MAX15109 Datasheet, PDF (2/19 Pages) Maxim Integrated Products – High-Efficiency, 8A, Current-Mode Synchronous Step-Down Switching Regulator

High-Efficiency, 8A, Current-Mode Synchronous
Step-Down Switching Regulator with VID Control
ABSOLUTE MAXIMUM RATINGS
IN, PGOOD to PGND...............................................-0.3V to +6V
LX to PGND.................................................-0.3V to (VIN + 0.3V)
LX to PGND......................................-1V to (VIN + 0.3V) for 50ns
EN, COMP, FB, SS, VID0,
VID1 to PGND.........................................-0.3V to (VIN + 0.3V)
LX Current (Note 1)................................................ -12A to +12A
Output Short-Circuit Duration....................................Continuous
Continuous Power Dissipation (TA = +70NC)
WLP (derate 21.3mW/NC above TA = +70NC)..........745.5mW
Operating Temperature Range........................... -40NC to +85NC
Operating Junction Temperature (Note 2)......................+105NC
Storage Temperature Range............................ -65NC to +150NC
Soldering Temperature (reflow) (Note 3).........................+260NC
Note 1: LX has internal clamp diodes to PGND and IN. Do not exceed the power dissipation limits of the device when forward
biasing these diodes.
Note 2: Limit the junction temperature to +105NC for continuous operation at full current.
Note 3: The WLP package is constructed using a unique set of package techniques that impose a limit on the thermal profile the
device can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder pro-
files recommended in the industry-standard specification JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection
reflow. Preheating is required. Hand or wave soldering is not allowed.
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
(VIN = 5V, CSS = 4.7nF, TA = TJ = -40NC to +85NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 4)
PARAMETER
IN Voltage Range
IN Shutdown Supply Current
IN Supply Current
VIN Undervoltage Lockout Threshold
VIN Undervoltage Lockout Hysteresis
ERROR AMPLIFIER
Transconductance
Voltage Gain
Output Voltage Accuracy
FB Input Bias Current
COMP to Current-Sense
Transconductance
SYMBOL
CONDITIONS
VIN
VEN = 0V
IIN
VEN = 5V, VFB = 1V, not switching
LX starts switching, VIN rising
LX stops switching, VIN falling
gMV
AVEA
VFB
IFB
GMOD
Over line, load, and temperature
MIN TYP MAX
2.7
5.5
0.3
3
3.4
6
2.6
2.7
200
-1
-100
1.4
90
+1
+100
25
COMP Clamp Low
VFB = 0.68V
0.93
Compensation RAMP Valley
1
POWER SWITCHES
High-Side Switch Current-Limit
Threshold
IHSCL
14
Low-Side Switch Sink
Current-Limit Threshold
14
Low-Side Switch Source
Current-Limit Threshold
14
UNITS
V
FA
mA
V
mV
mS
dB
%
nA
A/V
V
V
A
A
A
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