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Maxim > Products > Power and Battery Management 
MAX8570, MAX8571, MAX8572, MAX8573, MAX8574, MAX8575
High-Efficiency LCD Boost with True Shutdown

First Fully Protected LCD and OLED Supplies in SOT23 Package


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Data Sheet
FULL DATA SHEET (PDF, 660kB)
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Description
The MAX8570 family of LCD step-up converters uses an internal n-channel switch and an internal p-channel output isolation switch. These converters operate from a 2.7V to 5.5V supply voltage and deliver up to 28V at the output.

A unique control scheme provides the highest efficiency over a wide range of load conditions. The internal MOSFET switch reduces external component count and a high switching frequency (up to 800kHz) allows for tiny surface-mount components. Three current-limit options are available. The MAX8570 and MAX8572 use a 110mA current limit to reduce ripple and component size in low-current applications. For high-power requirements, the MAX8574 and MAX8575 use a 500mA current limit and supply up to 20mA at 20V. The MAX8571 and MAX8573 use a 250mA current limit for a compromise between ripple and power. Built-in safety features protect the internal switch and down-stream components from fault conditions.

Additional features include a low quiescent current and a True Shutdown™ mode to save power. The MAX8570/MAX8571/MAX8574 allow the user to set the output voltage between 3V and 28V, and the MAX8572/MAX8573/MAX8575 have a preset 15V output. These step-up converters are ideal for small LCD panels with low current requirements, but can also be used in other applications. The MAX8571 evaluation kit is available to help reduce design time.

Key Features   Applications/Uses
  		• 15V or Adjustable Output Voltage Up to 28V
  		• Safety Features Protect Against Output Faults
  		• 20mA at 20V from a Single Li+ Battery
  		• True Shutdown
  		• 87% Efficiency
  		• Up to 800kHz Switching Frequency
  		• Small 6-Pin SOT23 Package

    		  
  		• Cell Phones/Cordless Phones
  		• Handy Terminals
  		• LCD Bias Generators
  		• Organizers
  		• Palmtop Computers
  		• PDAs and Other Handheld Devices
  		• Polymer LEDs (OLED)

    Key Specifications:   Step-Up Switching Regulators
    Part Number VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) Preset VOUT (V) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Features EV-Kit Package RoHS Available Operating Temp. Range (°C) Price**
    MAX8570  2.7 5.5 2.7 28  -  0.01 Resistor 0.035 1
    •Current Limit
    •Internal Power Switches
    •Shutdown
    •Soft Start
    •True Shutdown
    		 Yes SOT-23/6 Yes -40 to +85 $1.25 @ 1k
    MAX8571  2.7 28  -  0.015 Resistor $1.25 @ 1k
    MAX8572  15 15 15 0.01 Preset $1.25 @ 1k
    MAX8573  15 15 15 0.015 Preset $1.25 @ 1k
    MAX8574  2.7 28  -  0.025 Resistor $1.25 @ 1k
    MAX8575  15 15 15 0.025 Preset $1.25 @ 1k
    See All Step-Up Switching Regulators (89)

    Key Specifications:   Switch-Mode DC-DC Power Supplies
    Part Number Topology VIN (min) (V) VIN (max) (V) Number of DC-DC Outputs Preset VOUT (V) Digital/VID Programmed Output Max. Adjustable VOUT (V) IOUT (A) Operating Current, ICC (max) (mA) Internal Power Switch(es) Package Price**
    MAX8570  Step-Up 2.7 5.5 1  -  No 28 0.01 0.035 Yes SOT-23/6 $1.25 @ 1k
    MAX8571   -  28 0.015 $1.25 @ 1k
    MAX8572  15  -  0.01 $1.25 @ 1k
    MAX8573  15  -  0.015 $1.25 @ 1k
    MAX8574   -  28 0.025 $1.25 @ 1k
    MAX8575  15  -  0.025 $1.25 @ 1k
    See All Switch-Mode DC-DC Power Supplies (429)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX8570, MAX8571, MAX8572, MAX8573, MAX8574, MAX8575: Typical Application Circuit
    Typical Application Circuit

    Evaluation Kits
  		• MAX8571EVKIT

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * 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.


    Devices: 1-24 of 24

    MAX8570 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8570EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8570EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8570EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8570EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8571 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8571EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8571EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8571EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8571EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8572 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8572EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8572EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8572EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8572EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8573 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8573EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8573EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8573EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8573EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8574 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8574EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8574EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8574EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8574EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8575 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8575EUT+  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8575EUT  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8575EUT-T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8575EUT+T  
    		SOT-23;6 pin;
    Dwg: 21-0058I (PDF)
    Use pkgcode/variation: U6SN+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX8570 MAX8571 MAX8572 MAX8573 MAX8574 MAX8575
  		• New Product Press Release 2004-09-02 

    Related Products
    MAX1605 30V Internal Switch LCD Bias Supply
    MAX1606 28V Internal Switch LCD Bias Supply with True Shutdown

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    Document Ref.: 19-3329; Rev 1; 2004-11-02
    This page last modified: 2006-04-09




             


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