5562A / G5562A IC Schematic Circuit Diagram

Number of the IC - 5562A, G5562A
Application - Power Management of TFT LCD TV Panel
Operating Voltage - DC 8 Volts to DC 14 Volts
Switching Frequency - 500KHz and 700KHz (Optional) For DC-To-DC Converter
Temperature - -40°C to 85°C
Package of 5562A IC - QFN 48 Pin (Quad Flat No-Lead Package)

The 5562A IC is used for power management of countless thin-film transistors in the LCD TV panel. The circuit designed by the 5562A IC has a step-down converter for the VGL charge pump, which provides the system's logic voltage, and a step-up converter for the VGH charge pump, which supplies the source voltage. The 5562A IC has an integrated dual charge pump circuit, generating VGH and VGL voltages independently.

5562A or G5562A IC Schematic Circuit Diagram, Pinout, Pin Function, Pin Voltage, and Datasheet

The 5562A IC has a unique VCOM and AVDD voltage output arrangement; for DC-to-DC voltage conversion, the pulse generator circuit has a fixed switching frequency of 500 kHz or 750 kHz.

LED TV Companies design different types of circuits in their technology for the power management of TFT LCD panels. They produce different output voltages by increasing or decreasing the circuit's frequency, voltage, and current rate; in this case, resistors, capacitors, and inductors of other values are used in the schematic circuit diagram designed by the 5562A IC.

Following the BOE company's LCD TV panel, I have designed the 5562A schematic circuit diagram below.

5562A / G5562A IC Schematic Circuit Diagram

These two high and low voltages, VGH and VGL, are connected to two pins of the Level Shifter IC.

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5562A / G5562A IC Pin Name and Pin Voltage Details (1 to 48)

Pin No.	Pin Name	Pin Voltage
1	VREF	16.8 Volts
2	VOP	16.8 Volts
3	GND	0 Volts
4	OPP	8.3 Volts
5	OPN	8.3 Volts
6	OPO	8.3 Volts
7	XAO	0.56 Volts
8	GVOFF	-
9	EN	12 Volts
10	FBB	0.2 Volts
11	OUT	3.3 Volts
12	NC	0 Volts
13	SWB	3.3 Volts
14	SWB	3.3 Volts
15	NC	0 Volts
16	IN2	12 Volts
17	IN2	12 Volts
18	GND	0 Volts
19	VDET	0 Volts
20	IVL	12 Volts
21	VL	5.1 Volts
22	FSEL	3.5 Volts
23	CLIM	1.15 Volts
24	SS	3.49 Volts
25	SW	12 Volts
26	SW	12 Volts
27	PGND	0 Volts
28	PGND	0 Volts
29	GD_I	16.8 Volts
30	GD_I	10.27 Volts
31	FB	0.04 Volts
32	COMP	0.1 Volts
33	THR	1.4 Volts
34	SUPPLY	12.33 Volts
35	CPGND	16 Volts
36	DRVP	4.18 Volts
37	DLY1	5.0 Volts
38	FVP	33.5 Volts
39	VGH	33.5 Volts
40	VGHM	1.2 Volts
41	DRN	0 Volts
42	SUPN	12 Volts
43	DRVN	7.8 Volts
44	GND	0 Volts
45	FBN	0 Volts
46	REF	1.3 Volts
47	VREF	1.3 Volts
48	VREF_I	16 Volts

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Watch the video tutorial related to 5562A IC to solve the vertical line problem of LED TV

Equivalent or substitute for 5562A IC - 6861AAQ IC

Moreover, the pin function of the RT9955 IC is the same.

Watch the Troubleshooting Video on Facebook

For those who prefer a quick guide on mobile, I have also shared a short video tutorial on my Facebook page. In this video, I’ve demonstrated the practical steps to diagnose the 5562A IC voltages and fix the panel problem effectively.