The SM4053C IC contains one buck converter for VGL output and three boost converters for VDD, HVDD, and VGH output. This multi-function IC integrates several DC-to-DC converters, gamma, logic level shifters, and VCOM sections. Moreover, the SM4053C IC provides overload-protected VGH ODD and EVEN outputs using a flip-flop technique.
SM4053C IC Technical Specifications
Application: Power management of LCD TV and LCD Monitor display panels.
Package: QFN (Quad Flat No-lead) package.
Number of Terminals: 14x4 = 56 pins.
Operating Voltage (VIN): DC 9.4 Volts to 14 Volts.
Logic Voltage (Vlogic): 3.3 Volts.
Protection: Excellent protection against over-voltage, short-circuit, over-current, and over-temperature events is provided by the SM4053 IC to protect the LCD panel.
SM4053C IC Voltage Details
The standard output voltages of the SM4053 IC are VDD: 15 Volts, HVDD: 7.5 Volts, VGL: -5 Volts, and VGH: 27 Volts. The level shifter clock signals (CLK1 to CLK6) are typically 7 Volts. Gamma output voltages vary depending on different display panels, and the flip-flop voltages of VGH ODD and EVEN operate sequentially between -5V and +27V.
You can also check the SM4186 IC Pinout Diagram HERE.
SM4053C IC Schematic Circuit Diagram Datasheet and Voltage Details
The circuit diagram of the SM4053C IC includes the datasheet and pinout of the 3NP and 3PN components marked Q1 and Q2. The 3NP (NSM80101MT1G) is an NPN Transistor with a Series Switching Diode, and the 3PN (NSM80100MT1G) is a PNP Transistor with a Series Switching Diode. In this schematic, Q1 is 3NP and Q2 is 3PN.
SM4053C IC Circuit Diagram and 3PN / 3NP Pin Data Configuration
3PN and 3NP Transistor Pinout Datasheet
| Pin | 3PN (NSM80100MT1G) Pinout | 3NP (NSM80101MT1G) Pinout |
|---|---|---|
| 1 | Cathode (Two Diodes) | Emitter (Switching Transistor) |
| 2 | Base (Switching Transistor) | Base (Switching Transistor) |
| 3 | Collector | C and A (Collector and Anode) |
| 4 | Emitter / Anode | Anode (Switching Diode) |
| 5 | C & A (Collector & Anode) | Cathode (Switching Diode) |
| 6 | Cathode (Switching Diode) | Collector (Switching Transistor) |
You can also view the RT6908 IC Schematic Circuit Diagram HERE.
SM4053C IC Substitution and Equivalents
The TPS65175 IC is a fully equivalent substitute for the SM4053 IC. Both IC circuit diagrams, detailed component lists, and operating values are published HERE.
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