ETC NCP5426/D

NCP5426
Advance Information
LDO Regulator/Vibration
Motor Driver
The NCP5426 series of fixed output, 150 mA low dropout linear
regulators are designed to be an economical solution for a variety of
applications. Each device contains a voltage reference unit, an error
amplifier, a PNP power transistor, resistors for setting output voltage,
an under voltage lockout on the input, an enable pin, and current limit
and temperature limit protection circuits.
The NCP5426 is designed for driving a vibration motor using
ceramic capacitors on the output. The device is housed in the
micro–miniature TSOP–5 surface mount package. The NCP5426 is
available in output voltages of 1.2 to 2.0 volts in 0.1 volt increments.
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1
TSOP–5
SN SUFFIX
CASE 483
Features
Wide Operating Voltage Range to 12 Volts
Internally Set Output Voltages
Enable Pin for On/Off Control
UVLO on the Input Voltage with Hysteresis
Current and Thermal Protection
Compatible with Ceramic, Tantalum or Aluminum Electrolytic
Capacitors
Typical Applications
PIN CONNECTIONS AND
MARKING DIAGRAM
Enable
1
Gnd
2
N/C
3
5
Vin
4
Vout
xxxYW
•
•
•
•
•
•
xxx = Version
Y = Year
W = Work Week
• Vibration Motor Driver
(Top View)
Vin
Vout
4
5
UVLO
Thermal
Shutdown
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
Driver w/
Current
Limit
Enable
ON
1
OFF
Gnd
2
This device contains 47 active transistors.
Figure 1. Internal Schematic
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
 Semiconductor Components Industries, LLC, 2001
June, 2001 – Rev. 0
1
Publication Order Number:
NCP5426/D
NCP5426
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DETAILED PIN DESCRIPTION
Pin
Name
Description
1
Enable
2
GND
Ground pin.
3
N/C
This pin is not connected to the device.
4
Vout
Regulated output voltage.
5
Vin
Input voltage.
The enable pin allows the user to control the output. A low signal disables the output and places the device
into a low current standby mode.
MAXIMUM RATINGS
Rating
Symbol
Max Voltage, All Pins
Value
Unit
VMAX
12
V
Power Dissipation to Air
PA
150
mW
Power Dissipation, Board Mounted
P
600
mW
Operating and Storage Temperature
TA
–40 to 85
°C
Thermal Resistance
TJA
300
°C/W
Junction Temperature
TJ
125
°C
ELECTRICAL CHARACTERISTICS (TA = 25°C, for min/max values TA is the operating junction temperature that applies,
VCC = 3.5 V, unless otherwise noted.)
Characteristic
Operating Voltage
Symbol
Min
Typ
Max
Unit
VCC
–
–
12
V
Operating Voltage Turn On, Iout = 30 mA, Increasing VCC
VCCON
–
2.6
2.8
V
Operating Voltage Turn Off, Iout = 30 mA, Decreasing VCC
VCCOFF
2.0
2.1
2.2
V
Operating Voltage Hysteresis, Iout = 30 mA
VCC(hyst)
400
500
600
mV
ICC
–
120
240
µA
ICC(uvlo)
–
80
160
µA
ICC(off)
–
–
0.1
µA
Maximum Output Current, Vout = 0.95 *Vnom
Iout(max)
150
–
–
mA
Over Current Protection, Vout = 0 V
Iout(limit)
–
270
–
mA
Load Regulation, Vin = 3.5 V, Iout 1.0 to 100 mA
Regload
–
30
60
mV
Line Regulation, Iout = 30 mA, Vin 3.0 to 5.0 V
Regline
–
10
20
mV
Ripple Rejection, Vin 3.5 V, f 120 Hz, Vpp 1.0 V, Iout 30 mA
RR
55
70
–
dB
Temperature Shutdown
Tstd
–
150
–
°C
VCC H to L/T
–
200
–
ppm/°C
Vo/T
–
100
–
ppm/°C
Enable Pin High Threshold
Veh
1.6
–
–
V
Enable Pin Low Threshold
Vel
–
–
0.4
V
Enable Pin Current, Ve = 1.6 V
le
–
5.0
10
µA
Vout
1.261
1.3
1.339
V
Operating Current No Load
Operating Current, VCC = 1.8 V, Enable High
Operating Current, Enable Low
VCC Low Detector Temperature Coefficient, Iout = 30 mA,
T = –40 to 85°C
Vout Temperature Coefficient
–1.3 Volt
Output Voltage, Iout = 30 mA
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NCP5426
20
1.4
Vin = 3.5 V
Ve = 2.5 V
Vout = 1.3 V
Cout = 1.0 F
12
8
1.2
OUTPUT VOLTAGE (V)
LOAD REGULATION (mV)
16
4
0
–4
–8
–12
1.0
0.8
0.6
0.4
0.2
–16
–20
0
25
50
75
100
0
150
0
50
100
150
200
250
OUTPUT CURRENT (mA)
Figure 2. Load Regulation NCP5426
Figure 3. Current Limit NCP5426
136
134
300
2.7
Vin = 3.5 V
Iout = 0 mA
Vout(nom) = 1.3 V
Ve = Vin
2.6
Vth ON
2.5
132
UVLO (V)
QUIESCENT CURRENT (A)
125
OUTPUT CURRENT (mA)
140
138
130
128
126
124
2.4
2.3
2.2
122
2.1
120
Vth OFF
0
–25
25
50
75
100
125
2.0
–50
10
60
125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 4. Quiescent Current vs. Temperature
Figure 5. Undervoltage Lockout vs.
Temperature
90
Vin = 3.5 V
Vout = 1.3 V
Iout = 1.0 mA
Cout = 1.0 µF
Ve = 2.5 V
80
70
60
50
OUTPUT VOLTAGE
DEVIATION (mV)
118
–50
50
0
Iout = 1 mA to 150 mA
40
Iout, OUTPUT
CURRENT (mA)
RIPPLE REJECTION (dB)
Vin = 3.5 V
Ve = 2.5 V
Vout(nom) = 1.3 V
30
20
10
0
100
1k
10 k
100 k
1M
150
Vin = 3.5 V
Vout = 1.3 V
Cin = 4.7 µF
Cout = 4.7 µF
0
100 200 300 400 500 600
700 800 900 1000
FREQUENCY (Hz)
TIME (µs)
Figure 6. Ripple Rejection vs. Frequency
Figure 7. Load Transient Response
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NCP5426
7.00
ENABLE CURRENT (µA)
ENABLE CURRENT (µA)
4.00
3.75
3.50
3.25
3.00
–50
Vin = 3.5 V
Ve = 1.6 V
Iout = 30 mA
–25
0
50
100
75
6.75
6.50
6.25
Vin = 3.5 V
Ve = 2.5 V
Iout = 30 mA
6.00
–50
125
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 8. Enable Current vs. Temperature
Figure 9. Enable Current vs. Temperature
0.90
Vin = 3.5 V
Vout = 1.3 V
50 s/div
0.80
LINE REGULATION (mV)
0
–25
0.70
1.3 V
Vout
0.60
0.50
0
0.40
100 mA
0.30
Iout
0.20
Vout = 1.3 V
Iout = 30 mA
Cout = 1 µF
0.10
0
0
3
6
9
12
Cin = Cout = 4.7 F
Vin (V)
Figure 10. Line Regulation
Figure 11. Resistive Transient Response for
Switching the Enable Pin, Rout – 13 Ohms
Vin = 3.5 V
Vout = 1.3 V
100 ms/div
1.3 V
Vout
0
50 mA
Iout
0 mA
Cin = Cout = 4.7 F
Figure 12. Transient Response for Switching
the Enable Pin, Vibration Motor Load
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NCP5426
DEFINITIONS
Load Regulation
Line Regulation
The change in output voltage for a change in output load
current at a constant temperature and input voltage.
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 2.0% 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
This is the integrated value of the output noise over a
specified frequency range. Input voltage and output load
current are kept constant during the measurement. Results
are expressed in VRMS or nV√Hz.
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 150°C,
the regulator turns off. This feature is provided to prevent
failures from accidental overheating.
Quiescent Current
Maximum Package Power Dissipation
The current which flows through the ground pin when the
regulator 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.
The power dissipation level at which the junction
temperature reaches its maximum operating value, i.e.
125°C.
Output Noise Voltage
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NCP5426
APPLICATIONS INFORMATION
The maximum dissipation the package can handle is
given by:
The following description will assist the system designer
to correctly use the NCP5426 in an application. The
NCP5426 is designed specifically for use with inductive
loads, typically Vibration Motors. The LDO is capable of
using ceramic and tantalum capacitors. Please refer to
Figure 13 for a typical system schematic.
T
TA
PD J(max)
RJA
TJ is not recommended to exceed 125°C. The NCP5426
can dissipate up to 400 mW @ 25°C. The power dissipated
by the NCP5426 can be calculated from the following
equation:
Input Decoupling
A capacitor, C1, is necessary on the input for normal
operation. A ceramic or tantalum capacitor with a minimum
value of 1.0 µF is required. Higher values of capacitance and
lower ESR will improve the overall line and load transient
response.
Ptot [Vin * Ignd (Iout)] [Vin Vout] * Iout
or
P Vout * Iout
VinMAX tot
Ignd Iout
Output Decoupling
If a 150 mA output current is needed then the ground
current is extracted from the data sheet curves: 200 A @
150 mA. For an NCP5426SN18T1 (1.8 V), the maximum
input voltage will then be 4.4 V, good for a 1 Cell Li–ion
battery.
A capacitor, C2, is required for the NCP5426 to operate
normally. A ceramic or tantalum capacitor will suffice. The
selection of the output capacitor is dependant upon several
factors: output current, power up and down delays, inductive
kickback during power up and down. It is recommended the
output capacitor be as close to the output pin and ground pin
for the best system response.
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 as short as
possible.
Enable Pin
The enable pin will turn on or off the regulator. The enable
pin is active high. The internal input resistance of the enable
pin is high which will keep the current very low when the pin
is pulled high. A low threshold voltage permits the
NCP5426 to operate directly from microprocessors or
controllers.
ON
OFF
Thermal
Enable
As power across the NCP5426 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 the ambient temperature
effect the rate of junction temperature rise for the part. This
is stating that when the NCP5426 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power dissipation applications.
VCC
Vin
Gnd
N/C
Vibration
Motor
C1
Vout
C2
Figure 13. Typical Applications Circuit
for Driving a Vibration Motor
VCCON
VCCOFF
Vout Resistive Load
Vout Motor Load
Figure 14. Timing Diagram
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VCCHYST
VCC
NCP5426
MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS
Surface mount board layout is a critical portion of the
total design. The footprint for the semiconductor packages
must be the correct size to insure proper solder connection
interface between the board and the package. With the
correct pad geometry, the packages will self align when
subjected to a solder reflow process.
0.094
2.4
0.037
0.95
0.074
1.9
0.037
0.95
0.028
0.7
0.039
1.0
TSOP–5
(Footprint Compatible with SOT23–5)
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7
inches
mm
NCP5426
ORDERING INFORMATION
Device
NCP5426SN13T1
Nominal
Output Voltage*
Marking
Package
Shipping
1.3
LDZ
TSOP–5
3000 Units/
7″ Tape & Reel
*Contact your ON Semiconductor sales representative for other Output Voltage options.
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NCP5426
PACKAGE DIMENSIONS
TSOP–5
SN SUFFIX
PLASTIC PACKAGE
CASE 483–01
ISSUE A
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.
D
S
5
4
1
2
3
B
L
G
A
J
C
0.05 (0.002)
H
M
K
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9
DIM
A
B
C
D
G
H
J
K
L
M
S
MILLIMETERS
MIN
MAX
2.90
3.10
1.30
1.70
0.90
1.10
0.25
0.50
0.85
1.00
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
NCP5426
Notes
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NCP5426
Notes
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NCP5426
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All 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 nor the rights of others.
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intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or
death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold
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attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
Literature Fulfillment:
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P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada
Email: [email protected]
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4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Email: [email protected]
ON Semiconductor Website: http://onsemi.com
For additional information, please contact your local
Sales Representative.
N. American Technical Support: 800–282–9855 Toll Free USA/Canada
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NCP5426/D