Texas Instruments TPS60111PWPG4

Overview

TPS60111PWPG4 from Texas Instruments is a regulated 5-V ±4% step-up charge pump DC/DC converter for battery-powered systems, delivering up to 150 mA output current from 2.7–5.4 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.

For engineers reviewing the TPS60111PWPG4 datasheet, TPS60111PWPG4 pinout, TPS60111PWPG4 application, or TPS60111PWPG4 equivalent, key selection criteria include its dual-mode operation (pulse-skip vs. constant-frequency), push-pull charge-pump architecture for low ripple, thermal-enhanced 20-pin TSSOP PowerPAD™ package, and load isolation during shutdown.

Technical Context

The TPS60111PWPG4 implements two synchronized single-ended charge pumps operating 180° out-of-phase in push-pull mode (COM = low) to sustain near-continuous output current transfer, minimizing voltage ripple. Its internal 1.22 V bandgap reference and error amplifier regulate output via on-chip feedback divider, supporting both constant-frequency (300 kHz typical, SKIP = low) and pulse-skip (low-quiescent-current) modes.

Switching control uses high-current MOSFETs (T11–T24) driven by a 50% duty-cycle oscillator; startup charges CO to 0.8×VIN before enabling regulation. ENABLE logic disables all switches and reduces supply current to 0.05 µA max, isolating load from input during shutdown.

Key Specifications

Pinout & Package

TPS60111PWPG4 is housed in a thermally enhanced 20-pin TSSOP PowerPAD™ (PWP) package with exposed thermal pad on bottom for improved heat dissipation. Pin numbering follows standard top-view orientation; PGND pins (9–12) and GND pins (1, 20) must be shorted on PCB for optimal grounding and thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS60111PWPG4, TPS60110PWP offers higher current headroom at identical footprint and control flexibility, while TPS60101PWP serves distinct 3.3 V applications with reduced complexity but no voltage adjustability.

Availability

TPS60111PWPG4 is available at Aetrix Electronics and suitable for battery-powered microprocessor systems, portable medical instruments, Li-ion to 5-V conversion, and handheld instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPS60111PWPG4 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 high-efficiency DC/DC conversion and battery management solutions.

The TPS601xx family was designed specifically for space-constrained, battery-powered applications demanding low-noise, inductorless 3.3 V or 5 V regulation-enabling compact, reliable power in PDAs, medical devices, and portable test equipment.

FAQ

What is the maximum output current capability of the TPS60111PWPG4?

The TPS60111PWPG4 delivers up to 150 mA output current when supplied from a 3 V input, maintaining 5 V ±4% regulation across the full 2.7–5.4 V input range and 0–150 mA load. Absolute maximum continuous output current is rated at 200 mA, but thermal limits and regulation accuracy constrain practical use to 150 mA under typical conditions.

How does the TPS60111PWPG4 achieve low output voltage ripple without inductors?

The TPS60111PWPG4 achieves <10 mV_PP output ripple using a push-pull dual charge-pump architecture: two single-ended charge pumps operate 180° out-of-phase, ensuring continuous current transfer to the output capacitor. This eliminates the large ripple inherent in single-stage charge pumps and avoids inductor-related EMI.

Can the TPS60111PWPG4 be synchronized to an external clock?

Yes-the TPS60111PWPG4 supports external clock synchronization via the SYNC and CLK pins. When SYNC is tied to IN, an external square-wave signal applied to CLK (up to 800 kHz) controls switching frequency, which runs at half the input clock rate. This feature enables EMI reduction through frequency dithering or alignment with system timing domains.

What is the purpose of the COM pin on the TPS60111PWPG4?

The COM pin selects charge-pump topology: logic low configures push-pull mode (two flying capacitors, low ripple), while logic high enables single-ended mode (one combined flying capacitor, smaller board area). This allows designers to optimize for either noise performance or layout density without changing external components.

Does the TPS60111PWPG4 provide load isolation during shutdown?

Yes-when ENABLE is driven low, the TPS60111PWPG4 disables all internal switches and disconnects the output from the input, placing the OUT pins in high-impedance state. Output leakage current is limited to 1 µA max, preventing battery drain or unintended powering of downstream circuitry during system sleep or off-state.