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P3576 数据表(PDF) 4 Page - Unisonic Technologies

部件名 P3576
功能描述  2A PWM BUCK DC/DC CONVERTER
PDF  6 Pages
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

P3576 数据表(HTML) 4 Page - Unisonic Technologies

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P3576
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
4 of 6
www.unisonic.com.tw
QW-R103-054.G
ABSOLU T E M AX I M U M RAT I N G (TA=25°C, unless otherwise specified )
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
+45
V
ON/OFF Pin Input Voltage
VEN
-0.3 ~ 40
V
Feedback Pin Voltage
VFB
-0.3 ~ 12
V
Output Voltage to Ground
VOUT
-0.8
V
Operating Supply Voltage
VOP
+4.5 ~ +40
V
Power Dissipation
PD
Internally Limited
W
Junction Temperature
TJ
+125
°C
Operating Temperature
TOPR
-40 ~ +125
°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.
T H ERM AL DAT A
PARAMETER
SYMBOL
RATINGS
UNIT
Junction to Ambient
JA
60
°
С/W
Junction to Case
JC
20
°
С/W
Note: JA is measured with the PCB copper area(need connect to SW pins) of approximately 1.5 in
2(Multi-layer).
ELECT RI CAL CH ARACT ERI ST I CS (TA=25°C, unless otherwise specified, VCC=12V for 3.3V, 5V,
adjustable version and VCC=18V for the 12V version. ILOAD=0.2A.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
Quiescent Current
IQ
VFB=12V force driver off
4
8
mA
Feedback Bias Current
ADJ
IFB
VFB=1.3V
-10
-50
nA
Shutdown Supply Current
ISD
EN pin=5V, VCC=40V
100
200
μA
Oscillator Frequency
fOSC
44
50
56
KHz
ADJ
VFB<0.5V
25
KHz
Oscillator Frequency of
Short Circuit Protect
Fixed
fSCP
VOUT <VOUT*40%
25
KHz
MAX
DC
VFB=0V force driver ON
100
%
Duty Cycle
MIN
DC
VFB=12V force driver OFF,VFB=18V for the
12V version.
0
%
Current Limit
ICL
Pear current, No outside circuit
VFB=0V force driver on
2.5
A
Load Regulation(
∆VOUT /VOUT)
∆VOUT IOUT=0.2 ~ 2A
0.6
1.2
%
Saturation Voltage
VSAT
IOUT=2A, No outside circuit
VFB=0V force driver on
1.2
1.4
V
SW pin=0V
No outside circuit VFB=12V force driver off,
VFB=18V for the 12V version.
-200
μA
SW pin Leakage
Current
SW pin=-0.8V
ISWL
VCC=40V force driver off
-5
mA
Low
VIL
regulator ON
1.3
0.6
V
EN pin Logic Input
Threshold Voltage
High
VIH
regulator OFF
2.0
1.3
V
EN pin Logic Input Current
IH
VEN=2.5V (OFF)
-0.1
-10
μA
EN pin Input Current
IL
VEN=0.5V (ON)
-0.01
-1
μA
Thermal shutdown Temp
TSD
135
°C
ADJ
ILOAD=0.2A, VOUT programmed for 3.3V
1.193 1.23 1.267
3.3V
ILOAD=0.2A
3.20
3.30
3.40
5.0V
ILOAD=0.2A
4.85
5.00
5.15
Output Feedback Voltage
12V
VFB
ILOAD=0.2A
11.64 12.0 12.36
V
ADJ
VCC=12V, ILOAD=2A
79
3.3V
VCC=12V, ILOAD=2A
80
5.0V
VCC=12V, ILOAD=2A
84
Efficiency
12V
VCC=18V, ILOAD=2A
90
%



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