NCP1523 Datasheet PDF - ON Semiconductor
| Part Number | NCP1523 | |
| Description | Adjustable Output Voltage Stepdown Converter | |
| Manufacturers | ON Semiconductor | |
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NCP1523
3 MHz, 600 mA,
High−Efficiency, Adjustable
Output Voltage Stepdown
Converter
The NCP1523 stepdown PWM DC−DC converter is optimized for
portable applications powered from 1−cell Li−ion or 3−cell
Alkaline/NiCd/NiMH batteries. The device is available in an
adjustable output voltage from 0.9 V to 2.3 V. It uses synchronous
rectification to increase efficiency and reduce external part count. The
device also has a built−in 3 MHz (nominal) oscillator which reduces
component size by allowing a small inductor and capacitors.
Automatic switching PWM/PFM mode offers improved system
efficiency.
Finally, it includes an integrated soft−start, cycle−by−cycle current
limiting, and thermal shutdown protection. The NCP1523 is available
in a space saving, 8 pin chip scale package.
Features
• Up to 93% Efficiency
• Sources up to 600 mA
• 3 MHz Switching Frequency
• Adjustable Output Voltage from 0.9 V to 2.3 V
• 60 mA Quiescent Current
• Synchronous Rectification for Higher Efficiency.
• 2.7 V to 5.5 V Input Voltage Range
• Thermal Limit Protection
• Shutdown Current Consumption of 0.3 mA
• This is a Pb−Free Device*
Typical Applications
• Cellular Phones, Smart Phones and PDAs
• Digital Still Cameras
• MP3 Players and Portable Audio Systems
• Wireless and DSL Modems
• Portable Equipment
VIN
A2 VIN
SW B1
L
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MARKING
DIAGRAM
NCP1523G
A1 AYWW
FLIP−CHIP−8
CASE 766AE
A1
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
A1 A2
B1 B2
C1 C3
D1 D2
Top View
(Bumps Below)
PIN:
A1 − GND
A2 − VIN
B1 − SW
B2 − EN
C1 − GND
C2 − ADJ
D1 − VOUT
D2 − FB
ORDERING INFORMATION
Device
Package
Shipping†
NCP1523FCT2G FLIP−CHIP−8
(Pb−Free)
3000 /
Tape * Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
VOUT Brochure, BRD8011/D.
CIN C1
GND
VOUT D1
COUT
OFF ON
A1 GND
B2 EN
ADJ C2
FB D2
R1
Figure 1. NCP1523 Typical Applications
R2
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
August, 2006 − Rev. 0
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1
Publication Order Number:
NCP1523/D
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NCP1523
100
90
80
70
60
50
40
30
20
10
0
2.5
EN = VIN
IOUT = 0 mA
3.0 3.5 4.0 4.5 5.0
VIN, INPUT VOLTAGE (V)
Figure 4. Quiescent Current vs. Supply
Voltage
5.5
100
90
80
70
60
50
40
VIN = 5.5 V
VIN = 2.7 V
30
20
10
0
−40 10
60 110
TEMPERATURE (°C)
Figure 5. Quiescent Current vs. Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
EN = GND
IOUT = 0 mA
3.0 3.5 4.0 4.5 5.0 5.5
VIN, INPUT VOLTAGE (V)
Figure 6. Shutdown Current vs. Supply
Voltage
100
90 −40°C
80
70 25°C
60 105°C
50
40
30
1 10 100 1000
IOUT, OUTPUT CURRENT (mA)
Figure 8. Efficiency vs. Output Current
(VOUT = 0.9 V, VIN = 3.6 V)
100
90
80
70
60
50
40
30
1
100
90
80
70
60
50
40
30
1
−40°C
25°C
105°C
10 100
IOUT, OUTPUT CURRENT (mA)
Figure 7. Efficiency vs. Output Current
(VOUT = 1.8 V, VIN = 3.6 V)
1000
−40°C
105°C
25°C
10 100 1000
IOUT, OUTPUT CURRENT (mA)
Figure 9. Efficiency vs. Output Current
VOUT = 2.0 V, VIN = 3.6 V)
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for NCP1523 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ NCP1523.PDF Datasheet ] | |
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