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The TPS795xx family of low-dropout (LDO) low-power linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline, SOT223-6, package.Each device in the family is stable with a small 1-F ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example 110 mV at 500 mA). Each device achieves fast start-up times (approximately 50 s with a 0.001-F bypass capacitor) while consuming very low quiesc ent current (265 A typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 A. The TPS79530 exhibits 3.0 V output with a 0.1-F bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR and low noise features, as well as the fast response time.
TPS79518 Maximum Ratings
UNIT
VIN range
-0.3 V to 6 V
VEN range
-0.3 V to VIN + 0.3 V
VOUT range
6 V
Peak output current
Internally limited
ESD rating, HBM
2 kV
ESD rating, CDM
500 V
Continuous total power dissipation
See Dissipation Rating Table
Junction temperature range, TJ
-40 to 150
Storage temperature range, Tstg
-65 to 150
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied
TPS79518 Features
` 500-mA Low-Dropout Regulator With Enable ` Available in 1.6-V, 1.8-V, 2.5-V, 3-V, 3.3-V, and Adjustable (1.2-V to 5.5-V) ` High PSRR (50 dB at 10 kHz) ` Ultralow Noise (33 VRMS, TPS79530) ` Fast Start-Up Time (50 s) ` Stable With a 1-F Ceramic Capacitor ` Excellent Load/Line Transient Response ` Very Low Dropout Voltage (110 mV at Full Load, TPS79530) ` 6-Pin SOT223-6 Package
TPS79518 Typical Application
· RF: VCOs, Receivers, ADCs · Audio · Bluetooth™, Wireless LAN · Cellular and Cordless Telephones · Handheld Organizers, PDAs