|
|
|
부품번호 | NCV891130 기능 |
|
|
기능 | DualMode Step-Down Regulator | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 18 페이지수
NCV891130
1.2 A, 2 MHz Low-IQ Dual-
Mode Step-Down Regulator
for Automotive
The NCV891130 is a Dual Mode regulator intended for Automotive,
battery−connected applications that must operate with up to a 45 V
input supply. Depending on the output load, it operates either as a PWM
Buck Converter or as a Low Drop−Out Linear Regulator, and is suitable
for systems with low noise and Low Quiescent Current requirements
often encountered in automotive driver information systems. A reset
pin (with fixed delay) simplifies interfacing with a microcontroller.
The NCV891130 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
inductor values and an all−ceramic output filter capacitor – forming a
space−efficient switching regulator solution.
Features
• 30 mA Iq in Light Load Condition
• 1.2 A Maximum Output Current in PWM Mode
• Internal N−channel Power Switch
• VIN Operating Range 3.7 V to 36 V
• Withstands Load Dump to 45 V
• Logic Level Enable Pin can be Tied to Battery
• Fixed Output Voltage of 5.0 V, 4.0 V or 3.3 V
• 2 MHz Free−running Switching Frequency
• ±2 % Output Voltage Accuracy
• NCV Prefix for Automotive Requiring Site and Control Changes
• These Devices are Pb−Free and are RoHS Compliant
Typical Applications
• Audio
• Infotainment
• Instrumentation
• Safety−Vision Systems
VIN
CIN
RESET
CDRV
NCV891130
VIN
DRV
SW
CBST
BST
RSTB VOUT
GND
EN
DBST
L1
DFW
EN
VOUT
COUT
Figure 1. Typical Application
www.onsemi.com
8
1
SOIC−8
EXPOSED PAD
CASE 751AC
MARKING DIAGRAM
8
891130XX
ALYW
G
1
With XX = 33 for 3.3 V Output
= 40 for 4.0 V Output
= 50 for 5.0 V Output
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Device
PIN CONNECTIONS
VIN 1
8 SW
DRV 2
7 BST
RSTB 3
6 VOUT
GND 4
(Top View)
5 EN
ORDERING INFORMATION
See detailed ordering and shipping information on page 17 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 1
1
Publication Order Number:
NCV891130/D
NCV891130
Table 3. ELECTRICAL CHARACTERISTICS
VIN = 4.5 to 28 V, VEN = 5 V, VBST = VSW + 3 V, CDRV = 0.1 mF, for typical values TJ = 25°C, Min/Max values are valid for the temperature
range −40°C v TJ v 150°C unless noted otherwise, and are guaranteed by test, design or statistical correlation (Notes 4, 5)
Parameter
Test Conditions
Symbol Min Typ Max Unit
OSCILLATOR
Frequency
VIN FREQUENCY FOLDBACK MONITOR
4.5 < VIN < 18 V
20 V <VIN < 28V
FSW 1.8 2.0 2.2 MHz
FSW(HV) 0.9 1.0 1.1
Frequency Foldback Threshold
VIN rising
VIN falling
Frequency Foldback Hysteresis
MODE TRANSITION
VFLDUP
VFLDDN
18.4
18
20
19.8
VFLDHY
0.2
0.3
0.4
V
V
Normal to Low−Iq mode Current Threshold
Mode Transition Duration
Switcher to Linear
Linear to Switcher
8 V < VIN < 28 V
Minimum time in Normal Mode before
starting to monitor output current
INtoL
3
40 mA
tSWtoLIN
tLINtoSW
300
12
ms
tSWblank
500
ms
Linear to switcher transition
at high Vin
at low Vin
PEAK CURRENT LIMIT
VOUT = 3.3 V
VLINtoSW(HV)
VLINtoSW(LV)
19
3.6
V
28
4.5
Current Limit Threshold
POWER SWITCH
ILIM 2.1 2.35 2.6
A
ON Resistance
Leakage current VIN to SW
Minimum ON Time
Minimum OFF Time
SLOPE COMPENSATION
VBST = VSW + 3.0 V
RDSON
180 360 mW
VSW = 0, −40°C v TJ v 85°C
ILKSW
10 mA
Measured at SW pin
tONMIN
45
70 ns
Measured at SW pin
tOFFMIN
ns
At FSW = 2 MHz (normal)
30
At FSW = 500 kHz (max duty cycle)
30 50
70
Ramp Slope
(With respect to switch current)
LOW POWER LINEAR REGULATOR
4.5 < VIN < 18 V
20 V <VIN < 28V
Sramp
1.45
Sramp(HV) 0.65
2.0
1.0
2.8 A/ms
1.3
Line Regulation
Load Regulation
Power Supply Rejection
Current Limit
Output clamp current
SHORT CIRCUIT DETECTOR
IOUT = 5 mA, 6 V < VIN < 18 V
VREG(line)
5 25 mV
VIN = 13.2 V, 0.1 mA < IOUT < 50 mA
VREG(load)
5 35 mV
VOUT(ripple) = 0.5 Vp−p, F = 100 Hz
PSRR
65
dB
ILIN(lim)
50
80 mA
VOUT = VOUTreg(typ) + 10%
ICL(OUT) 0.5
1.0
1.5
mA
Switching frequency in short−circuit condi-
tion Analog Foldback
Analog foldback – high VIN
Hiccup Mode
RESET
VOUT = 0 V, 4.5 V < VIN < 18 V
VOUT = 0 V, 20 V <VIN < 28 V
kHz
FSWAF
450
550
650
FSWAFHV 225 275 325
FSWHIC
24
32
40
Leakage current into RSTB pin
IRSTBlk
1 uA
4. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
5. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at TJ = TA = 25°C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
www.onsemi.com
4
4페이지 NCV891130
TYPICAL CHARACTERISTICS
4.05
4.04
4.03
4.02
4.01 Switcher Mode
4.00
3.99
3.98 Low−Iq Mode
3.97
3.96
3.95
3.94
−50
0
50 100 150
TEMPERATURE (°C)
Figure 9. 4.0 V Output Voltage vs. Junction
Temperature
5.05
5.04
5.03
5.02
5.01
Switcher Mode
5.00
4.99
4.98 Low−Iq Mode
4.97
4.96
4.95
4.94
−50
0
50 100 150
TEMPERATURE (°C)
Figure 10. 5.0 V Output Voltage vs. Junction
Temperature
2.2 57
2.1
2.0
1.9
1.8
−50
0
50 100 150
TEMPERATURE (°C)
Figure 11. Switching Frequency vs. Junction
Temperature
2.5
56
55
54
53
52
−50
0
50 100 150
TEMPERATURE (°C)
Figure 12. Minimum On Time vs. Junction
Temperature
4.7
2.4
2.3
2.2
2.1
−50
0
50 100 150
TEMPERATURE (°C)
Figure 13. Peak Current Limit vs. Junction
Temperature
4.6
4.5
4.4
4.3
4.2
−50
0
50 100 150
TEMPERATURE (°C)
Figure 14. Peak Current Limit vs. Junction
Temperature
www.onsemi.com
7
7페이지 | |||
구 성 | 총 18 페이지수 | ||
다운로드 | [ NCV891130.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
NCV891130 | DualMode Step-Down Regulator | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |