Texas Instruments TPS60203DGSR

Overview

TPS60203DGSR from Texas Instruments is a regulated 3.3 V, 50 mA charge pump DC/DC converter optimized for battery-powered portable electronics. It operates from a 1.6 V to 3.6 V input, delivers <5 mV_PP output ripple using push-pull topology, and integrates a power-good (PG) detector with 90% V_OUT trip threshold - enabling reliable system power sequencing in handheld medical devices and low-power microprocessor systems.

For engineers reviewing the TPS60203DGSR datasheet, TPS60203DGSR pinout, TPS60203DGSR application, or TPS60203DGSR equivalent, key selection criteria include its 50 mA continuous output current at 2 V input, 35 µA quiescent current, 0.05 µA shutdown current, MSOP-10 package footprint, and PG open-drain output behavior requiring external pullup - all critical for space-constrained, long-battery-life designs.

Technical Context

The TPS60203DGSR implements a dual single-ended charge pump in push-pull phase (180° offset) to sustain near-constant output current and minimize ripple. Its regulation uses pulse-skip mode below 7 mA load and constant-frequency mode above, with internal MOSFET gate drive dynamically adjusted by an error amplifier referencing a 1.18 V bandgap.

It features integrated power-good detection (PG pin), auto-discharge of the output capacitor during shutdown, and external clock synchronization capability up to 800 kHz applied to the EN pin - enabling EMI-sensitive timing alignment without inductors.

Key Specifications

Pinout & Package

TPS60203DGSR is housed in a 10-pin MSOP (DGS) package measuring 3.00 mm × 3.00 mm, with exposed thermal pad (not electrically connected). Pin numbering follows standard MSOP top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS60203DGSR, TPS60201DGSR offers 2× output current in identical packaging for seamless upgrade, while TPS60123DGSR trades size for efficiency and thermal margin - making TPS60203DGSR optimal for cost- and space-sensitive 50 mA applications where its 35 µA quiescent current and 0.05 µA shutdown deliver longest battery hold time.

Availability

TPS60203DGSR is available at Aetrix Electronics and suitable for handheld medical instruments, portable audio devices, battery-powered microprocessor systems, and backup-battery boost converters requiring stable component supply with consistent parametric performance and long-term lifecycle support.

Supply support for TPS60203DGSR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.

The TPS6020x product line was designed specifically for ultra-low-power, space-constrained battery-operated devices requiring regulated 3.3 V from 2-cell alkaline/NiMH sources - emphasizing minimal external components, low EMI, and intelligent power sequencing.

FAQ

What is the maximum continuous output current specification for the TPS60203DGSR?

The TPS60203DGSR is rated for a maximum continuous output current of 50 mA when supplied with a 2 V input, as confirmed in the Device Comparison Tables (Table 1) and Electrical Characteristics (Section 7.5). This value is guaranteed across the full operating temperature range of –40°C to 85°C and represents the minimum sustained current under worst-case conditions - not a typical or peak value.

Does the TPS60203DGSR include a low-battery detector function?

No, the TPS60203DGSR does not implement a low-battery detector. Per the datasheet Device Comparison Table, only TPS60200 and TPS60202 include the LBI/LBO function. For TPS60203DGSR, the LBI pin is unused and must be connected to GND; the device instead provides a power-good (PG) output that asserts when V_OUT reaches ≥90% of 3.3 V.

What external components are required to operate the TPS60203DGSR?

The TPS60203DGSR requires exactly four external ceramic capacitors: one 2.2 µF input capacitor (Ci), two 1 µF flying capacitors (C1 and C2), and one 2.2 µF output capacitor (Co). All must be X5R or X7R dielectric types. No resistors, inductors, or additional ICs are needed - enabling a complete 3.3 V regulator solution in under 12 mm² board area.

How does the TPS60203DGSR behave during shutdown?

When the EN pin is driven low, the TPS60203DGSR enters shutdown mode with 0.05 µA supply current, isolates the input from the output, and actively discharges the output capacitor (Co) through an internal transistor until V_OUT falls below 0.5 V within 0.6 ms. This ensures the downstream system reaches a known, safe power-off state without residual voltage.

Can the TPS60203DGSR be synchronized to an external clock signal?

Yes, the TPS60203DGSR supports external clock synchronization via its EN pin. An AC-coupled square wave (400–800 kHz, 30–70% duty cycle) applied to EN overrides the internal oscillator and locks the charge pump switching frequency to half the external clock rate. The device disables if EN remains low for >10 µs - ensuring robust fail-safe behavior.