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Product Information
Features
1.5-A Low-Dropout Regulator With Enable
Available in Fixed and Adjustable (1.2-V to 5.5-V) Output Versions
High PSRR (49 dB at 10 kHz)
Ultralow Noise (48 µVRMS, TPS78630)
Fast Start-Up Time (50 µs)
Stable With a 1-µF Ceramic Capacitor
Excellent Load/Line Transient Response
Very Low Dropout Voltage (390 mV at Full Load, TPS78630)
3 × 3 SON PowerPAD™, 6-Pin SOT223 and 5-Pin DDPAK Package
APPLICATIONS
RF: VCOs, Receivers, ADCs
Audio
Bluetooth®, Wireless LAN
Cellular and Cordless Telephones
Handheld Organizers, PDAs
PowerPAD is a trademark of Texas Instruments Inc. Bluetooth is a registered trademark of Bluetooth SIG, Inc. All other trademarks are the property of their respective owners.
Description
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 DDPAK-5 packages. Each device in the family is stable, with a small 1-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 390 mV at 1.5 A). Each device achieves fast start-up times (approximately 50 µs with a 0.001 µF bypass capacitor) while consuming very low quiescent current (265 µA, typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA.
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