Texas Instruments TPS61087DRCRG4

Overview

TPS61087DRCRG4 from Texas Instruments is a high-frequency, current-mode boost DC-DC converter IC with integrated 3.2-A/0.13-Ω N-channel MOSFET, supporting 2.5–6-V input and up to 18.5-V output for portable power rails. It delivers 500 mA at 15 V in typical 1.2-MHz operation and features selectable 650-kHz/1.2-MHz switching, adjustable soft-start, and thermal shutdown.

For engineers reviewing the TPS61087DRCRG4 datasheet, TPS61087DRCRG4 pinout, TPS61087DRCRG4 application, or TPS61087DRCRG4 equivalent, key selection criteria include input voltage range (2.5–6 V), peak switch current (3.2 A min), feedback reference (1.238 V), frequency select logic (FREQ = GND or VIN), and QFN-10 thermal pad layout requirements.

Technical Context

The TPS61087DRCRG4 operates in current-mode control with quasi-constant frequency and adaptive off-time for superior line/load transient response. Its external compensation network (COMP pin) enables stability optimization across varying output capacitance and load conditions.

It supports dual switching frequencies: 650 kHz (FREQ = GND) for higher efficiency and 1.2 MHz (FREQ = VIN) for smaller magnetics and faster transient response. The device transitions between continuous conduction mode (CCM), discontinuous conduction mode (DCM), and pulse-skipping mode depending on load level.

Key Specifications

Pinout & Package

TPS61087DRCRG4 uses a 10-pin VSON (DRC) package, 3.0 mm × 3.0 mm × 1.0 mm, with exposed thermal pad (Pin 4, AGND) for PCB-level heat dissipation. Pin pitch is 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter applications.

Compared with TPS61087DRCRG4, TPS61088RHLR offers higher current headroom and bandwidth at the cost of increased complexity and layout sensitivity, while MAX17222ETA+ trades configurability for integration and miniaturization-making each suitable for distinct power density vs. flexibility priorities.

Availability

TPS61087DRCRG4 is available at Aetrix Electronics and suitable for handheld GPS receivers, digital still cameras, TFT LCD bias supplies, and DSL modem line drivers requiring stable component supply, long-term lifecycle support, and TI-qualified automotive-grade traceability.

Supply support for TPS61087DRCRG4 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 ICs, with decades of expertise in high-efficiency DC-DC conversion.

The TPS61087 product line is designed for portable and battery-powered applications demanding high-voltage boost capability from low-input sources, emphasizing thermal robustness, layout flexibility, and precision regulation.

FAQ

What is the recommended inductor value for TPS61087DRCRG4 operating at 1.2 MHz?

For 1.2-MHz operation, TI recommends a 3.3-μH shielded power inductor with ≥4.2-A saturation current (e.g., Wurth 7447789003). This value balances size, efficiency (~92% at 5-V→15-V/500-mA), and transient response. Inductor DCR should be ≤30 mΩ to minimize conduction loss, and core material must support high-frequency operation to limit AC losses.

How does the FREQ pin affect TPS61087DRCRG4 performance?

The FREQ pin directly selects switching frequency: tying it to GND sets 650 kHz (higher efficiency, larger inductors), while tying it to IN sets 1.2 MHz (smaller passives, faster transient response, slightly lower efficiency). Frequency shift is monotonic and confirmed across input voltage (2.5–6 V) and load (1–1000 mA); no external components are needed beyond the logic connection.

Can TPS61087DRCRG4 regulate output voltage below 5 V?

Yes - the TPS61087DRCRG4 regulates based on its 1.238-V internal reference and external resistor divider on the FB pin. Output voltage is calculated as V_OUT = 1.238 V × (1 + R1/R2). With appropriate R1/R2 values (e.g., R2 = 18 kΩ, R1 = 200 kΩ), outputs as low as 5 V are fully supported; the minimum practical output is limited only by feedback divider noise and layout, not by IC architecture.

What is the purpose of the thermal pad on the TPS61087DRCRG4 package?

TPS61087DRCRG4's exposed thermal pad (Pin 4, AGND) serves as the primary heat dissipation path from the silicon die to the PCB. It must be soldered to a solid copper pour connected to AGND and/or PGND with ≥4 thermal vias (0.3-mm diameter) to an inner ground plane. Proper thermal pad connection reduces junction-to-board thermal resistance to 29.6°C/W, enabling reliable 500-mA operation at 85°C ambient without derating.

Does TPS61087DRCRG4 support output short-circuit protection?

No - the TPS61087DRCRG4 includes overcurrent protection via peak switch current limiting (3.2 A min), thermal shutdown, and output overvoltage protection (OVP), but it lacks dedicated short-circuit foldback or hiccup mode. During sustained output short, the device cycles thermally (shut down at 150°C, restart at ~136°C), which may cause visible output oscillation. External protection (e.g., polyfuse or current-limiting MOSFET) is recommended for systems requiring robust short-circuit immunity.