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UC3550G-XX-AF5-R 数据表(PDF) 3 Page - Unisonic Technologies

部件名 UC3550G-XX-AF5-R
功能描述  PWM CONTROLLED, PWM/PFM SWITCHABLE STEP-UP DC-DC CONTROLLER
PDF  11 Pages
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

UC3550G-XX-AF5-R 数据表(HTML) 3 Page - Unisonic Technologies

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UC3550
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
3 of 11
www.unisonic.com.tw
QW-R502-082,D
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VOUT
-0.3~8
V
EXT Voltage
VEXT
-0.3 ~ 8
V
EXT Sink/Source Current
IEXT
-150 ~ +150
mA
CE Input Voltage Range
VCE
-0.3 ~ 12.0
V
CE Input Current Range
ICE
-155 ~ 155
mA
Power Dissipation (Ta=25°C)
PD
500
mW
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, fOSC＝300kHz, unless otherwise specified)
UC3550-3.3V
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OSCILLATOR
Frequency
fOSC
VOUT=VSET×0.96
240
300
360
kHz
Frequency Temperature Coefficient
f
△
TA=-40°C ~ 85°C
0.10
%/°C
Maximum PWM Duty Cycle
DMAX
VOUT=VSET×0.96
70
80
90
%
Minimum Start-up Voltage
VSTART1
IOUT=0mA
800
900
mV
Minimum Start-up Voltage
VSTART2
IOUT=1mA
900
1000
mV
Minimum Start-up Voltage
Temperature Coefficient
V
△ START TA=-40°C ~ 85°C
-1.6
mV/°C
Minimum Operation Hold Voltage
VOPR
IOUT=0mA
600
700
mV
Soft-Start Time
tSS
VOUT=VSET
60
250
ms
CE (PIN 1)
CE Input Voltage :
High State, Device Enabled
VCEH
VOUT=VSET×0.96
900
mV
Low State, Device Disabled
VCEL
680
mV
CE Input Current :
High State, Device Enabled
ICEH
VOUT=VCE=5.0V
-0.5
0
0.5
μA
Low State, Device Disabled
ICEL
VOUT=5.0V, VCE=0V
0
0.15
0.5
μA
EXT (PIN 5)
ON Resistance
EXT “H”
REXTH
VEXT=VOUT-0.4V
11
15
Ω
EXT “L”
REXTL
VEXT=0.4V
8
12
Ω
TOTAL DEVICE
Output Voltage
VOUT
3.218
3.3
3.383
V
Output Voltage
temperature coefficient
V
△ OUT
TA=-40 ~ 85°C
150
ppm/°C
Operating Current
IDD
VOUT=VCE=VSET×0.96
103
160
μA
Stand-by Current
ISTN-BY
VOUT=VCE=VSET+0.5V
15
38
μA
Off-State Current
IOFF
VOUT=5.0V, VCE=0V,
TA=-40 ~ +85°C
0.6
1.5
μA
Efficiency
η
IOUT = 200mA, VIN = 2.0V
80
88
%



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