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NCP139AFCTC06ADJT2G

P1-P3P4-P6P7-P8
NCP139
www.onsemi.com
4
ELECTRICAL CHARACTERISTICS −40°C ≤ T
J
≤ 85°C; V
BIAS
= 3.0 V or (V
OUT
+ 1.6 V), whichever is greater, V
IN
= V
OUT(NOM)
+
0.3 V, I
OUT
= 1 mA, V
EN
= 1 V, C
IN
= 10 mF, C
OUT
= 10 mF, C
BIAS
= 1 mF, unless otherwise noted. Typical values are at T
J
= +25°C.
Min/Max values are for −40°C ≤ T
J
≤ 85°C unless otherwise noted. (Notes 4, 5)
Parameter
Test Conditions Symbol Min Typ Max Unit
Operating Input Voltage
Range
V
IN
V
OUT
+
V
DO
5.5 V
Operating Bias Voltage
Range
V
BIAS
(V
OUT
+
1.60) ≥ 3.0
5.5 V
Undervoltage Lock−out V
BIAS
Rising
Hysteresis
UVLO 1.6
0.2
V
Reference Voltage
(Adj devices)
NCP139Axxxx05ADJT2G, T
J
= +25°C
V
REF
0.500
V
NCP139Axxxx06ADJT2G, T
J
= +25°C 0.600
Output Voltage Accuracy V
OUT
±0.5 %
Output Voltage Accuracy −40°C ≤ T
J
≤ 85°C, V
OUT(NOM)
+ 0.3 V ≤ V
IN
≤
V
OUT(NOM)
+ 1.0 V, 3.0 V or (V
OUT(NOM)
+
1.6 V), whichever is greater < V
BIAS
< 5.5 V,
1 mA < I
OUT
< 1.0 A
V
OUT
−1.0 +1.0 %
V
IN
Line Regulation V
OUT(NOM)
+ 0.3 V ≤ V
IN
≤ 5.0 V Line
Reg
0.01 %/V
V
BIAS
Line Regulation 3.0 V or (V
OUT(NOM)
+ 1.6 V), whichever is
greater < V
BIAS
< 5.5 V
Line
Reg
0.01 %/V
Load Regulation I
OUT
= 1 mA to 1.0 A Load
Reg
2.0
mV
V
IN
Dropout Voltage I
OUT
= 1.0 A (Notes 6, 7) V
DO
50 80 mV
V
BIAS
Dropout Voltage I
OUT
= 1.0 A, V
IN
= V
BIAS
(Notes 6, 8, 9) V
DO
1.05 1.5 V
Output Current Limit V
OUT
= 90% V
OUT(NOM)
I
CL
1500 2000 2600 mA
FB/SNS Pin Operating
Current
I
FB
, I
SNS
0.1 0.5
mA
Bias Pin Quiescent
Current
V
BIAS
= 3.0 V, I
OUT
= 0 mA I
BIASQ
35 50
mA
Bias Pin Disable Current V
EN
≤ 0.4 V I
BIAS(DIS)
0.5 1
mA
Vinput Pin Disable
Current
V
EN
≤ 0.4 V I
VIN(DIS)
0.5 1
mA
EN Pin Threshold Voltag
e
EN Input Voltage “H” V
EN(H)
0.9
V
EN Input Voltage “L” V
EN(L)
0.4
EN Pull Down Current V
EN
= 5.5 V I
EN
0.3 1
mA
Turn−On Time From assertion of V
EN
to V
OUT
=
98% V
OUT(NOM)
. V
OUT(NOM)
= 1.0 V,
C
OUT
= 10 mF
t
ON
160
ms
Power Supply Rejection
Ratio
(Adj devices)
V
IN
to V
OUT
, f = 1 kHz, I
OUT
= 10 mA,
V
IN ≥ V
OUT
+0.5 V, V
OUT(NOM)
= 1.0 V,
C
OUT
= 10 mF
PSRR(V
IN
) 70 dB
V
BIAS
to V
OUT
, f = 1 kHz, I
OUT
= 10 mA,
V
IN ≥ V
OUT
+0.5 V, V
OUT(NOM)
= 1.0 V,
C
OUT
= 10 mF
PSRR(V
BIAS
) 85 dB
Output Noise Voltage
(Adj devices)
V
IN
= V
OUT
+0.5 V, f = 10 Hz to 100 kHz,
V
OUT(NOM)
= 1.0 V, C
OUT
= 10 mF
V
N
35 x
V
OUT
/V
REF
mV
RMS
Power Supply Rejection
Ratio (Fixed Voltage
devices)
V
IN
to V
OUT
, f = 1 kHz, I
OUT
= 10 mA, V
IN
≥
V
OUT
+0.5 V, V
OUT(NOM)
= 1.8 V, C
OUT
= 10 mF
PSRR(V
IN
) 75 dB
V
BIAS
to V
OUT
, f = 1 kHz, I
OUT
= 10 mA, V
IN
≥
V
OUT
+0.5 V, V
OUT(NOM)
= 1.8 V, V
BIAS
= 4.0 V,
C
OUT
= 10 mF
PSRR(V
BIAS
) 85 dB
4. Performance guaranteed over the indicated operating temperature range by design and/or characterization. Production tested at T
A
=
25°C. Low duty cycle pulse techniques are used during the testing to maintain the junction temperature as close to ambient as possible.
5. Adjustable devices tested at V
OUT
= V
REF
unless otherwise noted; external resistor tolerance is not taken into account.
6. Dropout voltage is characterized when V
OUT
falls 3% below V
OUT(NOM)
.
7. For adjustable devices, V
IN
dropout voltage tested at V
OUT(NOM)
= 2 x V
REF
.
8. For adjustable devices, V
BIAS
dropout voltage tested at V
OUT(NOM)
= 3 x V
REF
due to a minimum Bias operating voltage of 3.0 V.
9. For Fixed Voltages below 1.8 V, V
BIAS
dropout voltage does not apply due to a minimum Bias operating voltage of 3.0 V.
NCP139
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5
ELECTRICAL CHARACTERISTICS −40°C ≤ T
J
≤ 85°C; V
BIAS
= 3.0 V or (V
OUT
+ 1.6 V), whichever is greater, V
IN
= V
OUT(NOM)
+
0.3 V, I
OUT
= 1 mA, V
EN
= 1 V, C
IN
= 10 mF, C
OUT
= 10 mF, C
BIAS
= 1 mF, unless otherwise noted. Typical values are at T
J
= +25°C.
Min/Max values are for −40°C ≤ T
J
≤ 85°C unless otherwise noted. (Notes 4, 5)
Parameter UnitMaxTypMinSymbolTest Conditions
Output Noise Voltage
(Fixed Voltage devices)
V
IN
= V
OUT
+0.5 V, f = 10 Hz to 100 kHz,
V
OUT(NOM)
= 1.8 V, C
OUT
= 10 mF
V
N
48
mVRMS
Thermal Shutdown
Threshold
Temperature increasing 160
°C
Temperature decreasing 140
Output Discharge
Pull−Down
V
EN
≤ 0.4 V, V
OUT
= 0.5 V, NCP139A options
only
R
DISCH
150
W
4. Performance guaranteed over the indicated operating temperature range by design and/or characterization. Production tested at T
A
=
25°C. Low duty cycle pulse techniques are used during the testing to maintain the junction temperature as close to ambient as possible.
5. Adjustable devices tested at V
OUT
= V
REF
unless otherwise noted; external resistor tolerance is not taken into account.
6. Dropout voltage is characterized when V
OUT
falls 3% below V
OUT(NOM)
.
7. For adjustable devices, V
IN
dropout voltage tested at V
OUT(NOM)
= 2 x V
REF
.
8. For adjustable devices, V
BIAS
dropout voltage tested at V
OUT(NOM)
= 3 x V
REF
due to a minimum Bias operating voltage of 3.0 V.
9. For Fixed Voltages below 1.8 V, V
BIAS
dropout voltage does not apply due to a minimum Bias operating voltage of 3.0 V.
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
NCP139
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6
APPLICATIONS INFORMATION
IN
EN FB
LX
GND
Processor
I/O
BIAS
IN
OUT
GND
NCP139
LOAD
VBAT
1.5 V
1.0 V
To other circuits
I/O
EN
Figure 4. Typical Application: Low−Voltage DC/DC Post−Regulator with ON/OFF Functionality
Switch−mode DC/DC
V
OUT
= 1.5 V
FB
R1
R2
The NCP139 dual−rail very low dropout voltage regulator
is using NMOS pass transistor for output voltage regulation
from V
IN
voltage. All the low current internal control
circuitry is powered from the V
BIAS
voltage.
The use of an NMOS pass transistor offers several
advantages in applications. Unlike PMOS topology devices,
the output capacitor has reduced impact on loop stability.
Vin to Vout operating voltage difference can be very low
compared with standard PMOS regulators in very low Vin
applications.
The NCP139 offers smooth monotonic start-up. The
controlled voltage rising limits the inrush current.
The Enable (EN) input is equipped with internal
hysteresis. NCP139 Voltage linear regulator Fixed and
Adjustable version is available.
Output Voltage Adjust
The required output voltage of Adjustable devices can be
adjusted from V
REF
to 3.0 V using two external resistors.
Typical application schematics is shown in Figure 5.
BIAS
IN
OUT
GND
C
BIAS
10
μF
C
IN
NCP139  ADJ
V
BIAS
V
IN
EN
V
EN
V
OUT
FB
R1
R2
Figure 5. Typical Application Schematics
V
OUT
+ V
REF
ǒ
1 ) R1ńR2
Ǔ
It is recommended to keep the total serial resistance of
resistors (R1 + R2) no greater than 100 kW.
Dropout Voltage
Because of two power supply inputs V
IN
and V
BIAS
and
one V
OUT
regulator output, there are two Dropout voltages
specified.
The first, the V
IN
Dropout voltage is the voltage
difference (V
IN
– V
OUT
) when V
OUT
starts to decrease by
percent specified in the Electrical Characteristics table.
V
BIAS
is high enough; specific value is published in the
Electrical Characteristics table.
The second, V
BIAS
dropout voltage is the voltage
difference (V
BIAS
– V
OUT
) when V
IN
and V
BIAS
pins are
joined together and V
OUT
starts to decrease.
Input and Output Capacitors
The device is designed to be stable for ceramic output
capacitors with Effective capacitance in the range from
10 mF to 22 mF. The device is also stable with multiple
capacitors in parallel, having the total effective capacitance
in the specified range.
In applications where no low input supplies impedance
available (PCB inductance in V
IN
and/or V
BIAS
inputs as
example), the recommended C
IN
= 1 mF and C
BIAS
= 0.1 mF
or greater. Ceramic capacitors are recommended. For the
best performance all the capacitors should be connected to
the NCP139 respective pins directly in the device PCB
copper layer, not through vias having not negligible
impedance.
When using small ceramic capacitor, their capacitance is
not constant but varies with applied DC biasing voltage,
temperature and tolerance. The effective capacitance can be
much lower than their nominal capacitance value, most
importantly in negative temperatures and higher LDO
output voltages. That is why the recommended Output
capacitor capacitance value is specified as Effective value in
the specific application conditions.
P1-P3P4-P6P7-P8

NCP139AFCTC06ADJT2G

Mfr. #:
Buy NCP139AFCTC06ADJT2G
Manufacturer:
ON Semiconductor
Description:
LDO Voltage Regulators 1A VERY LOW DROPOUT BIAS
Lifecycle:
New from this manufacturer.
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