| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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3,600 pcs
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3600 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The MAX1678EUA is a high-efficiency, low-voltage, synchronous-rectified step-up DC-DC converter designed for devices powered by 1 to 3-cell batteries. It guarantees a 0.87V start-up voltage and features a low 37µA quiescent supply current.
This converter includes an integrated N-channel MOSFET power switch and a synchronous rectifier, eliminating the need for an external diode. It operates with pulse-frequency-modulation (PFM) control circuitry and includes features to reduce inductor ringing. The output voltage is preset to 3.3V but can be adjusted from 2V to 5.5V using two resistors. Efficiencies of up to 90% are achievable for loads up to 50mA.
The MAX1678EUA is available in an ultra-small, 1.1mm-high µMAX package, making it suitable for space-constrained applications. It also features an independent undervoltage comparator (PFI/PFO) and a logic-controlled 2µA shutdown mode. The device is ideal for pagers, remote controls, pointing devices, personal medical monitors, and other single-cell battery-powered devices.
Key electrical specifications include a 550mA switch current, 150kHz operating frequency, and output current capabilities of 45mA for a 1-cell input and 90mA for a 2-cell input at 3.3V. The operating temperature range is -40°C to +85°C. The package is an 8-uMAX/uSOP, suitable for surface mounting.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.08 | $1.08 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The MAX1678EUA provides a fixed 3.3V output or an adjustable output ranging from 2V to 5.5V.
The operating temperature range is -40°C to +85°C.
The device is available in an 8-uMAX/uSOP package (8-TSSOP, 8-MSOP with 0.118" width).
Efficiency is up to 90% at loads up to 50mA.
The typical quiescent current is 37µA (85µA from a 1.5V battery).
The guaranteed start-up voltage is 0.87V.
The internal switch current is rated at 550mA.