Texas Instruments TPS65735RSNR

Overview

TPS65735 from Texas Instruments is a dedicated power management unit (PMU) for active shutter 3D glasses, integrating a linear Li-ion battery charger, 8–16 V boost converter, dual full H-bridge analog switches for left/right LC shutter control, 2.2–3.0 V programmable LDO, and battery voltage scaling output. It delivers up to 100 mA fast-charge current, supports NTC thermistor-based temperature monitoring, and operates across 0–60°C ambient.

For engineers reviewing the TPS65735 datasheet, TPS65735 pinout, TPS65735 application, or TPS65735 equivalent, key selection considerations include its integrated H-bridge drive capability for stereo LC shutters, programmable LDO output for microcontroller supply, internal DPPM and thermal regulation, and compact 4.0 mm × 4.0 mm VSON-32 package optimized for space-constrained wearable optics.

Technical Context

The TPS65735 implements a system-level PMU architecture with independent power-path management: VIN powers both SYS and BAT simultaneously while regulating charge current based on system load. Its boost converter uses an internal MOSFET switch (RDSON = 0.8–1.2 Ω) and adjustable feedback (VREF = 1.20 V ±2.5%) to generate 8–16 V for driving LC shutter cells.

H-bridge operation is fully external-control-driven via six GPIOs (HBL1/HBL2, HBR1/HBR2, BST_EN), enabling precise timing of left/right shutter polarity reversal synchronized to 3D video frame rate. The LDO features dual-setpoint programming (2.2 V or 3.0 V) via VLDO_SET logic level, with dropout voltage ≤200 mV at 30 mA load.

Key Specifications

Pinout & Package

TPS65735 is housed in a 4.00 mm × 4.00 mm, 32-pin VSON (RSN) package with exposed thermal pad connected internally to AGND. The package supports high-density placement in compact 3D glasses frames and requires thermal pad soldering to PCB ground plane for reliable thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power management applications.

Compared with BQ24075RGER and TPS65720RSAT, the TPS65735 uniquely integrates full H-bridge drivers and a programmable LDO in one 4-mm² package-enabling true single-chip 3D shutter power management without compromise on drive capability or system integration.

Availability

TPS65735 is available at Aetrix Electronics and suitable for active shutter 3D glasses, wearable optical systems, and Li-ion powered wearables requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS65735 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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-reliability, application-optimized solutions for industrial, automotive, and consumer markets.

The TPS65735 belongs to TI's specialized power management unit (PMU) product line designed explicitly for active shutter 3D eyewear systems, combining battery charging, voltage boosting, analog switching, and system regulation in a single compact IC.

FAQ

What is the primary application target for the TPS65735?

The TPS65735 is purpose-built for active shutter 3D glasses, integrating all essential power functions-including Li-ion charging, 8–16 V boost generation, dual full H-bridge analog switches for left/right LC shutter control, and a programmable LDO-into a single 4.0 mm × 4.0 mm VSON package. Its feature set aligns precisely with the timing, drive strength, and space constraints of commercial 3D eyewear systems.

How does the TPS65735 manage battery charging safety?

The TPS65735 ensures battery safety through multiple integrated mechanisms: 4.20 V ±1% regulated charge voltage, three-phase charging (pre-charge, constant-current, constant-voltage), thermal regulation (75–95°C window), 105°C thermal shutdown with 20°C hysteresis, DPPM to prevent input overload, and battery short-circuit detection (VBAT(SC) = 1.6–2.0 V). These features collectively protect against overvoltage, overtemperature, and defective battery conditions during TPS65735 operation.

Can the TPS65735 drive LC shutter cells directly without external components?

Yes-the TPS65735 includes two fully integrated full H-bridge analog switches (LCLP/LCLN and LCRP/LCRN) with 20–40 Ω on-resistance per switch, enabling direct differential drive of left and right LC shutter cells. No external H-bridge drivers, gate resistors, or level shifters are required. Control is achieved via four dedicated GPIO inputs (HBL1/HBL2/HBR1/HBR2), allowing precise timing of polarity reversal synchronized to 3D frame rates.

What are the LDO output options and how are they selected on the TPS65735?

The TPS65735 LDO offers two fixed output voltages: 2.2 V (±3%) and 3.0 V (±3%). Selection is made solely by the logic level applied to the VLDO_SET pin-LOW (connected to DGND) sets 2.2 V; HIGH (connected to VSYS) sets 3.0 V. This eliminates external feedback resistors and simplifies design for microcontroller or RF module supply in TPS65735-based systems.

Does the TPS65735 support battery voltage monitoring for system firmware?

Yes-the TPS65735 provides a dedicated COMP pin that outputs a scaled-down version of the battery voltage (VBAT × 0.45–0.48), designed specifically for direct connection to an MCU's ADC or comparator input. This enables accurate battery state-of-charge estimation without external resistor dividers, reducing component count and improving measurement consistency across the 2.5–6.4 V VBAT operating range of the TPS65735.