MAX8625AETD+T by Analog Devices

High-Efficiency, Seamless Transition, Step-Up/Down DC-DC Converter


The MAX8625A PWM step-up/down regulator is intended to power digital logic, hard disk drives, motors, and other loads in portable, battery-powered devices such as PDAs, cell phones, digital still cameras (DSCs), and MP3 players. The MAX8625A provides either a fixed 3.3V or adjustable output voltage (1.25V to 4V) at up to 0.8A from a 2.5V to 5.5V input. The MAX8625A utilizes a 2A peak current limit. Maxim's H-bridge topology provides a seamless transition through all operating modes without the glitches commonly seen with other devices. Four internal MOSFETs (two switches and two synchronous rectifiers) with internal compensation minimize external components. An active-low SKIP input selects a low-noise, fixed-frequency PWM mode, or a high-efficiency skip mode where the converter automatically switches to PFM mode under light loads for best light-load efficiency. The internal oscillator operates at 1MHz to allow for a small external inductor and capacitors. The MAX8625A features current-limit circuitry that shuts down the IC in the event of an output overload. In addition, soft-start circuitry reduces inrush current during startup. The IC also features True Shutdown™, which disconnects the output from the input when the IC is disabled. The MAX8625A is available in a 3mm x 3mm, 14-pin TDFN package.

Where to Buy

Prices starting from US$3.04

Distributor Stock
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Farnell
from US$4.03
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Schukat Electronic
from US$3.04
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Logo for Analog Devices
Analog Devices
from US$3.45
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Features

Four Internal MOSFET True H-Bridge Buck/Boost
Glitch-Free, Buck-Boost Transitions
Minimal Output Ripple Variation on Transitions
Up to 92% Efficiency
37µA (typ) Quiescent Current in Skip Mode
2.5V to 5.5V Input Range
Fixed 3.3V or Adjustable Output
1µA (max) Logic-Controlled Shutdown
True Shutdown
Output Overload Protection
Internal Compensation
Internal Soft-Start
1MHz Switching Frequency
Thermal-Overload Protection
Small 3mm x 3mm, 14-Pin TDFN Package

Specifications

VIN (V) (min) 2.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 1.25
VOUT1 (V) (max) 4
IOUT1 (A) (max) 0.8
Switch Type Internal
Preset VOUT (V) 3.3
Output Adjust. Method PresetResistor
Synchronous Switching? Yes
IQ (mA) (max) 0.045
# DC-DC Outputs 1
Switching Frequency (kHz) 1000
Package/Pins TDFN/14
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 3.22


MAX8625AETD+T Semiconductors - ICs by Analog Devices

DC/DC CONV BUCK BOOST 1MHZ TDFN-14

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

Specifications

Topology Buck Boost
Input Voltage Min 2.5V
Input Voltage Max 5.5V
DC / DC Converter IC Case TDFN
No. of Pins 14Pins
Output Current 800mA
Output Voltage Nom. 3.3V
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)

Alternative Descriptions

Buck/Boost Sw. Reg 3,3V/Adj 800mA TDFN14 | Schukat Electronic
High-Efficiency, Seamless Tran | Analog Devices
DC/DC CONV, BUCK, BOOST, 1MHZ, TDFN-14 | Farnell

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX8625AETD+T ?

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Is the MAX8625AETD+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Schukat Electronic, Analog Devices and Farnell have stock available or on a lead time for MAX8625AETD+T .

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