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SRS-X9
43
VOUT 1
VIN
6
VSS 2
ON/OFF 3
+
–
REFERENCE
VOLTAGE
ON/OFF
CONTROL
VSS
5
SSC
4
INRUSH CURRENT
LIMITING
THERMAL
SHUTDOWN
OVERCURRENT
PROTECTION
IC512, 919, 922 S-13A1A33-E6T1U3
IC918, 923 S-13A1A12-E6T1U3
IC907 S-812C50BPI-C5ETFG
IC905, 906 TPS54331GDR
EN 3
VIN 2
BOOT 1
7 GND
8 PH
5 VSENSE
SHUTDOWN
LOGIC
BOOT
CHARGE
THERMAL
SHUTDOWN
SS 4
ENABLE THRESHOLD
ENABLE
COMPARATOR
+
+
–
6 COMP
MAXIMUM
CLAMP
FREQUENCY
SHIFT
GATE
DRIVE
LOGIC
BOOT
UNDERVOLTAGE
LOCKOUT
OSCILLATOR
SLOPE
COMPENSATION
ECO-MODE
MAXIMUM CLAMP
DISCHARGE
LOGIC
VOLTAGE
REFERENCE
PWM
COMPARATOR
PWM
LATCH
6
Q R
S
12 A/V
CURRENT
SENSE
ERROR
AMPLIFIER
1
NC
3
VOUT
2
VIN
–
+
REFERENCE
VOLTAGE
SHORT-CIRCUIT
PROTECTION
4 VSS
5 VIN
6 ON/OFF