Part A
TPS65910AA1RSLR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 3552 個数
- Series
- 電源管理 (PMIC) - 特殊用途電源
Replacement verdict
Not a drop-in replacement
The TPS650243RHBR and TPS65910AA1RSLR are not functionally interchangeable. Although both are Texas Instruments power management ICs, they differ fundamentally in integration architecture, power topology, and target application domain. The TPS650243RHBR is a multi-rail power management unit with integrated step-down converters and LDOs for battery-powered systems, while the TPS65910AA1RSLR is a highly integrated PMIC with an integrated RTC, smart reflex, and multiple buck converters designed for application processors. Direct substitution is not feasible without complete system redesign.
Different power topology
Different output configuration
Different package footprint
Different application domain
Parts at a glance
Part B
TPS650243RHBR
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 3360 個数
- Package
- VQFN-32
- Series
- PMIC - バッテリーマネジメント
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | TPS650243RHBR | TPS65910AA1RSLR | Why it matters |
|---|---|---|---|
| Function / Topology | Power Management IC (PMIC) for battery-powered systems with 2 step-down converters, 2 LDOs, and a battery charger | Integrated Power Management Unit (PMU) with 3 step-down converters, 8 LDOs, RTC, and battery charger | Determines the number and type of power rails available, directly affecting whether the device can supply all required voltages in a target design. |
| Number of Buck Converters | 2 | 3 | Buck converters provide high-efficiency step-down regulation for core and I/O rails; a different count limits which loads can be powered efficiently. |
| Number of LDOs | 2 | 8 | LDOs supply low-noise rails for analog, PLL, and peripheral circuits; fewer LDOs may require external regulators. |
| Input Voltage Range | 2.5 V to 6.0 V | 2.7 V to 5.5 V | Defines the compatible battery or supply voltage window; a narrower range may exclude certain battery chemistries or supply rails. |
| Package | 32-pin VQFN (RHB) | 48-pin VQFN (RSL) | Footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures reliable operation across the intended environmental conditions; identical ranges indicate similar thermal suitability. |
| Integrated Battery Charger | Yes (linear charger) | Yes (linear charger) | An integrated charger simplifies battery-powered designs; both devices include one, so this is not a differentiator. |
| Communication Interface | I2C | I2C | The control interface must match the host processor; both use I2C, so firmware compatibility is similar. |
| Target Application | Portable media players, navigation devices, and general battery-powered electronics | ARM Cortex-A8/A9 based systems, tablets, and embedded processors | Indicates the intended processor ecosystem and power sequencing requirements, which affect software and hardware integration. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | TPS65910AA1RSLR | TPS650243RHBR |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | TPS65910 | - |
| Applications | Handheld/Mobile Devices, OMAP™ | - |
| Voltage - Supply | 1.7V ~ 5.5V | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Cut Tape (CT), Tape & Reel (TR) | - |
| Function | - | Power Management |
| Battery Chemistry | - | Lithium Ion/Polymer |
| Number of Cells | - | 1 |
| Fault Protection | - | Over Temperature, Under Voltage |
Frequently asked questions
Are the TPS650243RHBR and TPS65910AA1RSLR pin-to-pin compatible or directly interchangeable?
No. The TPS650243RHBR is a 40-pin VQFN (RHB) power management IC, while the TPS65910AA1RSLR is a 48-pin VQFN (RSL) integrated power management unit. They differ in package size, pin count, pinout, and functional architecture, so they are not drop-in replacements.
What are the primary functional differences between the TPS650243RHBR and TPS65910AA1RSLR?
The TPS650243RHBR is a multi-channel power management IC with two step-down converters, two LDOs, and a 5 V/1 A boost converter intended for applications such as solid-state drives and embedded systems. The TPS65910AA1RSLR is a complete power management unit for AM335x and similar processors, integrating three step-down converters, eight LDOs, a real-time clock, and a smart reflex-compatible I2C control interface.
Can the TPS650243RHBR and TPS65910AA1RSLR operate from the same input supply voltage range?
No. The TPS650243RHBR operates from a 2.7 V to 5.5 V input supply. The TPS65910AA1RSLR operates from a 2.7 V to 5.5 V input supply for the main domain but includes specific supply rails and sequencing requirements for its integrated RTC and processor interface that differ from the TPS650243RHBR.
Do both devices support I2C communication for configuration and control?
Yes, both devices include an I2C interface. The TPS650243RHBR uses I2C for setting output voltages, enabling/disabling rails, and reading status registers. The TPS65910AA1RSLR uses I2C for similar control plus advanced features such as Smart Reflex voltage scaling and power sequencing for processor cores.
Which device is better suited for powering an AM335x processor?
The TPS65910AA1RSLR is specifically designed and validated by Texas Instruments as a companion PMIC for AM335x processors, providing the required voltage rails, sequencing, and Smart Reflex support. The TPS650243RHBR is not intended for AM335x processor power and lacks the specific rail count and sequencing required by that processor family.
Are the output current capabilities of the TPS650243RHBR and TPS65910AA1RSLR the same?
No. The TPS650243RHBR provides step-down converters with output currents up to 1.5 A and 1.0 A, plus LDOs and a boost converter rated at 1 A. The TPS65910AA1RSLR provides step-down converters with different current ratings and eight LDOs with lower per-rail current capabilities, optimized for processor core, I/O, and peripheral rails rather than high-current single-rail loads.
Do both devices include a real-time clock (RTC) with backup battery support?
No. The TPS65910AA1RSLR includes an integrated real-time clock with backup battery support. The TPS650243RHBR does not include an RTC function.
What are the typical target applications for each device?
The TPS650243RHBR is typically used in solid-state drives, tablets, embedded computing, and industrial equipment requiring a compact multi-rail power solution. The TPS65910AA1RSLR is typically used in designs based on AM335x, AM437x, and similar Sitara processors, as well as other applications requiring a highly integrated PMU with processor-specific sequencing and Smart Reflex support.