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TS3552 Arkusz danych(PDF) 2 Page - Taiwan Semiconductor Company, Ltd

Numer części TS3552
Szczegółowy opis  2A/350kHz Synchronous Buck DC/DC Converter
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Producent  TSC [Taiwan Semiconductor Company, Ltd]
Strona internetowa  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS3552 Arkusz danych(HTML) 2 Page - Taiwan Semiconductor Company, Ltd

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TS3552
2A/350kHz Synchronous Buck DC/DC Converter
2/11
Version: B11
Absolute Maximum Rating
Characteristics
Symbol
Rating
Unit
Maximum Supply Voltage
VIN
-0.3 ~ +24
V
Switching Pin Input Voltage
VSW
-1 ~ (VIN +0.3)
V
Boost Voltage
VBS
(VSW -0.3) ~ (VSW +6)
V
All Other Pins
-0.3 to +6
V
Output Voltage
VOUT
0.925 ~ 20
V
Power Dissipation
PD
Internal Limited
W
Operating Temperature Range
TOPR
-40 to +85
ºC
Storage Temperature Range
TST
-65 to +150
ºC
Operating Junction Temperature Range
TJ
+150
ºC
Thermal Resistance Junction to case
θJC
40
ºC/W
Thermal Resistance Junction to ambient
θJA
120
ºC/W
Note: Stresses exceed those rating may damage the device
Note: θJA is measured with the PCB copper area of approximately 1 in
2 (multi-layer)
Electrical Specifications (TA=25
oC, V
IN=12V unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Operating Voltage
VIN
4.75
--
23
V
Shutdown Supply Current
ISD
VEN =0V
--
1
3
µA
Feedback Voltage
VFB
4.75V ≤ VIN ≤ 23V
0.9
0.925
0.95
V
Load Regulation
REGLOAD
-2
--
+2
%
High-Side MOSFET On-Resistance
RDSON
--
130
--
m
Low-Side MOSFET On-Resistance
RDSON
--
130
--
m
High-Side MOSFET Leakage Current
IL(HIGH-SIDE)
VEN = 0V, VSW = 0V
--
--
10
µA
High-Side MOSFET Current Limit
ILIMIT
Minimum Duty
2.4
3.4
--
A
Oscillator Frequency
FOSC
280
350
430
KHz
Short Circuit Oscillator Frequency
FSC
VFB =0V
--
90
--
KHz
Maximum Duty Cycle
DC
VFB =0.8V
--
90
--
%
Soft-Start Current
ISS
VSS=0V
--
6
--
µA
Soft-Start Period
CSS=0.1µF
--
15
--
mS
EN Shutdown Threshold Voltage
VENSD
VEN Rising
1.1
1.5
2.0
V
Thermal Shutdown
OTP
--
160
--
°C
Thermal Shutdown Hysteresis
OTPHYSTERSIS
--
35
--
°C
Note 1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operat ing
temperature range are assured by design, characterization and correlation with Statistical Quality Controls
(SQC).
Note 2: It is recommended to use duty ratio above 10% for minimizing resultant duty cycle jitter.
Note 3: It is recommended to connect a soft start capacitor to soft start pin. Leave the soft start pin open may
cause large inrush current and output overshooting


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