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PDF NCP3102 Data sheet ( Hoja de datos )
| Número de pieza | NCP3102 | |
| Descripción | Wide Input Voltage Synchronous Buck Converter | |
| Fabricantes | ON Semiconductor | |
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NCP3102
Wide Input Voltage
Synchronous Buck Converter
www.datashTeheet4Nu.cCoPm3102 is a high efficiency, 10 A DC-DC buck converter
designed to operate from a 5 V to 13.2 V supply. The device is capable
of producing an output voltage as low as 0.8 V. The NCP3102 can
continuously output 10 A through MOSFET switches driven by an
internally set 275 kHz oscillator. The 40-pin device provides an
optimal level of integration to reduce size and cost of the power
supply. The NCP3102 also incorporates an externally compensated
transconductance error amplifier and a capacitor programmable
soft-start function. Protection features include programmable short
circuit protection and under voltage lockout (UVLO). The NCP3102
is available in a 40-pin QFN package.
Features
•ăInput Voltage Range from 4.5 V to 13.2 V
•ă275 kHz Internal Oscillator
•ăGreater than 90% Maximum Efficiency
•ăBoost Pin Operates to 25 V
•ăVoltage Mode PWM Control
•ă0.8 V $1% Internal Reference Voltage
•ăAdjustable Output Voltage by Resistor Divider
•ăCapacitor Programmable Soft-Start
•ă80% Maximum Duty Cycle
•ăInput Undervoltage Lockout
•ăResistor Programmable Current Limit
•ăThis is a Pb-Free Device
http://onsemi.com
QFN40
CASE 485AK
MARKING
DIAGRAM
1 40
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb-Free Package
NCP3102
AWLYYWWG
PIN CONNECTIONS
Applications
•ăServers/Networking
•ăDSP and FPGA Power Supply
•ăDC-DC Regulator Modules
Vin
PWRVCC CPHS BST
VCC
PWRPHS
NCP3102
COMP/DIS TGOUT
FB TGIN
AGND BG PWRGND
GND
Figure 1. Typical Application Diagram
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
100
Vout 95
90 VIN = 5.0 V
85
80 VIN = 12 V
75
70
65
60
55
GND
50
0 1 2 3 4 5 6 7 8 9 10
OUTPUT CURRENT (A)
Figure 2. Efficiency
©Ă Semiconductor Components Industries, LLC, 2007
November, 2007 - Rev. 2
1
Publication Order Number:
NCP3102/D
1 page  
NCP3102
TYPICAL OPERATING CHARACTERISTICS
282
281
280
279
www.datasheet4u.com
278
Vin = 4.5 V
Vin = 12 V
277
276
276
274
-25 0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Oscillator Frequency (FSW) vs.
Temperature
801.5
801
800.5
800
799.5
Vin = 12 V
Vin = 4.5 V
799
798.5
798
797.5
-25 0
25 50 75 100
TJ, JUNCTION TEMPERATURE (°C)
125
Figure 6. Reference Voltage (Vref) vs. Temperature
11
10
9
8
7
6
5
4
4.1
4
3.9
3.8
3.7
3.6
3.5
Vin = 12 V
Vin = 4.5 V
-25 0 25 50 75 100
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. ICC vs. Temperature
125
RISING
FALLING
-25 0 25 50 75 100
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. UVLO vs. Temperature
125
16 10
15 9.5
14 9
13 8.5
12 8
11 7.5
10
-25 0
25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Soft-Start Sourcing Current vs.
Temperature
7
-25 0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. I-Limit vs. Temperature
http://onsemi.com
5
5 Page 
www.datasheet4u.com
RLO10
NCP3102
PWRVCC
BG
PWRPHS
NC
COMP
FB
AGND
AGND
VCC
PWRGND
PWRGND
PWRGND
Figure 20. Schematic Diagram of NCP3102 Evaluation Board
http://onsemi.com
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet NCP3102.PDF ] | |
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