MAX15040 Maxim Integrated Products, MAX15040 Datasheet

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MAX15040

Manufacturer Part Number
MAX15040
Description
Step-Down Regulator
Manufacturer
Maxim Integrated Products
Datasheet
The MAX15040 high-efficiency switching regulator
delivers up to 4A load current at output voltages from
0.6V to (0.9 x V
3.6V, making it ideal for on-board point-of-load and
postregulation applications. Total output-voltage accu-
racy is within ±1% over load, line, and temperature.
The MAX15040 features 1MHz fixed-frequency PWM
mode operation. The high operating frequency allows
for small-size external components.
The low-resistance on-chip nMOS switches ensure high
efficiency at heavy loads while minimizing critical parasitic
inductances, making the layout a much simpler task with
respect to discrete solutions. Following a simple layout
and footprint ensures first-pass success in new designs.
The MAX15040 incorporates a high-bandwidth
(> 15MHz) voltage-error amplifier. The voltage-mode
control architecture and the voltage-error amplifier per-
mit a Type III compensation scheme to achieve maxi-
mum loop bandwidth, up to 200kHz. High loop
bandwidth provides fast transient response, resulting in
less required output capacitance and allowing for all-
ceramic capacitor designs.
The MAX15040 features an output overload hiccup pro-
tection and peak current limit on both high-side (sourc-
ing current) and low-side (sinking and sourcing current)
MOSFETs, for ultra-safe operations in case of high out-
put prebias, short-circuit conditions, severe overloads,
or in converters with bulk electrolytic capacitors.
The MAX15040 features an adjustable output voltage.
The output voltage is adjustable by using two external
resistors at the feedback or by applying an external ref-
erence voltage to the REFIN/SS input. The MAX15040
offers programmable soft-start time using one capacitor
to reduce input inrush current. A built-in thermal shut-
down protection assures safe operation under all condi-
tions. The MAX15040 is available in a 2mm x 2mm,
16-bump (4 x 4 array), 0.5mm pitch WLP package.
Pin Configuration appears at end of data sheet.
19-4426; Rev 2; 7/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
High-Efficiency, 4A, Step-Down Regulator with
Server Power Supplies
Point-of-Load
ASIC/CPU/DSP Core and I/O Voltages
DDR Power Supplies
Base-Station Power Supplies
Telecom and Networking Power Supplies
RAID Control Power Supplies
Integrated Switches in 2mm x 2mm Package
IN
________________________________________________________________ Maxim Integrated Products
). The device operates from 2.4V to
General Description
Applications
o Internal 15mΩ R
o Continuous 4A Output Current
o ±1% Output-Voltage Accuracy Over Load, Line,
o Operates from 2.4V to 3.6V Supply
o Adjustable Output from 0.6V to (0.9 x V
o Adjustable Soft-Start Reduces Inrush Supply
o Factory-Trimmed 1MHz Switching Frequency
o Compatible with Ceramic, Polymer, and
o Safe Startup into Prebias Output
o Enable Input/Power-Good Output
o Fully Protected Against Overcurrent and
o Overload Hiccup Protection
o Sink/Source Current in DDR Applications
o 2mm x 2mm, 16-Bump (4 x 4 Array), 0.5mm Pitch
+ Denotes a lead(Pb)-free/RoHS-compliant package.
2.4V TO 3.6V
and Temperature
Current
Electrolytic Output Capacitors
Overtemperature
WLP Package
M AX 15040E WE +
INPUT
PART
Typical Operating Circuit
IN
EN
V
REFIN/SS
DD
DS(ON)
MAX15040
Ordering Information
TEMP RANGE
- 40°C to + 85°C
GND
MOSFETs
PWRGD
COMP
GND
BST
LX
FB
www.DataSheet4U.com
PIN-PACKAGE
Features
IN
16 WLP
)
V
DD
OUTPUT
1

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