Document
NCP121
Voltage Regulator - High Accuracy, Very Low Dropout, Bias Rail, CMOS
150 mA
The NCP121 is a high accuracy 150 mA VLDO equipped with NMOS pass transistor and a separate bias supply voltage (VBIAS). The device provides stable, very accurate output voltage with low noise suitable for space constrained, noise sensitive applications. In order to optimize performance for battery operated portable applications, the NCP121 features low IQ consumption. The XDFN6 1.2 mm x 1.2 mm package is optimized for use in space constrained applications.
Features
• Input Voltage Range: 0.8 V to 5.5 V • Bias Voltage Range: 2.4 V to 5.5 V • Fixed Output Voltage Device • Output Voltage Range: 0.8 V to 2.1 V • ±1.0% Accuracy over Line, Load and Temperature, 0.2% VOUT @
25°C
• Ultra−Low Dropout: 75 mV Maximum at 150 mA • Very Low Bias Input Current of Typ. 80 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 1 mF Ceramic Capacitor • Available in XDFN6 − 1.2 mm x 1.2 mm x 0.4 mm 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
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MARKING DIAGRAM
XDFN6 CASE 711AT
XX M
T
XX = Specific Device Code M = Date Code
PIN CONNECTIONS
OUT
1
6 IN
NC 2
Thermal Pad
5 GND
EN 3
(Top VIew)
4 BIAS
ORDERING INFORMATION
See detailed ordering, marking and shipping information on page 7 of this data sheet.
VBIAS 2.7 V
100 nF
VIN 1.2 V
1 mF
NCP121
BIAS
OUT
IN
EN GND
1 mF
VOUT 1.05 V @ 150 mA
VEN
Figure 1. Typical Application Schematics
© Semiconductor Components Industries, LLC, 2015
October, 2019 − Rev. 1
1
Publication Order Number: NCP121/D
NCP121
IN EN BIAS
ENABLE BLOCK UVLO
CURRENT LIMIT
VOLTAGE REFERENCE
+ −
THERMAL LIMIT
OUT 150 W *Active DISCHARGE
GND
*Active output discharge function is present only in NCP121AMXyyyTCG devices. yyy denotes the particular output voltage option. Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No. Pin Name
Description
1
OUT
Regulated Output Voltage pin
2 N/C Not internally connected
3 EN Enable pin. Driving this pin high enables the regulator. Driving this pin low puts the regulator into shutdown mode.
4
BIAS
Bias voltage supply for internal control circuits. This pin is monitored by internal Under-Voltage Lockout Circuit.
5
GND
Ground pin
6 IN Input Voltage Supply pin
Pad Should be soldered to the ground plane for increased thermal performance.
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage (Note 1)
VIN
−0.3 to 6
V
Output Voltage
VOUT
−0.3 to (VIN+0.3) ≤ 6
V
Chip Enable and Bias Input
VEN, VBIAS
−0.3 to 6
V
Output Short Circuit Duration
tSC
unlimited
s
Maximum Junction Temperature
TJ 150 °C
Storage Temperature
TSTG
−55 to 150
°C
ESD Capability, Human Body Model (Note 2)
ESDHBM
2000
V
ESD Capability, Machine Model (Note 2)
ESDMM
200 V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area. 2. This device series incorporates ESD protection (except OUT pin) and is tested by the following methods:
ESD Human Body Model tested per EIA/JESD22−A114 ESD Machine Model tested per EIA/JESD22−A115 Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
THERMAL CHARACTERISTICS
Rating
Symbol
Value
Unit
Thermal Characteristics, XDFN6 1.2 mm x 1.2 mm Thermal Resistance, Junction−to−Air
RqJA
170 °C/W
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NCP121
ELECTRICAL CHARACTERISTICS −40°C ≤ TJ ≤ 85°C; VBIAS = 2.7 V or (VOUT + 1.6 V), whichever is greater, VIN = VOUT(NOM) + 0.3 V, IOUT = 1 mA, VEN = 1 V, unless otherwise noted. CIN = 1 mF, CBIAS = 0.1 mF, COUT = 1 mF (effective capacitance) (Note 3). Typical values are at TJ = +25°C. Min/Max values are for −40°C ≤ TJ ≤ 85°C unless otherwise noted. (Note 4)
Parameter
Test Conditions
Symbol
Min Typ Max Unit
Operating Input Voltage Range
VIN VOUT+VDO
5.5 V
Operating Bias Voltage Range
VBIAS
(VOUT+1.35) ≥2.4
5.5 V
Undervoltage Lock−out VBIAS Rising Hysteresis
UVLO
1.6 V 0.2
Output Voltage Accuracy Output Voltage Accuracy
5−.400°VC, 2≤.7TVJ ≤or85(V°COU, TV(ONUOTM(N) +OM1).6+ V0).,3wVh≤ichVeINve≤r is greater < VBIAS < 5.5 V, 1 mA < IOUT < 150 mA
VOUT VOUT
−1.0
+1.0
%
±0.2 %
VIN Line Regulation VBIAS Line Regulation
Load Regulation VIN Dropout Voltage VBIAS Dropout Voltage Output Current Limit Bias Pin Operating Current
VOUT(NOM) + 0.3 V ≤ VIN ≤ 5.0 V 2.7 V or (VOUT(NOM) + 1.6 V), whichever is greater < VBIAS < 5.5 V IOUT = 1 m.