Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only; 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.
Operating Ratings
Supply Voltage (V
IN
)..........................................+10.8V to +13.2V
EN............................................................................ 0V to +5.5V
Bias Supply Voltage (V
DD
).................................+1.75V to +1.94V
Junction Temperature (T
J
).....................................0°C to +125°C
Package Information
12 FCQFN
Package Code
Outline Number
Land Pattern Number
THERMAL RESISTANCE
Junction to Case (θ
JC
) (max)
0.56°C/W
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages.
Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
P123A4F+2
21-0973
90-0477
(V
IN
= 12V ±10%, unless otherwise specified. T
J
= 0°C to +125°C, unless otherwise specified. Specifications are 100% production
tested at T
A
= +32°C. Limits over operating temperature range are guaranteed by design and characterization.)
PARAMETER
12V SUPPLY (V
IN
)
Supply Voltage Range
Supply Current
1.8V LINEAR REGULATOR (V
DD)
Supply Voltage Range
Supply Current
V
DD
UVLO Rising Threshold
V
DD
UVLO Falling Threshold
V
DD
UVLO Hysteresis
V
DD
UVLO Response Time
From below threshold to FET OFF
V
DD
I
DD
Supplied by the master IC (Note 1)
FET ON, IOUT = 0A
1.55
1.50
20
1.75
1.85
1.7
1.6
1.55
50
2
1.94
2.3
1.65
1.60
80
V
mA
V
V
mV
µs
V
IN
I
IN
(Note 1)
FET ON, IOUT = 0A
10.8
12
1.3
13.2
1.8
V
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Electrical Characteristics
UNDERVOLTAGE LOCKOUT: 1.8V SUPPLY (V
DD
)
www.maximintegrated.com
Maxim Integrated
│
3
MAX16543
Integrated Protection IC on a High-Power 12V Bus with
an Integrated MOSFET and Lossless Current Sensing
Electrical Characteristics (continued)
(V
IN
= 12V ±10%, unless otherwise specified. T
J
= 0°C to +125°C, unless otherwise specified. Specifications are 100% production
tested at T
A
= +32°C. Limits over operating temperature range are guaranteed by design and characterization.)
PARAMETER
BOOST VOLTAGE (V
BST
)
Supply Voltage Range
V
BST
BST voltage above V
OUT
. Supplied by the
master IC (Note 1)
1.2
0.9
100
From falling threshold to FET OFF
1.8
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
UNDERVOLTAGE LOCKOUT (V
BST)
V
BST
UVLO Rising Threshold
V
BST
UVLO Falling Threshold
V
BST
UVLO Hysteresis
V
BST
UVLO Response Time
V
BST
UVLO Digital Deglitch
INTEGRATED MOSFET CHARACTERISTICS
On-Resistance (Including
Package Resistance)
MAX16543 Safe OCP
Threshold
MAX16543 Safe OCP Delay
Linear Voltage Range
Linear I
OUT
Reporting Current
Range
I
OUT
Reporting Gain
GILOAD
CURRENT REPORTING (ILOAD)
(Note 4)
Current reporting range from a single
MAX16543 device
I
LOAD
current divided by I
OUT
current
(Note 4)
IOUT = 5A (Note 3)
Load Reporting Accuracy
IOUT = 10A (Note 3)
IOUT = 16A (Note 3)
IOUT = 35A (Note 3)
OVERTEMPERATURE PROTECTION (OTP)
Overtemperature Protection
Threshold
ENABLE PIN (EN)
Logic-High
Logic-Low
Hysteresis
Internal Pulldown
R
PD_EN
(Note 1)
V
IH
V
IL
450
800
1.41
0.40
V
V
mV
kΩ
T
OTP
(Notes 3, 5)
130
138
146
°C
-5.9
-4.1
-2.4
-1.8
0
0
5
1.35
35
V
A
µA/A
R
DS(ON)
(Note 1)
1.5
mΩ
1.3
1.1
170
2
10
1.4
1.3
240
V
V
mV
µs
µs
OVERCURRENT PROTECTION (OCP)
IOCP
IOCP_Delay
(Notes 2, 3)
(Note 2)
66
76
250
86
A
ns
ANALOG CURRENT REPORTING ACCURACY
+5.9
+4.1
+2.4
+1.8
%
www.maximintegrated.com
Maxim Integrated
│
4
MAX16543
Integrated Protection IC on a High-Power 12V Bus with
an Integrated MOSFET and Lossless Current Sensing
Electrical Characteristics (continued)
(V
IN
= 12V ±10%, unless otherwise specified. T
J
= 0°C to +125°C, unless otherwise specified. Specifications are 100% production
tested at T
A
= +32°C. Limits over operating temperature range are guaranteed by design and characterization.)
FAULT
PIN (I/O)
Logic High
Logic Low
Hysteresis
Input Delay
Internal Pulldown
FAULT
Output Low Voltage
Output Delay
t
D(IN)
R
PD_FB
V
OL
t
D(OUT)
From
FAULT
below V
IL
to FET V
GS
< V
T
(Note 1)
Sinking 4mA
From fault to start of
FAULT
falling
100
PARAMETER
SYMBOL
V
IH
V
IL
450
100
26
0.4
CONDITIONS
MIN
1.41
0.40
TYP
MAX
UNITS
V
V
mV
ns
Ω
V
ns
Note 1:
Denotes specifications that apply for typical operation junction temperature (T
J
= +32°C).
Note 2:
The protection IC system comprising master and follower devices has three additional types of OCP. Refer to the
MAX16545B/MAX16545C data sheet.
Note 3:
Min/max limits are ≥ 4σ above the mean.
Note 4:
Any current reported by the follower is added to the current reported by the master. The total protection IC system current
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