NCP137
700 mA, Very Low Dropout
Bias Rail CMOS Voltage
Regulator
The NCP137 is a 700 mA 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
NCP137 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
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MARKING
DIAGRAM
WLCSP6, 1.2x0.8
CASE 567MV
XXMG
•
•
•
•
•
•
•
•
•
•
•
•
•
Input Voltage Range: V
OUT
to 5.5 V
Bias Voltage Range: 2.5 V to 5.5 V
Adjustable and Fixed Voltage Version Available
Output Voltage Range: 0.4 V to 1.8 V (Fixed) and
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. 40 mV at 700 mA
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 4.7
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
XX = Specific Device Code
M = Month Code
G
= Pb−Free Package
PIN CONNECTIONS
1
2
A
VOUT
VIN
B
SNS/FB
EN
C
GND
VBIAS
Typical Applications
•
Battery−powered Equipment
•
Smartphones, Tablets
•
Cameras, DVRs, STB and Camcorders
Top View
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 7 of this data sheet.
V
BIAS
≥2.5
V
1
mF
NCP137
−
ADJ
BIAS
V
IN
1.02 V
4.7
mF
IN
EN
FB
GND
R2
OUT
R1
4.7
mF
V
OUT
0.9 V up to 700 mA
V
BIAS
≥2.5
V
1
mF
BIAS
V
IN
1.02 V
4.7
mF
IN
EN
SNS
GND
NCP137
OUT
10
mF
V
OUT
0.9 V up to 700 mA
V
EN
V
EN
Figure 1. Typical Application Schematics
©
Semiconductor Components Industries, LLC, 2016
September, 2018
−
Rev. 5
1
Publication Order Number:
NCP137/D
NCP137
IN
EN
BIAS
ENABLE
BLOCK
UVLO
0.50 V
VOLTAGE
REFERENCE
CURRENT
LIMIT
150
W
*Active
DISCHARGE
OUT
+
−
THERMAL
LIMIT
FB
GND
*Active output discharge function is present only in NCP137A option devices.
Figure 2. Simplified Schematic Block Diagram
−
Adjustable Version
IN
EN
BIAS
ENABLE
BLOCK
UVLO
CURRENT
LIMIT
150
W
*Active
DISCHARGE
OUT
VOLTAGE
REFERENCE
+
−
THERMAL
LIMIT
SNS
GND
*Active output discharge function is present only in NCP137A option devices.
Figure 3. Simplified Schematic Block Diagram
−
Fixed Version
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2
NCP137
PIN FUNCTION DESCRIPTION
Pin No.
WLCSP6
A1
A2
B1
(ADJ devices)
B1
(Fix Volt devices)
B2
C1
C2
Pin Name
VOUT
VIN
FB
SNS
EN
GND
VBIAS
Regulated Output Voltage pin
Input Voltage Supply pin
Adjustable Regulator Feedback Input. Connect to output voltage resistor divider central node.
Output voltage Sensing Input. Connect to Output on the PCB to output the voltage
corresponding to the part version.
Enable pin. Driving this pin high enables the regulator. Driving this pin low puts the regulator into
shutdown mode.
Ground pin
Bias voltage supply for internal control circuits. This pin is monitored by internal Under-Voltage
Lockout Circuit.
Description
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Output Voltage
Chip Enable, Bias, FB and SNS Input
Output Short Circuit Duration
Maximum Junction Temperature
Storage Temperature
ESD Capability, Human Body Model (Note 2)
ESD Capability, Machine Model (Note 2)
Symbol
V
IN
V
OUT
V
EN,
V
BIAS,
V
FB,
V
SNS
t
SC
T
J
T
STG
ESD
HBM
ESD
MM
Value
−0.3
to 6
−0.3
to (V
IN
+0.3)
≤
6
−0.3
to 6
unlimited
150
−55
to 150
2000
200
Unit
V
V
V
s
°C
°C
V
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
Thermal Characteristics, WLCSP6 1.2 mm x 0.8 mm
Thermal Resistance, Junction−to−Air (Note 3)
Symbol
R
qJA
Value
69
Unit
°C/W
3. This junction−to−ambient thermal resistance under natural convection was derived by thermal simulations based on the JEDEC JESD51
series standards methodology. Only a single device mounted at the center of a high_K (2s2p) 80 mm x 80 mm multilayer board with 1−ounce
internal planes and 2−ounce copper on top and bottom. Top copper layer has a dedicated 1.6 sqmm copper area.
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NCP137
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
J
≤
85°C; V
BIAS
= 2.7 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
= 4.7
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
Operating Input Voltage
Range
Operating Bias Voltage
Range
Undervoltage Lock−out
Reference Voltage
(Adj devices)
Output Voltage Accuracy
Output Voltage Accuracy
−40°C
≤
T
J
≤
85°C, V
OUT(NOM)
+ 0.3 V
≤
V
IN
≤
V
OUT(NOM)
+ 1.0 V, 2.7 V or (V
OUT(NOM)
+
1.6 V), whichever is greater < V
BIAS
< 5.5 V,
1 mA < I
OUT
< 700 mA
V
OUT(NOM)
+ 0.3 V
≤
V
IN
≤
5.0 V
2.7 V or (V
OUT(NOM)
+ 1.6 V), whichever is
greater < V
BIAS
< 5.5 V
I
OUT
= 1 mA to 700 mA
I
OUT
= 700 mA (Notes 6, 7)
I
OUT
= 700 mA, V
IN
= V
BIAS
(Notes 6, 8, 9)
V
OUT
= 90% V
OUT(NOM)
V
BIAS
Rising
Hysteresis
T
J
= +25°C
Test Conditions
Symbol
V
IN
V
BIAS
UVLO
V
REF
V
OUT
V
OUT
−1.0
Min
V
OUT
+
V
DO
(V
OUT
+
1.50)
≥
2.5
1.6
0.2
0.500
±0.5
+1.0
Typ
Max
5.5
5.5
Unit
V
V
V
V
%
%
V
IN
Line Regulation
V
BIAS
Line Regulation
Load Regulation
V
IN
Dropout Voltage
V
BIAS
Dropout Voltage
Output Current Limit
FB/SNS Pin Operating
Current
Bias Pin Quiescent
Current
Bias Pin Disable Current
Vinput Pin Disable
Current
Line
Reg
Line
Reg
Load
Reg
V
DO
V
DO
I
CL
I
FB
, I
SNS
800
0.01
0.01
1.5
40
1.1
1200
0.1
35
0.5
0.5
0.9
0.4
0.3
150
1
60
1.5
1500
0.5
50
1
1
%/V
%/V
mV
mV
V
mA
mA
mA
mA
mA
V
V
BIAS
= 2.7 V, I
OUT
= 0 mA
V
EN
≤
0.4 V
V
EN
≤
0.4 V
I
BIASQ
I
BIAS(DIS)
I
VIN(DIS)
V
EN(H)
V
EN(L)
I
EN
t
ON
EN Pin Threshold Voltage EN Input Voltage “H”
EN Input Voltage “L”
EN Pull Down Current
Turn−On Time
V
EN
= 5.5 V
From assertion of V
EN
to V
OUT
=
98% V
OUT(NOM)
. V
OUT(NOM)
= 1.0 V,
C
OUT
= 4.7
mF
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
= 4.7
mF
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,
V
BIAS
= 3.0 V, C
OUT
= 4.7
mF
Output Noise Voltage
(Adj devices)
Thermal Shutdown
Threshold
V
IN
= V
OUT
+0.5 V, f = 10 Hz to 100 kHz,
V
OUT(NOM)
= 1.0 V, C
OUT
= 4.7
mF
Temperature increasing
Temperature decreasing
mA
ms
Power Supply Rejection
Ratio (Adj devices)
PSRR(V
IN
)
75
dB
PSRR(V
BIAS
)
85
dB
V
N
35 x
V
OUT
/V
REF
160
140
mV
RMS
°C
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 2.5 V.
9. For fixed output voltages below 1.5 V, V
BIAS
dropout does not apply due to a minimum Bias operating voltage of 2.5 V.
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NCP137
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
J
≤
85°C; V
BIAS
= 2.7 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
= 4.7
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
Output Discharge
Pull−Down
Power Supply Rejection
Ratio (Fixed Voltage
devices)
Test Conditions
V
EN
≤
0.4 V, V
OUT
= 0.5 V, NCP137A options
only
V
IN
to V
OUT
,
f = 1 kHz, I
OUT
= 10 mA,
V
IN
≥
V
OUT
+0.5 V, V
OUT(NOM)
= 1.05 V,
C
OUT
= 10
mF
V
BIAS
to V
OUT
,
f = 1 kHz, I
OUT
= 10 mA,
V
IN
≥
V
OUT
+0.5 V, V
OUT(NOM)
= 1.05 V,
V
BIAS
= 3.0 V, C
OUT
= 10
mF
Output Noise Voltage
(Fixed Voltage devices)
V
IN
= V
OUT
+0.5 V, f = 10 Hz to 100 kHz,
V
OUT(NOM)
= 1.05 V, C
OUT
= 10
mF
Symbol
R
DISCH
PSRR(V
IN
)
Min
Typ
150
75
Max
Unit
W
dB
PSRR(V
BIAS
)
85
dB
V
N
40
mV
RMS
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 2.5 V.
9. For fixed output voltages below 1.5 V, V
BIAS
dropout does not apply due to a minimum Bias operating voltage of 2.5 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.
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