MAX1765EUE+ by Analog Devices

800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator


The MAX1765 is a high-efficiency, low-noise, step-up DC-DC converter intended for use in battery-powered wireless applications. This device operates at a high 1MHz fixed frequency while maintaining an exceptionally low quiescent supply current (200µA). Its small external components and tiny package make this device an excellent choice for small hand-held applications that require the longest possible battery life. The MAX1765 uses a synchronous-rectified pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from a wide range of input sources, such as one to three alkaline or NiCd/NiMH cells or a single lithium-ion (Li+) cell. Maxim's proprietary architecture significantly improves efficiency at low load currents while automatically transitioning to fixed-frequency PWM operation at medium to high load currents to maintain excellent full-load efficiency. Forced-PWM mode is available for applications that require constant-frequency operation at all load currents, and the MAX1765 may also be synchronized to an external clock to protect sensitive frequency bands in communications equipment. The MAX1765's low-dropout (LDO) linear regulator and DC-DC converter have separate shutdown control. The linear regulator's 250mΩ pass device maintains excellent dropout voltage at currents up to 500mA. The MAX1765 also features analog soft-start and current-limit functions to permit optimization of efficiency, external component size, and output voltage ripple. The MAX1765 comes in a 16-pin QSOP package and a thermally enhanced 16-pin TSSOP-EP.

Where to Buy

Prices starting from US$3.55

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Features

High-Efficiency Step-Up Converter Up to 93% Efficiency Adjustable Output from +2.5V to +5.5V Up to 800mA Output PWM Synchronous-Rectified Topology 1MHz Operating Frequency (or Sync)
Up to 93% Efficiency
Adjustable Output from +2.5V to +5.5V
Up to 800mA Output
PWM Synchronous-Rectified Topology
1MHz Operating Frequency (or Sync)
LDO Linear Regulator 500mA LDO Linear Regulator 2.85V Linear Regulator Output or Adjustable (1.25V to 5V) Low 125mV Dropout at 500mA
500mA LDO Linear Regulator
2.85V Linear Regulator Output or Adjustable (1.25V to 5V)
Low 125mV Dropout at 500mA
+0.7V to +5.5V Input Range
0.1µA Logic-Controlled Shutdown
Adjustable Inductor Current Limit and Soft-Start
Thermal Shutdown
1.5W, 16-Pin TSSOP-EP Package Available

Specifications

VIN (V) (min) 1
VIN (V) (max) 5.5
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 5
IOUT1 (A) (max) 0.8
Switch Type Internal
Preset VOUT (V) 1.252.85
Output Adjust. Method PresetResistor
Synchronous Switching? Yes
IQ (mA) (max) 0.2
# DC-DC Outputs 1
Alternate Topology Step-Up
# LDO/ Op.Amp. Outputs 1
Switching Frequency (kHz) 1000
Package/Pins QSOP/16TSSOP/16
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 3.2


MAX1765EUE+ Semiconductors - ICs by Analog Devices

POWER MANAGEMENT UNIT BOOST TSSOP-16

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

Specifications

Topology Boost
Input Voltage Min 700mV
Input Voltage Max 5.5V
No. of Outputs 2Outputs
DC / DC Converter IC Case TSSOP
No. of Pins 16Pins
Output Current 800mA
Output Voltage Min 2.5V
Output Voltage Max 5.5V
Switching Frequency 1MHz
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)
No. of Regulated Outputs 2
No. of Step-Down DC - DC Converters 1
Operating Temperature Min -40°C
Supply Voltage 5.5V

Alternative Descriptions

800mA, Low-Noise, Step-Up DC-D | Analog Devices
Power Management Unit, Boost, Tssop-16 | Newark Electronics
POWER MANAGEMENT UNIT, BOOST, TSSOP-16 | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1765EUE+ ?

Additional datasheets, footprints and schematics for MAX1765EUE+ are listed on our Part Details page. You can also find images and similar parts to MAX1765EUE+ on this page.

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Is the MAX1765EUE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1765EUE+ have stock available?

Authorised distributors including Analog Devices, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX1765EUE+ .

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