STEVAL-ISB034V1 STMicroelectronics

S T E VA L - I S B 0 3 4 V 1 Evaluation board for the LDBL20 high PSRR, miniaturized 200 mA LDO Data brief Description The STEVAL-ISB034V1 board features the LDBL20 high performance linear voltage regulator, configured to convert a 2.85 V to 5.5 V DC input voltage into a precise and stable 2.5 V output voltage. Only two small ceramic capacitors are needed to implement the linear regulator solution. The very low dropout LDBL20 voltage regulator features high PSRR, low quiescent current and the minute ST Stamp chip-scale package, with a footprint of only 0.47 x 0.47 mm. It is designed for low power battery-operated equipment like smartphones, tablets and Features wearable devices. Output current: 200 mA Logic controlled electronic shutdown High PSRR 80 dB 1 kHz 50 dB 100 kHz Quiescent current: 20 A typ. at no load 0.03 A typ. in off mode 2.5 V +/- 2% output voltage Other voltage options available on request ST Stamp 0.47 x 0.47 mm bumpless CSP RoHS compliant February 2016 DocID029002 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISB034V1 1 Schematic diagram Figure 1: STEVAL-ISB034V1 circuit schematic Vin f Vin s Vout s Vout f CN1 GND LDBL 20D-25R 7 Vout s U1 6 Vout f 5 Vin Vout Vin s 4 En GND Vin f C2 3 C1 EN 1F 2 1F GND 1 Enable GND GND GND GSPG1102161430SG 2/4 DocID029002 Rev 1