RT9024

RT9020 : Pin Number 1 VIN 2G 3 EN 4 SS 5 VO UT ND Pin Name Supply Input. Common Ground. Enable Input Logic, Active High. When the EN goes to a logic low, the device will be shutdown. Soft Start. Regulator Output. Pin Function Function Block Diagram SS EN R POR OTP V REF Current Limit VIN + MOS Driver VOUT GND www.richtek.com 2 DS9020-03 June 2009 RT9020 Absolute Maximum Ratings (Note 1) 6V 6V 0.4W 0.3W 250°C/W 333°C/W 260°C 150°C −65°C to 150°C 2kV 200V Supply Input Voltage -----------------------------------------------------------------------------------------------------EN Input Voltage -------------------------------------------------------------------------------------------------------.

RT9022 : The RT9022 is designed for positive CCD bias applications with critical performance and space requirements. The RT9022 performance is optimized for battery-powered systems to deliver low noise and low quiescent current and with soft start function. The RT9022 also works well with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications and consumes less than 1μA in shutdown mode. The other features include ultra low dropout voltage, high output accuracy, and current limiting protection. The part is available in the SOT-23-6 and SC-70-6 packages. Ordering Information RT9022 Package Type E : SOT-23-6 U6 : SC-70-6 Lead Plating System P : Pb Free G : Gr.

RT9025 : The RT9025 is a high performance positive voltage regulator designed for use in applications requiring very low Input voltage and extremely low dropout voltage at up to 2A(Peak). It operates with a VIN as low as 1V and VDD voltage 3V with programmable output voltage as low as 0.8V. The RT9025 features ultra low dropout that is ideal for applications where VOUT is very close to VIN. Additionally, it has an enable pin to further reduce power dissipation while shutdown and provides excellent regulation over variations in line, load and temperature. The RT9025 provides a power good signal to indicate if the voltage level of Vo reaches 90% of its rating value. The RT9025 is available in the SOP-8.

RT9026 : RT9026 is a 3A sink/source tracking termination regulator. It is specifically designed for low-cost and low-external component count systems. The RT9026 possesses a high speed operating amplifier that provides fast load transient response and only requires 20μF of ceramic output capacitance. The RT9026 supports remote sensing functions and all features required to power the DDRI/II/III and low-power DDRIII/DDRIV VTT bus termination according to the JEDEC specification. In addition, the RT9026 includes integrated sleep-state controls placing VTT in High-Z in S3 (suspend to RAM) and soft-off for VTT and VTTREF in S5 (shutdown). The RT9026 is available in the thermal efficient package SOP-8 (Ex.

RT9027A : The RT9027A/B is a high performance positive voltage regulator designed for very low dropout voltage up to 0.5 Amps. The VSET voltage must be larger than 1V to guarantee that VOUT is 1.6 times of VSET. When VSET is less than 1V, the IC will be shutdown. The FON pin turns VOUT to fullyon when FON is given low. For RT9027B (EN version), FON pin is equivalent to EN pin. The RT9027A/B provides excellent regulation over variations in line, load and temperature. The RT9027A/B is available in the SOP-8 package. Features z z z z z VOUT Follows 1.6 Times of VSET 150mV Dropout @ 0.5A Over Current and Over Temperature Protection FON Pin Turns VOUT Fully On RoHS Compliant and 100% Lead (Pb)-Free Appl.

RT9027B : The RT9027A/B is a high performance positive voltage regulator designed for very low dropout voltage up to 0.5 Amps. The VSET voltage must be larger than 1V to guarantee that VOUT is 1.6 times of VSET. When VSET is less than 1V, the IC will be shutdown. The FON pin turns VOUT to fullyon when FON is given low. For RT9027B (EN version), FON pin is equivalent to EN pin. The RT9027A/B provides excellent regulation over variations in line, load and temperature. The RT9027A/B is available in the SOP-8 package. Features z z z z z VOUT Follows 1.6 Times of VSET 150mV Dropout @ 0.5A Over Current and Over Temperature Protection FON Pin Turns VOUT Fully On RoHS Compliant and 100% Lead (Pb)-Free Appl.