POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS The TPS65021RHA is a power management IC (PMIC) manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Input Voltage Range:** 2.5V to 6.0V
- **Output Voltage:**
- 2x Step-Down DC-DC Converters (Buck Regulators):
- **Buck1:** Adjustable (0.8V to 3.3V)
- **Buck2:** Adjustable (0.8V to 3.3V)
- 3x LDOs (Low-Dropout Regulators):
- **LDO1:** Fixed 1.8V or Adjustable (1.2V to 3.3V)
- **LDO2:** Fixed 1.2V or Adjustable (0.7V to 2.0V)
- **LDO3:** Fixed 1.2V or Adjustable (0.7V to 2.0V)
- **Output Current:**
- **Buck1:** Up to 1.2A
- **Buck2:** Up to 1.2A
- **LDO1:** Up to 200mA
- **LDO2 & LDO3:** Up to 100mA each
- **Switching Frequency:** 2.25MHz (Typical)
- **Efficiency:** Up to 95% (Buck Converters)
- **Package:** 40-pin QFN (RHA)
- **Operating Temperature Range:** -40°C to +85°C
### **Description:**
The TPS65021RHA is a highly integrated power management IC designed for portable applications, particularly those powered by single-cell Li-Ion batteries. It combines two high-efficiency step-down converters (buck regulators) and three low-dropout linear regulators (LDOs) in a compact QFN package. The device supports dynamic voltage scaling (DVS) for power optimization and includes features such as power sequencing and fault protection.
### **Features:**
- **Dual High-Efficiency Buck Converters:**
- 2.25MHz fixed-frequency PWM operation
- Automatic PFM/PWM mode switching for improved efficiency
- **Three Low-Dropout Linear Regulators (LDOs):**
- Two adjustable LDOs (LDO2 & LDO3)
- One fixed or adjustable LDO (LDO1)
- **Dynamic Voltage Scaling (DVS):**
- Adjustable output voltage via I²C interface
- **Power Sequencing Control:**
- Configurable startup and shutdown sequencing
- **Protection Features:**
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Undervoltage lockout (UVLO)
- **I²C Interface:**
- Allows control and monitoring of output voltages
This information is based on TI's official datasheet and product documentation for the TPS65021RHA.
