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MAX710

3.3V/5V or Adjustable, Step-Up Step-Down DC-DC Converters

Compact, Low-Noise, Transformerless Step-Up/Down Regulator with Single Small Inductor Has Low Output Ripple

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Overview

Description

The MAX710/MAX711 integrate a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion. They are optimized for battery applications where the input varies above and below the regulated output voltage. They have an input range from +1.8V to +11V. Typical efficiency when boosting battery inputs is 85%.

The MAX710/MAX711 can be configured for minimum noise or optimum efficiency. Shutdown control turns off the part completely, disconnecting the input from the output (I_SHDN = 0.2µA). Standby control turns off only the step-up converter and leaves the low-power linear regulator active (I_Q = 7µA).

The MAX710 has a preset 3.3V or 5V output voltage. The MAX711 has an adjustable output that can be set from +2.7V to +5.5V with two resistors. Both devices come in 16-pin narrow SO packages.

MAX710, MAX711: Typical Operating Circuit

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Key Features

Step-Up/Down Voltage Conversion
+1.8V to +11V Input Range
Output:
- 5V/250mA at V_IN = 1.8V
- 5V/500mA at V_IN = 3.6V
No External FETs Required
Load Disconnected from Input in Shutdown
Battery Drain:
- 200µA No-Load (V_IN = 4V)
- 7µA in Standby
- 0.2µA when Off
Low-Noise and High-Efficiency Modes

Applications/Uses

2- to 4-Cell AA Alkaline Handheld Equipment
2-, 3-, and 4-Cell Battery-Powered Equipment
3.3V and Other Low-Voltage Systems
Battery-Powered Devices with AC Input Adapters
Digital Still Cameras
Single-Cell, Lithium-Powered Portable Devices

Design Resources

MAX710EVKIT: Evaluation Kit for the MAX710, MAX711

Quality and Environmental Data

Product Reliability Reports: MAX710.pdf
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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