Rainbow Electronics MAX15040 User Manual
Page 2
MAX15040
High-Efficiency, 4A, Step-Down Regulator with
Integrated Switches in 2mm x 2mm Package
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
DD
= 3.3V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, circuit of Figure 1, unless otherwise noted.) (Note 3)
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, V
DD
, PWRGD to GND ......................................-0.3V to +4.5V
LX to GND....................-0.3V to the lower of 4.5V or (V
IN
+ 0.3V)
LX Transient ..............(V
GND
- 1.5V, <50ns), (V
IN
+ 1.5V, <50ns)
COMP, FB, REFIN/SS,
EN to GND ..............-0.3V to the lower of 4.5V or (V
DD
+ 0.3V)
LX RMS Current (Note 1) .........................................................5A
BST to LX..................................................................-0.3V to +4V
BST to GND ..............................................................-0.3V to +8V
Continuous Power Dissipation (T
A
= +70°C)
16-Bump (4 x 4 Array), 0.5mm Pitch WLP
(derated 12.5mW/
°C above +70°C)...........................1000mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Continuous Operating Temperature at
Full Load Current (Note 2) ...........................................+105°C
Storage Temperature Range .............................-65°C to +150°C
Soldering Temperature (reflow) .......................................+260°C
Note 1: LX has internal clamp diodes to GND and IN. Applications that forward bias these diodes should take care not to exceed
the package power dissipation limit of the device.
Note 2: Continuous operation at full current beyond +105°C may degrade product life.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN/V
DD
IN and V
DD
Voltage Range
2.40
3.60
V
V
IN
= 2.5V
0.52
1
IN Supply Current
No load, no switching
V
IN
= 3.3V
0.8
1.5
mA
V
IN
= 2.5V
3.7
5.5
V
DD
Supply Current
No load, no switching
V
IN
= 3.3V
4
6
mA
V
IN
= V
DD
= 2.5V
12
Total Supply Current (IN + V
DD
)
No load
V
IN
= V
DD
= 3.3V
23
mA
Total Shutdown Current from IN
and V
DD
V
IN
= V
DD
= V
BST
- V
LX
= 3.6V, V
EN
= 0V
0.1
2
µA
V
DD
rising
2
2.2
V
DD
Undervoltage Lockout
Threshold
LX starts/stops switching
V
DD
falling
1.75
1.9
V
V
DD
UVLO Deglitching
2
µs
BST
T
A
= +25°C
2
BST Leakage Current
V
BST
= V
DD
= V
IN
= 3.6V,
V
LX
= 3.6V or 0V, V
EN
= 0V
T
A
= +85°C
0.025
µA
PWM COMPARATOR
PWM Comparator Propagation
Delay
10mV overdrive
10
ns
COMP
COMP Clamp Voltage High
V
DD
= 2.4V to 3.6V
2.03
V
COMP Clamp Voltage Low
V
DD
= 2.4V to 3.6V
0.73
V
COMP Slew Rate
1.6
V/µs
PWM Ramp Valley
V
DD
= 2.4V to 3.6V
830
mV
PWM Ramp Amplitude
1
V
COMP Shutdown Resistance
From COMP to GND, V
EN
= 0V
8
Ω