|
|
PDF NCP3120 Data sheet ( Hoja de datos )
| Número de pieza | NCP3120 | |
| Descripción | Step-Down DC/DC Switching Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de NCP3120 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
NCP3120
www.DataSheet4U.com
Dual 2.0 A, Step-Down
DC/DC Switching Regulator
The NCP3120 is a dual buck converter designed for low voltage
applications requiring high efficiency. This device is capable of
producing an output voltage as low as 0.8 V. The NCP3120 provides
dual 2.0 A switching regulators with an adjustable 200 kHz - 750 kHz
switching frequency. The switching frequency is set by an external
resistor. The NCP3120 also incorporates an auto-tracking and
sequencing feature. Protection features include cycle-by-cycle
current limit and undervoltage lockout (UVLO). The NCP3120 comes
in a 32-pin QFN package.
Features
•ăInput Voltage Range from 4.5 V to 13.2 V
•ă12 Vin to 5.0 Vout = 87% Efficiency Min @ 2.0 A
•ă200-750 kHz Operation
•ăStable with Low ESR Ceramic Output Capacitor
•ă0.8 ±1.5% FB Reference Voltage
•ăExternal Soft-Start
•ăOut of Phase Operation of OUT1 & OUT2
•ăAuto-Tracking and Sequencing
•ăEnable/Disable Capability
•ăHiccup Overload Protection
•ăLow Shutdown Power (Iq < 100 mA)
http://onsemi.com
1 32
QFN32
CASE 488AM
MARKING DIAGRAM
1
NCP3120
AWLYYWWG
G
NCP3120 = Specific Device Code
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 38 of this data sheet.
Typical Applications
•ăSet-Top Boxes, Portable Applications, Networking and
Telecommunications
•ăDSP/mP/FPGA Core
VIN
RVIN
R_TRACK
PG1
PG2
Enable
Disable
EN1
Enable
Disable
EN2
R14
R24
C3
GND
PG1
PG2
EN1
SEQ1
EN2
SEQ2
TRACK1,2
NCP3120
SW1
VIN
SW2
L11
D11
GND
C1
GND
L21
D21
C2
GND
C12 GND
RT C22
R23 R13
GND
C23 GND
C13
GND
GND
Figure 1. Typical Application Circuit
OUT1
R11
C11
R12 GND
GND
OUT2
R21
C21
GND
R22
GND
©Ă Semiconductor Components Industries, LLC, 2008
January, 2008 - Rev. 0
1
Publication Order Number:
NCP3120/D
1 page  
NCP3120
www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS (-40°C < TJ < 125°C, TJ = 25°C for typical values, VAVIN =12 V, VVIN =12 V, unless otherwise
noted. RT = open kW)
Characteristic
Conditions
Min Typ Max Unit
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
4.5 13.2 V
SUPPLY CURRENT
Quiescent Supply Current
VEN = H, VFB = 1.0 V
No Switching, PG open
5.0 7.0 mA
Shutdown Supply Current
UNDERVOLTAGE LOCKOUT
VEN = 0 V, PG open
100 mA
UVLO Threshold
UVLO Hysteresis
VIN Rising Edge
VIN Falling Edge
4.3 4.5 V
3.9 4.1
0.15 0.20 0.25 V
SWITCHING REGULATOR
Minimum Duty Cycle
Comp = 0.6 V
0%
Maximum Duty Cycle
Comp = 2.6 V
90
%
High Side MOSFET RDS(on)
High Side Leakage Current
High Side Switch Current Limit Set Point
ISW = 0.5 A, TJ = 25°C
VEN = 0V, VSW = 0V
(Note 3)
250 mW
10 mA
2.6 3.2 3.8 A
Current Loop Transient Response
(Note 4)
100 nsec
FB
VFB Feedback Voltage
OSC
TJ = 25°C
TJ = -40 to 125°C,
4.5 V < VIN < 13.2V
0.788
0.8
0.812
V
0.784 - 0.816
Oscillator Frequency
TJ = 25°C,
TJ = -40 to 125°C
180 200 220 kHz
170 200 230 kHz
TJ = 25°C, TJ = -40 to 125°C
(RT = 52.3 kW)
635 750 865 kHz
Standard Oscillator Frequency Range
TRANSCONDUCTANCE ERROR AMPLIFIER (GM)
TJ = 25°C
200
750 kHz
Transconductance
(Note 4)
0.9 1.0 1.1 ms
DC Gain
(Note 4)
50 55 60 dB
Unity Gain Bandwidth
(Note 4)
4.0 MHz
Output Sink Current
Output Source Current
Input Bias Current
Comp Pin Operating Voltage Range
VFB = 1.0 V, Vcomp = 1.5 V
VFB = 0.6 V, Vcomp = 1.5 V
VFB = 0.8 V
(Note 4)
80 100
mA
80 100
mA
100 500 nA
0.6 2.6 V
SOFT-START
Soft-Start Period
Soft-Start Voltage Range
Soft-Start Current Source
VFB < 0.8 V, CS = 0.1 mF
Charging, VSS = 1 V
Discharging, VSS = 1 V
10 ms
0 VFB V
6.5 8.75
6.5 8.75
11 mA
11 mA
http://onsemi.com
5
5 Page 
NCP3120
TYPICAL OPERATING CHARACTERISTICS
www.DataSheet4U.com
85
220 kHz
80
750 kHz
75
530 kHz
5V
70
65
60
55
0 0.5 1.0 1.5 2.0
Iout (A)
Figure 25. NCP3120 Efficiency,
Vin = 5 V, Vout = 1.8 V, 255C
95
220 kHz
90
530 kHz
85
750 kHz
5V
80
75
70
65
0 0.5 1.0 1.5 2.0
Iout (A)
Figure 27. NCP3120 Efficiency,
Vin = 5 V, Vout = 3.3 V, 255C
0.50
90
85
220 kHz
80
75
530 kHz
12 V
70
750 kHz
65
60
55
0 0.5 1.0 1.5 2.0
Iout (A)
Figure 26. NCP3120 Efficiency,
Vin = 12 V, Vout = 3.3 V, 255C
93
91
89
220 kHz
87
12 V
85
83
500 kHz
81
79
77 750 kHz
75
0 0.5 1.0 1.5
Iout (A)
Figure 28. NCP3120 Efficiency,
Vin = 12 V, Vout = 5 V, 255C
2.0
0.45
0.40
0.35
0.30
0.25
0.20
4
5 6 7 8 9 10 11 12 13 14
Vin = AVin (V)
Figure 29. RDS(on) vs. Input Voltage
http://onsemi.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet NCP3120.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| NCP3120 | Step-Down DC/DC Switching Regulator | ON Semiconductor |
| NCP3121 | Step-Down DC/DC Switching Regulator | ON Semiconductor |
| NCP3122 | Step-Down DC/DC Switching Regulator | ON Semiconductor |
| NCP3123 | Step-Down DC/DC Switching Regulator | ON Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |