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ST763A Datasheet(PDF) 4 Page - STMicroelectronics

Part # ST763A
Description  3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST763A Datasheet(HTML) 4 Page - STMicroelectronics

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ST763A SERIES
4/10
ELECTRICAL CHARACTERISTICS (VCC=5V, IO = 0mA, TA = TMIN to TMAX, unless otherwise specified.)
TYPICAL APPLICATION CIRCUIT
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VCC
Input Voltage
3.3
11
V
VO
Output Voltage
VCC = 4 to 11V
IO =0 to 300mA
VCC = 4.75 to 11V IO =0 to 500mA
3.135
3.135
3.3
3.3
3.465
3.465
V
V
∆V
O
Line Regulation
0.13
%/V
∆V
O
Load Regulatio
IO = 1 to 500mA
0.005
%/mA
η
Power Efficency
IO =300mA
IO =100mA
88
90
%
%
ISUPPLY Supply Current
ON Mode (Including Switch Current)
OFF Mode
0.6
0.2
2.5
100
mA
µA
VIH
SHDN Input High Threshold
2
V
VIL
SHDN Input Low Threshold
0.25
V
ISHDN
Shutdown Input Leakage
Current
1
µA
VLOCK Under Voltage Lockout
VCC Falling
2.7
3
V
RDS(on) LX On Resistance
ILX=500mA
1
Ω
ILEAK
LX Leakage Current
VCC = 12V
VLX = 0V
10
nA
VREF
Reference Voltage
TA = 25°C
1.18
1.25
1.32
V
∆V
REF
Temeperature Reference
Drift
TA = TMIN to TMAX
50
ppm/°C
fOSC
Switching Frequency
159
200
212.5
KHz
RC
Compensation Pin
Impedance
7500
Ω
CC
SS
REF
SHDN
Vcc
Lx
OUT
GND
+
470 pF
220 µF
1 µF
1500 pF
100 µF
22 µH
Vout
Vin
0.047 µF
STPS330U
+


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