Products > Integrated Circuits (ICs) > Power Management ICs > MAX859ESA

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

  • Package/Case :
  • SOIC-8
  • Product Categories :
  • Switch, DC to DC regulator, the controller
  • RoHs Status:
  • Lead free/RoHS Compliant
  • In-stock:
  • 7393


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MAX859ESA Product Details

The MAX856-MAX859ESA are high-efficiency, CMOS, step-up, DC-DC switching regulators for small, low input voltage or battery-powered systems. The MAX856/MAX858 accept a positive input voltage between 0.8V and VOUT and convert it to a higher, pin-selectable output voltage of 3.3V or 5V. The MAX857/MAX859ESA adjustable versions accept 0.8V to 6.0V input voltages and generate higher adjustable output voltages in the 2.7V to 6.0V range. Typical efficiencies are greater than 85%. Typical quiescent supply current is 25μA (1μA in shutdown). The MAX856-MAX859ESA combine ultra-low quiescent supply current and high efficiency to give maximum battery life. An internal MOSFET power transistor permits high switching frequencies. This benefit, combined with internally set peak inductor current limits, permits the use of small, low-cost inductors. The MAX856/MAX857 have a 500mA peak inductor current limit. The MAX858/MAX859ESA have a 125mA peak inductor current limit.



  • 0.8V to 6.0V Input Supply Voltage
  • 0.8V Typ Start-Up Supply Voltage
  • 85% Efficiency at 100mA
  • 25μA Quiescent Current
  • 1μA Shutdown Mode
  • 125mA and 500mA Switch-Current Limits Permit Use of Low-Cost Inductors
  • Up to 500kHz Switching Frequency
  • ±1.5% Reference Tolerance Over Temperature
  • Low-Battery Detector (LBI/LBO)
  • 8-Pin SO and μMax Packages



  • 2-Cell and 3-Cell Battery-Operated Equipment
  • 3.3V to 5V Step-Up Conversion
  • Glucose Meters
  • Medical Instrumentation
  • Palmtop Computers
  • Personal Data Communicators/Computers
  • Portable Data-Collection Equipment

MAX859ESA Block Diagram
(Picture: Diagram)

Technical Parameters

  • Input Voltage MAX
  • 6 V
  • Switching Frequency
  • 500 kHz
  • Output Voltage
  • 2.7 V to 6 V
  • Output Current
  • 0.06 A
  • Number of Outputs
  • 1
  • Maximum Operating Temperature
  • + 85 C
  • Mounting Style
  • Input Voltage MIN
  • 0.8 V
  • Minimum Operating Temperature
  • - 40 C
  • Package / Case
  • SOIC-8 Narrow
  • Series
  • MAX859
  • Type
  • Step Up

MAX859ESA Documents

MAX859ESA Related Products

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Estimated Delivery Time: Apr 18 - Apr 23 days (choose Expedited at checkout).

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  • Ship Fee
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  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that MAX859ESA is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their MAX859ESA devices; we pay more attention to the channels and quality of MAX859ESA products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MAX859ESA chips? Including MAXIM original factory information, Switch, DC to DC regulator, the controller application, MAX859ESA pictures?
You can use Jotrin's intelligent search engine, or filter by Step-Up Switching Regulators category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's MAX859ESA price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MAX859ESA, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of MAX859ESA?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MAX859ESA we delivered, we will accept the replacement or return of the MAX859ESA only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of MAX859ESA.
(3)The MAX859ESA is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as MAX859ESA datasheet pdf, MAX859 pin diagram?
Need any After-Sales service, please feel free contact us:

Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....
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