Texas Instruments TPS63700DRCT

Overview

TPS63700DRCT from Texas Instruments is a fixed-frequency PWM inverting DC/DC converter generating negative output voltages down to –15 V, supporting up to 360 mA output current at 84% peak efficiency, with 2.7 V to 5.5 V input range and internal 1.4-MHz oscillator - used for biasing OLED display panels and portable instrumentation requiring compact, isolated negative rails.

For engineers reviewing the TPS63700DRCT datasheet, TPS63700DRCT pinout, TPS63700DRCT application, or TPS63700DRCT equivalent, key selection criteria include adjustable negative output voltage (–2 V to –15 V), integrated 1000-mA switch current limit, thermal shutdown, –19-V overvoltage protection, and compatibility with ceramic output capacitors and low-ESR inductors in space-constrained designs.

Technical Context

The TPS63700DRCT implements a buck-boost topology operating in continuous conduction mode (CCM) at medium-to-heavy loads and transitions to discontinuous conduction mode (DCM) at light loads. Its control loop uses multiple feed-forward sensing of VIN, VOUT, and switch voltage drop to dynamically adjust duty cycle.

It features internal compensation with external 4.7-nF capacitor on COMP pin, reference voltage output (VREF = 1.213 V) for feedback divider biasing, and dedicated PS_GND and GND pins for separation of power and control ground paths - enabling stable regulation under varying load and input conditions.

Key Specifications

Pinout & Package

TPS63700DRCT is housed in a thermally enhanced 3-mm × 3-mm VSON-10 package with exposed PowerPAD™ for improved heat dissipation. The package supports solder reflow per JEDEC J-STD-020 and has R_θJA = 41.2°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar inverting DC/DC converter applications.

Compared with MAX774CPA+ and LT3467EDD, the TPS63700DRCT offers the widest adjustable output range (–2 V to –15 V), highest output current (360 mA), and integrated load disconnect - making it optimal for space-constrained, multi-voltage portable systems requiring both flexibility and reliability.

Availability

TPS63700DRCT is available at Aetrix Electronics and suitable for OLED display biasing, portable instrumentation, industrial sensor interfaces, and medical wearable power systems requiring stable component supply across long production cycles.

Supply support for TPS63700DRCT 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 over 90 years of innovation in high-reliability electronic components.

The TPS63700DRCT belongs to TI's high-efficiency inverting DC/DC converter product line, designed specifically for portable and battery-powered applications needing compact, programmable negative voltage rails without transformer-based isolation.

FAQ

What is the minimum input voltage required for the TPS63700DRCT to start regulation?

The TPS63700DRCT incorporates an undervoltage lockout (UVLO) with a nominal threshold of 2.35 V. Regulation begins only when VIN rises above this level; below 2.1 V, the device remains disabled. This ensures stable startup from partially discharged Li-ion cells while preventing erratic behavior at marginal supply levels. The TPS63700DRCT resumes normal operation once VIN exceeds the UVLO threshold and EN is asserted.

Can the TPS63700DRCT generate –15 V output from a 3.3-V input?

Yes, the TPS63700DRCT supports –15 V output from 3.3 V input, but maximum load current is reduced to approximately 120 mA due to duty-cycle and switch-current limitations. At VIN = 3.3 V and VOUT = –15 V, the device operates near its maximum duty cycle (87.5%) and relies on the 1000-mA internal current limit to sustain output. Efficiency drops to ~68%, and thermal management becomes critical - verified in Figure 6 of the SLVS530D datasheet. The TPS63700DRCT remains functional but requires careful layout and heatsinking.

How does the TPS63700DRCT handle load transients?

The TPS63700DRCT responds to load transients via its fixed-frequency PWM control with internal feed-forward compensation. For a step from 45 mA to 150 mA at –5 V, output voltage deviation is limited to ±100 mV with 2-ms settling time (Figure 11). The 4.7-nF COMP capacitor and 10-pF feed-forward cap across R3 ensure loop stability. Transient recovery depends on output capacitance: ≥4×4.7 μF ceramic minimizes droop. The TPS63700DRCT maintains regulation without external intervention across –40°C to +85°C.

Is the TPS63700DRCT RoHS-compliant and lead-free?

Yes, the TPS63700DRCT is RoHS-compliant and lead-free per TI's packaging standards. It meets JEDEC J-STD-020 moisture sensitivity level 2a (MSL-2a) and is qualified for Pb-free solder reflow up to 260°C peak. The VSON-10 package uses matte tin (Sn) plating on terminals, and TI provides full material declarations and conflict minerals reporting. The TPS63700DRCT is suitable for export to EU, China, Korea, and other RoHS-regulated markets.

What external components are mandatory for basic TPS63700DRCT operation?

Mandatory external components for the TPS63700DRCT include: (1) 10-μF ceramic input capacitor (C1) between IN and PS_GND; (2) 4.7-μH power inductor (L1) between IN and SW; (3) Schottky diode (D1) from SW to OUT; (4) 4×4.7-μF ceramic output capacitors (C4–C7) from OUT to GND; (5) 4.7-nF capacitor (C6) from COMP to GND; and (6) resistor divider (R2/R3) from OUT to VREF to set VOUT. The TPS63700DRCT will not regulate without these elements.