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UC3750L-XX-AF5-R Datasheet(PDF) 4 Page - Unisonic Technologies

Part # UC3750L-XX-AF5-R
Description  600kHZ PWM/PFM STEP-DOWN DC-DC CONTROLLER
PDF  8 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3750L-XX-AF5-R Datasheet(HTML) 4 Page - Unisonic Technologies

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UC3750
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 8
www.unisonic.com.tw
QW-R502-360.b
ELECTRICAL CHARACTERISTICS
UC3750-33(3.3V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
TOTAL DEVICE
Input Voltage
VIN
2.45 5.0V 5.50
V
Output Voltage
VOUT
ILOAD = 0mA, TA = 25°C
3.234
3.3
3.366
V
Input Current into VOUT Pin
II(VOUT)
2.5
4.0
μA
Operating Current
IDD
VIN =5.0V, VCE =5.0 V
(No External Components)
50
80
μA
Off-State Current
IOFF
VIN = 5.0V, VCE = 0V, TA = 25°C
0.3
0.5
μA
OSCILLATOR
Frequency
FOSC
510
600
690
kHz
Maximum Duty Cycle
DMAX
100
%
Switchover ON Time Threshold (Note)
TON
167
320
500
nS
Soft-Start Delay Time (Note)
TSS
8.0
mS
Protection Delay Time
TPORT
Auto Restart
8.0
mS
OUTPUT DRIVE (EXT)
EXT “H” Output Current
IEXTH
VEXT =VIN -0.4V
-60
mA
EXT “L” Output Current
IEXTL
VEXT = 0.4 V
100
mA
EXT “L-H” Rise Time
TR
CLOAD = 1000pF,VIN = 5.0V
65
nS
EXT “H-L” Fall Time
TF
CLOAD = 1000pF, VIN = 5.0V
40
nS
EXT “L-H” Rise Time
TR
CLOAD = 5.0nF, VIN = 5.0V
140
nS
EXT “H-L” Fall Time
TF
CCLOAD = 5.0nF, VIN = 5.0V
90
nS
CE (CE)
CE “H” Input Voltage
VCEH
1.3
V
CE “L” Input Voltage
VCEL
0.3
V
CE “H” Input Current
ICEH
VIN =VCE =5.0V
-0.5
0
0.5
μA
CE “L” Input Current
ICEL
VIN =5.0V, VCE =0V
-0.5
0.15
0.5
μA
Under-Voltage Lockout
Under-Voltage Lockout Threshold
VUVLO
1.60
2.20
2.40
V
Under-Voltage Lockout Hysteresis
VUVLO(HYS)
50
mV
Notes: 1. PWM/PFM Switchover ON Time Threshold min/max guaranteed by design only.



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