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ST1PS03 Datasheet(PDF) 8 Page - STMicroelectronics

Part # ST1PS03
Description  400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and load switch
PDF  25 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1PS03 Datasheet(HTML) 8 Page - STMicroelectronics

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6
ST1PS03 block diagram
Figure 3. Block diagram
d
EN
VIN
D0
D1
PGOOD
SW
VOUT
GND
Bandgap/Bias
CTRL
Logic
PWM
Vref
VOUT
Vref
VIN
VFB
VIN
L
C3
Soft Start
Ramp
VSW
Zero
Crossing
Comp.
High
Current
Mode
C1
R1
Vout
Selection
Logic
VIN
Vth100%
VIN
Vuvlo
UVLO Comp.
Driver/
Anti-cross
conduction
circuitry
Vref
VSW
-
+
+
+
Compensation
VFB
TON
VSW
VOUT
Pulse Freq.
Detection
Min. ON Time
Min. OFF Time
100%
Mode
Comp.
Peak and Valley
CURRENT LIMIT
-
+
-
+
+
-
-
+
Output
Discharge
D2
C4
VOUT2
Discharge
Current slew
Rate CTRL
Aux
C2
VIN_AUX
VOUT_AUX
VIN_AUX
S1
S2
S3
S4
ST1PS03
ST1PS03 block diagram
DS13801 - Rev 1
page 8/25



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