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Elite Semiconductor

EML3417 Datasheet Preview

EML3417 Datasheet

Synchronous Step-Down Regulator

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ESMT/EMP
EML3417
1.3MHz 1.5A, Synchronous Step-Down Regulator
General Description
EML3417 is designed with high efficiency step down DC/DC
converter for portable devices applications. It features with
extreme low quiescent current with no load which is the
best fit for extending battery life during the standby mode.
The device operates from 2.5V to 5.5V input voltage and up
to 1.5A output current capability. High 1.3MHz internal
frequency makes small surface mount inductors and
capacitors possible and reduces overall PCB board space.
Further, build-in synchronous switch makes external
Schottky diode is no longer needed and efficiency is
improved. EML3417 is designed base on pulse width
modulation (PWM) for low output voltage ripple and fixed
frequency noise, low dropout mode provides 100% duty
cycle operation. Low reference voltage is designed for
achieving regulated output down to 0.6V.
The device is available in an adjustable version. The
EML3417 is available in DFN-6 package.
Typical Application (adjustable)
Features
„ Achieve 95% efficiency
„ Input Voltage : 2.5V to 5.5V
„ Output Current up to 1.5A
„ Reference voltage 0.6V
„ Quiescent Current 240μA with No Switching
„ Internal switching frequency 1.3MHz
„ No Schottky Diode needed
„ Low Dropout Operation: 100% Duty Cycle
„ Shutdown current < 1μA
„ Excellent Line and Load Transient Response
„ Over-current and Over-temperature Protection
Applications
„ Blue-Tooth devices
„ Cellular and Smart Phones
„ Personal multi-media Player (PMP)
„ Wireless networking
„ Digital Still Cameras
„ Portable applications
Fig. 1
Order, Mark & Packing Information
Package
Vout
Product ID
TDFN-6 adjustable EML3417-00FF06NRR
Fig. 2
Marking
Packing
5K units Tape & Reel
Elite Semiconductor Memory Technology Inc./Elite Micropower Inc.
Publication Date: Jan. 2011
Revision: 5.3
1/14




Elite Semiconductor

EML3417 Datasheet Preview

EML3417 Datasheet

Synchronous Step-Down Regulator

No Preview Available !

ESMT/EMP
Package configuration
EML3417
EML3417-00FF06NRR
00
FF06
NRR
Adjustable
TDFN-6 Package
RoHS & Halogen free
Rating: -40 to 85°C
Package in Tape & Reel
Pin Functions
Pin #
1
2
3
Pin Name
VFB
(Adjustable)
VOUT
(Fixed voltage)
VSS_PWR
SW
4 VIN_PWR
5 VIN_CLN
6
Exposed pad
EN
VSS_CLN
Function
Feedback Pin. Receives the feedback voltage from an external resistive divider
across the output.
Output Voltage Pin. An internal resistive divider divides the output voltage down for
comparison to the internal reference voltage.
Power Ground Pin.
Switch Pin. Must be connected to Inductor. This pin connects to the drains of the
internal main and synchronous power MOSFET switches.
Power Input Pin. Must be closely decoupled to GND pin with a 4.7μF or greater
ceramic capacitor.
Analog Input Pin. Must be closely decoupled to GND pin with a 4.7μF or greater
ceramic capacitor.
Enable Pin. Minimum 1.2V to enable the device. Maximum 0.4V to shut down the
device. Do not leave this pin floating and enable the chip after Vin is in the input
voltage range.
Analog Ground Pin.
Elite Semiconductor Memory Technology Inc./Elite Micropower Inc.
Publication Date: Jan. 2011
Revision: 5.3
2/14


Part Number EML3417
Description Synchronous Step-Down Regulator
Maker Elite Semiconductor
Total Page 14 Pages
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