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PDF UC3383 Data sheet ( Hoja de datos )
| Número de pieza | UC3383 | |
| Descripción | STEP-UP DC/DC CONVERTERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UC3383 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
UC3383
PFM CONTROLLED, STEP-UP
DC/DC CONVERTERS
(VARIABLE DUTY RATIO)
DESCRIPTION
The UTC UC3383 Series are PFM step-up DC/DC switching converter.
The UTC UC3383 can support both large and small currents. It
automatically switches duty ratio (45%/75%) when it senses changes in
load.
Both built-in and external transistor types include 5-pin and 3-pin
packages, which are provided with either a CE (chip enable) function that
reduces power consumption during shut-down mode, or a VDD pin
function (separated power and voltage detect pins).
FEATURES
* Output Voltage Range: 2.0V~7.0V in 0.1V Increments
* Operating (Start-up) Voltage Range: 0.9V~10V
* Highly Accurate: Set-up Voltage ±2.5%
* Maximum Oscillator Frequency (Max Fosc1): 180kHz (±15%)
* Variable Duty Ratio: 45%/75% (±5%)
* Both Switching Transistor Built-in and External Types are Available
* 5-Lead Package Offer Chip Enable or Independent VOUT Pin Option.
CMOS IC
4
5
123
SOT-25
1 SOT-89
RDERING INFORMATION
Ordering Number
Package
Note:
UC3383G-xx-AB3-R
SOT-89
UC3383G-xx-AF5-R
SOT-25
Pin Assignment: NC: No Connection CE: Chip Enable
xx: Output Voltage, refer to Marking Information.
Pin Assignment
1234
VSS VOUT Lx
-
CE VOUT NC VSS
5
-
Lx
Packing
Tape Reel
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd.
1 of 14
QW-R502-032.K
1 page  
UC3383
CMOS IC
ELECTRICAL CHARACTRISTICS(Cont.)
UTC UC3383-2.7V (IOUT=10mA)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
VOUT L, SD, CL etc. connected
Maximum Input Voltage
Oscillation Start-up Voltage
VIN
VST IOUT=1mA
Oscillation Hold Voltage
Lx Limit Voltage
VHLD IOUT=1mA
VLxLMT Same as IDD1. FOSC>Fosc1×2
No-Load Input Current
Supply Current 1(Note 2)
IIN IOUT=0mA (Note 1)
IDD1 VIN=VOUT×0.95
Supply Current 2
Lx Leakage Current
IDD2 VIN=VOUT+0.5V
ILXL No external components, VOUT=VLx=10V.
Lx Switch-On Resistance
Duty Ratio 1
RSWON Same as IDD1. VLx=0.4V
DTY1 Same as IDD1.Measuring of Lx waveform
Duty Ratio 2
Efficiency
DTY2 IOUT=1mA. Measuring of Lx on-time
EFFI L, SD, CL etc. connected
Maximum Oscillation Frequency
Fosc1 Same as IDD1. 75% duty
Fosc2 Same as IDD1. 45% duty
FOR 5-PINS PACKAGE ONLY
CE Voltage
High
Low
VCEH
VCEL
Same as IDD1.
Existence of Lx Oscillation.
Same as IDD1.
Disappearance of Lx Oscillation
CE ”High” Current
Stand-by Current
High
Low
ICEH Same as IDD1. VCE=VOUT×0.95
ICEL Same as IDD1. VCE=0V
ISTB Same as IDD1.
MIN TYP
2.633 2.700
0.80
0.70
0.7
4.51
17.87
2.04
6.37
70 75
40 45
70
100 120
150 180
0.75
MAX
2.768
10
0.90
1.1
9.09
35.77
4.11
1.0
9.64
80
50
130
210
0.20
0.25
-0.25
0.5
UNIT
V
V
V
V
V
μA
μA
μA
μA
Ω
%
%
%
kHz
kHz
V
V
μA
μA
μA
UTC UC3383-2.8V (IOUT=10mA)
PARAMETER
SYMBOL
TEST CONDITIONS
Output Voltage
VOUT L, SD, CL etc. connected
Maximum Input Voltage
Oscillation Start-up Voltage
VIN
VST IOUT=1mA
Oscillation Hold Voltage
Lx Limit Voltage
VHLD IOUT=1mA
VLxLMT Same as IDD1. FOSC>Fosc1×2
No-Load Input Current
Supply Current 1(Note 2)
IIN IOUT=0mA (Note 1)
IDD1 VIN=VOUT×0.95
Supply Current 2
Lx Leakage Current
IDD2 VIN=VOUT+0.5V
ILXL No external components, VOUT=VLx=10V.
Lx Switch-On Resistance
Duty Ratio 1
RSWON Same as IDD1. VLx=0.4V
DTY1 Same as IDD1,.Measuring of Lx waveform
Duty Ratio 2
Efficiency
DTY2 IOUT=1mA. Measuring of Lx on-time
EFFI L, SD, CL etc. connected
Maximum Oscillation Frequency
Fosc1 Same as IDD1. 75% duty
Fosc2 Same as IDD1. 45% duty
FOR 5-PINS PACKAGE ONLY
CE Voltage
High
Low
VCEH
VCEL
Same as IDD1.
Existence of Lx Oscillation.
Same as IDD1.
Disappearance of Lx Oscillation
CE ”High” Current
Stand-by Current
High
Low
ICEH Same as IDD1. VCE=VOUT×0.95
ICEL Same as IDD1. VCE=0V
ISTB Same as IDD1.
MIN
2.730
0.70
0.7
70
40
100
150
0.75
TYP
2.800
0.80
4.54
18.48
2.06
5.98
75
45
70
120
180
MAX
2.870
10
0.90
1.1
9.16
36.98
4.14
1.0
9.06
80
50
130
210
0.20
0.25
-0.25
0.5
UNIT
V
V
V
V
V
μA
μA
μA
μA
Ω
%
%
%
kHz
kHz
V
V
μA
μA
μA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 14
QW-R502-032.K
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UC3383
TYPICAL APPLICATION CIRCUITS
CMOS IC
UTC UC3383
VOUT
12 3
SD
+ CL
GND
L
VIN
L : 100 µ H
SD: MA735 (Schottky diode; MATSUSHITA)
CL:16V 47µF
Fig.1 3-Lead Package Application(SOT-89)
L
VIN
54
UTC UC3383
123
SD
CE
CL +
GND
VOUT
L : 100 µ H
SD:MA735 (Schottky diode; MATSUSHITA)
CL :16V47µF
Fig.2 5-Lead Package Application(SOT-25)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 14
QW-R502-032.K
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet UC3383.PDF ] | |
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