Texas Instruments TPS60111PWPR

Overview

TPS60111PWPR from Texas Instruments is a regulated 5-V ±4% step-up charge pump DC/DC converter delivering up to 150 mA output current from a 2.7-V to 5.4-V input (e.g., single Li-ion or three alkaline cells), with <10 mV_PP output ripple in constant-frequency mode and only four external ceramic capacitors required. It operates in push-pull topology for low-noise power delivery in space-constrained portable instrumentation.

For engineers reviewing the TPS60111PWPR datasheet, TPS60111PWPR pinout, TPS60111PWPR application, or TPS60111PWPR equivalent, key selection criteria include its 300 kHz internal switching frequency, dual-mode operation (pulse-skip vs. constant-frequency), thermal-enhanced 20-pin TSSOP PowerPAD™ package, and load-isolation during shutdown - all critical for battery-powered microprocessor systems requiring stable 5-V rail generation without inductors.

Technical Context

The TPS60111PWPR implements two synchronized, 180° out-of-phase single-ended charge pumps operating in push-pull mode when COM = low, enabling continuous output current transfer and minimizing voltage ripple. Its regulation loop uses an internal 1.22-V bandgap reference and on-chip resistive divider tied to the FB pin, eliminating external feedback components.

Mode selection is hardware-configured: SKIP pin selects between pulse-skip (low quiescent current at light loads) and constant-frequency (low ripple, fixed 300 kHz) operation; COM pin selects push-pull (low ripple) or single-ended (reduced capacitor count) topology. Internal MOSFET switches, start-up control circuitry, and thermal protection are integrated within the PWP package.

Key Specifications

Pinout & Package

The TPS60111PWPR is housed in a thermally enhanced 20-pin TSSOP PowerPAD™ (PWP) package with an exposed thermal pad on the bottom for PCB-level heat dissipation. The package measures 6.5 mm × 4.4 mm × 1.2 mm and is RoHS-compliant with NIPDAU lead finish (MSL Level-2).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar regulated charge pump applications.

Compared with TPS60111PWPR, the TPS60110PWP offers higher output current headroom in the same footprint, while the MAX680ESA+ provides a lower-pin-count, lower-cost alternative lacking programmable modes - making TPS60111PWPR optimal for designs balancing flexibility, noise performance, and space constraints.

Availability

TPS60111PWPR is available at Aetrix Electronics and suitable for battery-powered microprocessor systems, portable medical instruments, handheld instrumentation, and laptop peripheral interfaces requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS60111PWPR 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 and low-noise power solutions.

The TPS60111PWPR belongs to TI's regulated charge pump family designed specifically for inductorless, low-EMI 5-V rail generation in space- and noise-constrained portable electronics - emphasizing simplicity, reliability, and battery-life extension.

FAQ

What is the maximum continuous output current supported by the TPS60111PWPR?

The TPS60111PWPR delivers up to 150 mA output current when supplied from a 3-V input, as specified in the electrical characteristics table under IO(MAX). At higher input voltages (e.g., 5.4 V), the device remains capable of 150 mA but may require careful thermal management due to reduced power dissipation margin. Absolute maximum continuous output current is rated at 200 mA, though operation beyond 150 mA is not guaranteed across temperature and input voltage ranges per datasheet specifications.

Does the TPS60111PWPR require external feedback resistors to set the output voltage?

No, the TPS60111PWPR does not require external feedback resistors. It features an internal resistive divider and 1.22-V bandgap reference, with the FB pin internally configured to regulate the OUT pin to 5 V ±4%. The FB pin must be connected directly to the OUT pin near the load to ensure accurate regulation - no external resistor network is needed or supported.

How does the SKIP pin affect efficiency and output ripple in the TPS60111PWPR?

When SKIP = low, the TPS60111PWPR operates in constant-frequency mode (300 kHz), minimizing output ripple (<10 mV_PP) but drawing higher quiescent current (~60–90 µA). When SKIP = high, it enters pulse-skip mode, reducing quiescent current to ~2.8 mA at no load and extending battery life, though output ripple increases slightly and becomes variable-frequency. Both modes maintain 5-V regulation across load and line variations.

Can the TPS60111PWPR be used with a single flying capacitor instead of two?

Yes, the TPS60111PWPR supports single-ended operation when COM = high, allowing use of one combined flying capacitor (CF = C1F + C2F) instead of two separate ones. This reduces component count and board area but increases output voltage ripple compared to push-pull (COM = low) operation. The datasheet confirms this configuration in Figure 27 and Table 2, specifying that single-ended mode requires only one capacitor while maintaining full 150-mA output capability.

What thermal considerations apply to the TPS60111PWPR in its PWP package?

The TPS60111PWPR in the 20-pin TSSOP PowerPAD™ (PWP) package has a junction-to-ambient thermal resistance (R_θJA) of 178°C/W and a junction-to-case value (R_θJC) of 3.5°C/W when the exposed thermal pad is soldered to a large copper plane. At 70°C ambient, its maximum continuous power dissipation is 448 mW (derated from 700 mW at 25°C). To sustain 150 mA output reliably, the PCB must provide adequate thermal relief via the PowerPAD™ and minimize trace resistance on IN/OUT/PGND paths.