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Vishay FX5545G008 Data Sheet

Summary

Discover the FX5545G008, a high-density DC/DC Buck Converter designed for demanding portable electronics and industrial applications. This module delivers superior efficiency (up to 95%) and power density (>380W/in) while handling wide input ranges and multiple battery chemistries (Li+, NiCd, NiMH). The manual provides deep technical details on its programmable PWM/PSM control, robust temperature performance, and suitability for powering critical low-voltage chip sets, microcontrollers, and baseband logic. Ideal for engineers requiring ultra-reliable, compact power solutions.

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查询FX5545G0080V8B1供应商 FX5545G008 Vishay

Low Profile 3mm DC/DC Buck Converter 0.8V to 4.5V*, 3A with 380W/in3 Power Density

Efficiency up to 95%

FEATURES Fully integrated DC/DC converter Advanced development of FX5545G305 High efficiency over large load range 100% duty cycle Power density - more than 380W/inch3 1µA shutdown current 2.5V to 6V input range (1Li+ and 3-cell Ni Cd or Ni MH cells) 0.8V to 4.5V* output voltage Programmable PWM/PSM controls Low output ripple BGA construction Temperature range: - 40°C to + 85°C No external components required Output power 10W Maximum current 3A Low profile *Note: For higher putput voltage please consult factory at Function [email protected]

The DC/DC converter is a programmable topology The DC/DC converter is available in 20-ports BGA package. synchronized Buck converter for today’s continuous In order to satisfy the stringent ambient temperature changing portable electronic market. The DC/DC converter requirements, the DC/DC converter is designed to handle provides flexibility of utilizing various battery configurations the industrial temperature range of - 40°C to + 85°C.

and chemistries such as Ni Cd, Ni MH, or Li+ with an input

APPLICATION

voltage range of 2.5V to 6V. An additional flexibility is

Cordless phones, PDAs and others

provided with topology programmability to power multiple

loads such as power amplifiers, microcontrollers, or Supply voltage source for low-voltage chip sets

baseband logic IC’s. For ultra-high efficiency, converters are Point of Load (POL) applications such as drivers for

designed to operate in synchronous rectified PWM mode FPGA’s, microprocessors, DSP’s amplifiers, etc.

under full load while transforming into externally controlled Portable computers pulse-skipping mode (PSM) under light load.

Battery back-up supplies Cameras

ORDERING INFORMATION

FX G008

FUNCTION

SIZE CIRCUIT IDENTIFIER - G008 or G018

OUTPUT VOLTAGE - Example: 1.2V should be written as 1V2 as the V indicates the decimal point or ADJ for adjustable version - self selectable output voltage. G018ADJ is only available in the adjustable version for Vout = 0.9V - 1.3V. For design considerations please see ANF110 PACKAGING - B1 = 10pcs in bulk; B5 = 50pcs in bulk; T1 = 13” reel; T2 = 7” reel.

For lead (Pb)-free solder please add E2 suffix.

www.vishay.com For technical questions, contact Function [email protected] Document Number: 10126

For marketing questions, contact Function [email protected] Revision: 01-Mar-05

Page Summary Contents For Vishay FX5545G008 Data Sheet

Page 1 查询FX5545G0080V8B1供应商 FX5545G008 Vishay Low Profile 3mm DC/DC Buck Converter 0.8V to 4.5V*, 3A with 380W/in3 Power Density Efficiency up to 95% FEATURES Fully integrated DC/DC converter Advanced develo...
Page 2 FX5545G008 Vishay DIMENSIONS in inches [millimeters] 0.58 ± 0.01 [14.7 ± 0.25] 0.48 ± 0.01 [12.2 ± 0.25] 0.1 ± 0.01 [2.54 ± 0.25] 0.09 ± 0.01 [2.29 ± 0.25] 0.09 ± 0.01 [2.27 ± 0.25] 0.126 max [3.2 max...
Page 3 FX5545G008 Vishay STANDARD ELECTRICAL SPECIFICATIONS PARAMETER UNIT CONDITION MIN TYP MAX Input Voltage Range VDC 2.5 Quiescent Current µA PSM mode Soft Start Time ms TSS for Vout = 3.3V TSS for Vout ...
Page 4 FX5545G008 Vishay PWM MODE Vout Vs. lout* Vout Vs. Vin* Vin = 4.0V Δ Temp Vs. lout* Efficiency Vs. Lout* Above 25°C Ambient Temperature Vin = 6.0V; Vout = 3.3V Vout = 3.3A ff ic ie Vout Vs. lout* Vout...
Page 5 FX5545G008 Vishay PSM MODE Vout Vs. lout* Vout Vs. Vin* Vin = 4.0V Vin = 6V Efficiency Vs. lout* Vin = 4.0V; Vout = 3.3V Vout Vs. lout* Vout Vs. Vin* Vin = 4.0V Efficiency Vs. lout* Vin = 4.0V; Vout =...
Page 6 WWW.ALLDATASHEET.COM Copyright © Each Manufacturing Company. All Datasheets cannot be modified without permission. This datasheet has been download from : www.All Data Sheet.com 100% Free Data Sheet S...

Manual Details

Brand Vishay
Pages 6
File Size 658.87 KB
Published June 05, 2026
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Frequently Asked Questions

What input voltage range and battery types can this DC/DC converter handle?

It supports an input voltage range of 2.5V to 6V, compatible with Li+, NiCd, or NiMH battery configurations.

Does the device optimize efficiency for varying load conditions?

Yes, it uses Programmable PWM/PSM controls, allowing it to operate in Pulse-Skipping Mode (PSM) under light loads for ultra-high efficiency.

What is the operational temperature range of the converter?

The unit is designed to operate reliably across an industrial temperature range from -40°C to +85°C.

How can I order a custom or adjustable output voltage version?

You should use 'ADJ' for adjustable versions, such as G018ADJ, which was shown available for Vout = 0.9V - 1.3V.