LP38853

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Regulador de voltaje ajustable de baja VIN (1,04 V) de 3 A y ultrabaja caída con habilitación

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document-pdfAcrobat LP38853 3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft Start datasheet (Rev. F) (Inglés) PDF | HTML

LP38853

ACTIVO

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Detalles del producto

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

1.04

Iout (max) (A)

3

Output options

Adjustable Output

Vout (max) (V)

1.8

Vout (min) (V)

0.8

Noise (µVrms)

150

PSRR at 100 KHz (dB)

35

Iq (typ) (mA)

10

Features

Enable, Soft start

Thermal resistance θJA (°C/W)

34

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

2

Dropout voltage (Vdo) (typ) (mV)

240

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Vin (max) (V)

5.5

Vin (min) (V)

1.04

Iout (max) (A)

3

Output options

Adjustable Output

Vout (max) (V)

1.8

Vout (min) (V)

0.8

Noise (µVrms)

150

PSRR at 100 KHz (dB)

35

Iq (typ) (mA)

10

Features

Enable, Soft start

Thermal resistance θJA (°C/W)

34

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

2

Dropout voltage (Vdo) (typ) (mV)

240

Operating temperature range (°C)

-40 to 125

HSOIC (DDA)

8

29.4 mm² 4.9 x 6

TO-220 (NDZ)

7

82.6008 mm² 10.16 x 8.13

TO-263 (KTW)

7

153.924 mm² 10.1 x 15.24

Wide V_BIAS Supply Operating Range: 3 V to 5.5 V
Adjustable V_OUT Range: 0.8 V to 1.8 V
Dropout Voltage of 240 mV (Typical) at 3-A Load Current
Precision V_ADJ Across All Line and Load Conditions:
- ±1.5% V_ADJ for T_J = 25°C
- ±2% V_ADJ for 0°C ≤ T_J ≤ +125°C
- ±3% V_ADJ for –40°C ≤ T_J ≤ +125°C
Overtemperature and Overcurrent Protection
Stable with 10-µF Ceramic Capacitors
−40°C to +125°C Operating Junction Temperature Range

Wide V_BIAS Supply Operating Range: 3 V to 5.5 V
Adjustable V_OUT Range: 0.8 V to 1.8 V
Dropout Voltage of 240 mV (Typical) at 3-A Load Current
Precision V_ADJ Across All Line and Load Conditions:
- ±1.5% V_ADJ for T_J = 25°C
- ±2% V_ADJ for 0°C ≤ T_J ≤ +125°C
- ±3% V_ADJ for –40°C ≤ T_J ≤ +125°C
Overtemperature and Overcurrent Protection
Stable with 10-µF Ceramic Capacitors
−40°C to +125°C Operating Junction Temperature Range

The LP38853 is a high-current, fast-response regulator that can maintain output voltage regulation with extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: V_BIAS provides voltage to drive the gate of the NMOS power transistor; V_IN is the input voltage which supplies power to the load. The use of an external bias rail allows the device to operate from ultra-low V_IN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an NMOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time

For all available packages, see the orderable addendum at the end of the data sheet.

The LP38853 is a high-current, fast-response regulator that can maintain output voltage regulation with extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: V_BIAS provides voltage to drive the gate of the NMOS power transistor; V_IN is the input voltage which supplies power to the load. The use of an external bias rail allows the device to operate from ultra-low V_IN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an NMOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time

For all available packages, see the orderable addendum at the end of the data sheet.

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Data sheet	LP38853 3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft Start datasheet (Rev. F)	PDF \| HTML	04 nov 2016
	Application note	A Topical Index of TI LDO Application Notes (Rev. F)		27 jun 2019
	Selection guide	Power Management Guide 2018 (Rev. R)		25 jun 2018
	Selection guide	Low Dropout Regulators Quick Reference Guide (Rev. P)		21 mar 2018
	Application note	AN-1815 LDOs Ease the Stress of Start-Up (Rev. A)		24 abr 2013

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Encapsulado	Pines	Símbolos CAD, huellas y modelos 3D
HSOIC (DDA)	8	Ultra Librarian
TO-220 (NDZ)	7	Ultra Librarian
TO-263 (KTW)	7	Ultra Librarian

Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

LP38853

Regulador de voltaje ajustable de baja VIN (1,04 V) de 3 A y ultrabaja caída con habilitación

LP38853

Detalles del producto

Documentación técnica

Diseño y desarrollo

Pedidos y calidad

Soporte y capacitación

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