LP38856

ACTIVO

Regulador de voltaje de 3 A, de baja VIN (1,15 V), de alta precisión y de caída ultrabaja, con habil

Haga su pedido ahora

Hoja de datos

document-pdfAcrobat LP38856 3-A Fast-Response High-Accuracy LDO Linear Regulator With Enable datasheet (Rev. F) (Inglés) PDF | HTML

LP38856

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Output options

Fixed Output

Iout (max) (A)

3

Vin (max) (V)

5.5

Vin (min) (V)

1.15

Vout (max) (V)

1.2

Vout (min) (V)

0.8

Fixed output options (V)

0.8, 1.2

Rating

Catalog

Noise (µVrms)

150

PSRR at 100 KHz (dB)

37

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

32

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

240

Operating temperature range (°C)

-40 to 125

Output options

Fixed Output

Iout (max) (A)

3

Vin (max) (V)

5.5

Vin (min) (V)

1.15

Vout (max) (V)

1.2

Vout (min) (V)

0.8

Fixed output options (V)

0.8, 1.2

Rating

Catalog

Noise (µVrms)

150

PSRR at 100 KHz (dB)

37

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

32

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

1

Dropout voltage (Vdo) (typ) (mV)

240

Operating temperature range (°C)

-40 to 125

TO-220 (NDH)

5

86.0552 mm² 10.16 x 8.47

TO-263 (KTT)

5

154.8384 mm² 10.16 x 15.24

Input Voltage: 1.1 V to 5.5 V
Wide V_BIAS Supply Operating
Range: 3 V to 5.5 V
Standard V_OUT: 0.8 V and 1.2 V
Stable with 10-µF Ceramic Capacitors
Dropout Voltage of 240 mV (Typical) at 3-A
Load Current
Precision Output Voltage Across All Line and
Load Conditions:
- ±1% for T_J = 25°C
- ±2% for 0°C ≤ T_J ≤ +125°C
- ±3% for –40°C ≤ T_J ≤ +125°C
Overtemperature and Overcurrent Protection
–40°C to +125°C Operating Temperature Range

Input Voltage: 1.1 V to 5.5 V
Wide V_BIAS Supply Operating
Range: 3 V to 5.5 V
Standard V_OUT: 0.8 V and 1.2 V
Stable with 10-µF Ceramic Capacitors
Dropout Voltage of 240 mV (Typical) at 3-A
Load Current
Precision Output Voltage Across All Line and
Load Conditions:
- ±1% for T_J = 25°C
- ±2% for 0°C ≤ T_J ≤ +125°C
- ±3% for –40°C ≤ T_J ≤ +125°C
Overtemperature and Overcurrent Protection
–40°C to +125°C Operating Temperature Range

The LP38856 is a high-current, fast-response regulator which can maintain output voltage regulation with an extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: V_BIAS provides power for the internal bias and control circuits, as well as drive for the gate of the N-MOS power transistor, while V_IN supplies power to the load. The use of an external bias rail allows the part 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 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. The LP38856 is available in 5-pin TO-220 and DDPAK/TO-263 packages.

Dropout Voltage: 240 mV (typical) at 3-A load current.
Low Ground Pin Current: 10 mA (typical) at 3-A load current.
Shutdown Current: 1 µA (typical) I_IN(GND) when EN pin is low.
Precision Output Voltage: ±1% for T_J = 25°C and ±2% for 0°C ≤ T_J ≤ +125°C, across all line and load conditions.

The LP38856 is a high-current, fast-response regulator which can maintain output voltage regulation with an extremely low input-to-output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: V_BIAS provides power for the internal bias and control circuits, as well as drive for the gate of the N-MOS power transistor, while V_IN supplies power to the load. The use of an external bias rail allows the part 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 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. The LP38856 is available in 5-pin TO-220 and DDPAK/TO-263 packages.

Dropout Voltage: 240 mV (typical) at 3-A load current.
Low Ground Pin Current: 10 mA (typical) at 3-A load current.
Shutdown Current: 1 µA (typical) I_IN(GND) when EN pin is low.
Precision Output Voltage: ±1% for T_J = 25°C and ±2% for 0°C ≤ T_J ≤ +125°C, across all line and load conditions.

filter

Buscar otro/a Reguladores lineales y de baja salida (LDO)

Descargar Ver vídeo con transcripción Video

Documentación técnica

star

=Principal documentación para este producto seleccionada por TI

No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.

Ver todo 4

	Tipo	Título		Fecha
*	Data sheet	LP38856 3-A Fast-Response High-Accuracy LDO Linear Regulator With Enable datasheet (Rev. F)	PDF \| HTML	27 ago 2015
	Selection guide	Power Management Guide 2018 (Rev. R)		25 jun 2018
	Selection guide	Low Dropout Regulators Quick Reference Guide (Rev. P)		21 mar 2018
	EVM User's guide	AN-1479 LP38856S-1.2 Evaluation Board (Rev. B)		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
TO-220 (NDH)	5	Ultra Librarian
TO-263 (KTT)	5	Ultra Librarian

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

LP38856

Regulador de voltaje de 3 A, de baja VIN (1,15 V), de alta precisión y de caída ultrabaja, con habil

LP38856

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

Serie de videos

Videos