TPS72

ACTIVE

250-mA, 10-V, low-dropout voltage regulator with power good & enable

A newer version of this product is available

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TPS7A25 ACTIVE 300-mA, 18-V, ultra-low-IQ, high-accuracy, adjustable low-dropout voltage regulator with power good Alternative product with higher accuracy, ultra-low-IQ and better dropout voltage in a 2x2 WSON package

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 10 Vin (min) (V) 3 Vout (max) (V) 9.75 Vout (min) (V) 1.2 Fixed output options (V) 2.5, 3, 3.3, 4.8, 5 Noise (µVrms) 190 Iq (typ) (mA) 0.18 Thermal resistance θJA (°C/W) 114 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 8 Dropout voltage (Vdo) (typ) (mV) 560 Operating temperature range (°C) -55 to 150
Output options Adjustable Output, Fixed Output Iout (max) (A) 0.25 Vin (max) (V) 10 Vin (min) (V) 3 Vout (max) (V) 9.75 Vout (min) (V) 1.2 Fixed output options (V) 2.5, 3, 3.3, 4.8, 5 Noise (µVrms) 190 Iq (typ) (mA) 0.18 Thermal resistance θJA (°C/W) 114 Rating Catalog Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 2 PSRR at 100 KHz (dB) 8 Dropout voltage (Vdo) (typ) (mV) 560 Operating temperature range (°C) -55 to 150
PDIP (P) 8 92.5083 mm² 9.81 x 9.43 SOIC (D) 8 29.4 mm² 4.9 x 6 TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V Fixed-Output and Adjustable Versions
  • Dropout Voltage <85 mV Max at
    IO = 100 mA (TPS7250)
  • Low Quiescent Current, Independent of Load, 180 uA Typ
  • 8-Pin SOIC and 8-Pin TSSOP Package
  • Output Regulated to ±2% Over Full Operating Range for Fixed-Output Versions
  • Extremely Low Sleep-State Current,
    0.5 uA Max
  • Power-Good (PG) Status Output
  • Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V Fixed-Output and Adjustable Versions
  • Dropout Voltage <85 mV Max at
    IO = 100 mA (TPS7250)
  • Low Quiescent Current, Independent of Load, 180 uA Typ
  • 8-Pin SOIC and 8-Pin TSSOP Package
  • Output Regulated to ±2% Over Full Operating Range for Fixed-Output Versions
  • Extremely Low Sleep-State Current,
    0.5 uA Max
  • Power-Good (PG) Status Output

The TPS72xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS72xx series devices are ideal for cost-sensitive designs and for designs where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low - maximum of 85 mV at 100 mA of load current (TPS7250) - and is directly proportional to the load current (see Figure 1). Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (300 uA maximum) and is stable over the entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system battery operating life.

The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 0.5 uA maximum at TJ = 25°C. Other features include a power-good function that reports low output voltage and may be used to implement a power-on reset or a low-battery indicator.

The TPS72xx is offered in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version).

The TPS72xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS72xx series devices are ideal for cost-sensitive designs and for designs where board space is at a premium.

A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low - maximum of 85 mV at 100 mA of load current (TPS7250) - and is directly proportional to the load current (see Figure 1). Since the PMOS pass element is a voltage-driven device, the quiescent current is very low (300 uA maximum) and is stable over the entire range of output load current (0 mA to 250 mA). Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage and micropower operation result in a significant increase in system battery operating life.

The TPS72xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 0.5 uA maximum at TJ = 25°C. Other features include a power-good function that reports low output voltage and may be used to implement a power-on reset or a low-battery indicator.

The TPS72xx is offered in 2.5-V, 3-V, 3.3-V, 4.85-V, and 5-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.2 V to 9.75 V). Output voltage tolerance is specified as a maximum of 2% over line, load, and temperature ranges (3% for adjustable version).

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Technical documentation

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Type Title Date
* Data sheet MicroPower Low-Dropout (LDO) Voltage Regulators datasheet (Rev. G) 05 Jun 2000
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A) 17 Aug 2018
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note Technical Review of Low Dropout Voltage Regulator Operation And Performance 30 Aug 1999

Design & development

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Supported products & hardware

Supported products & hardware

Products
Linear & low-dropout (LDO) regulators
TPS71 500-mA, 10-V, low-dropout voltage regulator with enable & RESET with delay TPS72 250-mA, 10-V, low-dropout voltage regulator with power good & enable TPS73 500-mA, 10-V, low-dropout voltage regulator with power good & enable TPS730 200-mA, low-dropout voltage regulator with enable
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PDIP (P) 8 View options
SOIC (D) 8 View options
TSSOP (PW) 8 View options

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