ONSEMI NCP511SN27T1G

NCP511
150 mA CMOS Low Iq
Low−Dropout Voltage
Regulator
The NCP511 series of fixed output low dropout linear regulators are
designed for handheld communication equipment and portable battery
powered applications which require low quiescent current. The
NCP511 series features an ultra−low quiescent current of 40 A. Each
device contains a voltage reference unit, an error amplifier, a PMOS
power transistor, resistors for setting output voltage, current limit, and
temperature limit protection circuits.
The NCP511 has been designed to be used with low cost ceramic
capacitors and requires a minimum output capacitor of 1.0 F. The
device is housed in the micro−miniature TSOP−5 surface mount
package. Standard voltage versions are 1.5 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V,
3.0 V, 3.3 V, and 5.0 V. Other voltages are available in 100 mV steps.
1
TSOP−5
(SOT23−5, SC59−5)
SN SUFFIX
CASE 483
Vin
1
GND
2
Enable
3
xxxAYWG
G
Low Quiescent Current of 40 A Typical
Low Dropout Voltage of 100 mV at 100 mA
Excellent Line and Load Regulation
Maximum Operating Voltage of 6.0 V
Low Output Voltage Option
High Accuracy Output Voltage of 2.0%
Industrial Temperature Range of −40°C to 85°C
Pb−Free Packages are Available
5 Vout
4 N/C
(Top View)
xxx = Specific Device Code
A
= Assembly Location
Y
= Year
W = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
Typical Applications
•
•
•
•
5
PIN CONNECTIONS AND
MARKING DIAGRAM
Features
•
•
•
•
•
•
•
•
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Cellular Phones
Battery Powered Instruments
Hand−Held Instruments
Camcorders and Cameras
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Vin
Vout
1
5
Thermal
Shutdown
Driver w/
Current
Limit
Enable
ON
3
OFF
GND
2
This device contains 82 active transistors
Figure 1. Representative Block Diagram
© Semiconductor Components Industries, LLC, 2006
February, 2006 − Rev. 10
1
Publication Order Number:
NCP511/D
NCP511
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PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
1
Vin
Description
2
GND
3
Enable
4
N/C
No internal connection.
5
Vout
Regulated output voltage.
Positive power supply input voltage.
Power supply ground.
This input is used to place the device into low−power standby. When this input is pulled low, the device is
disabled. If this function is not used, Enable should be connected to Vin.
MAXIMUM RATINGS
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Rating
Symbol
Value
Unit
Vin
0 to 6.0
V
Enable Voltage
Enable
−0.3 to Vin +0.3
V
Output Voltage
Vout
−0.3 to Vin +0.3
V
Power Dissipation and Thermal Characteristics
Power Dissipation
Thermal Resistance, Junction to Ambient
PD
RJA
Internally Limited
250
W
°C/W
Operating Junction Temperature
TJ
+125
°C
Operating Ambient Temperature
TA
−40 to +85
°C
Storage Temperature
Tstg
−55 to +150
°C
Input Voltage
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL−STD−883, Method 3015
Machine Model Method 200 V
2. Latch up capability (85°C) "100 mA DC with trigger voltage.
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2
NCP511
ELECTRICAL CHARACTERISTICS (Vin = Vout(nom.) + 1.0 V, Venable = Vin, Cin = 1.0 F, Cout = 1.0 F, TJ = 25°C, unless
otherwise noted.)
Characteristic
Symbol
Output Voltage (TA = 25°C, Iout = 1.0 mA)
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
3.0 V
3.3 V
5.0 V
Vout
Output Voltage (TA = −40°C to 85°C, Iout = 1.0 mA)
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
3.0 V
3.3 V
5.0 V
Vout
Line Regulation (Iout = 10 mA)
1.5 V−4.4 V (Vin = Vout(nom.) + 1.0 V to 6.0 V)
4.5 V−5.0 V (Vin = 5.5 V to 6.0 V)
Regline
Load Regulation (Iout = 1.0 mA to 150 mA)
Regload
Output Current (Vout = (Vout at Iout = 150 mA) −3%)
1.5 V−1.8 V (Vin = 4.0 V)
1.9 V−3.0 V (Vin = 5.0 V)
3.1 V−5.0 V (Vin = 6.0 V)
Iout(nom.)
Dropout Voltage (Iout = 100 mA, Measured at Vout −3.0%)
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
3.0 V
3.3 V
5.0 V
Vin−Vout
Quiescent Current
(Enable Input = 0 V)
(Enable Input = Vin, Iout = 1.0 mA to Io(nom.))
IQ
Output Voltage Temperature Coefficient
TC
Enable Input Threshold Voltage
(Voltage Increasing, Output Turns On, Logic High)
(Voltage Decreasing, Output Turns Off, Logic Low)
Min
Typ
Max
1.455
1.746
2.425
2.646
2.744
2.94
3.234
4.900
1.5
1.8
2.5
2.7
2.8
3.0
3.3
5.0
1.545
1.854
2.575
2.754
2.856
3.06
3.366
5.100
1.455
1.746
2.425
2.619
2.716
2.910
3.201
4.900
1.5
1.8
2.5
2.7
2.8
3.0
3.3
5.0
1.545
1.854
2.575
2.781
2.884
3.09
3.399
5.100
−
−
1.0
1.0
3.5
3.5
−
0.3
0.8
150
150
150
−
−
−
−
−
−
−
−
−
−
−
−
−
−
245
160
110
100
100
100
90
75
350
200
200
200
200
200
200
200
−
−
0.1
40
1.0
100
−
"100
−
1.3
−
−
−
−
0.3
200
200
200
400
400
400
800
800
800
Unit
V
V
mV/V
mV/mA
mA
mV
A
ppm/°C
Vth(en)
Output Short Circuit Current (Vout = 0 V)
1.5 V−1.8 V (Vin = 4.0 V)
1.9 V−3.0 V (Vin = 5.0 V)
3.1 V−5.0 V (Vin = 6.0 V)
V
Iout(max)
mA
Ripple Rejection (f = 1.0 kHz, Io = 60 mA)
RR
−
50
−
dB
Output Noise Voltage (f = 20 Hz to 100 kHz, Iout = 60 mA)
Vn
−
110
−
Vrms
3. Maximum package power dissipation limits must be observed.
T
*TA
PD + J(max)
RJA
4. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
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3
NCP511
3.5
200
DROPOUT VOLTAGE (mV)
180
Vout, OUTPUT VOLTAGE (V)
Vout(nom.) = 3.0 V
Iout = 150 mA
160
140
120
Iout = 100 mA
100
80
Iout = 50 mA
60
40
Iout = 1 mA
Iout = 10 mA
20
0
−60 −40 −20
2.5
2.0
1.5
20
40
60
80
Vout(nom.) = 3.0 V
IO = 0 mA
Cin = 1.0 F
Cout = 1.0 F
TA = 25°C
Venable = Vin
1.0
0.5
0
0
100 120 140
0
1
2
4
5
6
Vin, INPUT VOLTAGE (V)
Figure 2. Dropout Voltage vs. Temperature
Figure 3. Output Voltage vs. Input Voltage
7
GROUND PIN CURRENT (A)
45
45
40
35
30
Vin = Vout(nom.) + 0.5 V
Vout(nom.) = 3.0 V
IO = 0 mA
25
20
−50
43
41
39
37
35
33
31
Vout(nom.) = 3.0 V
Vin = 5.0 V
TA = 25°C
29
27
25
−25
0
25
50
75
100
125
0
25
TEMPERATURE (°C)
450
400
35
350
CURRENT LIMIT (mA)
45
30
25
20
15
Vout(nom.) = 3.0 V
Iout = 50 mA
TA = 25°C
5
75
100
125
150
Figure 5. Ground Pin Current vs. Output Current
40
10
50
Iout, OUTPUT CURRENT (mA)
Figure 4. Quiescent Current vs. Temperature
GROUND PIN CURRENT (A)
3
TEMPERATURE (°C)
50
IQ, QUIESCENT CURRENT (A)
3.0
300
250
200
150
100
Vout(nom.) = 3.0 V
Cin = 1.0 F
50
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
Figure 6. Ground Pin Current vs. Input Voltage
Figure 7. Current Limit vs. Input Voltage
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6
NCP511
Vin, INPUT
VOLTAGE (V)
Vin, INPUT
VOLTAGE (V)
5
4
3
4
3
100
Vin = 3.5 V to 4.5 V
Vout = 3.0 V
Cout = 1 F
Iout = 1 mA
40
20
OUTPUT VOLTAGE
DEVIATION (mV)
OUTPUT VOLTAGE
DEVIATION (mV)
60
5
0
−20
−40
50
0
−50
−100
20
100 200 300 400 500 600 700 800 900
40
60
100 120 140 160 180
Figure 9. Line Transient Response
Figure 8. Line Transient Response
Vin, INPUT
VOLTAGE (V)
80
TIME (s)
TIME (s)
5
4
3
150
Cout = 1 F
Iout = 150 mA
100
OUTPUT VOLTAGE
DEVIATION (mV)
Cout = 1 F
Iout = 100 mA
Vin = 3.5 V to 4.5 V
Vout = 3.0 V
50
0
−50
−100
Vin = 3.5 V to 4.5 V
Vout = 3.0 V
−150
−200
20
40
60
80 100 120 140 160 180
TIME (s)
Iout, OUTPUT
CURRENT (mA)
Iout, OUTPUT
CURRENT (mA)
Figure 10. Line Transient Response
150
Vin = 3.5 V
Vout = 3.0 V
Cin = 1 F
Cout = 10 F
Iout = 1 mA to 150 mA
OUTPUT VOLTAGE
DEVIATION (mV)
OUTPUT VOLTAGE
DEVIATION (mV)
Vin = 3.5 V
Vout = 3.0 V
0
0
20
10
0
−10
200 400 600
150
800 1000 1200 1400 1600 1800
200
100
Cin = 1 F
Cout = 1 F
IO = 1 mA to 150 mA
0
−100
−200
200 400 600 800 1000 1200 1400 1600 1800
TIME (s)
TIME (s)
Figure 11. Load Transient Response
Figure 12. Load Transient Response
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ENABLE
VOLTAGE (V)
NCP511
2
1
0
Vin = 3.5 V
Vout = 3.0 V
TA = 25°C
Iout = 1 mA
Cin = 1 F
Vout, OUTPUT
VOLTAGE (V)
4
3
Cout = 10 F
Cout = 1 F
2
1
0
20
40
60
80
100 120 140 160 180
TIME (s)
Figure 13. Turn−On Response
70
Vout = 1.5 V
Vin = 2.5 V
Iout = 60 mA
Cout = 2.2 F
1.4
1.2
RR, RIPPLE REJECTION (dB)
OUTPUT NOISE DENSITY (V/ǠHZ)
1.6
1.0
0.8
0.6
0.4
0.2
0
0.01
0.1
1.0
10
100
1000
Vout = 3.0 V
Vin = 3.5 VDC 0.25 V
Iout = 60 mA
Cout = 1.0 F
60
50
40
30
20
10
0
100
1k
10 k
100 k
f, FREQUENCY (kHz)
f, FREQUENCY (Hz)
Figure 14. Output Noise Density
Figure 15. Ripple Rejection vs. Frequency
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1M
NCP511
DEFINITIONS
Load Regulation
Line Regulation
The change in output voltage for a change in output
current at a constant temperature.
The change in output voltage for a change in input voltage.
The measurement is made under conditions of low
dissipation or by using pulse technique such that the average
chip temperature is not significantly affected.
Dropout Voltage
The input/output differential at which the regulator output
no longer maintains regulation against further reductions in
input voltage. Measured when the output drops 3.0% below
its nominal. The junction temperature, load current, and
minimum input supply requirements affect the dropout level.
Line Transient Response
Typical over and undershoot response when input voltage
is excited with a given slope.
Thermal Protection
Internal thermal shutdown circuitry is provided to protect
the integrated circuit in the event that the maximum junction
temperature is exceeded. When activated at typically 160°C,
the regulator turns off. This feature is provided to prevent
failures from accidental overheating.
Maximum Power Dissipation
The maximum total dissipation for which the regulator
will operate within its specifications.
Quiescent Current
The quiescent current is the current which flows through
the ground when the LDO operates without a load on its
output: internal IC operation, bias, etc. When the LDO
becomes loaded, this term is called the Ground current. It is
actually the difference between the input current (measured
through the LDO input pin) and the output current.
Maximum Package Power Dissipation
The maximum power package dissipation is the power
dissipation level at which the junction temperature reaches
its maximum operating value, i.e. 125°C. Depending on the
ambient power dissipation and thus the maximum available
output current.
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NCP511
APPLICATIONS INFORMATION
Thermal
A typical application circuit for the NCP511 series is
shown in Figure 16.
As power across the NCP511 increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material and also the ambient
temperature effect the rate of temperature rise for the part.
This is stating that when the NCP511 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power dissipation applications.
The maximum dissipation the package can handle is
given by:
Input Decoupling (C1)
A 1.0 F capacitor either ceramic or tantalum is
recommended and should be connected close to the NCP511
package. Higher values and lower ESR will improve the
overall line transient response.
Output Decoupling (C2)
The NCP511 is a stable Regulator and does not require any
specific Equivalent Series Resistance (ESR) or a minimum
output current. Capacitors exhibiting ESRs ranging from a
few m up to 3.0 can thus safely be used. The minimum
decoupling value is 1.0 F and can be augmented to fulfill
stringent load transient requirements. The regulator accepts
ceramic chip capacitors as well as tantalum devices. Larger
values improve noise rejection and load regulation transient
response.
T
*TA
PD + J(max)
RJA
If junction temperature is not allowed above the
maximum 125°C, then the NCP511 can dissipate up to
400 mW @ 25°C.
The power dissipated by the NCP511 can be calculated
from the following equation:
Enable Operation
Ptot + [Vin * Ignd (Iout)] ) [Vin * Vout] * Iout
The enable pin will turn on or off the regulator. These
limits of threshold are covered in the electrical specification
section of this data sheet. If the enable is not used then the
pin should be connected to Vin.
or
P ) Vout * Iout
VinMAX + tot
Ignd ) Iout
If a 150 mA output current is needed then the ground
current from the data sheet is 40 A. For an NCP511SN30T1
(3.0 V), the maximum input voltage will then be 5.6 V.
Hints
Please be sure the Vin and GND lines are sufficiently wide.
When the impedance of these lines is high, there is a chance
to pick up noise or cause the regulator to malfunction.
Set external components, especially the output capacitor,
as close as possible to the circuit, and make leads a short as
possible.
Battery or
Unregulated
Voltage
C1
+
1
Vout
5
+
2
ON
3
ESR, OUTPUT CAPACITOR ()
100
C2
UNSTABLE
10
0.1
0.01
4
Cout = 1 F to 10 F
TA = 25°C to 125°C
Vin = up to 6.0 V
1
STABLE
0
OFF
25
50
75
100
125
150
IO, OUTPUT CURRENT (mA)
Figure 16. Typical Application Circuit
Figure 17. Output Capacitor vs. Output Current
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NCP511
APPLICATION CIRCUITS
Input
Input
Q1
R1
Q1
R2
R
Output
1
1.0 F
Q2
R3
1
1.0 F
2
3
1.0 F
Short circuit current limit is essentially set by the VBE of Q2 and
R1. ISC = ((VBEQ2 − ib * R2) / R1) + IO(max) Regulator
Output
5
1.0 F
1.0 F
2
Enable
4
3
1
Vout, Output Voltage (V)
Output
1
5
1.0 F
2
3
4
C
TA = 25°C
Vin = 3.5 V
Vout = 3.0 V
2
4
1.0 F
4
Figure 19. Current Boost Regulator
with Short Circuit Limit
Enable Voltage (V)
Input
3
1.0 F
3
The NCP511 series can be current boosted with a PNP transistor. Resistor R in conjunction with VBE of the PNP determines
when the pass transistor begins conducting; this circuit is not
short circuit proof. Input/Output differential voltage minimum is
increased by VBE of the pass resistor.
1
5
2
4
Figure 18. Current Boost Regulator
R
Output
5
0
3
R = 1.0 M
mW
C = 0.1 F
1
0
R = 1.0 M
C = 1.0 F
No Delay
2
20
0
60
40
80
100
120
140
160
Time (ms)
Figure 20. Delayed Turn−on
Figure 21. Delayed Turn−on
If a delayed turn−on is needed during power up of several voltages then the above schematic can be used. Resistor R, and
capacitor C, will delay the turn−on of the bottom regulator. A
few values were chosen and the resulting delay can be seen in
Figure 21.
Input
The graph shows the delay between the enable signal and
output turn−on for various resistor and capacitor values.
Output
Q1
R
1
1.0 F
5
1.0 F
2
3
4
5.6 V
Figure 22. Input Voltages Greater than 6.0 V
A regulated output can be achieved with input voltages that
exceed the 6.0 V maximum rating of the NCP511 series with
the addition of a simple pre−regulator circuit. Care must be
taken to prevent Q1 from overheating when the regulated
output (Vout) is shorted to GND.
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NCP511
ORDERING INFORMATION
Device
NCP511SN15T1
NCP511SN15T1G
NCP511SN18T1
NCP511SN18T1G
NCP511SN25T1
NCP511SN25T1G
NCP511SN27T1
NCP511SN27T1G
NCP511SN28T1
NCP511SN28T1G
NCP511SN30T1
NCP511SN30T1G
NCP511SN33T1
NCP511SN33T1G
NCP511SN50T1
NCP511SN50T1G
Nominal
Output Voltage
Marking
Package
Shipping †
1.5
1.5
1.8
1.8
2.5
2.5
2.7
2.7
2.8
2.8
3.0
3.0
3.3
3.3
5.0
5.0
LBU
LBU
LBV
LBV
LBW
LBW
LBX
LBX
LBY
LBY
LBZ
LBZ
LCA
LCA
LCB
LCB
TSOP−5
3000 Units/
7″ Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NOTE: Additional voltages in 100 mV steps are available upon request by contacting your ON Semiconductor representative.
http://onsemi.com
10
NCP511
PACKAGE DIMENSIONS
THIN SOT−23−5/TSOP−5/SC59−5
SN SUFFIX
CASE 483−02
ISSUE E
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES
LEAD FINISH THICKNESS. MINIMUM LEAD
THICKNESS IS THE MINIMUM THICKNESS
OF BASE MATERIAL.
4. A AND B DIMENSIONS DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
D
S
5
4
1
2
3
B
L
G
DIM
A
B
C
D
G
H
J
K
L
M
S
A
J
C
0.05 (0.002)
H
M
K
MILLIMETERS
MIN
MAX
2.90
3.10
1.30
1.70
0.90
1.10
0.25
0.50
0.85
1.05
0.013
0.100
0.10
0.26
0.20
0.60
1.25
1.55
0_
10 _
2.50
3.00
INCHES
MIN
MAX
0.1142 0.1220
0.0512 0.0669
0.0354 0.0433
0.0098 0.0197
0.0335 0.0413
0.0005 0.0040
0.0040 0.0102
0.0079 0.0236
0.0493 0.0610
0_
10 _
0.0985 0.1181
SOLDERING FOOTPRINT*
0.95
0.037
1.9
0.074
2.4
0.094
1.0
0.039
0.7
0.028
SCALE 10:1
mm Ǔ
ǒinches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
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NCP511/D