TPS7A4533 Series

1.5-A, 20-V, ultra-low-dropout voltage regulator with reverse current protection & enable

Catalog

1.5-A, 20-V, ultra-low-dropout voltage regulator with reverse current protection & enable

Part	Operating Temperature [Max]	Operating Temperature [Min]	Protection Features	Voltage - Output (Min/Fixed)	Package / Case	Voltage - Input (Max) [Max]	Mounting Type	Output Configuration	Voltage Dropout (Max) [Max]	Supplier Device Package	Number of Regulators	Control Features	Output Type	PSRR	Current - Quiescent (Iq)	Current - Output
Texas Instruments TPS7A4533KTTR	125 °C	-40 °C	Over Current Over Temperature Reverse Polarity	3.3 V	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	20 V	Surface Mount	Positive	0.45 V	TO-263 (DDPAK-5)	1	Enable	1.81 mOhm	68 dB	1.5 mA	1.5 A
Texas Instruments TPS7A4533DCQT	125 °C	-40 °C	Over Current Over Temperature Reverse Polarity	3.3 V	SOT-223-6	20 V	Surface Mount	Positive	0.45 V	SOT-223-6	1	Enable	1.81 mOhm	68 dB	1.5 mA	1.5 A

Catalog

1.5-A, 20-V, ultra-low-dropout voltage regulator with reverse current protection & enable

Key Features

• Optimized for Fast Transient ResponseOutput Current: 1.5 AHigh Output Voltage Accuracy: 1% at 25°CDropout Voltage: 300 mVLow Noise: 35 µVRMS(10 Hz to 100 kHz)High Ripple Rejection: 68 dB at 1 kHz1-mA Quiescent CurrentNo Protection Diodes NeededControlled Quiescent Current in DropoutFixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 VAdjustable Output from 1.21 V to 20 V (TPS7A4501 Only)Less Than 1-µA Quiescent Current in ShutdownStable With 10-µF Ceramic Output CapacitorReverse-Battery ProtectionReverse Current ProtectionOptimized for Fast Transient ResponseOutput Current: 1.5 AHigh Output Voltage Accuracy: 1% at 25°CDropout Voltage: 300 mVLow Noise: 35 µVRMS(10 Hz to 100 kHz)High Ripple Rejection: 68 dB at 1 kHz1-mA Quiescent CurrentNo Protection Diodes NeededControlled Quiescent Current in DropoutFixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 VAdjustable Output from 1.21 V to 20 V (TPS7A4501 Only)Less Than 1-µA Quiescent Current in ShutdownStable With 10-µF Ceramic Output CapacitorReverse-Battery ProtectionReverse Current Protection

Description

The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications. Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage. The TPS7A45xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5 A of output current with a dropout voltage of 300 mV. Operating quiescent current is 1 mA, dropping to less than 1 µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In addition to fast transient response, the TPS7A45xx regulators have very-low output noise, which makes them ideal for sensitive RF supply applications. Output voltage range is from 1.21 to 20 V. The TPS7A45xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.