TPS65951A1ZGU

TPS65951A1ZGU is a Texas Instruments Power Management IC (PMIC) in the TPS6595x family. It’s a highly integrated PMIC designed for portable/embedded systems, providing multiple voltage rails through built‑in buck regulators and LDOs to power a host processor and peripherals. It supports software-controlled sequencing, power-switching, and protection features. Control and monitoring are via an interface such as I2C/SPI, enabling configuration of outputs and fault/status reporting. The device includes protections like undervoltage lockout, overvoltage/overcurrent protection, and thermal monitoring. The A1 indicates a specific revision, while ZGU is the package code for the RoHS-compliant variant (typically a VQFN). Typical use is to replace multiple regulators and power rails for TI processors and other subsystems in mobile/embedded platforms, handling startup/shutdown sequencing and protection in one package. For exact rail voltages, pinout, and electrical specs, consult the TI TPS65951A1ZGU datasheet and product page.

TPS65951A1ZGU is TI’s multi-rail power-management IC (PMIC). Key features include:
- Multi-rail power solution with integrated DC-DC converters and LDOs for processor and peripheral rails
- Programmable output voltages and sequencing via control interface
- I2C control/monitoring for setup, fault reporting, and status
- Power-path management with safe power-up/power-down sequencing and wake events
- Comprehensive protections: undervoltage/overvoltage, overcurrent/short-circuit, thermal protection
- Fault/status reporting with interrupt outputs and reset/power-on signals
- Built-in watchdog timer and Power-On Reset for robust startup
- Voltage monitoring with configurable thresholds and fault latching
- Suitable for portable/embedded designs with a compact A1ZGU package
Note: Exact rail counts, voltage ranges, and current specs vary by variant; refer to the datasheet for detailed electrical characteristics and pinout.

VQFN-56 package (8x8 mm, lead-free).

Pin count: 48 pins in a QFN package (6x6 mm) with an exposed pad (TPS65951A1ZGU).
Function: USB Type-C Port Controller with Power Delivery (PD) negotiation and related PMIC functions (power-path control, regulators, and system management).

- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: An American multinational corporation that designs and manufactures semiconductors and electronics, specializing in analog, mixed-signal, and embedded processing ICs.

Applications areas for TPS65951A1ZGU:
- Mobile/portable devices: smartphones, tablets, wearables
- Automotive: infotainment, telematics, instrument clusters
- Industrial/IoT: gateways, sensors, controllers
- Consumer electronics: cameras, set-top boxes, audio/video devices
- Embedded systems: development boards, single-board computers
- Medical devices: portable monitors, diagnostic tools

TPS65951A1ZGU is TI’s USB Type-C/Power Delivery controller. Direct 1:1 equivalents vary by PD spec and features, but common cross-references include:
- STMicroelectronics: STUSB4500, STUSB1602
- NXP: PTN5100, PTN5150
- Onsemi: FUSB302 (and related FUSB30x)
Note: exact pinout, PD revision, current rating, and packaging differ—verify specs carefully when replacing.