TSM121 查看數據表（PDF） - STMicroelectronics
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TSM121 Datasheet PDF : 12 Pages
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TSM121
Figure 3 : Detailed Internal Schematic
VCC
IN 12V
IS12
Rs12
Vcs12
OCP
TSUR
VCC
VS12
OUT 12V
IN 5V
IS5
Rs5
VS5
OUT 5V
Vov12 OVP
Vref1
Vuv12
Vcs5
UVP
OCP
Vov5
OVP
OCP
Tsur
OVP
UVP
Power Up
UV blanking
Tuv
Tfault
5V
SQ
R
Trem
FAULT
5V
Vref1
IN 3.3V
IS33
Rs33
VS33
OUT 3.3V
Vuv5
Vcs33
UVP
OCP
Vov33 OVP
Vref1
TSM121
0.8V
Tpg
Vuv33 UVP
EP
OVP
Vs5 Vs12
VREF2
C3
R1 R2 R5
R3 R6
Vcc C2
IN+
IN-
C1
FB
R4
OSC
SS/DTC
1.25V
ERR AMP
OSCILLATOR
R7
Cf
VREF2
PWM COMP
SS/DTC COMP
VREF1
HOUSEKEEPING CIRCUIT
PWM CIRCUIT
FAULT
Q
D
CK
!Q
GND
1.25V
Trem
Crem
Tuv
Cuv
REM
PG
TO MOTHERBOARD
Tpg
Cpg
PI
Vcc
R16
Vcc
R15
C1
C2
R13
Vcc
R14
+
R12
8/12
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