NCP5426/D [ETC]
LDO Regulator/Vibration Motor Driver ; LDO稳压器/振动电机驱动器\n
| 型号： | NCP5426/D |
| 厂家： | 
ETC |
| 描述： | LDO Regulator/Vibration Motor Driver
|
| 文件： | 总12页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
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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.
1
TSOP–5
SN SUFFIX
CASE 483
Features
PIN CONNECTIONS AND
MARKING DIAGRAM
• 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
1
2
Enable
Gnd
5
V
in
N/C
3
4
V
out
Typical Applications
xxx = Version
Y
W
= Year
= Work Week
• Vibration Motor Driver
(Top View)
V
V
out
in
ORDERING INFORMATION
4
5
1
UVLO
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
Driver w/
Current
Limit
Thermal
Shutdown
Enable
ON
OFF
2
Gnd
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
1
Publication Order Number:
June, 2001 – Rev. 0
NCP5426/D
NCP5426
DETAILED PIN DESCRIPTION
Pin
Name
Description
1
Enable
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.
2
3
4
5
GND
N/C
Vout
Vin
Ground pin.
This pin is not connected to the device.
Regulated output voltage.
Input voltage.
MAXIMUM RATINGS
Rating
Symbol
Value
12
Unit
V
Max Voltage, All Pins
V
MAX
Power Dissipation to Air
P
150
mW
mW
°C
A
Power Dissipation, Board Mounted
Operating and Storage Temperature
Thermal Resistance
P
600
T
A
–40 to 85
300
T
JA
°C/W
°C
Junction Temperature
T
125
J
ELECTRICAL CHARACTERISTICS (T = 25°C, for min/max values T is the operating junction temperature that applies,
A
A
V
CC
= 3.5 V, unless otherwise noted.)
Characteristic
Symbol
Min
–
Typ
–
Max
12
2.8
2.2
600
240
160
0.1
–
Unit
V
Operating Voltage
Operating Voltage Turn On, I = 30 mA, Increasing V
V
CC
V
CCON
–
2.6
2.1
500
120
80
V
out
CC
Operating Voltage Turn Off, I = 30 mA, Decreasing V
V
2.0
400
–
V
out
CC
CCOFF
Operating Voltage Hysteresis, I = 30 mA
V
mV
µA
out
CC(hyst)
Operating Current No Load
I
CC
CC(uvlo)
Operating Current, V = 1.8 V, Enable High
I
–
µA
CC
Operating Current, Enable Low
I
–
–
µA
CC(off)
out(max)
Maximum Output Current, V = 0.95 *V
I
150
–
–
mA
mA
mV
mV
dB
out
nom
Over Current Protection, V = 0 V
I
270
30
–
out
out(limit)
Load Regulation, V = 3.5 V, I 1.0 to 100 mA
Reg
load
–
60
20
–
in
out
Line Regulation, I = 30 mA, V 3.0 to 5.0 V
Reg
line
–
10
out
in
Ripple Rejection, V 3.5 V, f 120 Hz, V 1.0 V, I 30 mA
RR
55
–
70
in
pp
out
Temperature Shutdown
T
std
150
200
–
°C
V
CC
Low Detector Temperature Coefficient, I = 30 mA,
DV H to L/DT
–
–
ppm/°C
out
CC
T = –40 to 85°C
V
Temperature Coefficient
DV /DT
–
1.6
–
100
–
–
–
ppm/°C
out
o
Enable Pin High Threshold
Enable Pin Low Threshold
V
eh
V
V
V
el
–
0.4
10
Enable Pin Current, V = 1.6 V
l
e
–
5.0
µA
e
–1.3 Volt
Output Voltage, I = 30 mA
V
out
1.261
1.3
1.339
V
out
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NCP5426
20
16
12
8
1.4
1.2
V
= 3.5 V
in
V = 2.5 V
e
V
out
= 1.3 V
C
= 1.0 mF
out
1.0
0.8
4
0
0.6
0.4
0.2
0
–4
–8
–12
–16
–20
V
= 3.5 V
in
V = 2.5 V
e
V
= 1.3 V
out(nom)
0
25
50
75
100
125
150
0
50
100
150
200
250
300
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
Figure 2. Load Regulation NCP5426
Figure 3. Current Limit NCP5426
140
138
2.7
V
= 3.5 V
= 0 mA
in
I
out
2.6
2.5
2.4
2.3
2.2
2.1
2.0
136
134
132
130
128
126
124
122
120
V
= 1.3 V
out(nom)
V
ON
th
V = V
e
in
V
th
OFF
118
–50
–25
0
25
50
75
100
125
–50
10
60
125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 4. Quiescent Current vs. Temperature
Figure 5. Undervoltage Lockout vs.
Temperature
90
80
70
60
50
40
30
50
0
V
= 3.5 V
= 1.3 V
= 1.0 mA
in
V
out
I
out
C
= 1.0 µF
out
V = 2.5 V
e
I
= 1 mA to 150 mA
out
150
V
V
C
= 3.5 V
= 1.3 V
= 4.7 µF
in
20
10
0
out
in
C
= 4.7 µF
out
0
100 200 300 400 500 600 700 800 900 1000
100
1 k
10 k
100 k
1 M
TIME (µs)
FREQUENCY (Hz)
Figure 7. Load Transient Response
Figure 6. Ripple Rejection vs. Frequency
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NCP5426
4.00
3.75
3.50
3.25
3.00
7.00
6.75
6.50
6.25
6.00
V
= 3.5 V
V = 3.5 V
in
V = 2.5 V
e
in
V = 1.6 V
e
I
= 30 mA
I
= 30 mA
out
out
–50
–25
0
50
75
100
125
–50
–25
0
50
75
100
125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 8. Enable Current vs. Temperature
Figure 9. Enable Current vs. Temperature
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0
V
V
= 3.5 V
= 1.3 V
in
1.3 V
out
50 ms/div
V
out
0
100 mA
I
out
V
= 1.3 V
= 30 mA
= 1 µF
out
0
I
out
C
out
3
6
9
12
V
in
(V)
C = C = 4.7 mF
in out
Figure 10. Line Regulation
Figure 11. Resistive Transient Response for
Switching the Enable Pin, Rout – 13 Ohms
V
= 3.5 V
= 1.3 V
in
1.3 V
V
out
100 ms/div
V
out
0
50 mA
I
out
0 mA
C
= C = 4.7 mF
out
in
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
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.
Output Noise Voltage
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 mVRMS or nV√Hz.
Quiescent Current
Maximum Package Power Dissipation
The power dissipation level at which the junction
temperature reaches its maximum operating value, i.e.
125°C.
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.
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NCP5426
APPLICATIONS INFORMATION
The following description will assist the system designer
The maximum dissipation the package can handle is
given by:
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
*T
A
qJA
J(max)
PD +
R
T is not recommended to exceed 125°C. The NCP5426
J
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.
[
]
(I ) ) V * V
in gnd out in
[
]
P
+ V * I
* I
tot
out out
or
)
*
I
P
tot
+
V
out out
) I
V
inMAX
I
gnd
out
Output Decoupling
If a 150 mA output current is needed then the ground
current is extracted from the data sheet curves: 200 mA @
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
Gnd
V
in
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.
Vibration
Motor
C1
V
CC
N/C
V
out
C2
Figure 13. Typical Applications Circuit
for Driving a Vibration Motor
V
CCON
V
CCHYST
V
CC
V
CCOFF
V
out
Resistive Load
V
out
Motor Load
Figure 14. Timing Diagram
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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
inches
mm
TSOP–5
(Footprint Compatible with SOT23–5)
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NCP5426
ORDERING INFORMATION
Nominal
Output Voltage*
Device
Marking
Package
Shipping
3000 Units/
7″ Tape & Reel
NCP5426SN13T1
1.3
LDZ
TSOP–5
*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.
D
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
5
4
3
B
C
S
1
2
MILLIMETERS
DIM MIN MAX
INCHES
MIN MAX
L
G
A
B
C
D
G
H
J
2.90
1.30
0.90
0.25
0.85
0.013
0.10
0.20
1.25
0
3.10 0.1142 0.1220
1.70 0.0512 0.0669
1.10 0.0354 0.0433
0.50 0.0098 0.0197
1.00 0.0335 0.0413
0.100 0.0005 0.0040
0.26 0.0040 0.0102
0.60 0.0079 0.0236
1.55 0.0493 0.0610
A
J
0.05 (0.002)
K
L
H
M
K
M
S
10
0
3.00 0.0985 0.1181
10
_
_
_
_
2.50
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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.
SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
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
SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable
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:
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Literature Distribution Center for ON Semiconductor
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: ONlit@hibbertco.com
Email: r14525@onsemi.com
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
NCP5426/D
相关型号：
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