NCP1406 PDF даташит
Спецификация NCP1406 изготовлена «ON Semiconductor» и имеет функцию, называемую «PFM Step Up DC-DC Converter». |
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Детали детали
Номер произв | NCP1406 |
Описание | PFM Step Up DC-DC Converter |
Производители | ON Semiconductor |
логотип |
19 Pages
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NCP1406, NCV1406
25 V/25 mA PFM Step-Up
DC-DC Converter
The NCP1406 is a monolithic step−up DC−DC converter operating
in a Pulse Frequency Modulation (PFM) scheme with constant peak
current control. It integrates a 0.8 A, 0.7 W internal power switch and
sensing resistor to monitor inductor current. This control scheme
maintains high efficiencies over the entire load current range. The
wide input voltage range, from 1.4V to 5.5 V, enables the user to
operate the device from a Li−Ion battery or a two−cell Alkaline
NiMH. Its ability to boost voltages up to 25 V, and to provide 1 W
output power, makes the NCP1406 the perfect solution for biasing
small and large OLED panels. This device also makes a perfect
solution for biasing a great number of white LEDs in series. A Chip
Enable pin allows the user to control the device to extend the battery
life during standby, and can be pulse−width modulated for white
LED applications. The versatility of the NCP1406 allows it to be
configured not only as a step−up converter, but also as an inverter and
as a step−down converter. This solution is proposed in a
space−saving TSOP−5 package.
Features
• 87% Efficiency at VOUT = 25 V, IOUT = 25 mA, VIN = 5 V
• Adjustable Output Voltage up to 25 V
• 0.8 A, 26 V Internal Power Switch
• Operating Input Voltage from 1.4 V to 5.5 V
• Low Startup Voltage of 1.8 V Typical at No Load
• Low Operating Current of 15 mA (Not Switching)
• Low Shutdown Current of 0.3 mA
• Operating Switching Frequency up to 1 MHz
• Output Voltage Soft−Start
• Thermal Shutdown Protection
• These are Pb−Free Devices
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
Typical Applications
• LCD Bias Supplies
• Small and Large OLED Display Drivers
• White LED Driver for Backlight Displays
• Personal Digital Assistants (PDA)
• Portable Applications:
♦ Cell Phones, Digital Cameras
♦ PDAs, Games, and Portable Video Players
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1
TSOP−5/SOT23−5/SC59−5
SN SUFFIX
CASE 483
MARKING
DIAGRAM
5
XXX AYW G
G
1
DAM
AET
A
= Device Marking − NCP1406
= Device Marking − NCV1406
= Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
CE 1
5 LX
FB 2
VDD 3
4 GND
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP1406SNT1G TSOP−5 3000 Tape & Reel
(Pb−Free)
NCV1406SNT1G TSOP−5 3000 Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2012
October, 2012 − Rev. 6
1
Publication Order Number:
NCP1406/D
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NCP1406, NCV1406
VIN
2.4 V
L
8.2 mH
D
SUMIDA
CR43−8R2MC
CIN
10 mF
Enable
LX
VDD
FB
CE
GND
VOUT
15 V
CC
68 pF
R2
1.3 mW
R1
110 kW
COUT
4.7 mF
Figure 1. Typical Application Circuit
100
3.7 V
4.2 V
5.0 V
90
3.0 V
80 2.4 V
VIN = 2.0 V
70
VOUT = 15 V
L1 = 8.2 mH, Sumida
CR43−8R2MC
C1 = 10 mF
C2 = 4.7 mF
C3 = 68 pF
TA = 25°C
Figure 4
600 20 40 60 80
IOUT, OUTPUT CURRENT (mA)
Figure 2. Efficiency versus Output Current
VIN
2.0 V to 5.5 V
C1
10 mF
Enable
L1 8.2 mH
CE
1
FB
2
VDD
3
LX
5
GND
4
D1 MBR0530T1
VOUT
25 V
C2
3.3 mF
C3
82 pF
R1 2.2 MW
R2 110 kW
ǒ ǓVOUT + 1.19
R1
R2
)
1
Figure 3. Typical 25 V Step−Up Application Circuit
VIN
2.0 V to 5.5 V
C1
10 mF
Enable
L1 8.2 mH
CE
1
FB
2
VDD
3
LX
5
GND
4
D1 MBR0520T1
VOUT
15 V
C2
4.7 mF
C3
68 pF
R1 1.3 MW
R2 110 kW
ǒ ǓVOUT + 1.19
R1
R2
)
1
Figure 4. Typical 15 V Step−Up Application Circuit
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2
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NCP1406, NCV1406
VIN
2.0 V to 5.5 V
C1
10 mF
Enable
L1 8.2 mH
CE
1
FB
2
VDD
3
LX
5
GND
4
D1 MBR0520T1
VOUT
8V
C2
4.7 mF
C3
12 pF
R1 620 kW
R2 110 kW
ǒ ǓVOUT + 1.19
R1
R2
)
1
Figure 5. Typical 8 V Step−Up Application Circuit
VDD
UVLO
Thermal
Shutdown
LX
Current Sense
TSD CS
FB
-
+
PFM
Driver
PFM
Comparator
EN FB_P
Bandgap
1.2 V
Soft−Start Enable
FB Fault
Protection
CE
Figure 6. Representative Block Diagram
GND
PIN FUNCTION DESCRIPTION
Pin Symbol
Description
1 CE Chip Enable Pin
(1) The chip is enabled if a voltage which is equal to or greater than 0.9 V is applied.
(2) The chip is disabled if a voltage which is less than 0.3 V is applied.
(3) The chip will be enabled if it is left floating.
2 FB Output feedback voltage. Connected to the inverting input of the PFM comparator.
3
VDD
Power supply pin for internal circuit
4
GND
Analog and power ground pin
5 LX External inductor connection pin. Connected to the drain of the NMOS internal switch.
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