LP38852

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Regulador de voltaje ajustable de baja VIN (0,93 V) de 1,5 A y ultrabaja caída con habilitación

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document-pdfAcrobat LP38852-ADJ 1.5-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft-Start datasheet (Rev. F) (Inglés) PDF | HTML

LP38852

ACTIVO

Hoja de datos

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Detalles del producto

Output options

Adjustable Output

Iout (max) (A)

1.5

Vin (max) (V)

5.5

Vin (min) (V)

0.93

Vout (max) (V)

1.8

Vout (min) (V)

0.8

Noise (µVrms)

90

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

34

Rating

Catalog

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable, Soft start

Accuracy (%)

3

PSRR at 100 KHz (dB)

35

Dropout voltage (Vdo) (typ) (mV)

130

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output

Iout (max) (A)

1.5

Vin (max) (V)

5.5

Vin (min) (V)

0.93

Vout (max) (V)

1.8

Vout (min) (V)

0.8

Noise (µVrms)

90

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

34

Rating

Catalog

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable, Soft start

Accuracy (%)

3

PSRR at 100 KHz (dB)

35

Dropout voltage (Vdo) (typ) (mV)

130

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

Input V_IN Range 0.93 V to 5.5 V
Adjustable V_OUT Range 0.8 V to 1.8 V
Wide V_BIAS Supply Operating Range 3 V to 5.5 V
Dropout Voltage of 130 mV (Typical) at 1.5-A Load Current
Precision Output Voltage 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
Available in 7-pin TO-220, 7-Pin DDPAK/TO-263, and 8-Pin SO PowerPAD Packages
−40°C to +125°C Operating Junction Temperature Range

Input V_IN Range 0.93 V to 5.5 V
Adjustable V_OUT Range 0.8 V to 1.8 V
Wide V_BIAS Supply Operating Range 3 V to 5.5 V
Dropout Voltage of 130 mV (Typical) at 1.5-A Load Current
Precision Output Voltage 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
Available in 7-pin TO-220, 7-Pin DDPAK/TO-263, and 8-Pin SO PowerPAD Packages
−40°C to +125°C Operating Junction Temperature Range

The LP38852-ADJ is a high-current, fast-response regulator which 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 N-MOS power transistor, while V_IN is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultralow V_IN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS 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, microcontroller core voltages, and switch-mode power supply post-regulators.

130 mV (typical) at 1.5-A load current.

10 mA (typical) at 1.5-A load current.

Programmable soft-start time.

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

The LP38852-ADJ is a high-current, fast-response regulator which 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 N-MOS power transistor, while V_IN is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultralow V_IN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS 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, microcontroller core voltages, and switch-mode power supply post-regulators.

130 mV (typical) at 1.5-A load current.

10 mA (typical) at 1.5-A load current.

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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	Tipo	Título		Fecha
*	Data sheet	LP38852-ADJ 1.5-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft-Start datasheet (Rev. F)	PDF \| HTML	17 dic 2015
	Selection guide	Power Management Guide 2018 (Rev. R)		25 jun 2018
	EVM User's guide	AN-1560 LP38852MR-ADJ Evaluation Board (Rev. B)		24 abr 2013
	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.

LP38852

Regulador de voltaje ajustable de baja VIN (0,93 V) de 1,5 A y ultrabaja caída con habilitación

LP38852

Detalles del producto

Documentación técnica

Diseño y desarrollo

Pedidos y calidad

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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