Texas Instruments TPS62200DBVT

Overview

TPS62200DBVT from Texas Instruments is a synchronous step-down DC-DC converter in a 5-pin SOT-23 package, delivering up to 300 mA output current with adjustable output voltage (0.7 V to VI), 1-MHz fixed-frequency PWM operation, and 15 µA typical quiescent current in power save mode. It powers low-voltage DSPs and processors in portable media players and smart phones using single-cell Li-Ion or 3-cell NiMH/NiCd batteries.

For engineers reviewing the TPS62200DBVT datasheet, TPS62200DBVT pinout, TPS62200DBVT application, or TPS62200DBVT equivalent, key selection criteria include input voltage range (2.5 V–6 V), feedback reference voltage (0.5 V), enable functionality, thermal resistance (220 °C/W), and compatibility with 4.7 µF input / 10 µF ceramic output capacitors.

Technical Context

The TPS62200DBVT implements a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation using small ceramic capacitors. Its dual-mode operation-PWM at medium-to-heavy loads and PFM in power save mode at light loads-maintains >90% efficiency across 0.1 mA to 300 mA load range.

Internally, it integrates P-channel and N-channel MOSFET switches with on-resistances of 670 mΩ (P-ch, 2.5 V) and 530 mΩ (N-ch, 3.6 V), undervoltage lockout (1.5 V threshold), soft-start (800 µs typical with 10 µF C_OUT), and dynamic voltage positioning for transient headroom.

Key Specifications

Pinout & Package

TPS62200DBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with standard lead pitch and gull-wing terminations. Thermal performance relies on PCB copper area connected to pin 2 (GND) as primary heat path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62231DBVR and MAX8640YETA+, the TPS62200DBVT provides unique adjustability via FB pin, proven voltage-mode stability with no external compensation, and seamless integration into battery-powered portable designs requiring both high light-load efficiency and flexible output configuration.

Availability

TPS62200DBVT is available at Aetrix Electronics and suitable for portable media players, smart phones, pocket PCs, and low-power DSP supplies requiring stable component supply across long production lifecycles and varying demand volumes.

Supply support for TPS62200DBVT 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 for portable electronics.

The TPS6220x product line was designed specifically for space- and battery-constrained portable applications, emphasizing ultra-low quiescent current, small solution size, and robust transient performance without external compensation.

FAQ

What is the minimum input voltage required for TPS62200DBVT to regulate a 1.2 V output at 200 mA?

The minimum input voltage depends on output voltage, load current, and P-channel MOSFET on-resistance. For TPS62200DBVT delivering 1.2 V at 200 mA, V_I(min) ≈ V_OUT + I_OUT × r_DS(ON)(max). With r_DS(ON) = 850 mΩ (2.5 V V_GS), V_I(min) ≈ 1.2 V + 0.2 A × 0.85 Ω = 1.37 V - but undervoltage lockout activates below 1.5 V, so practical minimum is 1.5 V. TPS62200DBVT maintains regulation down to this threshold in 100% duty cycle mode.

Can TPS62200DBVT be used with a 6.8 µH inductor instead of the recommended 10 µH?

Yes, TPS62200DBVT supports 6.8 µH inductors per TI's recommended components table. A 6.8 µH inductor increases peak inductor ripple current (~30% of I_OUT vs. ~20% for 10 µH), which slightly raises conduction losses but improves transient response speed. Sumida CDRH3D16-6R8 is validated for use with TPS62200DBVT and maintains >92% efficiency at 200 mA with 3.6 V input.

Does TPS62200DBVT require an external soft-start capacitor?

No, TPS62200DBVT integrates a digital soft-start circuit that ramps switch current in discrete steps (60/120/240/480 mA), eliminating need for external timing capacitors. Startup time is determined by output capacitance and load; with 10 µF C_OUT and 200 mA load, TPS62200DBVT reaches regulation in ~800 µs. Adding external capacitance does not alter this behavior.

How does the feedback pin (FB) of TPS62200DBVT differ from fixed-output variants like TPS62202DBVT?

TPS62200DBVT disables its internal resistor divider and routes the FB pin directly to the error amplifier, enabling user-defined output voltages via external R1/R2. In contrast, TPS62202DBVT ties FB internally to set 1.8 V and leaves the FB pin unconnected. Using TPS62200DBVT with a fixed 1.8 V divider yields identical regulation but retains flexibility for future voltage changes without PCB revision.

Is TPS62200DBVT compatible with tantalum output capacitors?

Yes, TPS62200DBVT supports tantalum output capacitors per TI's recommended components table (e.g., AVX TAJC106K016RNJ). However, ceramic capacitors (e.g., Taiyo Yuden JMK212BJ106MG) are preferred due to lower ESR, smaller size, and absence of bias voltage derating. Tantalum use requires verifying surge current ratings and applying appropriate derating for reliability in portable applications.