EUP3406VIR1 Eutech Microelectronics Inc, EUP3406VIR1 Datasheet

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EUP3406VIR1

Manufacturer Part Number
EUP3406VIR1
Description
Manufacturer
Eutech Microelectronics Inc
Datasheet

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Part Number:
EUP3406VIR1
Manufacturer:
EUTECH
Quantity:
20 000
DESCRIPTION
The EUP3406 is a constant frequency, current mode,
PWM step-down converter. The device integrates a
main switch and a synchronous rectifier for high
efficiency. The 2.5V to 5.5V input voltage range makes
the EUP3406 ideal for powering portable equipment
that runs from a single cell Lithium-Ion (Li+) battery or
3-cell NiMH/ NiCd batteries. The output voltage can be
regulated as low as 0.6V. The EUP3406 supports up to
600mA load current and can also run at 100% duty
cycle for low dropout applications, extending battery
life in portable systems.
Switching frequency is internally set at 1.5MHz,
allowing the use of small surface mount inductor and
capacitors. The internal synchronous switch increases
efficiency while eliminate the need for an external
Schottky diode. The EUP3406 is available in a low
profile 5 lead SOT package.
Typical Application Circuit
DS3406 Ver1.2 Nov. 2007
1.5MHz, 600mA Synchronous
Figure1.
1
FEATURES
APPLICATIONS
Step-Down Converter
High Efficiency
1.5MHz Constant Switching Frequency
600mA Available Load Current
270µA Typical Quiescent Current
2.5V to 5.5V Input Voltage Range
Adjustable Output Voltage as Low as 0.6V
100% Duty Cycle Low Dropout Operation
No Schottky Diode Required
Short Circuit and Thermal Protection
Over Voltage Protection
<1µA Shutdown Current
Available in SOT23-5 Package
RoHS Compliant and 100% Lead(Pb)-Free
Cellular and Smart Phones
Portable Media Players/ MP3 Players
Digital Still and Video Cameras
Portable Instruments
WLAN PC Cards
EUP3406

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EUP3406VIR1 Summary of contents

Page 1

DESCRIPTION The EUP3406 is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.5V to 5.5V input voltage range makes the EUP3406 ideal for powering portable equipment ...

Page 2

Block Diagram Pin Configurations Package Type SOT23-5 Pin Description PIN Pin Chip Enable pin. Forcing this pin above 1.5V enables the part. Forcing this pin below EN 1 0.3V shuts down the device. Do not leave EN floating. GND 2 ...

Page 3

... Ordering Information Order Number Package Type EUP3406VIR1 SOT23-5 EUP3406 □ □ □ □ 1: Lead Free 0: Lead Packing R: Tape & Reel Operating temperature range I: Industry Standard Package Type V: SOT-23 DS3406 Ver1.2 Nov. 2007 Marking e A □ □ □ □ Lead Free Code ...

Page 4

Absolute Maximum Ratings Input Supply Voltage EN, VFB Voltages P-Channel Switch Source Current (DC) N-Channel Switch Sink Current (DC) ---------------------------------------------- 800mA Peak SW Sink and Source Current -------------------------------------------------- Operating Temperature Range ----------------------------------------------- -40°C to 85°C Junction Temperature ------------------------------------------------------------------- 125°C Storage ...

Page 5

Typical Operating Characteristics DS3406 Ver1.2 Nov. 2007 5 EUP3406 ...

Page 6

DS3406 Ver1.2 Nov. 2007 6 EUP3406 ...

Page 7

DS3406 Ver1.2 Nov. 2007 7 EUP3406 ...

Page 8

DS3406 Ver1.2 Nov. 2007 8 EUP3406 ...

Page 9

Application Information Main Control Loop The EUP3406 uses a slop-compensated constant frequency, current mode PWM architecture. Both the main (P-Channel MOSFET) (N-channel MOSFET) switches are internal. During normal operation, the EUP3406 regulates output voltage by switching at a constant frequency ...

Page 10

Thermal Considerations To avoid the EUP3406 from exceeding the maximum junction temperature, the user will need thermal analysis. The goal of the thermal analysis is to determine whether the operating conditions exceed the maximum junction temperature of ...

Page 11

Packaging Information SYMBOLS MIN DS3406 Ver1.2 Nov. 2007 SOT23-5 MILLIMETERS MAX. - 1.30 0.00 0.15 2.90 1.60 2.60 3.00 0.30 0.60 0.30 0.50 0.95 11 EUP3406 INCHES MIN. MAX. - 0.052 0.000 ...

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