Overview
The TPS650243RHBT is a highly integrated power management IC (PMIC) designed by Texas Instruments for applications powered by a single Li-Ion or Li-Polymer cell. This device is part of the TPS65024x family and is tailored to provide multiple power rails for processor-based systems, including core, peripheral, I/O, and memory voltages. The TPS650243RHBT is packaged in a compact 32-pin VQFN (5.00 mm × 5.00 mm) and operates over a temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | VQFN-32 | - |
| Package Size | 5.00 mm × 5.00 mm | - |
| Operating Temperature Range | -40°C to 85°C | - |
| Input Voltage Range | 2.5 V to 6.0 V | V |
| Step-Down Converter 1 (VDCDC1) | 1.6 A, 2.80 V or 3.3 V (adjustable) | A, V |
| Step-Down Converter 2 (VDCDC2) | 1.0 A, 1.8 V or 2.5 V (adjustable) | A, V |
| Step-Down Converter 3 (VDCDC3) | 0.8 A, 1.0 V or 1.2 V (selectable via DEFDCDC3 pin) | A, V |
| LDO1 and LDO2 | 200 mA each, externally adjustable | mA |
| LDO for Vdd_alive | 30 mA, 1.2 V | mA, V |
| Switching Frequency | 2.25 MHz | MHz |
| Quiescent Current | 85 μA | μA |
| Thermal Shutdown Protection | Yes | - |
Key Features
- Three highly efficient step-down converters for system voltage (VDCDC1), memory voltage (VDCDC2), and processor core voltage (VDCDC3)
- Dynamic voltage management for processor core
- Two general-purpose 200-mA LDO voltage regulators (LDO1 and LDO2) with externally adjustable output voltages
- A 30-mA LDO for the Vdd_alive voltage rail
- Separate enable pins for inductive converters
- 2.25-MHz switching frequency
- Low power mode at light loads for maximum efficiency
- Thermal shutdown protection
- Compact 32-pin VQFN package
Applications
- Split-supply DSP and μP solutions, including ARM-based processors
- Cellular and smart phones
- Digital cameras
- PDA devices
- GPS systems
Q & A
- What is the package type and size of the TPS650243RHBT?
The TPS650243RHBT is packaged in a 32-pin VQFN with a size of 5.00 mm × 5.00 mm.
- What is the operating temperature range of the TPS650243RHBT?
The operating temperature range is -40°C to 85°C.
- What are the output currents and voltages for the step-down converters?
VDCDC1: 1.6 A, 2.80 V or 3.3 V (adjustable); VDCDC2: 1.0 A, 1.8 V or 2.5 V (adjustable); VDCDC3: 0.8 A, 1.0 V or 1.2 V (selectable via DEFDCDC3 pin).
- What is the function of the LDOs in the TPS650243RHBT?
There are two 200-mA general-purpose LDOs (LDO1 and LDO2) and a 30-mA LDO for the Vdd_alive voltage rail. All LDOs are externally adjustable.
- What is the switching frequency of the TPS650243RHBT?
The switching frequency is 2.25 MHz.
- Does the TPS650243RHBT have thermal shutdown protection?
- What are some typical applications for the TPS650243RHBT?
Typical applications include split-supply DSP and μP solutions, cellular and smart phones, digital cameras, PDA devices, and GPS systems.
- How does the TPS650243RHBT manage power efficiency?
The device enters a low power mode at light loads and can be forced into fixed-frequency PWM mode for maximum efficiency across a wide range of load currents.
- What is the quiescent current of the TPS650243RHBT?
The quiescent current is 85 μA.
- Can the output voltages of the LDOs be adjusted?
