Datasheet

MAX5038/MAX5041
Dual-Phase, Parallelable, Average Current-Mode
Controllers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, circuit of Figure 1, T
A
= -40°C to +85°C, unless otherwise noted. Typical specifications are at T
A
= +25°C.) (Note 1)
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.
IN to SGND.............................................................-0.3V to +30V
BST_ to SGND…………………………………….…-0.3V to +35V
DH_ to LX_ ................................-0.3V to [(V
BST
_ - V
LX
_) + 0.3V]
DL_ to PGND..............................................-0.3V to (V
CC
+ 0.3V)
BST_ to LX_..............................................................-0.3V to +6V
V
CC
to SGND............................................................-0.3V to +6V
V
CC
to PGND............................................................-0.3V to +6V
SGND to PGND.....................................................-0.3V to +0.3V
All Other Pins to SGND...............................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
28-Pin SSOP (derate 9.5mW/°C above +70°C) ............762mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
SYSTEM SPECIFICATIONS
828
Input Voltage Range V
IN
Short IN and V
CC
together for +5V input
operation
4.75
5.5
V
Quiescent Supply Current I
Q
EN = V
CC
or SGND 4 10 mA
Efficiency η I
LOAD
= 52A (26A per phase) 90 %
OUTPUT VOLTAGE
MAX5038 only, no load
-0.8 +0.8
Nominal Output Voltage
Accuracy
MAX5038 only, no load, V
IN
= V
CC
=
+4.75V to +5.5V or V
IN
= +8V to +28V
(Note 2)
-1 +1
%
MAX5041 only, no load
0.992 1.008
MAX5041 only, no load, V
IN
= V
CC
=
+4.75V to +5.5V or V
IN
= +8V to +28V
0.990 1.010
MAX5041B only, no load
0.995 1.005
SENSE+ to SENSE- Voltage
Accuracy
MAX5041B only, no load,
V
IN
= +8V to +28V
0.995 1.005
V
STARTUP/INTERNAL REGULATOR
V
CC
Undervoltage Lockout UVLO V
CC
falling 4.0
4.15
4.5 V
V
CC
Undervoltage Lockout
Hysteresis
200
mV
V
CC
Output Accuracy V
IN
= +8V to +28V, I
SOURCE
= 0 to 80mA
4.85
5.1
5.30
V
MOSFET DRIVERS
Output Driver Impedance R
ON
Low or high output 1 3 Ω
Output Driver Source/Sink
Current
I
DH
_, I
DL
_
4A
Non-Overlap Time t
NO
C
DH
_
/DL
_ = 5nF 60 ns