ETA9338 Tiny PMU Datasheet

ETA9338 Datasheet, PDF, Equivalent


Part Number

ETA9338

Description

Tiny PMU

Manufacture

ETA

Total Page 3 Pages
Datasheet
Download ETA9338 Datasheet


ETA9338
ETA9338
Tiny PMU with 3 channels of 1.5A Synchronous Bucks
DESCRIPTION
The ETA9338 is a Power Management Unit (PMU) with 3
channels of high-efficiency, DC-to-DC step-down switching
regulator, capable of delivering up to 1.5A of output current.
The devices operate from an input voltage range of 2.6V to
5.5V and provide output voltages from 0.6V to VIN, making
the ETA9338 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.
ETA9338 is housed in a tiny DFN3x3-12L package
FEATURES
Up to 96% Efficiency
Up to 1A Max Output Current
1.5MHz Frequency
Light Load operation
Internal Compensation
Tiny DFN3x3-12L Package
APPLICATIONS
IP CAM, Security CAM
MIDs, Tablet PC
Set Top Boxes
USB ports/Hubs
Other Battery Powered Devices
ORDERING INFORMATION
PART #
PACKAGE PIN
ETA9338D3M DFN3X3-12
TOP MARK
ETA9338
YWW2L
TYPICAL APPLICATION
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ETA9338
ETA9338
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
(Note: Exceeding these limits may damage the device. Exposure to absolute maximum
rating conditions for long periods may affect device reliability.)
INs, SWs, FBs, ENs Voltage ...................................0.3V to 6.5V
SWs to ground current ………………….…….…..Internally limited
Maximum Power Dissipation…………………..……………….1200mW
Operating Temperature Range ……................…–40°C to 85°C
Storage Temperature Range ………………………….–55°C to 150°
Thermal Resistance
θJC θ JA
QFN3X3-12………………………….……………3…………..….48 ...... °C/W
Lead Temperature (Soldering, 10ssec) …………………….260°C
ESD HBM (Human Body Mode) …………….……………..………….2KV
ESD MM (Machine Mode) …………………..………………..……….200V
ELECTRICAL CHACRACTERISTICS for each single channel
(VIN = 3.6V, unless otherwise specified. Typical values are at TA = 25oC.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
2.6 5.5 V
Input UVLO
Rising, Hysteresis=90mV
2.31 2.45
V
Input Supply Current
VFB =0.65V
40 70 μA
Input Shutdown Current
1 μA
FB Feedback Voltage
VIN =2.5 to 5V
0.588 0.6 0.612
V
FB Input Current
0.01 μA
Output Voltage Range
0.6 VIN V
Load Regulation
VOUT =1.8V, IOUT From 0.2A to 0.4A
0.1
%
Line Regulation
VIN =2.7 to 5.5V
0.2 %/V
Switching Frequency
1.5 MHz
NMOS Switch On Resistance
ISW =200mA
200 m
PMOS Switch On Resistance
ISW =200mA
280 m
PMOS Switch Current Limit
1.5 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
PIN DESCRIPTION
PIN #
1
2
NAME
EN3
FB3
DESCRIPTION
Enable pin for the channel 3. Drive this pin to high to enable the part, low to disable.
Feedback Input of Channel 3. Connect an external resistor divider from the Vout3 to FB3 and GND to set
the output to a voltage between 0.6V and VIN3
www.ETAsolution.com
Powering Minds of the Smarts
Proprietary Information DO NOT Distribute
2


Features ETA9338 Tiny PMU with 3 channels of 1.5 A Synchronous Bucks DESCRIPTION The ET A9338 is a Power Management Unit (PMU) with 3 channels of high-efficiency, DC- to-DC step-down switching regulator, ca pable of delivering up to 1.5A of outpu t current. The devices operate from an input voltage range of 2.6V to 5.5V and provide output voltages from 0.6V to V IN, making the ETA9338 ideal for low vo ltage power conversions. Running at a f ixed frequency of 1.5MHz allows the use of small inductance value and low DCR inductors, thereby achieving higher eff iciencies. Other external components, s uch as ceramic input and output caps, c an also be small due to higher switchin g frequency, while maintaining exceptio nal low noise output voltages. Built-in EMI reduction circuitry makes this con verter ideal power supply for RF applic ations. Internal soft-start control cir cuitry reduces inrush current. Short-ci rcuit and thermal-overload protection i mproves design reliability. ETA9338 is housed in a tiny DFN3x3-.
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