CS902-A-R IC pin functions and datasheet.
IC Number - CS902-A-R
Applications - LCD TV, Desktop, and Laptop Monitor LCD Power Management.
The CS902-A-R IC is used in the DC-to-DC converter circuit of the ST3151A05-F-XC-1 32-inch LCD panel. When the LED or LCD TV panel is damaged, the datasheet of the DC-DC Converter IC is required to repair the LED TV display panel using an alternative method without a COF bonding machine. NT61237H-C6523A/A COF is used in this panel with the CS902-A-R IC.
CS902-A-R IC Pinout and Pin Functions
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| CS902-A-R IC datasheet or CS902 IC Pinout |
CS902-A-R IC datasheet (capsule view - pins 1 to 20)
1 - VINB1 - Power Supply Input
2 - VINB1 - Power Supply Input
3 - AVIN - Analog input voltage for Analog Circuit
4 - AGND - Ground for Analog Circuit
5 - SDA - Serial data input & output
6 - SCL - Serial clock pulse input & output
7 - AO - Device address 0bit
8 - HVS - HVS enable
9 - NC - Not connected (Unused pin)
10 - COMP - Compensation pin for boost converter
Related Post: CS902-A-R IC Circuit Diagram
11 - VL - Logic regulator output for internal circuit
12 - NTC - Temperature compensation pin for VGH
13 - PGNG - Input power ground
14 - PGNG - Input power ground
15 - LX - Switch Circuit pin for boost converter
16 - LX - Switch Circuit pin for boost converter
17 - LXI - High-side switch input
18 - LXO - High-side switch output pin
19 - LXO - High-side switch output pin
20 - VGL - Low gate voltage output
• More LED TV IC: SM4186 IC Datasheet Pinout
CS902 IC pinout (Pin 21 to Pin 40)
21 - DRVN - Base driver of the external NPN transistor for the VGL Circuit
22 - DEVP - The base driver of the external PNP transistor for the VGH Circuit
23 - AVIN - Analog input voltage for Analog Circuit
24 - NC - Not connected
25 - A1 - Compatible device address bit1
26 - VFLK - Gate shipping control input pin
27 - NC - Not connected (unused pin)
28 - OGND - OPAMP ground pin, Ground of the operational amplifier circuit
29 - OP_OUT - OPAMP out, the Output pin of the operational amplifier circuit
30 - NEG - Negative input of the operational amplifier circuit
31 - POS - Positive input of the operational amplifier (OPAMP)
32 - VSUP - Voltage supply of OPAMP
33 - EN - Chip Enable
34 - VGH - Voltage of high gate output
35 - VGHM - Gate shipping function switch
36 - RE - Discharge (Gate shipping function circuit)
37 - OUTB1 - Buck converter output pin
38 - LXB1 - Switch pin of Buck converter output
39 - LXB1 - Switch pin of Buck converter output
40 - Boot1 - Gate driver Voltage for N-channel MOSFET of the buck converter
What is the function of AVDD, CKV, STV, VGH, VCOM, VGL, and VGH in LCD Panels? Click Here
CS902-A-R is a unique IC for the power management of TFT LCD panels. It can be used on various TFT panels by designing a circuit that changes the value of the resistor and PWM frequency to apply the bias supply voltage to the required pin while keeping the input voltage of this IC fixed.
CS902-A-R IC Related Video Tutorial
Some information about CS902-A-R IC:
- The CS902 IC has a sync boost regulator circuit to output the AVDD voltage from 13 to 19 volts. It also has programmable output current control.
- Programmable VGH charge pump circuit from 20 to 40 volts (Gate shaping voltage).
- Its frequency is fixed at 750 kHz for a DC-to-DC voltage boost.
- There is a negative charge pump circuit for the VGL output. (-4.5 Volts to -13.5 Volts).
- Switching Frequency 750KHz
- Short Circuit Protection is available
- An excellent system of over-temperature protection.
- VGH Temperature compensation
- CS902 IC Schematic Circuit Diagram
- 6861AAQ IC Circuit Diagram
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