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IC manufacturers Eta Solutions Co. Ltd.

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reference designETA3499

Eta Solutions Co. Ltd. ETA3499

3A, 1MHz Synchronous Buck Converter with 7.3V OVP

Overview

TopologyBuck Converter
Input voltage2.4-7.3 V
Output 13.3 V
IC revision1.0

Description

The ETA3499 is a high-efficiency, DC-DC step-down switching regulator, capable of delivering up to 3A output current. The devices operate from an input voltage range of 2.4V to 7.3V and provide output voltage from 0.6V to VIN, making ETA3499 ideal for low voltage power conversions. Running at a fixed frequency of 1MHz allows the use of small inductance value and low DCR inductors, thereby achieving higher efficiency. Other external components, such as ceramic input and output caps can also be small due to higher switching frequency, while maintaining exceptional low noise output voltage. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improved design reliability.

Features

  • Wide Input Voltage Range: 2.4 – 7.3V
  • Standby Current 42uA (Vout=1.2V, Iout=0A)
  • Up to 96% Efficiency
  • Up to 3A Max Output Current
  • 1MHz Frequency
  • Light Load operation
  • Internal Compensation
  • Tiny SOT23-6L Package

Typical applications

  • Set-Top-Box / IP camera / Telecom Devices

More information

Products

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Data­sheet
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Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
L(µH)
IR(A)
ISAT(A)
RDC(mΩ)
fres(MHz)
SamplesAvailability & Sample
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885012006004
SPECWCAP-CSGP MLCCs 10 V(DC), 22 pF, ±5%
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 10 V(DC)
Capacitance22 pF
Capacitance±5% 
Rated Voltage10 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor840 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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885012107014
SPECWCAP-CSGP MLCCs 16 V(DC), 10 µF, ±20%
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance10 µF
Capacitance±20% 
Rated Voltage16 V (DC)
Size0805 
Operating Temperature -55 °C up to +85 °C
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Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX5R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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74404063022
SPECWE-LQS SMT Power Inductor, –, –
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Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
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Size6028 
Operating Temperature -40 °C up to +125 °C
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Length6 mm
Width6 mm
Height2.8 mm
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Inductance2.2 µH
Rated Current3.75 A
Saturation Current5.6 A
DC Resistance20 mΩ
Self Resonant Frequency69 MHz
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