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MAX15040
High-Efficiency, 4A, Step-Down Regulator with Integrated Switches in 2mm x 2mm Package
1MHz, Fixed-Frequency DC-DC Converter Delivers Up to 95% Efficiency
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Status
Active: In Production.
Description
The MAX15040 high-efficiency switching regulator delivers up to 4A load current at output voltages from 0.6V to (0.9 x VIN). The device operates from 2.4V to 3.6V, making it ideal for on-board point-of-load and postregulation applications. Total output-voltage accuracy 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 permit a Type III compensation scheme to achieve maximum 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 protection and peak current limit on both high-side (sourcing current) and low-side (sinking and sourcing current) MOSFETs, for ultra-safe operations in case of high output 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 reference 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 shutdown protection assures safe operation under all conditions. The MAX15040 is available in a 2mm x 2mm, 16-bump (4 x 4 array), 0.5mm pitch WLP package.
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Data Sheet
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An evaluation kit is available: MAX15040EVKIT
Key Features
- Internal 15mΩ RDS(ON) MOSFETs
- Continuous 4A Output Current
- ±1% Output-Voltage Accuracy Over Load, Line, and Temperature
- Operates from 2.4V to 3.6V Supply
- Adjustable Output from 0.6V to (0.9 x VIN)
- Adjustable Soft-Start Reduces Inrush Supply Current
- Factory-Trimmed 1MHz Switching Frequency
- Compatible with Ceramic, Polymer, and Electrolytic Output Capacitors
- Safe Startup into Prebias Output
- Enable Input/Power-Good Output
- Fully Protected Against Overcurrent and Overtemperature
- Overload Hiccup Protection
- Sink/Source Current in DDR Applications
- 2mm × 2mm, 16-Bump (4 x 4 Array), 0.5mm Pitch WLP Package
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Applications/Uses
- ASIC/CPU/DSP Core and I/O Voltages
- Base-Station Power Supplies
- DDR Power Supplies
- Point-of-Load
- RAID Control Power Supplies
- Server Power Supplies
- Telecom and Networking Power Supplies
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Key Specifications:
| Step-Down Switching Regulators |
| Part Number |
VIN
(V) |
VIN
(V) |
VOUT
(V) |
VOUT
(V) |
Max. IOUT
(A) |
Output Adjust. Method |
DC-DC Outputs |
Oper. Freq.
(kHz) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
min |
max |
≤ |
max w/pins |
See Notes |
| MAX15040 |
2.4 |
3.6 |
0.6 |
3.1 |
4 |
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1 |
1000 |
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4.5 |
$2.80 @1k |
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See All Step-Down Switching Regulators (288)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Product Guides
Reliability Reports
| Show FIT data for: |
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| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX15040EWE+T
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Active |
WLP;16 pin;4.5 mm²
Outline Drawing:21-0200 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: W162B2+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-4426
Rev 2;
2010-09-21
This page last modified: 2010-09-21
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