双路输出 AMOLED 显示屏电源
| Display type | AMOLED |
| IC integration | AMOLED bias |
| Vin (Min) (V) | 2.9 |
| Vin (Max) (V) | 4.5 |
| Level shifter/scan driver (ch) | 0 |
| V_POS (Min) (V) | 4.62 |
| V_POS (Max) (V) | 4.62 |
| V_NEG (Min) (V) | -6.2 |
| V_NEG (Max) (V) | -2.2 |
| Features | Digital control interface |
| Topology | Boost, Inverting Buck-Boost |
| Rating | Catalog |
- 2.9V to 4.5V Input Voltage Range
- 0.8% Output Voltage Accuracy VPOS
- Excellent Line Transient Regulation
- 300mA Output Current
- Fixed 4.62V Positive OutputVoltage
- Digitally Programmable VNEG
- TPS65138: –2.2V to –6.2V
- TPS65138A: –2.2V to –5.2V
- -4.9V Default Value for VNEG
- Short Circuit Protection
- Thermal Hhutdown
- 3-mm × 3-mm QFN Package
The TPS65138 is designed to drive AMOLED displays (Active Matrix Organic Light Emitting Diode) requiring positive and negative supply rails. The device integrates boost converter and inverting buck boost converter designed suitable for battery operated products. The digital control pin (CTRL) allows programming the negative output voltage in digital steps. The TPS65138 uses a novel technology enabling excellent line and load regulation. This is required to avoid disturbance of the AMOLED display by the input voltage disturbances occurring during transmit periods in mobile phones.
