MAX15035 Datasheet, PDF (2/27 Pages) Maxim Integrated Products – 15A Step-Down Regulator with Internal Switches

15A Step-Down Regulator with Internal Switches
ABSOLUTE MAXIMUM RATINGS
IN to PGND.............................................................-0.3V to +28V
TON to GND ...........................................................-0.3V to +28V
V_DD to GND ..............................................................-0.3V to +6V
V_CC to GND ................................................-0.3V to (V_DD + 0.3V)
EN, SKIP, PGOOD to GND.......................................-0.3V to +6V
REF, REFIN to GND....................................-0.3V to (V_CC + 0.3V)
ILIM, FB to GND .........................................-0.3V to (V_CC + 0.3V)
GND to PGND .......................................................-0.3V to +0.3V
LX to PGND ...............................................................-1V to +28V
BST to PGND...............................................(V_DD - 0.3V) to +34V
BST to LX..................................................................-0.3V to +6V
BST to V_DD .............................................................-0.3V to +28V
REF Short Circuit to GND ...........................................Continuous
IN RMS Current Rating (continuous)......................................15A
PGND RMS Current Rating (continuous) ...............................20A
Continuous Power Dissipation (T_A = +70°C)
40-Pin, 6mm x 6mm Thin QFN (T4066-MCM)
(derate 27mW/°C above +70°C) ................................2162mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ..........................................+150°C
Storage Temperature Range .............................-65°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
(Circuit of Figure 1, V_IN = 12V, V_DD = V_CC = V_EN = 5V, REFIN = ILIM = REF, SKIP = GND. T_A = 0°C to +85°C, unless otherwise spec-
ified. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
PWM CONTROLLER
Input Voltage Range
Quiescent Supply Current (V_DD)
Shutdown Supply Current (V_DD)
V_IN
I_DD + I_CC
I_SHDN
FB forced above REFIN
EN = GND, T_A = +25°C
4.5
26.0
V
0.7
1.2
mA
0.1
2
µA
V_CC Undervoltage Lockout
Threshold
V_UVLO(VCC)
Rising edge, PWM disabled below this
level; hysteresis = 100mV
3.95
4.2
4.45
V
V_DD-to-V_CC Resistance
On-Time
Minimum Off-Time
TON Shutdown Supply Current
REFIN Voltage Range
REFIN Input Current
FB Voltage Range
FB Voltage Accuracy
FB Input Bias Current
FB Output Low Voltage
Load-Regulation Error
Line-Regulation Error
R_CC
20
Ω
V_IN = 12V,
R_TON = 97.5kΩ (600kHz)
123
164
205
t_ON
V_FB = 1.0V
R_TON = 200kΩ (300kHz)
275
303
331
ns
(Note 3)
R_TON = 302.5kΩ (200kHz) 379
442
505
t_OFF(MIN) (Note 3)
225 350
ns
EN = GND, V_TON = 26V,
V_CC = 0V or 5V, T_A = +25°C
0.01
1
µA
V_REFIN (Note 2)
0
V_REF
V
I_REFIN T_A = +25°C, REFIN = 0.5V to 2V
-50
+50
nA
V_FB
(Note 2)
0
V_REF
V
V_REFIN = 0.5V,
T_A = +25°C
measured at FB,
V_IN = 4.5V to 26V, _{TA = 0°C to +85°C}
V_FB
SKIP = V_DD
V_REFIN = 1.0V
T_A = +25°C
T_A = 0°C to +85°C
0.495 0.5 0.505
0.493
0.507
V
0.995 1.0 1.005
0.993
1.007
V_REFIN = 2.0V
T_A = 0°C to +85°C
1.990 2.0 2.010
I_FB
V_FB = 0.5V to 2.0V, T_A = +25°C
-0.1
+0.1
µA
I_SINK = 3mA
0.4
V
SKIP = V_DD
0.1
%
V_CC = 4.5V to 5.5V, V_IN = 4.5V to 26V
0.2
%
2 _______________________________________________________________________________________