MAX887HESA+ by Analog Devices

100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter


The MAX887 high-efficiency, step-down DC-DC converter provides an adjustable output from 1.25V to 10.5V. It accepts inputs from 3.5V to 11V and delivers 600mA. Operation to 100% duty cycle minimizes dropout voltage (300mV typ at 500mA). Synchronous rectification reduces output rectifier losses, resulting in efficiency as high as 95%. Fixed-frequency pulse-width modulation (PWM) reduces noise in sensitive communications applications. Using a high-frequency internal oscillator allows tiny surface-mount components to reduce PC board area, and eliminates audio-frequency interference. A SYNC input allows synchronization to an external clock to avoid interference with sensitive RF and data-acquisition circuits. The MAX887 features current-mode operation for superior load/line-transient response. Cycle-by-cycle current limiting protects the internal MOSFET and rectifier. A low-current (2.5µA typ) shutdown mode conserves battery life.

Where to Buy

Prices starting from US$3.39

Distributor Stock
Logo for RS
RS
from US$4.81
454
in stock
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Analog Devices
from US$4.04
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CoreStaff
from US$3.39
77
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Newark Electronics
from US$4.75
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Schukat Electronic
from US$4.27
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element14
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Farnell
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Features

95% Efficiency
600mA Output Current
Cycle-by-Cycle Current Limiting
Low-Dropout, 100% Duty-Cycle Operation, 300mV at 500mA
Internal 0.6Ω (typ) MOSFET
Internal Synchronous Rectifier
High-Frequency Current-Mode PWM
External SYNC or Internal 300kHz Oscillator
Guaranteed 260kHz to 340kHz Internal Oscillator Frequency Limits
2.5µA Shutdown Mode

Specifications

VIN (V) (min) 3.5
VIN (V) (max) 11
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 10
IOUT1 (A) (max) 0.6
Switch Type Internal
Output Adjust. Method Resistor
# DC-DC Outputs 1
Switching Frequency (kHz) 440
Package/Pins SOIC (N)/8
BudgetaryPrice (See Notes) 3.04


MAX887HESA+ Semiconductors - ICs by Analog Devices

IC DC DC CONVERTER 8-SO

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

Specifications

Topology Buck (Step Down)
Input Voltage Min 3.5V
Input Voltage Max 11V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOIC
No. of Pins 8Pins
Output Current 600mA
Output Voltage Min 1.25V
Output Voltage Max 10.5V
Switching Frequency 340kHz
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)
Adjustable Output Voltage Min 1.25V
Base Number 887
Dropout Voltage Vdo 0.3V
Frequency 300kHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Output Voltage 10.5V
Primary Input Voltage 11V
Supply Voltage Min 3.5V
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)

Alternative Descriptions

100 Duty Cycle, Low-Noise, Ste | Analog Devices
I.C. MAX887HESA | RS
Dc/Dc Conv, Buck, 340Khz, 85Deg C | Newark Electronics
Buck Switch. Reg Adj 600mA 3,5-11Vi SO8 | Schukat Electronic
IC, DC DC CONVERTER, 8-SO | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX887HESA+ ?

Additional datasheets, footprints and schematics for MAX887HESA+ are listed on our Part Details page. You can also find images and similar parts to MAX887HESA+ on this page.

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Is the MAX887HESA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX887HESA+ have stock available?

Authorised distributors including Analog Devices, RS, CoreStaff, Newark Electronics and Schukat Electronic have stock available or on a lead time for MAX887HESA+ .

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