Dual 1.5MHz 1.2A Step-Down Converters - ETA
Description
ETA3412
Dual 1.
5MHz 1.
2A Step-Down Converters in SOP8 Package
DESCRIPTION
The ETA3412 is a dual channel high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to 1.
2A of output current for each channel.
The devices operate from an input voltage range of 2.
6V to 6V and provide output voltages from 0.
6V to VIN, making the ETA3412 ideal for low voltage power conversions.
Running at a fixed frequency of 1.
5MHz allows the use of small inductance value and low DCR inductors, thereby achieving higher efficiencies.
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 voltages.
Built-in EMI reduction circuitry makes this converter ideal power supply for RF applications.
Internal soft-start control circuitry reduces inrush current.
Short-circuit and thermal-overload protection improves design reliability.
ETA3412 is housed in a SOP8 package
FEATURES
Up to 1.
2A Max Output Current 1.
5MHz Frequency Light Load operation Internal Compensation Available in SOP8
APPLICATIONS
USB ports/Hubs Hot Swaps Cellphones Tablet PC Set Top Boxes
ORDERING INFORMATION
PART PACKAGE PIN ETA3412S8A SOP8
TOP MARK
ETA3412-Product Number YWWPL-Date Code
TYPICAL APPLICATION
VIN1 2.
6V to 6V
VIN2 2.
6V to 6V
10uF
2 IN1 SW1 3
10uF 7 EN
1 FB1
ETA3412
2.
2uH 100K 22pF Optional 50K
VOUT1 1.
8V/1.
2A
10uF
6 IN2
SW2 5 2.
2uH
225K 22pF Optional
VOUT2 3.
3V/1.
2A
GND FB2 8
10uF
4 50K
Dual Step-Down Converter
ŋ
100% Efficiency Vs IOUT
95%
90%
85%
80%
75%
70%
65%
60%
55% 50%
VOUT=1.
8V
0.
01
VIN=2.
7V VIN=3.
6V VIN=5V
0.
1
IOUT (A)
1
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1
ETA3412
PIN CONFIGURATION
FB1 FB2
IN1
ETA3412
SW1
EN IN2
GND SW2
ABSOLUTEMAXIMUM RATINGS
(Note: Exceeding these limits may damage the device.
Exposure to absolute maximum rating conditions for long period...
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