/s
mV
%V
TRK
mV
EN voltage rising
EN voltage falling
0.486
-0.5
0
MIN
TYP
5.6
2.8
1.4
5.46
2.73
1.36
0.525
0.500
0.517
+0.5
5.5
V
µA
V
mV
V
MAX
UNITS
INS_ Power-Good Threshold
V
TH_PG
4
_______________________________________________________________________________________
12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3V to 14V, T
A
= -40°C to +85°C, unless otherwise specified. Typical values are at V
CC
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
Output-Voltage Low
Output-Voltage High (Push-Pull)
Output Leakage (Open Drain)
I
OUT_LKG
SYMBOL
V
OL
I
SINK
= 2mA
I
SOURCE
= 100µA
GPIO1–GPIO4, V
GPIO_
= 3.3V
GPIO1–GPIO4, V
GPIO_
= 5V
EN_OUT_ Overdrive (Charge
Pump) (EN_OUT1 to EN_OUT6
Only) Volts above V
MON_
EN_OUT_ Pullup Current (Charge
Pump)
EN_OUT_ Pulldown Current
(Charge Pump)
INPUTS (A0, GPIO_)
Logic-Input Low Voltage
Logic-Input High Voltage
SMBus INTERFACE
Logic-Input Low Voltage
Logic-Input High Voltage
Input Leakage Current
Output-Voltage Low
Input Capacitance
SMBus TIMING
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
Pulse Width of Spike Suppressed
V
OL
C
IN
f
SCL
t
BUF
t
SU:STA
t
HD:STA
t
SU:STO
t
LOW
t
HIGH
t
SU:DAT
t
OF
t
HD:DAT
t
SP
10pF
≤
C
BUS
≤
400pF
Receive
Transmit
T
A =
-40°C to +85°C
T
A =
-40°C to +125°C
0
0.3
30
0.9
1.3
0.6
0.6
0.6
1.3
0.6
200
250
500
V
IL
V
IH
Input voltage falling
Input voltage rising
V
CC
shorted to GND, SCL/SDA at 0V or
3.3V
I
SINK
= 3mA
5
400
2.0
-1
-1
+1
+1
0.4
V
pF
kHz
µs
µs
µs
µs
µs
µs
ns
ns
µs
ns
0.8
V
V
µA
V
IL
V
IH
2.0
0.8
V
V
V
OV
I
GATE_
= 0.5µA
During power-up/power-down,
V
GATE_
= 1V
During power-up/power-down,
V
GATE_
= 5V
4.6
5.1
2.4
1
1
23
5.6
V
µA
CONDITIONS
MIN
TYP
MAX
0.4
UNITS
V
V
OUTPUTS (EN_OUT_,
RESET,
GPIO_)
MAX16047A/MAX16049A
I
CHG_UP
I
CHG_DOWN
4.5
6
10
µA
µA
_______________________________________________________________________________________
5
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