TPS7233Q

Input voltage range, V_I, PG, SENSE, EN  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 11 V
Output current, I_O   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .  1.5 A
Continuous total power dissipation  . . . . . . . . . . . . . . .  See Dissipation Rating Tables 1 and 2
Operating virtual junction temperature range, T_J   . . . . . . . . . . . . . . . . . . . ... 55^oC to 150 ^oC
Storage temperature range, T_stg   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65^oCto 150 ^oC
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds  . . . . . . . . . . . . . . . . . .  260^oC

The TPS7233Q low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators TPS7233Q feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS7233Q devices are ideal for cost-sensitive designs and for designs where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low maximum of 85 mV at 100 mA of load current (TPS7250) and is directly proportional to theload current (see Figure 1). Since the PMOS passelement is a voltage-driven device, the quiescent current of TPS7233Q  is very low (300 mA maximum) and is stable over the entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system battery operating life. The TPS7233Q also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 0.5 mA maximum at TJ = 25°C. Other features include a power-good function that reports low output voltage and may be used to implement a power-on reset or a low-battery indicator. TheTPS7233Q is offered in 2.5-V, 2.75-V§, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version).
§ This TPS7233Q is in the product preview stage of development. Please contact the local TI sales office for availability.