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UC3750L-XX-AF5-R Datasheet(PDF) 3 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) 3 Page - Unisonic Technologies

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UC3750
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
3 of 8
www.unisonic.com.tw
QW-R502-360.b
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Device Power Supply
VIN
-0.3 ~ 6.0
V
Input Voltage (CE)
VCE
-0.3 ~ 6.0
V
Output Voltage (VOUT)
VOUT
-0.3 ~ 6.0
V
Output Voltage (EXT)
VEXT
-0.3 ~ 6.0
V
Junction Temperature
TJ
+150
°C
Operating Temperature
TOPR
−40~+85
°C
Storage Temperature
TSTG
−55~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
UNIT
Junction to Ambient
θJA
250
°C/W
ELECTRICAL CHARACTERISTICS
(TA = 25°C (TYP. value), TA =-40°C ~ 85°C (MIN. and MAX. values), unless otherwise specified)
UC3750-27(2.7V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
TOTAL DEVICE
Input Voltage
VIN
2.45
5.50
V
Output Voltage
VOUT
ILOAD = 0mA, TA = 25°C
2.646
2.7
2.754
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 PIN)
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 PIN)
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



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