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USR1021L-S08-R bảng dữ liệu(PDF) 3 Page - Unisonic Technologies

tên linh kiện USR1021L-S08-R
Giải thích chi tiết về linh kiện  3A SYNCHRONOUS BUCK REGULATOR
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nhà sản xuất  UTC [Unisonic Technologies]
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USR1021L-S08-R bảng dữ liệu(HTML) 3 Page - Unisonic Technologies

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USR1021
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
3 of 4
www.unisonic.com.tw
QW-R103-073.a
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VIN
18
V
LX to AGND
-0.7~VIN+0.3
V
EN to AGND
-0.3~VIN+0.3
V
FB to AGND
-0.3~6.0
V
COMP to AGND
-0.3~6.0
V
PGND to AGND
-0.3~+0.3
V
Junction Temperature
TJ
+150
°C
Storage Temperature
TSTG
-65~+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 (Note 2)
θJA
87
°С/W
RECOMMENDED OPERATING CONDIIONS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VIN
6~18
V
Output Voltage Range
0.8~VIN
V
Ambient Temperature
TA
-40~+85
°C
ELECTRICAL CHARACTERISTICS
(TA=25°C, VIN=VEN=12V, VOUT=3.3V, unless otherwise specified) (Note 3)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
Supply Voltage
VIN
6
18
V
Supply Current (Quiescent)
IIN
IOUT=0, VFB=1.2V, VEN>2V
3.5
5
mA
Shutdown Supply Current
IOFF
VEN=0V
1
10
µA
Feedback Voltage
VFB
TA=25 °C
0.788
0.8
0.812
V
Load Regulation
0.5
%
Line Regulation
1
%
Feedback Voltage Input Current
IFB
200
nA
EN Input Threshold
VEN
Off Threshold
0.6
V
On Threshold
2
V
SS Time
CSS=16nF
2
ms
MODULATOR
Frequency
fO
400
500
600
kHz
Maximum Duty Cycle
DMAX
85
%
Controllable Minimum On Time
TMIN
150
ns
Current Sense Transconductance
7
A/V
Error Amplifier Transconductance
180
µA/V
PROTECTION
Current Limit
ILIMT
3.5
4.5
A
Over-Temperature Shutdown Limit
TJ Rising
150
°C
TJ Falling
100
°C
Notes: 1. Devices are inherently ESD sensitive, handling precautions are required. Human body model rating: 1.5
kΩ in series with 100pF.
2. The value of θJA is measured with the device mounted on a 1-in
2 FR-4 board with 2oz. Copper, in a still air
environment with TA=25°C. The value in any given application depends on the user’s specific board
design.
3. Specification in BOLD indicate an ambient temperature range of -40°C~+85°C. These specifications are
guaranteed by design.



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