ADP5037
Dual 3 MHz, 800 mA Buck Regulators with Two 300 mA LDOs
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Overview
Features and Benefits
- Main input voltage range: 2.3 V to 5.5 V
- Two 800 mA buck regulators and two 300 mA LDOs
- 24-lead, 4 mm × 4 mm LFCSP package
- Regulator accuracy: ±1.8%
- Factory programmable or external adjustable VOUTx
- 3 MHz buck operation with forced PWM and auto PWM/PSM modes
- BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
- LDO1/LDO2: output voltage range from 0.8 V to 5.2 V
- LDO1/LDO2: low input supply voltage from 1.7 V to 5.5 V
- LDO1/LDO2: high PSRR and low output noise
Product Details
The ADP5037 combines two high performance buck regulators and two low dropout (LDO) regulators in a small, 24-lead 4 mm × 4 mm LFCSP to meet demanding performance and board space requirements.
The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. When the MODE pin is set high, the buck regulators operate in forced PWM mode. When the MODE pin is set low and the load is above a predefined threshold, the buck regulators operate in PWM mode. When the load current falls below a predefined threshold, the regulator operates in power save mode (PSM), improving the light-load efficiency.
The two bucks operate out of phase to reduce the input capacitor requirement. The low quiescent current, low dropout voltage, and wide input voltage range of the ADP5037 LDOs extend the battery life of portable devices. The ADP5037 LDOs maintain power supply rejection greater than 60 dB for frequencies as high as 10 kHz while operating with a low headroom voltage.
Regulators in the ADP5037 are activated though dedicated enable pins. The default output voltages can be externally set in the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version.
APPLICATIONS
- Power for processors, ASICS, FPGAs, and RF chipsets
- Portable instrumentation and medical devices
- Space constrained devices
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
Tools & Simulations
Design Tools
5V uPMU BuckDesigner
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP5037ACPZ-1-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) | |
| ADP5037ACPZ-2-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) | |
| ADP5037ACPZ-3-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) | |
| ADP5037ACPZ-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data |
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.