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PDF EUP3010 Data sheet ( Hoja de datos )
| Número de pieza | EUP3010 | |
| Descripción | 1A Synchronous Step-Down Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUP3010/A
1.5MHz,1A Synchronous
Step-Down Converter with Soft Start
DESCRIPTION
The EUP3010/A 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 EUP3010/A 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 EUP3010/A supports up
to 1A 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 inductors and
capacitors. The internal synchronous switch increases
efficiency while eliminates the need for an external
Schottky diode. The EUP3010/A is available in an
adjustable output or fixed output 1.2V ,1.8V and 3.3V.
Typical Application Circuit
FEATURES
z High Efficiency up to 96%
z 1.5MHz Constant Switching Frequency
z 1A Available Load Current
z 270µA Typical Quiescent Current
z 2.5V to 5.5V Input Voltage Range
z Adjustable Output Voltage as Low as 0.6V
z 100% Duty Cycle Low Dropout Operation
z No Schottky Diode Required
z Short Circuit and Thermal Protection
z Excellent Line and Load Transient Response
z 1µA Shutdown Current
z Soft Start Function
z Over Voltage Protection
z Available in 1.2V,1.8V,3.3V Fixed Output or
Adjustable Output Versions
z Available in 2mm× 2mm TDFN-6 and 3mm×
3mm TQFN-16L Package
z RoHS Compliant and 100% Lead(Pb)-Free
APPLICATIONS
z Cellular and Smart Phones
z Portable Media Players/ MP3 Players
z Digital Still and Video Cameras
z Portable Instruments
z WLAN PC Cards
DS3010/A Ver1.4 Feb. 2009
Figure 1. Adjustable Output Regulators
1
1 page  
Absolute Maximum Ratings (1)
EUP3010/A
Input Supply Voltage VIN ------------------------------------------------------- -0.3V to 6V
EN, VFB Voltages ------------------------------------------------------ -0.3V to VIN +0.3V
P-Channel Switch Source Current (DC) ----------------------------------------------- 1.2A
N-Channel Switch Sink Current (DC) ------------------------------------------------- 1.2A
Peak SW Sink and Source Current -------------------------------------------------- 1.8A
Junction Temperature ------------------------------------------------------------------- 125°C
Storage Temperature ------------------------------------------------------ -65°C to +150°C
Lead Temp (Soldering, 10sec) ------------------------------------------------------- 260°C
Recommend Operating Conditions (2)
Supply Voltage (VIN) ------------------------------------------------------------- 2.5V to 5.5V
Operating Temperature Range ----------------------------------------------- -40°C to +85°C
Note (1): Stress beyond those listed under “Absolute Maximum Ratings” may damage the device.
Note (2): The device is not guaranteed to function outside the recommended operating conditions.
Electrical Characteristics
Unless otherwise specified, TA=+25°C, VIN=3.6V.
Symbol
Parameter
VIN Input Voltage Range
IFB Feedback Current
Conditions
EUP3010/A
Min Typ Max.
2.5 5.5
±30
Unit
V
nA
IQ
ISHDN
IPK
VFB
Quiescent Current
Shutdown Current
Peak Inductor Current
Regulated Feedback Voltage
VOUT Regulated Output Voltage
∆VOUT
Output Voltage Line
Regulation
∆VFB
Reference Voltage Line
Regulation
VLOADREG
Output Voltage Load
Regulation
fOSC Oscillator Frequency
RPFET
RNFET
ILSW
VEN
IEN
RDS(ON) of P-Channel FET
RDS(ON) of N-Channel FET
SW Leakage Current
EN Threshold
EN Leakage Current
VFB=0.5V or VOUT=90%, SW Open
VEN=0V, VIN= 4.2V
VIN=3V, VFB=0.5V or VOUT=90%
(Note 3) ADJ Version
IOUT=200mA
Fix Version VOUT=1.2V, 1.8V, 3.3V
VIN=2.5V to 5.5V, ILOAD=0
VIN=2.5V to 5.5V
ILOAD= 0mA to 1A
VFB=0.6V or VOUT=100%
VFB=0V or VOUT=0V
ISW=200mA
ISW=-200mA
VEN=0V, VSW=0V or 5V, VIN=5V
270 370 µA
1 µA
1.2 1.5
A
0.588 0.6 0.612 V
-3 3 %
0.25 0.4 %/V
0.25 0.4 %/V
0.5 %
1.2 1.5 1.8 MHz
700 kHz
0.28 0.4
Ω
0.30 0.4
Ω
±1 µA
0.3 1.0 1.5 V
1 µA
Note (3): The EUP3010/A is tested in a proprietary test mode that connects FB to the output of the error amplifier.
DS3010/A Ver1.4 Feb. 2009
5
5 Page 
Packaging Information
TDFN-6
EUP3010/A
DETAIL A
SYMBOLS
A
A1
b
D
D1
E
E1
e
L
MILLIMETERS
MIN.
MAX.
0.70 0.80
0.00 0.05
0.20 0.40
1.90 2.10
1.40
1.90 2.10
0.80
0.65
0.25 0.45
INCHES
MIN.
MAX.
0.028
0.031
0.000
0.002
0.008
0.016
0.075
0.083
0.055
0.075
0.083
0.031
0.026
0.010
0.018
DS3010/A Ver1.4 Feb. 2009
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet EUP3010.PDF ] | |
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