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PDF NCP1586 Data sheet ( Hoja de datos )
| Número de pieza | NCP1586 | |
| Descripción | Low Voltage Synchronous Buck Controller | |
| Fabricantes | ON Semiconductor | |
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NCP1586
Low Voltage Synchronous
Buck Controller
The NCP1586 is a low cost PWM controller designed to operate
from a 5 V or 12 V supply. This device is capable of producing an
output voltage as low as 0.8 V. This 8−pin device provides an optimal
level of integration to reduce size and cost of the power supply. The
NCP1586 provides a 1 A gate driver design and an internally set
275 kHz oscillator. In addition to the 1 A gate drive capability, other
efficiency enhancing features of the gate driver include adaptive
non−overlap circuitry. The NCP1586 also incorporates an externally
compensated error amplifier and a capacitor programmable soft−start
function. Protection features include programmable short circuit
protection and under voltage lockout (UVLO). The NCP1586 comes
in an 8−pin SOIC package.
Features
• Input Voltage Range from 4.5 to 13.2 V
• 275 kHz Internal Oscillator
• Boost Pin Operates to 26.5 V
• Voltage Mode PWM Control
• 0.8 V ±1.0 % Internal Reference Voltage
• Adjustable Output Voltage
• Capacitor Programmable Soft−start
• Internal 1 A Gate Drivers
• 80% Max Duty Cycle
• Input Under Voltage Lockout
• Programmable Current Limit
• This is a Pb−Free Device
Applications
• Graphics Cards
• Desktop Computers
• Servers / Networking
• DSP & FPGA Power Supply
• DC−DC Regulator Modules
http://onsemi.com
MARKING DIAGRAM
8
1
8
SOIC−8
D SUFFIX
CASE 751
1586
ALYW
G
1
1586 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Device
PIN CONNECTIONS
BST 1
TG 2
GND 3
BG 4
8 PHASE
7 COMP/DIS
6 FB
5 VCC
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP1586DR2G SOIC−8 2500/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 Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2007
March, 2007 − Rev. 0
1
Publication Order Number:
NCP1586/D
1 page  
NCP1586
TYPICAL CHARACTERIZATION CURVES
(TA = 25°C unless otherwise noted)
278
VCC = 12 V
277
276 VCC = 5.0 V
275
274
273
272
0
25 50
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Oscillator Frequency (fSW) vs.
Temperature
75
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0
20 40
60
TJ, JUNCTION TEMPERATURE (°C)
80
Figure 4. Quiescent Current (ICC) vs. Temperature
808
806
804
802
800
798
796
794
792
0
20 40 60
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Reference Voltage (VREF) vs.
Temperature
80
14
13
12
11
10
9
8
0 20 40 60 80
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Soft−Start Sourcing Current (tSS) vs.
Temperature
http://onsemi.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NCP1586.PDF ] | |
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