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부품번호 | NCV890230 기능 |
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기능 | 2MHz Automotive Buck Switching Regulator | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 18 페이지수
NCV890230
2 A, 2 MHz Automotive
Buck Switching Regulator
The NCV890230 is a fixed−frequency, monolithic, Buck switching
regulator intended for Automotive, battery−connected applications
that must operate with up to a 36 V input supply. The regulator is
suitable for systems with low noise and small form factor
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requirements often encountered in automotive driver information
systems. The NCV890230 is capable of converting the typical 4.5 V to
18 V automotive input voltage range to outputs as low as 3.3 V at a
constant switching frequency above the sensitive AM band,
MARKING
DIAGRAM
8
eliminating the need for costly filters and EMI countermeasures. The
V890230
NCV890230 also provides several protection features expected in
Automotive power supply systems such as current limit, short circuit
protection, and thermal shutdown. In addition, the high switching
frequency produces low output voltage ripple even when using small
8
1
SOIC−8 EP
CASE 751AC
ALYWX
G
1
inductor values and an all−ceramic output filter capacitor − forming a
space−efficient switching regulator solution.
A = Assembly Location
L = Wafer Lot
Y = Year
Features
• Internal N−Channel Power Switch
W = Work Week
G = Pb−Free Device
• Low VIN Operation Down to 4.5 V
• High VIN Operation to 36 V
• Withstands Load Dump to 45 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
• 2 MHz Free−running Switching Frequency
• Logic level Enable Input Can be Directly Tied to Battery
• 2.2 A (min) Cycle−by−Cycle Peak Current Limit
• Short Circuit Protection enhanced by Frequency Foldback
• ±1.75% Output Voltage Tolerance
• Output Voltage Adjustable Down to 0.8 V
• 1.4 Millisecond Internal Soft−Start
• These Devices are Pb−Free and are RoHS Compliant
• Thermal Shutdown (TSD)
Applications
• Low Shutdown Current
• Audio
• NCV Prefix for Automotive and Other Applications
• Infotainment
Requiring Unique Site and Control Change
• Safety − Vision Systems
Requirements; AEC−Q100 Qualified and PPAP
Capable
• Instrumentation
VIN
CIN
EN
CDRV
NCV890230
1 VIN
SW 8
2 DRV
BST 7
3 GND
FB 6
4 EN COMP 5
DBST
CBST
L1
DFW
RFB1
VOUT
COUT
RCOMP
CCOMP
RFB2
Figure 1. Typical Application
© Semiconductor Components Industries, LLC, 2014
October, 2014 − Rev. 2
1
Publication Order Number:
NCV890230/D
NCV890230
VIN
DRV
GND
EN
1
2
3
4
(Top View)
8
SW
7
BST
6
FB
5
COMP
Figure 3. Pin Connections
PIN FUNCTION DESCRIPTIONS
Pin No.
Symbol
Description
1 VIN Input voltage from battery. Place an input filter capacitor in close proximity to this pin.
2
DRV
Output voltage to provide a regulated voltage to the Power Switch gate driver.
3
GND
Battery return, and output voltage ground reference.
4 EN This TTL compatible Enable input allows the direct connection of Battery as the enable signal. Grounding
this input stops switching and reduces quiescent current draw to a minimum.
5 COMP Error Amplifier output, for tailoring transient response with external compensation components.
6 FB Feedback input pin to program output voltage, and detect pre−charged or shorted output conditions.
7 BST Bootstrap input provides drive voltage higher than VIN to the N−channel Power Switch for optimum
switch RDS(on) and highest efficiency.
8 SW Switching node of the Regulator. Connect the output inductor and cathode of the freewheeling diode to
this pin.
Exposed
Pad
Connect to Pin 3 (electrical ground) and to a low thermal resistance path to the ambient temperature
environment.
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4
4페이지 NCV890230
TYPICAL CHARACTERISTICS CURVES
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VIN = 13.2 V
7
6
5
4
3
2
1
0
−50 −25 0
25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 4. Shutdown Quiescent Current vs.
Junction Temperature
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4.0
3.9
−50 −25 0 25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 6. UVLO Start Threshold vs. Junction
Temperature
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
−50 −25 0
25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 8. Soft−Start Duration vs. Junction
Temperature
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
−50 −25 0
25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 5. Enabled Quiescent Current vs.
Junction Temperature
4.6
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
−50 −25 0 25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 7. UVLO Stop Threshold vs. Junction
Temperature
0.85
0.84
0.83
0.82
0.81
0.80
0.79
0.78
0.77
0.76
0.75
−50 −25 0
25 50 75 100 125 150
TJ. JUNCTION TEMPERATURE (°C)
Figure 9. FB Regulation Voltage vs. Junction
Temperature
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부품번호 | 상세설명 및 기능 | 제조사 |
NCV890230 | 2MHz Automotive Buck Switching Regulator | ON Semiconductor |
NCV890231 | 2MHz Automotive Buck Switching Regulator | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |