MAX1928EUB15+
ActiveLOW-OUTPUT-VOLTAGE, 800MA, PWM STEP-DOWN DC-DC CONVERTERS
MAX1928EUB15+
ActiveLOW-OUTPUT-VOLTAGE, 800MA, PWM STEP-DOWN DC-DC CONVERTERS
Description
General part information
MAX1928 Series
The MAX1927/MAX1928 800mA step-down converters power low-voltage microprocessors in compact equipment requiring the highest possible efficiency. The MAX1927/MAX1928 are optimized for generating low output voltages (down to 750mV) at high efficiency using small external components. The supply voltage range is from 2.6V to 5.5V and the guaranteed minimum output current is 800mA. 1MHz pulse-width modulation (PWM) switching allows for small external components. A unique control scheme minimizes ripple at light loads, while maintaining a low 140µA quiescent current.The MAX1927/MAX1928 include a low on-resistance internal MOSFET switch and synchronous rectifier to maximize efficiency and minimize external component count. No external diode is needed. 100% duty-cycle operation allows for a dropout voltage of only 340mV at 800mA. Other features include internal soft-start, power-OK (POK) output, and selectable forced PWM operation for lower noise at all load currents.The MAX1928 is available with several preset output voltages: 1.5V (MAX1928-15), 1.8V (MAX1928-18), and 2.5V (MAX1928-25). The MAX1927R has adjustable output range down to 0.75V. The MAX1927/MAX1928 are available in a tiny 10-pin µMAX package.ApplicationsBattery-Powered EquipmentDSP Core PowerPDAs and PalmtopsWCDMA Handsets
Technical Specifications
Parameters and characteristics for this part
| Specification | MAX1928EUB15+ |
|---|---|
| Current - Output | 800 mA |
| Frequency - Switching (Max) | 1.2 MHz |
| Frequency - Switching (Min) | 800 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Type | Fixed |
| Package Length | 0.118 in |
| Package Name | 10-uMAX/uSOP, 10-TFSOP, 10-MSOP |
| Package Width | 3 mm |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Input (Max) | 5.5 V |
| Voltage - Input (Min) | 2.6 V |
| Voltage - Output (Min/Fixed) | 1.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Sign in to see pricing
Create a free account to access distributor pricing data.
CAD
3D models and CAD resources for this part
Documents
Technical documentation and resources
