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Texas Instruments TPS650732RSLT
- Part No.:
- TPS650732RSLT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TPS650732RSLT.pdf
- Description:
- IC PWR MGMT 5CH W/2 LDO 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
TPS650732RSLT from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-Ion/Li-Polymer battery systems, featuring a 2-A power path manager, linear battery charger (1.5-A max), three 2.25-MHz step-down converters (0.6 A / 0.6 A / 1.5 A), two LDOs (1.8 V / 1.8 V), wLED boost driver, 10-bit ADC, and touch screen interface - deployed in AM3505-based portable navigation and industrial handhelds.
For engineers reviewing the TPS650732RSLT datasheet, TPS650732RSLT pinout, TPS650732RSLT application, or TPS650732RSLT equivalent, key selection considerations include internal power sequencing support, 400-ms PGOOD/reset delay, I²C programmability, thermal regulation with NTC input, and compatibility with AM3505 processor core/memory/peripheral rail requirements.
Technical Context
The TPS650732RSLT implements an integrated power path architecture that dynamically selects between AC adapter (pin AC) and USB (pin USB) inputs while regulating charge current to the battery (pins BAT), with real-time thermal monitoring via TS pin and safety timers. Its three buck converters operate in fixed-frequency PWM or light-load PFM mode, each supporting 100% duty cycle for ultra-low dropout operation.
Two LDOs (VLDO1/VLDO2) are fixed at 1.8 V, supplied from SYS voltage, and support dynamic voltage scaling on LDO2. The wLED boost converter drives up to two LED strings (25 mA per string) using internal current sinks (ISINK1/ISINK2) and I²C-controlled dimming, while the integrated 10-bit ADC monitors four analog inputs (AD_IN1–AD_IN4) for touch screen (X/Y plates) and system sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Power Path Output Current | 2 A continuous - enables simultaneous system operation and battery charging without external OR-ing circuitry |
| Battery Charge Current | 1.5 A max linear charge - supports fast recharge of single-cell Li-Ion packs with thermal regulation |
| DCDC Converter Frequency | 2.25 MHz fixed - allows use of compact 1.5–2.2 µH inductors and low-ESR ceramic capacitors |
| DCDC3 Output Current | 1.5 A - powers high-current peripherals or memory interfaces requiring stable 1.8 V supply |
| LDO Output Voltages | VLDO1 = 1.8 V, VLDO2 = 1.8 V - fixed outputs optimized for AM3505 I/O and always-on rails |
| wLED Driver Capability | 2 × 25 mA strings - supports dual-display backlighting with I²C dimming and internal current sinks |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) - enables full register configuration including sequencing, voltage scaling, and fault reporting |
| Reset Delay | 400 ms - configurable reset timing aligned with AM3505 boot sequence requirements |
Pinout & Package
TPS650732RSLT is housed in a thermally enhanced 48-pin VQFN package (6.0 mm × 6.0 mm, 0.4 mm pitch) with exposed thermal pad connected to PGND. The package supports automated optical inspection and high-density PCB layouts typical in portable industrial devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC / USB | Power path input sources | Accepts 4.3–5.8 V DC adapter (AC) or 5 V USB (USB); internal current limiting (100/500/800/1300 mA selectable) |
| BAT | Battery connection | Direct interface to single-cell Li-Ion/Li-Polymer; supports 2-A discharge and 1.5-A charge paths |
| SYS | Power path output | System voltage rail (typically ~3.6 V); supplies all internal regulators and external loads |
| EN_DCDC1–EN_DCDC3 | Converter enable inputs | Active-high logic enables; used for sequencing control and power-state management |
| VLDO1 / VLDO2 | LDO outputs | Fixed 1.8 V outputs; VLDO2 supports dynamic voltage scaling via I²C register writes |
| ISINK1 / ISINK2 | wLED current sink inputs | Connect LED cathodes; sink up to 25 mA per channel with I²C-programmable current levels |
| AD_IN1–AD_IN4 | Touch screen analog inputs | Four dedicated ADC channels for X1/X2/Y1/Y2 plate sensing in resistive touch controllers |
| TS | Temperature sense input | Connects to NTC thermistor (10 kΩ curve 2 or 100 kΩ curve 1); enables battery temperature monitoring |
| INT / RESET / PGOOD | System status outputs | Open-drain interrupt, active-low reset (400 ms delay), and power-good signals for host processor coordination |
| PB_IN / POWER_ON | Power button interface | Debounced push-button input and processor-held power-on signal for controlled startup/shutdown sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Internal Power Sequencing | Hardwired internal sequencing (not external pin-controlled) - eliminates need for external sequencer in AM3505 designs |
| Thermal Regulation & Safety Timers | Automatic charge current reduction above junction threshold (150 °C) plus fixed safety timer - prevents battery overcharge and thermal runaway |
| Light-Load Efficiency Mode | PFM operation below ~100 mA load per buck converter - maintains >85% efficiency at microamp idle currents |
| Integrated Touch Screen Controller | Four-channel 10-bit ADC with dedicated X/Y plate inputs - enables direct resistive touch interface without external controller |
| Dynamic Voltage Scaling (DVS) | LDO2 output adjustable via I²C register write - supports runtime voltage adaptation for low-power states |
| Undervoltage Lockout (UVLO) | Programmable 2.8–3.25 V threshold with 450 mV hysteresis - ensures clean power-up and brownout recovery |
Applications
| Handheld Navigation Terminal | Industrial Data Collector |
|---|---|
Use Scenario: Ruggedized GPS-enabled field device with dual LCD display, barcode scanner, and cellular modem operating on removable Li-Ion battery. IC Role / Device Role: Central PMIC managing battery charge, core (1.2 V), memory (1.8 V), I/O (3.3 V), and dual-display backlight (wLED). Use Value: Single-chip integration reduces BOM count by 12+ discrete regulators and eliminates external sequencing logic required for AM3505 boot compliance. | Use Scenario: Battery-powered warehouse inventory scanner with resistive touchscreen, Wi-Fi module, and flash storage. IC Role / Device Role: Power hub delivering regulated rails to ARM processor, NAND flash, RF transceiver, and touch controller - all synchronized via internal sequencing. Use Value: 400-ms PGOOD delay and POWER_ON handshake ensure deterministic boot timing; TS input enables battery health monitoring during extended deployments. |
| Portable Medical Monitor | Embedded HMI Panel |
Use Scenario: CE-certified patient vitals recorder with OLED display, ECG front-end, and Bluetooth LE connectivity - powered by sealed Li-Polymer cell. IC Role / Device Role: Safety-aware power manager providing isolated analog rails (LDOs), low-noise digital supplies (buck converters), and LED status indicators. Use Value: Thermal shutdown (150 °C) and battery fault comparator meet IEC 62304 Class B software safety requirements for embedded medical devices. | Use Scenario: DIN-rail mounted human-machine interface with 7-inch resistive touchscreen, CAN bus interface, and real-time Linux OS. IC Role / Device Role: Primary power controller supplying AM3505 SoC, display backlight, CAN transceiver, and isolated I/O - coordinated via I²C registers. Use Value: Integrated 10-bit ADC channels replace external touch controller IC; ISET1/ISET2 pins allow precise LED current calibration across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650731RSLT | LDO1/LDO2 outputs fixed at 1.8 V / 3.3 V; no DVS on LDO2 | Targets OMAP35xx-based systems requiring higher I/O voltage; lacks LDO2 scaling capability | Select when 3.3 V peripheral rail is mandatory and DVS is unnecessary |
| TPS65073RSLT | Same LDO outputs (1.8 V / 1.8 V) but uses external sequencing (no internal sequencing option) | Requires external GPIO or CPLD for power-up coordination; less suitable for AM3505 reference designs | Choose only if board-level sequencing logic already exists and internal sequencing is redundant |
Compared with TPS650731RSLT and TPS65073RSLT, the TPS650732RSLT uniquely combines 1.8 V / 1.8 V LDO outputs with internal sequencing and DVS support - making it the optimal fit for AM3505-based designs where layout space, firmware simplicity, and adaptive power management are prioritized.
Availability
TPS650732RSLT is available at Aetrix Electronics and suitable for handheld navigation terminals, industrial data collectors, portable medical monitors, and embedded HMI panels requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under extended temperature operation.
Supply support for TPS650732RSLT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in battery-powered portable systems.
The TPS6507x product line was designed specifically for OMAP™ and AM3505-based portable computing and industrial handheld platforms, integrating battery charging, multi-rail DC/DC conversion, LDO regulation, backlight driving, and touch interface into a single compact package.
FAQ
What is the primary application target for the TPS650732RSLT?
The TPS650732RSLT is specifically engineered for AM3505-based portable systems such as handheld navigation terminals and industrial data collectors. It delivers tightly coordinated power rails - including 1.2 V/1.35 V core, 1.8 V memory, 1.8 V I/O, and dual wLED backlight - with internal sequencing and thermal safety features required by this processor family. The TPS650732RSLT integrates all essential power functions without external sequencing logic.
Does the TPS650732RSLT support dynamic voltage scaling on both LDOs?
The TPS650732RSLT supports dynamic voltage scaling only on VLDO2 via I²C register writes; VLDO1 is fixed at 1.8 V. This design enables runtime adjustment of the I/O rail voltage to match processor low-power states while maintaining a stable always-on supply on VLDO1. The TPS650732RSLT's LDO_CTRL2 register controls VLDO2 output level, with step resolution defined in the datasheet's "LDO2 Dynamic Voltage Scaling" section.
What is the function of the TS pin on the TPS650732RSLT?
On the TPS650732RSLT, the TS pin serves as the temperature sense input for battery pack monitoring. It connects directly to an NTC thermistor (10 kΩ curve 2 or 100 kΩ curve 1), and the internal circuitry converts the resistance reading into a digital value accessible via the ADC. This enables real-time thermal profiling during charging and discharging, triggering thermal regulation if the TPS650732RSLT junction exceeds 150 °C.
Can the TPS650732RSLT operate without an external microcontroller?
Yes - the TPS650732RSLT supports autonomous operation using its internal state machine and hardwired sequencing. With PB_IN pulled low and POWER_ON asserted by the host processor, the TPS650732RSLT powers up DCDC1–DCDC3 and LDO1/LDO2 in predefined order without I²C initialization. However, full feature access - including DVS, wLED dimming, ADC reads, and fault logging - requires I²C communication with a host controller.
What are the input capacitor requirements for the AC and USB pins on the TPS650732RSLT?
The TPS650732RSLT requires a minimum 1 µF ceramic capacitor from each of the AC and USB pins to AGND/PGND, as specified in Section 8.3 of the datasheet. These capacitors stabilize input voltage during transient load changes and suppress high-frequency noise from the adapter or USB source. For robust ESD protection and ripple suppression in industrial environments, TI recommends using 2.2 µF X5R ceramics rated for ≥10 V.
TPS650732RSLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Mobile/OMAP™
- Current - Supply:
- -
- Voltage - Supply:
- 2.8V ~ 6.3V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (6x6)
TPS650732RSLT FAQ
1.How can I place an order for TPS650732RSLT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650732RSLT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS650732RSLT reliable?
The price and inventory of TPS650732RSLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650732RSLT is usually 5 days.
3.What payment methods are accepted for TPS650732RSLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650732RSLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650732RSLT?
TPS650732RSLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650732RSLT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS650732RSLT?
For technical support, including TPS650732RSLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650732RSLT requirements.
6.How does Aetrix verify that TPS650732RSLT is sourced from the original manufacturer or authorized distributors?
All TPS650732RSLT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS650732RSLT meets industry standards.
7.What is the process for return or replacement of TPS650732RSLT?
All TPS650732RSLT units undergo pre-shipment inspection (PSI). If there is an issue with TPS650732RSLT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS650732RSLT part is unused and in its original packaging.
Return procedure for TPS650732RSLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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