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The TPS786xx 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 small outline, SOT223-6 and 5-pin DDPAK packages. Each device in the family is stable, with a small 1- µ F ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (e.g., 390 mV at 1.5 A). Each device achieves fast start-up times (approximately50 µ s with a 0.001 µ F bypass capacitor) while consuming very low quiescent curren (265 µA typical). Moreover,when the device is placed in standby mode, the supply currentis reduced to less than1µA. The TPS78630 exhibits approximately4 µV RMS of output voltage at 3.0 V output noise with a 0.1 µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR, low noise features, andthefast response time.
TPS78633 Maximum Ratings
VALUE
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 Ratings table
Junction temperature range,TJ
-40°C to 150°C
Storage temperature range,Tstg
-65°C to 150°C
TPS78633 Features
• 1.5 A Low -Dropout Regulator With Enable • A vailable in1.8-V,2.5-V 2.8-V, 3-V, 3.3-V, and Adjustable (1.2-Vto5.5-V) • High PSRR ( 49 dB at 10 kHz) • Ultralow Noise (48 µVRMS, TPS79630) • Fast Start-Up Time(50 µs) • Stable Witha 1-µF Ceramic Capacitor • Excellent Load/Line Transient Response • Very Low Dropout Voltage( 390 mV at Full Load, TPS78630) • 6-Pin SO T223-6 and 5-Pin DDPAK Package
TPS78633 Typical Application
RF: VCOs, Receivers, ADCs Audio Bluetooth™,Wireless LAN Cellular and Cordless Telephones Handheld Organizers, PDAs