Sharp LC-52XS1E Service Manual page 74

LC-52XS1E/RU/LC-65XS1E/RU
Pin No. Pin Name
18 COMP1
19 FB1
20 EN1
21 VCC
22 EN2
23 VREG3
24 RT
25 FB2
26 COMP2
27 SS2
28 TM2
23.IC5902 (VHiBD9045FV-1Y)
This is a DC/DC converter, which inputs 15V from the power supply unit and generates 1.2V and 1.8V used within the IF PWB.
I/O
O Error amplifier output 1
I Error amplifier input 1
I Output 1 ON/OFF terminal
- Input power supply terminal
I Output 2 ON/OFF terminal
- The REG output for standard power supplies
- Oscillation frequency setting terminal
I Error amplifier input 2
O Error amplifier output 2
- Soft starting time setting terminal 2
- Output 2 OCP and an OVP timer latch setting terminal
Pin Function
5 – 15