Datasheet
Block schematic ST1S15
12/28 DocID023280 Rev 3
6 Block schematic
Figure 21. Block schematic
FB
EN
MODE
Driver
&
Anti X-Cond
SW
V
IN
Oscill.
&
Sawtooth
V-I Reference
&
Prereg + U VLO
Enable & Soft Start
PFM - Analog timing
PFM - PWM
Switch Control Log ic
PWM Comparator
Err or Amp & Comp.
Vref_PWM
Vref_PFM
Cur rent Limit & Shor t Protect.
Ther mal Pr otect.
GND
R1
R2
AM11905v1