MAX5038 Datasheet, PDF (2/26 Pages) Maxim Integrated Products – Dual-Phase, Parallelable, Average Current-Mode Controllers

Dual-Phase, Parallelable, Average Current-Mode
Controllers
ABSOLUTE MAXIMUM RATINGS
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
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 = +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)
PARAMETER
SYSTEM SPECIFICATIONS
SYMBOL
CONDITIONS
Input Voltage Range
V_IN
Short IN and V_CC together for +5V input
operation
Quiescent Supply Current
Efficiency
OUTPUT VOLTAGE
I_Q
EN = V_CC or SGND
η
I_LOAD = 52A (26A per phase)
Nominal Output Voltage
Accuracy
MAX5038 only, no load
MAX5038 only, no load, V_IN = V_CC =
+4.75V to +5.5V or V_IN = +8V to +28V
(Note 2)
MAX5041 only, no load
SENSE+ to SENSE- Voltage
Accuracy
MAX5041 only, no load, V_IN = V_CC =
+4.75V to +5.5V or V_IN = +8V to +28V
MAX5041B only, no load
STARTUP/INTERNAL REGULATOR
V_CC Undervoltage Lockout
UVLO
V_CC Undervoltage Lockout
Hysteresis
MAX5041B only, no load,
V_IN = +8V to +28V
V_CC falling
V_CC Output Accuracy
MOSFET DRIVERS
Output Driver Impedance
Output Driver Source/Sink
Current
V_IN = +8V to +28V, I_SOURCE = 0 to 80mA
R_ON Low or high output
I_DH_, I_DL_
Non-Overlap Time
t_NO
C_DH__/DL_ = 5nF
MIN TYP MAX UNITS
8
28
V
4.75
5.5
4
10
mA
90
%
-0.8
-1
0.992
0.990
0.995
0.995
+0.8
%
+1
1.008
1.010
V
1.005
1.005
4.0
4.15
4.5
V
200
mV
4.85
5.1
5.30
V
1
3
Ω
4
A
60
ns
2 _______________________________________________________________________________________