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ST750A Datasheet(PDF) 4 Page - STMicroelectronics

Part No. ST750A
Description  ADJUSTABLE STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST750A Datasheet(HTML) 4 Page - STMicroelectronics

   
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ST750A
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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
4
11
V
VO
Output Voltage
VCC =6 to 11V
IO =0 to 450mA
4.75
5
5.25
V
∆V
O
Line Regulation
VCC = 4 to 11V
0.15
%/V
∆V
O
Load Regulatio
IO = 0 to 450mA
0.005
%/mA
η
Power Efficency
IO =300mA
92
%
ISUPPLY Supply Current
ON Mode
OFF Mode, SHDN=0
0.8
0.3
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
0.5
ILX
LX Leakage Current
VCC = 12V
VLX =0V
1
µA
VREF
Reference Voltage
TA = 25°C
1.17
1.24
1.31
V
∆V
REF
Temperature Reference
Drift
50
ppm/°C
fOSC
Switching Frequency
B series
C series
180
160
200
220
280
KHz
RC
Compensation Pin
Impedance
7500


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