Evaluation Kit for the MAX686

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX686 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains two separate switching-regulator circuits. The first circuit converts a +0.8V to +18V battery voltage to a +18V LCD bias voltage for currents up to 20mA. The second circuit converts a +0.8V to +12V battery voltage to a-17V voltage for currents up to 20mA.

The MAX686 requires a +2.7V to +5.5V supply at VIN, but the inductor can be powered from as low as +0.8V. The device features an internal N-channel MOSFET switch, programmable current limit, and internal 6-bit DAC for digital adjustment of the output voltage. The MAX686 EV kit provides low quiescent current and high efficiency for maximum battery life. Operation up to 300kHz allows the use of a tiny surface-mount inductor.

Data Sheet

Download	Rev 1	(PDF, 112kB)
E-Mail

Key Features

Output Voltage:
- +18V Typical Positive Output (or +12.6V to +24V adjustable with up/down)
- -17V Typical Negative Output (or -22.7V to -11.4V adjustable with up/down)
Battery Input Voltage:
- +0.8V to +18V (Positive Output)
- +0.8V to +12V (Negative Output)
+2.7V to +5.5V VIN Supply Range
Up to 20mA Output Current
6-Bit DAC-Controlled Output Voltage
Internal 0.5A, 28V N-Channel Switch
1.3µA IC Shutdown Current
Up to 300kHz Switching Frequency
Surface-Mount Components
Fully Assembled and Tested

Applications/Uses

Notebook Computers
Palmtop Computers
PDAs and Other Handheld Devices
Portable Data-Collection Terminals
Positive or Negative LCD Bias
Varactor Tuning Diode Bias

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX686EVKIT			Active	KIT; Land Pattern: Not Available		See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Products with Similar Part Numbers

MAX686

DAC-Controlled Boost Inverter LCD Bias Supply with Internal Switch

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1327 Rev 1; 1998-02-01
This page last modified: 2007-07-19