The CS902-A-R IC is used in the DC-TO-DC converter circuit in the power management circuit of the TCL LCD panel. N-channel and P-channel MOSFETs for boost and buck converter circuits are integrated inside the CS902 IC.
Circuit Diagram of CS902 IC
In the circuit diagram of CS902 IC, the terminal marked VIN is the
voltage input terminal, where usually 12 volts is input as the operating voltage.The CS902-A-R IC is a programmable TFT LCD power management IC (PMIC). In the circuit diagram, the SCL and SDA signals connect to pins 5 and 6 of this IC, which are coming from the processor. Data and clock pulses can control the output voltage of the CS902 IC circuit.
MT3151A05-5XC-5 T-Con circuit board uses CS902-A-R or CS902 IC as DC to DC converter or LCD power management IC (PMIC). Moreover, CS902 IC is also installed on the MT3151A05-9-XC-2 T-Con circuit board.
CS902-A-R IC Circuit Diagram is published below.
As per the size and voltage requirements of TFT (Thin Film Transistor) LCD TVs and monitors, the CS902 IC schematic circuit diagram design may vary slightly, keeping the basics right.
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CS902 DC-to-DC IC Schematic Circuit Diagram |
Capacitors Value of CS902-A-R IC Circuit
Resistors Value of CS902 PMIC Circuit
Values of inductors and Fuse:
F1 - 6 Amp, L1 - 6.8µH, L2 - 6.8µH.
Values of Transistors in CS902 IC Circuit Diagram:
Q1 - NPN Transistor, Q2 - S2A (PNP Transistor)
Diodes Values in CS902 Diagram:
SMD Diode - It will be updated
Output & Input Voltages details of CS902 IC Circuit
• VIN - Depending on the circuit design, the operating voltage of the CS902 IC is 8 volts to a maximum of 14 volts.
• Logic Voltage - 3.3 Volts
• VGH - 20 volts to 40 volts output as VGH from positive charge pump regulator (programmable)
• VGL - Can output -4.5 volts to -13 volts as VGL from a negative charge pump regulator (programmable).
• AVDD - From the sync-boost regulator of the CS902 IC circuit, the output is from 13.5 volts to 19.8 (by programming).
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