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ST1PS02 Datasheet(PDF) 9 Page - STMicroelectronics

Part # ST1PS02
Description  400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch
PDF  23 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1PS02 Datasheet(HTML) 9 Page - STMicroelectronics

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6
ST1PS02 block diagram
Figure 3. Block diagram
d
EN
VIN
D0
D1
PGOOD
SW
VOUT
GND
Bandgap/Bias
CTRL
Logic
VIN
L
Zero
Crossing
Comp.
C1
Rpu
Vout
Selection
Logic
VIN
Vuvlo
UVLO Comp
.
Driver/
Anti-cross
conduction
circuitry
-
+
+
+
Peak and Valley
CURRENT LIMIT
-
+
-
+
+
-
-
+
Output
Discharge
D2
CL
Vout2
C3
VOUT2
Discharge
Current slew
Rate CTRL
Aux
C2
Compensation
Soft-start
ramp
Min. ON time
Min. OFF time
Pulse freq.
detection
VOUT
VSW
VFB
Vref
VFB
Vref
PWM
VOUT
VSW
High current
mode
VSW
Vth 100%
VIN
VIN
VOUT
Vref
TON
100%
Mode
comp.
ST1PS02
ST1PS02 block diagram
DS13206 - Rev 1
page 9/23



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