MAX1817EUB+T
ActiveCOMPACT, HIGH-EFFICIENCY, DUAL-OUTPUT, STEP-UP DC-DC CONVERTER
MAX1817EUB+T
ActiveCOMPACT, HIGH-EFFICIENCY, DUAL-OUTPUT, STEP-UP DC-DC CONVERTER
Description
General part information
MAX1817 Series
The MAX1817 is a compact, high-efficiency, dual-output step-up converter for portable devices that provides both the main logic supply and the LCD bias. The device operates from an input voltage of +1.5V to +5.5V, allowing the use of 2- or 3-cell alkaline batteries, or 1-cell lithium-ion (Li+) batteries.The MAX1817's main regulator supplies 125mA at either a preset 3.3V or an adjustable 2.5V to 5.5V output voltage with up to 88% efficiency. A 0.1µA shutdown state also minimizes battery drain. The MAX1817's secondary step-up converter provides the LCD bias voltage and is adjustable up to +28V.Other features include a fast switching frequency to reduce the size of external components and a low quiescent current to maximize battery life. Both outputs can be independently shut down for improved flexibility.The MAX1817 is supplied in a compact 10-pin µMAX package. The MAX1817 evaluation kit (MAX1817EVKIT) is available to speed up design.ApplicationsGPS ReceiversMP3 PlayersOrganizers/TranslatorsPDAs
Technical Specifications
Parameters and characteristics for this part
| Specification | MAX1817EUB+T |
|---|---|
| Current - Output (Switch) (Value 1) | 250 mA |
| Current - Output (Switch) (Value 2) | 420 mA |
| Frequency - Switching | 500 kHz |
| Function | Step-Up |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable (Programmable) |
| Package Length | 0.118 in |
| Package Name | 10-TFSOP, 10-MSOP, 10-uMAX/uSOP |
| Package Width | 3 mm |
| Synchronous Rectifier | No |
| Topology | Boost |
| Voltage - Input (Max) | 5.5 V |
| Voltage - Input (Min) | 1.5 V |
| Voltage - Output (Max) (Option 1) | 5.5 V |
| Voltage - Output (Max) (Option 2) | 28 V |
| Voltage - Output (Min/Fixed) | 2.5 V, 3.3 V, 1.25 V |
Pricing
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