TPS7A37

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1-A, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

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Data sheet

document-pdfAcrobat 1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection datasheet (Rev. B)

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TPS7A37

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Data sheet

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Product details

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1

Vin (max) (V)

5.5

Vin (min) (V)

2.2

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Fixed output options (V)

2.1, 2.5

Rating

Catalog

Noise (µVrms)

32

PSRR at 100 KHz (dB)

32

Iq (typ) (mA)

0.4

Thermal resistance θJA (°C/W)

67

Load capacitance (min) (µF)

1

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Reverse Current Protection

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

130

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1

Vin (max) (V)

5.5

Vin (min) (V)

2.2

Vout (max) (V)

5.5

Vout (min) (V)

1.2

Fixed output options (V)

2.1, 2.5

Rating

Catalog

Noise (µVrms)

32

PSRR at 100 KHz (dB)

32

Iq (typ) (mA)

0.4

Thermal resistance θJA (°C/W)

67

Load capacitance (min) (µF)

1

Regulated outputs (#)

1

Features

Enable, Foldback Overcurrent protection, Reverse Current Protection

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

130

Operating temperature range (°C)

-40 to 125

WSON (DRV)

6

4 mm² 2 x 2

Stable with 1-µF or Larger Ceramic Output
Capacitor
Input Voltage Range: 2.2 V to 5.5 V
Ultralow Dropout Voltage:
- 200-mV Maximum at 1 A
Excellent Load Transient Response–Even With
Only 1-µF Output Capacitor
NMOS Topology Delivers Low Reverse Leakage
Current
Excellent Accuracy:
- 0.23% Nominal Accuracy
- 1% Overall Accuracy Over Line, Over Load,
  and Over Temperature
Less Than 20-nA typical I_Q in Shutdown Mode
Thermal Shutdown and Current Limit for Fault
Protection

Stable with 1-µF or Larger Ceramic Output
Capacitor
Input Voltage Range: 2.2 V to 5.5 V
Ultralow Dropout Voltage:
- 200-mV Maximum at 1 A
Excellent Load Transient Response–Even With
Only 1-µF Output Capacitor
NMOS Topology Delivers Low Reverse Leakage
Current
Excellent Accuracy:
- 0.23% Nominal Accuracy
- 1% Overall Accuracy Over Line, Over Load,
  and Over Temperature
Less Than 20-nA typical I_Q in Shutdown Mode
Thermal Shutdown and Current Limit for Fault
Protection

The TPS7A37 family of linear low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. Load transient response is excellent, even with a small 1-µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS7A37 family uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20 nA and ideal for portable applications. These devices are protected by thermal shutdown and foldback current limit.

The TPS7A37 family of linear low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. Load transient response is excellent, even with a small 1-µF ceramic output capacitor. The NMOS topology also allows very low dropout.

The TPS7A37 family uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 20 nA and ideal for portable applications. These devices are protected by thermal shutdown and foldback current limit.

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Technical documentation

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	Type	Title		Date
*	Data sheet	1% High-Accuracy, 1-A, Low-Dropout Regulator with Reverse Current Protection datasheet (Rev. B)		23 Oct 2013
	Application note	A Topical Index of TI LDO Application Notes (Rev. F)		27 Jun 2019
	Technical article	LDO Basics: Preventing reverse current	PDF \| HTML	25 Jul 2018
	Selection guide	Low Dropout Regulators Quick Reference Guide (Rev. P)		21 Mar 2018
	User guide	TPS7A37XXDRV-529 Evaluation Module		22 Jan 2013