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PDF UC3500 Data sheet ( Hoja de datos )
| Número de pieza | UC3500 | |
| Descripción | HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UC3500 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
UC3500
CMOS IC
HIGH EFFICIENCY VFM
CONTROLLED STEP-UP
DC/DC CONVERTER
APPLICATIONS
* Cellular telephones
* PDA and hand held instruments
* Palmtop and notebook computer
* Portable equipment
* Battery powered equipment
DESCRIPTION
The UTC UC3500 Step-up DC/DC converters are optimized for
applications that prioritize high efficiency and high frequency. The
efficiency is greatly improved by utilizing an internal VFM controlled
scheme that switches with fixed frequency and is adjustable up to
more than 300 KHz depending on the load.
The UTC UC3500 requires only three external components to
realize the conversion from the battery voltage to the selected
output voltage in the range of 2.5V ~ 5.5V.
www.DataSheet4U.com
The start-up voltage of UTC UC3500 is guaranteed at 0.8V and
the device is operating down to 0.5V. The Output current is
guaranteed up to 150mA, while quiescent current is only 18µA.
3 21
5
4
SOT-25
1
SOT-89
*Pb-free plating product number: UC3500L
FEATURES
* 0.8V start-up voltage
* 0.5V hold-on voltage
* Output current up to 150mA
* Low supply current of 18µA
* Wide output voltage range of 2.5V~5.5V
* Output voltage accuracy ±2%
* High efficiency up to 88%
* Low profile and minimum external components
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
UC3500-xx-AB3-R
UC3500L-xx-AB3-R
UC3500-xx-AF5-R
UC3500L-xx-AF5-R
Package
SOT-89
SOT-25
Packing
Tape Reel
Tape Reel
UC3550L-xx-AB3-R
(1)Packing Type
(2)Package Type
(3)Voltage Code
(4)Lead Plating
(1) R: Tape Reel
(2) AB3: SOT-89, AF5: SOT-25
(3) xx: reference to Marking Information
(4) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 9
QW-R502-072,A
1 page  
UC3500
ELECTRICAL CHARACTERISTICS(Cont.)
UC3500-3.0V (VIN = 1.8V)
PARAMETER
Output Voltage
Start-up Voltage (VIN-VF)
Hold-on Voltage
Supply Current
Internal Switch RDS(ON)
Internal Leakage Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
Efficiency
SYMBOL
VOUT
VSTART
VHOLD
ISUPPLY
RLX
ILX(LEAK)
fOSC
Dty
TEST CONDITIONS
IOUT = 10mA
IOUT = 0
IOUT = 1mA
IOUT = 0
IOUT = 1mA
IOUT = 0
ILX = 100mA
VLX = 4V, VOUT = 3.3V
IOUT = 10mA
IOUT = 10mA
IOUT = 10mA
IOUT = 50mA
IOUT = 100mA
UC3500-3.3V (VIN = 2.0V)
PARAMETER
Output Voltage
Start-up Voltage (VIN-VF)
Hold-on Voltage
Supply Current
Internal Switch RDS(ON)
Internal Leakage Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
Efficiency
SYMBOL
VOUT
VSTART
VHOLD
ISUPPLY
RLX
ILX(LEAK)
fOSC
Dty
TEST CONDITIONS
IOUT = 10mA
IOUT = 0
IOUT = 1mA
IOUT = 0
IOUT = 1mA
IOUT = 0
ILX = 100mA
VLX = 4V, VOUT = 3.6V
IOUT = 10mA
IOUT = 10mA
IOUT = 10mA
IOUT = 50mA
IOUT = 100mA
UC3500-5.0V (VIN = 3.0V)
PARAMETER
Output Voltage
Start-up Voltage (VIN-VF)
Hold-on Voltage
Supply Current
Internal Switch RDS(ON)
Internal Leakage Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
Efficiency
SYMBOL
VOUT
VSTART
VHOLD
ISUPPLY
RLX
ILX(LEAK)
fOSC
Dty
TEST CONDITIONS
IOUT = 10mA
IOUT = 0
IOUT = 1mA
IOUT = 0
IOUT = 1mA
IOUT = 0
ILX = 100mA
VLX = 4V, VOUT = 5.3V
IOUT = 10mA
IOUT = 10mA
IOUT = 10mA
IOUT = 50mA
IOUT = 100mA
CMOS IC
MIN TYP MAX UNIT
2.9 3 3.1 V
0.7 1.1
V
0.8 1.2
V
0.4 0.6
V
0.3 0.5
V
18 µA
750 mΩ
0.1 0.3 µA
240 300 360 KHz
75 %
82 %
84 %
82 %
MIN TYP MAX UNIT
3.2 3.3 3.4
V
0.7 1.1
V
0.8 1.2
V
0.4 0.6
V
0.3 0.5
V
18 µA
750 mΩ
0.1 0.3 µA
240 300 360 KHz
75 %
83 %
85 %
84 %
MIN TYP MAX UNIT
4.85 5.0 5.15
V
0.7 1.1
V
0.8 1.2
V
0.4 0.6
V
0.3 0.5
V
19 µA
730 mΩ
0.1 0.3 µA
240 300 360 KHz
75 %
86 %
88 %
85 %
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R502-072,A
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet UC3500.PDF ] | |
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