TPS797

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50-mA, ultra-low-IQ, low-dropout voltage regulator with power good

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Data sheet

document-pdfAcrobat TPS797xx Ultra-Low IQ, 50-mA Low-Dropout Linear Regulators With Power Good Output in SC70 Package datasheet (Rev. J) PDF | HTML

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500-mA, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good Alternative product offering lower noise and higher accuracy.

TPS797

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Data sheet

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Product details

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

1.8

Iout (max) (A)

0.05

Output options

Fixed Output

Vout (max) (V)

1.8, 2.85, 3, 3.3

Vout (min) (V)

1.8

Fixed output options (V)

1.8, 2.85, 3, 3.3

Noise (µVrms)

600

Iq (typ) (mA)

0.001

Features

Power good

Thermal resistance θJA (°C/W)

231

Load capacitance (min) (µF)

0.47

Regulated outputs (#)

1

Accuracy (%)

4

Dropout voltage (Vdo) (typ) (mV)

105

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

1.8

Iout (max) (A)

0.05

Output options

Fixed Output

Vout (max) (V)

1.8, 2.85, 3, 3.3

Vout (min) (V)

1.8

Fixed output options (V)

1.8, 2.85, 3, 3.3

Noise (µVrms)

600

Iq (typ) (mA)

0.001

Features

Power good

Thermal resistance θJA (°C/W)

231

Load capacitance (min) (µF)

0.47

Regulated outputs (#)

1

Accuracy (%)

4

Dropout voltage (Vdo) (typ) (mV)

105

Operating temperature range (°C)

-40 to 85

SOT-SC70 (DCK)

5

4.2 mm² 2 x 2.1

50-mA Low-Dropout Regulator
Ultra-Low 1.2-µA Quiescent Current at 10 mA
5-Pin SC70 (DCK) Package
Integrated Power Good Output
Stable With Any Capacitor Greater Than 0.47 µF
Typical Dropout Voltage of 105 mV at 10 mA (TPS79733)
Over-Current Limitation
Operating Junction Temperature Range of –40°C to 85°C

50-mA Low-Dropout Regulator
Ultra-Low 1.2-µA Quiescent Current at 10 mA
5-Pin SC70 (DCK) Package
Integrated Power Good Output
Stable With Any Capacitor Greater Than 0.47 µF
Typical Dropout Voltage of 105 mV at 10 mA (TPS79733)
Over-Current Limitation
Operating Junction Temperature Range of –40°C to 85°C

The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.

The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.

The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.

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