MAX1677EEE+ by Analog Devices

Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter

Status: Active
Series: MAX1677
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The MAX1677 is a compact, high-efficiency, dual-output boost converter for portable devices needing two regulated supplies, typically for logic and liquid crystal displays (LCDs). Operation with inputs as low as 0.7V allows the MAX1677 to accept 1, 2, or 3-cell alkaline, NiCd, or NiMH batteries as well as 1-cell lithium-ion batteries. The device requires no external FETs and can maintain regulation while consuming only 20µA, making it ideal for hand-held pen-input and PDA devices operating with low-current "sleep" states. The MAX1677's primary regulator supplies up to 350mA at either a factory-preset 3.3V or an adjustable 2.5V to 5.5V output. On-chip synchronous rectification provides efficiencies up to 95%. 300kHz (or externally clocked) pulse-width-modulation (PWM) operation is particularly suitable for applications needing low noise, such as those with wireless features. The primary converter also features pin-selectable pulse-frequency-modulation (PFM) operation that consumes only 20µA. A 1µA shutdown state also minimizes battery drain. The MAX1677's secondary step-up converter supplies up to +28V or -28V for LCD bias, varactor tuning, or other high-voltage, low-current functions. Other MAX1677 features include precision reference, logic control inputs for both regulators, and an uncommitted comparator for low-battery detection or a reset function. The MAX1677 is supplied in Maxim's compact 16-pin QSOP package, which occupies no more space than a standard SO-8.

Prices starting from US$3.98


Distributor Starting From Stock
Logo for element14 element14 US$5.58
-
Buy Now
Logo for Newark Electronics Newark Electronics -
-
Buy Now
View Full Pricing & Stock Comparison

Features

No External FETs Required
Main Output Up to 350mA for Logic Supply Fixed 3.3V or Adjustable (2.5V to 5.5V) Synchronous Rectification for High Efficiency (up to 95%) 300kHz (200kHz to 400kHz Synchronizable) Fixed-Frequency PWM Operation
Up to 350mA for Logic Supply
Fixed 3.3V or Adjustable (2.5V to 5.5V)
Synchronous Rectification for High Efficiency (up to 95%)
300kHz (200kHz to 400kHz Synchronizable)
Fixed-Frequency PWM Operation
Secondary Output Up to +28V or -28V for LCD Bias Programmable Current Limit
Up to +28V or -28V for LCD Bias
Programmable Current Limit
0.7V to 5.5V Input Voltage Range
20µA Quiescent Current
1µA Shutdown Current
Low-Battery Comparator
Small 16-Pin QSOP Package

Specifications

VIN (V) (min) 0.7
VIN (V) (max) 5.5
# Step-Up Outputs 2
VOUT (V) (min) 2.5
VOUT (V) (max) 5.5
Package/Pins QSOP/16
BudgetaryPrice (See Notes) 3.63


MAX1677EEE+ Semiconductors - ICs by Analog Devices

DC/DC CONV BOOST 400KHZ QSOP-16

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Input Voltage Min 700mV
Input Voltage Max 5.5V
No. of Outputs 2 Output, 2Outputs
DC / DC Converter IC Case QSOP
No. of Pins 16Pins
Output Current - Output 1 350mA
Output Current - Output 2 350mA
Output Voltage - Output 1 3.3V
Output Voltage - Output 2 28V
Regulator Output Type Fixed Adjustable
Switching Frequency 400kHz
Topology Boost (Step Up)
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

IC, DC DC CONV, HI EFF, 16QSOP | Farnell
Dc/Dc Conv, Boost, 400Khz, Qsop-16 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1677EEE+ ?

Additional datasheets, footprints and schematics for MAX1677EEE+ are listed on our Part Details page. You can also find images and similar parts to MAX1677EEE+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for MAX1677EEE+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MAX1677EEE+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the MAX1677EEE+ you can contact the distributor directly for product support, shipping queries etc.

Is the MAX1677EEE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1677EEE+ have stock available?

Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX1677EEE+ .

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for MAX1677EEE+ often in real-time on the comparison pages.

What if I can't find stock of MAX1677EEE+ ?

You can fill out our help required form which you can use to request a quote for MAX1677EEE+ from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay