MAX6746KA46+T Maxim Integrated, MAX6746KA46+T Datasheet - Page 2

• Manufacturer Part Number: MAX6746KA46+T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6746, MAX6747, MAX6748, MAX6749, MAX6750, MAX6751, MAX6752, MAX6753r

Specifications of MAX6746KA46+T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 1.575 V to 5 V
• Undervoltage Threshold: 4.533 V
• Overvoltage Threshold: 4.718 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 9.487 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Chip Enable Signals: No
• Maximum Power Dissipation: 714 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 5 uA
• Supply Voltage - Min: 1 V

PACKAGE THERMAL CHARACTERISTICS (Note 1)
Single-Port, 40W, IEEE 802.3af/802.3at PSE
Controller with Integrated MOSFET
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to V
AGND, DET, LED ..................................................-0.3V to +80V
OUT ......................................................-0.3V to (V
OUTP .......................................................-6V to (V
V EE_DIG ...............................................................-0.3V to +0.3V
OSC .........................................................................-0.3V to +6V
EN, 2-EVENT/PWMEN/LSCEN, MIDSPAN,
Maximum Current Into LED ................................................40mA
TQFN
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
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
V
2
AGND
POWER SUPPLIES
Operating Voltage Range
Supply Current
CURRENT LIMIT
Current Limit
Foldback Initial OUT Voltage
Foldback Final OUT Voltage
Minimum Foldback Current Limit
Threshold
AGND
LEGACY, ILIM1, ILIM2..........................................-0.3V to +4V
Junction-to-Ambient Thermal Resistance ....................... 29NC
Junction-to-Case Thermal Resistance .............................. 2NC
______________________________________________________________________________________
- V
- V
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PARAMETER
EE
EE
= 54V, T
= 32V to 60V, T
A
= +25NC. Currents are positive when entering the pin and negative otherwise.) (Note 2)
EE
, unless otherwise noted.)
A
= -40NC to +85NC, all voltages are referenced to V
V
SYMBOL
V
FLBK_END
V
FLBK_ST
I
TH_FB
AGND
I
I
LIM
EE
AGND
AGND
V
V
measured at AGND in power mode
Maximum
I
allowed
during
current-limit
conditions,
V
(Note 3)
V
limit starts folding back
V
limit reaches I
V
LOAD
AGND
OUT
OUT
AGND
AGND
OUT
+ 0.3V)
+ 0.3V)
= V
= 0V
= V
- V
- V
- V
EE
AGND
EE
OUT
OUT
, all logic inputs unconnected,
TH_FB
CONDITIONS
Class 0, 1, 2, 3
Class 4
Class 5 if ILIM1 = V
= unconnected
Class 5 if ILIM1 =
unconnected, ILIM2 = V
Class 5 if ILIM1 = V
= V
below which the current
below which the current
EE
Maximum Current Into OUT ......................... Internally regulated
Continuous Power Dissipation (T
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +150NC
Junction Temperature .....................................................+150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
TQFN (derate 34.5mW/NC above +70NC)...............2758.6mW
EE
EE
EE
, unless otherwise noted. Typical values are at
, ILIM2
, ILIM2
EE
MIN
400
684
807
855
902
32
A
= +70NC)
TYP
420
720
850
900
950
166
2.5
27
10
MAX
441
756
893
945
998
60
4
UNITS
mA
mA
mA
V
V
V