ETA3496 Buck Converter Datasheet

ETA3496 Datasheet, PDF, Equivalent


Part Number

ETA3496

Description

1.2MHz Synchronous Buck Converter

Manufacture

ETA

Total Page 3 Pages
Datasheet
Download ETA3496 Datasheet


ETA3496
ETA3496
1.2A, 1.2MHz Synchronous Buck Converter with 7.2V OVP
DESCRIPTION
The ETA3496 is a high-efficiency, DC-to-DC step-down
switching regulator, capable of delivering up to 1.2A of
output current. The devices operate from an input voltage
range of 2.5V to 7.2V and provide output voltages from
0.9V to 5V, making the ETA3496 ideal for low voltage power
conversions. Running at a fixed frequency of 1.2MHz 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.
ETA3496 is housed in a tiny SOT23-5L package
FEATURES
Wide Input Voltage Range: 2.2 7.2V
Standby Current 40uA (Vout=3.3V, Iout=0A)
Up to 96% Efficiency
Up to 1.2A Max Output Current
1.2MHz Frequency
Light Load operation
Internal Compensation
Tiny SOT23-5L Package
APPLICATIONS
Set-Top Box
Mobile Wi-Fi Hotspot
IPTV
All devices powered by 5V adapter
TYPICAL APPLICATION
ORDERING INFORMATION
PART No.
ETA3496S2F
PACKAGE
SOT23-5
TOP MARK
BFYW
Pcs/Reel
3000
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ETA3496
ETA3496
PIN CONFIGURATION
EN 1
GND 2
SW 3
5 FB
SOT23-5
4 IN
ABSOLUTEMAXIMUM RATINGS
(Note: Exceeding these limits may damage the device. Exposure to absolute maximum
rating conditions for long periods may affect device reliability.)
IN, SW, FB, EN Voltage...............................................0.3V to 12V
SW to ground current ..............................................................1.8A
Maximum Power Dissipation………………….………………….400mW
Operating Temperature Range ………………....…–40°C to 85°C
Storage Temperature Range ……………..……….–55°C to 150°C
Thermal Resistance
θJC θJA
SOT23-5……………………………………110……………….220 ...... °C/W
Lead Temperature (Soldering, 10ssec) ………….………….260°C
ESD HBM (Human Body Mode) …………….………..……..………….2KV
ESD MM (Machine Mode) ……………………..………….…………….200V
ELECTRICAL CHACRACTERISTICS
(VIN = 3.6V, unless otherwise specified. Typical values are at TA = 25oC.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
2.5 7.2 V
Input UVLO
Rising, Hysteresis=200mV
2.15 2.3 2.45 V
Input Supply Current
VFB =0.65V
34 60 μA
Input Shutdown Current
1 μA
FB Feedback Voltage
VIN =3.6V
0.588 0.6 0.612
V
FB Input Current
0.01 μA
Output Voltage Range
0.9 VIN V
Load Regulation
Iload =0.2A to 1A
0.1 %/A
Line Regulation
VIN =2.7 to 5.5V@ Iload=1A
0.06 %/V
Switching Frequency
1.2 MHz
NMOS Switch On Resistance
ISW =200mA
173 m
PMOS Switch On Resistance
ISW =200mA
318 m
PMOS Switch Current Limit
1.8 A
SW Leakage Current
VIN=5.5V,VSW=0 or 5.5V,EN= GND
10 μA
EN Input Current
1 μA
EN Input Low Voltage
0.4 V
EN Input High Voltage
1.5 V
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Powering Minds of the Smart


Features ETA3496 1.2A, 1.2MHz Synchronous Buck Co nverter with 7.2V OVP DESCRIPTION The ETA3496 is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to 1.2A of output curr ent. The devices operate from an input voltage range of 2.5V to 7.2V and provi de output voltages from 0.9V to 5V, mak ing the ETA3496 ideal for low voltage p ower conversions. Running at a fixed fr equency of 1.2MHz allows the use of sma ll inductance value and low DCR inducto rs, thereby achieving higher efficienci es. Other external components, such as ceramic input and output caps, can also be small due to higher switching frequ ency, while maintaining exceptional low noise output voltages. Built-in EMI re duction circuitry makes this converter ideal power supply for RF applications. Internal soft-start control circuitry reduces inrush current. Short-circuit a nd thermal-overload protection improves design reliability. ETA3496 is housed in a tiny SOT23-5L package FEATURES  Wide Input Voltage Range.
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