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부품번호 | NCV8873 기능 |
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기능 | Automotive Grade Non-Synchronous Boost Controller | ||
제조업체 | ON Semiconductor | ||
로고 | |||
전체 11 페이지수
NCV8873
Automotive Grade
Non-Synchronous Boost
Controller
The NCV8873 is an adjustable output non−synchronous boost
controller which drives an external N−channel MOSFET. The device
uses peak current mode control with internal slope compensation. The
IC incorporates an internal regulator that supplies charge to the gate
driver.
Protection features include internally−set soft−start, undervoltage
lockout, cycle−by−cycle current limiting and thermal shutdown.
Additional features include low quiescent current sleep mode and
externally−synchronizable switching frequency.
Features
• Peak Current Mode Control with Internal Slope Compensation
• 0.2 V $3% Reference Voltage for Constant Current Loads
• Fixed Frequency Operation
• Wide Input Voltage Range of 3.2 V to 40 V, 45 V Load Dump
• Input Undervoltage Lockout (UVLO)
• Internal Soft−Start
• Low Quiescent Current in Sleep Mode
• Cycle−by−Cycle Current Limit Protection
• Hiccup−Mode Overcurrent Protection (OCP)
• Thermal Shutdown (TSD)
• This is a Pb−Free Device
www.onsemi.com
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAM
8
8873xx
ALYW
G
1
8873xx = Specific Device Code
xx = 00 or 01
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
PIN CONNECTIONS
EN/SYNC 1
ISNS 2
GND 3
GDRV 4
8 VFB
7 VC
6 VIN
5 VDRV
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCV887300D1R2G SOIC−8 2500 / Tape &
(Pb−Free)
Reel
NCV887301D1R2G SOIC−8 2500 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
August, 2016 − Rev. 6
1
Publication Order Number:
NCV8873/D
NCV8873
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 150°C, 3.2 V < VIN < 40 V, unless otherwise specified) Min/Max values are
guaranteed by test, design or statistical correlation.
Characteristic
Symbol
Conditions
Min Typ Max Unit
GENERAL
Quiescent Current, Sleep Mode
Quiescent Current, Sleep Mode
Quiescent Current, No switching
Quiescent Current, Switching,
normal operation
Iq,sleep
Iq,sleep
Iq,off
Iq,on
VIN = 13.2 V, EN = 0, TJ = 25°C
VIN = 13.2 V, EN = 0, −40°C < TJ < 125°C
Into VIN pin, EN = 1, No switching
Into VIN pin, EN = 1, Switching
− 2.0 −
mA
− 2.0 6.0 mA
− 1.5 2.5 mA
− 4.0 6.0 mA
OSCILLATOR
Minimum pulse width
Maximum duty cycle
ton,min
Dmax
YY = 00
YY = 01
90 115 140
84 86.5 89
85 87.5 90
ns
%
Switching frequency
fs YY = 00
YY = 01
900 1000 1100
360 400 440
kHz
Soft−start time
tss From start of switching with VFB = 0 until
ms
reference voltage = VREF
YY = 00
1.3 1.6 1.9
YY = 01
3.3 4.0 4.7
Soft−start delay
Slope compensating ramp
tss,dly
Sa
From EN → 1 until start of switching with
VFB = 0 with floating VC pin
YY = 00
YY = 01
ms
− 240 280
114 130 146 mV/ms
25 30 35
ENABLE/SYNCHRONIZATION
EN/SYNC pull−down current
EN/SYNC input high voltage
EN/SYNC input low voltage
EN/SYNC time−out ratio
IEN/SYNC
VEN/SYNC = 5 V
− 5.0 10
mA
Vs,ih
2.0 − 5.0
V
Vs,il 0 − 800 mV
%ten
From SYNC falling edge, to oscillator con-
trol (EN high) or shutdown (EN low), Per-
cent of typical switching frequency
−
− 350
%
SYNC minimum frequency ratio
SYNC maximum frequency
Synchronization delay
%fsync,min
fsync,max
ts,dly
Percent of fs
From SYNC falling edge to GDRV falling
edge under open loop conditions.
− − 80 %
1.1 −
− MHz
− 50 100 ns
Synchronization duty cycle
CURRENT SENSE AMPLIFIER
Dsync
25 − 75 %
Low−frequency gain
Bandwidth
ISNS input bias current
Current limit threshold voltage
Acsa
BWcsa
Isns,bias
Vcl
Input−to−output gain at dc, ISNS v 1 V
Gain of Acsa − 3 dB
Out of ISNS pin
Voltage on ISNS pin
YY = 00
YY = 01
0.9 1.0 1.1
V/V
2.5 −
− MHz
− 30 50 mA
360 400 440
180 200 220
mV
Current limit,
Response time
Overcurrent protection,
Threshold voltage
tcl
%Vocp
CL tripped until GDRV falling edge,
VISNS = Vcl(typ) + 60 mV
Percent of Vcl
− 80 125
125 150 175
ns
%
Overcurrent protection,
Response Time
tocp From overcurrent event, Until switching
stops, VISNS = VOCP + 40 mV
− 80 125 ns
www.onsemi.com
4
4페이지 NCV8873
TYPICAL PERFORMANCE CHARACTERISTICS
7
6 TJ = 25°C
5
4
3
2
1
0
0 1 234 56
Venable, VOLTAGE (V)
Figure 8. Enable Pulldown Current vs. Voltage
8.0
7.5
7.0
6.5
6.0
5.5
5.0
−40
10 60 110
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Enable Pulldown Current vs.
Temperature
160
www.onsemi.com
7
7페이지 | |||
구 성 | 총 11 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
NCV8870 | Automotive Grade Non-Synchronous Boost Controller | ON Semiconductor |
NCV8871 | Automotive Grade Non-Synchronous Boost Controller | ON Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |