TPS60403DBVR

TPS60403DBVR is the tape-and-reel SOT-23-5 ordering code for the Texas Instruments TPS60403 unregulated charge-pump voltage inverter, listed by TI as ACTIVE. It runs from a 1.8 V to 5.25 V supply, delivers up to 60 mA output, draws 425 µA typical and 700 µA maximum quiescent current, oscillates at 150 kHz to 300 kHz (250 kHz typical), and shows a typical output resistance of 12 Ω (15 Ω maximum), needing only flying and output capacitors to generate a negative rail. The selection point is a negative supply without an inductor: op-amp rails, LCD bias and RS-232-style interfaces in battery equipment get their minus rail from a five-pin device and two capacitors, at board areas an inductive inverting converter cannot match. Selection advice: the output is unregulated and follows the input minus conversion losses, so budget the negative rail tolerance at the 60 mA load point using the output-resistance figures above; if the load needs a stiff regulated negative rail, pair the charge pump with a small negative LDO as the datasheet applications show. Parameters verified against the TI TPS60403 datasheet SLVS324 (available options table and electrical characteristics).