Texas Instruments TPS62770YFPR

Overview

TPS62770 from Texas Instruments is an ultra-low-power multi-rail DC/DC converter integrating a 370 nA quiescent current step-down regulator (1.0–3.0 V, 300 mA), a slew-rate-controlled load switch, and a dual-mode step-up converter (12 V fixed or up to 15 V adjustable, 30 mA). It serves as a single-chip power management solution for battery-powered wearable systems with strict size and efficiency constraints.

For engineers reviewing the TPS62770 datasheet, TPS62770 pinout, TPS62770 application, or TPS62770 equivalent, this page delivers verified functional roles, validated pin assignments, confirmed operating modes (voltage-regulated vs. current-regulated step-up), real-world startup timing (1–5 ms delay, 700–1200 µs softstart), and precise thermal metrics (R_θJA = 90.6 °C/W) - all critical for low-power wearable BOM consolidation and layout-sensitive designs.

Technical Context

The TPS62770 implements TI's DCS-Control™ topology in its step-down section, enabling seamless PFM/PWM mode transition, sub-2.5% output voltage accuracy across load and line, and fast transient response without external compensation. Its integrated high-impedance VSEL1–VSEL3 logic enables dynamic output voltage selection among eight discrete levels (1.0 V to 3.0 V) during operation.

The step-up section operates in two mutually exclusive modes selected by the BM pin: constant-voltage mode (0.8 V FB reference, 12 V fixed or resistor-programmable up to 15 V) or constant-current mode (200 mV FB reference with PWM-to-analog scaling at EN2/PWM). Both modes include internal isolation MOSFET disconnect, 17.7 V overvoltage protection, and short-circuit current limiting.

Key Specifications

Pinout & Package

TPS62770 uses a 16-pin DSBGA (YFP) package with 0.4 mm pitch and nominal body size 1.58 mm × 1.58 mm. All pins are surface-mount ball terminals arranged in 4×4 grid (A1–D4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62770, TPS62740DSSR offers marginally lower I_Q but omits critical high-voltage and load-switching capability, while TPS61291DRVR provides compact boost functionality but forces system-level partitioning of power rails - neither delivers the consolidated, footprint-minimized, dual-domain power architecture of the TPS62770.

Availability

TPS62770 is available at Aetrix Electronics and suitable for wearable electronics, medical sensor patches, and compact PMOLED display modules requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for TPS62770 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 ultra-low-power design for portable and medical electronics.

The TPS62770 belongs to TI's "Ultra-Low-Power Power Management" product line, engineered specifically for battery-operated wearables where simultaneous multi-rail generation, nanoscale quiescent current, and minimal PCB footprint are non-negotiable design requirements.

FAQ

What is the minimum input voltage required for the TPS62770 to start regulating?

The TPS62770 enters regulation when VIN rises above the undervoltage lockout (UVLO) turn-on threshold of 2.1 V (typical). Below 1.9 V (typical UVLO turn-off), the device shuts down completely and activates internal discharge paths on VO1 and LOAD. This ensures reliable cold-start behavior from partially discharged coin cells or Li-ion batteries in wearable use cases.

Can the TPS62770 simultaneously power a 1.8 V MCU and a 12 V PMOLED display?

Yes. The TPS62770 is explicitly designed for this dual-rail scenario: its step-down converter delivers 1.8 V at up to 300 mA to the MCU (VO1), while its step-up converter provides a fixed 12 V output (by tying FB to VIN) to the PMOLED anode (VO2). Both rails operate independently with dedicated grounds (GND1/GND2) and require no external feedback components.

How does the TPS62770 handle output discharge during shutdown?

When EN1 is pulled low, the TPS62770 actively discharges both VO1 and LOAD pins to GND through internal switches (R_DS(ON) ≤ 65 Ω). Similarly, pulling CTRL low discharges only the LOAD pin. This prevents residual voltage on bypass capacitors, eliminating boot-up glitches in downstream circuits - a critical feature for reliable restart in energy-harvesting or intermittent-power wearables.

Is the TPS62770 compatible with dynamic voltage scaling (DVS) for MCU performance tuning?

Yes. The TPS62770 supports real-time DVS via its VSEL1–VSEL3 pins, which can be reconfigured during operation to change VO1 output among eight discrete voltages (1.0 V to 3.0 V). This allows firmware to scale MCU core voltage in lockstep with clock frequency, reducing active power consumption without hardware modification or external DACs.

What protection features does the TPS62770 include for the step-up output?

The TPS62770 integrates multiple protections on VO2: output overvoltage protection triggers at 17.7 V (with 800 mV hysteresis), internal isolation MOSFET disconnects VO2 from VIN during shutdown or overload, and short-circuit current limiting activates when VOUT drops below 4 V. These ensure robust operation in fault-prone wearable environments where accidental shorts or ESD events may occur.