MAX857ESA+ by Analog Devices

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

Status: Active
Series: MAX857
RoHS: Unknown
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The MAX856-MAX859 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/MAX859 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-MAX859 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/MAX859 have a 125mA peak inductor current limit.

Prices starting from US$4.98


Distributor Starting From Stock
Logo for element14 element14 US$4.98
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Logo for Newark Electronics Newark Electronics -
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Features

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

Specifications

VIN (V) (min) 0.8
VIN (V) (max) 6
VOUT1 (V) (min) 2.7
VOUT1 (V) (max) 6
IOUT1 (A) (max) 0.15
Switch Type Internal
Output Adjust. Method Resistor
Power Good Signal Yes
IQ (mA) (typ) 0.025
Shutdown Mode Supply Current (µA) (typ) 1
Shutdown Mode Supply Current (µA) (max) 5
# DC-DC Outputs 1
Switching Frequency (kHz) 500
Package/Pins SOIC (N)/8
BudgetaryPrice (See Notes) 2.57


MAX857ESA+ Semiconductors - ICs by Analog Devices

DC/DC CONV BOOST 500KHZ NSOIC-8

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

Specifications

Topology Boost (Step Up)
Input Voltage Min 800mV
Input Voltage Max 6V
No. of Outputs 1Outputs
DC / DC Converter IC Case NSOIC
No. of Pins 8Pins
Output Current 100mA
Output Voltage Min 2.7V
Output Voltage Max 6V
Switching Frequency 500kHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

DC/DC CONV, BOOST, 500KHZ, NSOIC-8 | Farnell
Dc/Dc Conv, Boost, 500Khz, Nsoic-8 | Newark Electronics

Frequently Asked Questions

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Is the MAX857ESA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX857ESA+ have stock available?

Authorised distributors including Farnell, element14 and Newark Electronics have stock available or on a lead time for MAX857ESA+ .

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