© Semiconductor Components Industries, LLC, 2017
March, 2017 − Rev. 2
1 Publication Order Number:
NCP139/D
NCP139
1 A, Very Low Dropout Bias
Rail CMOS Voltage
Regulator
The NCP139 is a 1 A VLDO equipped with NMOS pass transistor
and a separate bias supply voltage (V
BIAS
). The device provides very
stable, accurate output voltage with low noise suitable for space
constrained, noise sensitive applications. In order to optimize
performance for battery operated portable applications, the NCP139
features low I
Q
consumption. The WLCSP6 1.2 mm x 0.8 mm Chip
Scale package is optimized for use in space constrained applications.
Features
• Input Voltage Range: V
OUT
to 5.5 V
• Bias Voltage Range: 3.0 V to 5.5 V
• Adjustable and Fixed Voltage Version Available
• Output Voltage Range: 0.4 V to 1.8 V (Fixed)
Output Voltage Range: 0.5 V to 3.0 V (Adjustable)
• ±1% Accuracy over Temperature, 0.5% V
OUT
@ 25°C
• Ultra−Low Dropout: Typ. 50 mV at 1 A
• Very Low Bias Input Current of Typ. 35 mA
• Very Low Bias Input Current in Disable Mode: Typ. 0.5 mA
• Logic Level Enable Input for ON/OFF Control
• Output Active Discharge Option Available
• Stable with a 10 mF Ceramic Capacitor
• Available in WLCSP6 − 1.2 mm x 0.8 mm, 0.4 mm pitch Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Battery−powered Equipment
• Smartphones, Tablets
• Cameras, DVRs, STB and Camcorders
Figure 1. Typical Application Schematics
BIAS
IN
EN
OUT
GND
10 mF
V
OUT
0.9 V up to 1 Adc,
1.3 A peaks
V
BIAS
≥3.0 V
V
IN
V
EN
4.7 mF
1 mF
NCP139 − ADJ
FB
R1
R2
BIAS
IN
EN
OUT
GND
10 mF
V
OUT
0.9 V up to 1 Adc,
1.3 A peaks
V
BIAS
≥3.0 V
V
IN
V
EN
4.7 mF
1 mF
NCP139
SNS
www.onsemi.com
See detailed ordering, marking and shipping information on
page 7 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAM
PIN CONNECTIONS
WLCSP6, 1.2x0.8
CASE 567MV
12
A
B
C
VOUT VIN
SNS/FB
GND
EN
VBIAS
Top View
XX = Specific Device Code
M = Month Code
G = Pb−Free Package
XXMG
