NCP4671DSN15T1G datasheet(1/23 Pages) ONSEMI

Part #	NCP4671DSN15T1G

Description	400 mA, Dual Rail Ultra Low Dropout Linear Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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February, 2012 − Rev. 2

1

Publication Order Number:

NCP4671/D

NCP4671

400 mA, Dual Rail Ultra Low

Dropout Linear Regulator

The NCP4671 is a CMOS Dual Supply Rail Linear Regulator

designed to provide very low output voltages. The Dual Rail

architecture which separates the power for the LDO control circuitry

(provided via the Vbias pin) from the main power path (Vin) offers

ultra−low dropout performance, allowing the device to operate from

input voltages down to 0.9 V and to generate a fixed high accuracy

output voltage as low as 0.6 V.

The NCP4671 offers excellent transient response with very low

quiescent currents. The family is available in a variety of packages:

SC−70, SOT23 and a small, ultra thin 1.2 x 1.2 x 0.4mm XDFN.

Features

• Bias Supply Voltage Range : 2.4 V to 5.25 V (VOUT < 0.8 V)

Set VOUT + 1.6 V to 5.25 V (VOUT ≥ 0.8 V)

• Power Input Voltage Range : 0.9 V to VBIAS (VOUT < 0.8 V)

Set VOUT + 0.1 V to VBIAS (VOUT ≥ 0.8 V)

• Output Voltage Range: 0.6 to 1.5 V (available at 0.1 steps)

• Very Low Dropout: 180 mV Typ. at 400 mA

• Quiescent Current: 28 mA

• Standby Current: 0.1 mA

• ±15 mV Output Voltage Accuracy (TA = 25°C)

• High PSRR: 80 dB at 1 kHz (Ripple at VIN)

50 dB at 1 kHz (Ripple at VBIAS)

• Current Fold Back Protection Typ. 120 mA

• Available in XDFN, SC−70, SOT23 Package

• These are Pb−Free Devices

Typical Applications

• Battery Powered Equipments

• Portable Communication Equipments

• Cameras, VCRs and Camcorders

VIN

VOUT

CE

GND

C1

C3

2m 2

VIN

VOUT

NCP4671x

VBIAS

C2

1m

DC/DC

converter

Figure 1. Typical Application Schematic

http://onsemi.com

See detailed ordering, marking and shipping information in the

package dimensions section on page 20 of this data sheet.

ORDERING INFORMATION

SC−70

CASE 419A

(In Development)

XX, XXX= Specific Device Code

M, MM = Date Code

A

= Assembly Location

Y

= Year

W

= Work Week

G

= Pb−Free Package

MARKING

DIAGRAMS

(*Note: Microdot may be in either location)

XDFN6

CASE 711AA

SOT−23−5

CASE 1212

XX

MM

XXX

XMM

1

XXXMM

1

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