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NCV7691のメーカーはON Semiconductorです、この部品の機能は「Current Controller」です。 |
部品番号 | NCV7691 |
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部品説明 | Current Controller | ||
メーカ | ON Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとNCV7691ダウンロード(pdfファイル)リンクがあります。 Total 18 pages
NCV7691
Current Controller for
Automotive LED Lamps
The NCV7691 is a device which uses an external NPN bipolar
device combined with feedback resistor(s) to regulate a current for use
in driving LEDs. The target application for this device is automotive
rear combination lamps. A single driver gives the user flexibility to
add single channels to multichannel systems. A dedicated dimming
feature is included via the PWM input pin. The individual driver is
turned off when an open load or short circuit is detected.
LED brightness levels are easily programmed using an external
resistor in series with the bipolar transistor. The use of the resistor
gives the user the flexibility to use the device over a wide range of
currents.
Multiple strings of LEDs can be operated with a single NCV7691
device.
Set back power limit reduces the drive current during overvoltage
conditions.
The device is available in a SOIC−8 package.
Features
• Constant Current Output for LED String Drive
• External Bipolar Device for Wide Current Range Flexibility
♦ With BCP56 Transistor, Can Drive Multiple Strings Concurrently
(ref. Datasheet Info)
• External Programming Current Resistor
• Pulse Width Modulation (PWM) Control
• Negative Temperature Coefficient Current Control Option
• Open LED String Diagnostic
• Short−Circuit LED String Diagnostic
• Multiple LED String Control
• Overvoltage Set Back Power Limitation
• SOIC−8 Package
• AEC−Q100 Qualified and PPAP Capable
• These are Pb−Free Devices
Applications
• Rear Combination Lamps (RCL)
• Daytime Running Lights (DRL)
• Fog Lights
• Center High Mounted Stop Lamps (CHMSL) Arrays
• Turn Signal and Other Externally Modulated Applications
• General Automotive Linear Current LED Driver
www.onsemi.com
8
1
SOIC 8
CASE 751AZ
MARKING DIAGRAM
8
NCV7691
ALYW
G
1
IC (Pb−Free)
NCV7691 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
PINOUT DIAGRAM
VS SC
PWM BASE
FLTS FB
NTC GND
ORDERING INFORMATION
Device
Package
Shipping†
NCV7691D10R2G SOIC−8
(Pb−Free)
3000 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
May, 2015 − Rev. 3
1
Publication Order Number:
NCV7691/D
1 Page NCV7691
Thermal
Monitoring
Supply
Monitoring
VS
Short−circuit
Detection
−
+
SC
2V
PWM
120K
FLTS
NTC
0.4V to 2.1V
Thermal
Shutdown
−
+
Open Load
Detection
NTC
10
Slew
Rate
Control
1k
Current
Limitation
Protection
BASE
−
+
(Vref/2 or NTC/20)
76 mV
Vref
Reference
Selection
152mV
FB
GND
PIN FUNCTION DESCRIPTION
8 Lead SON Package
Pin #
Label
1 VS
2 PWM
3 FLTS
4 NTC
5 GND
6 FB
7 BASE
8 SC
Figure 3. Block Diagram
Automotive Battery input voltage
Description
Logic input for output on/off control. Pull high for output on.
A capacitor to ground sets the time for open circuit, short circuit, and overtemperature
detection.
Optional input for Negative Temperature Coefficient performance.
Ground this pin if Negative Temperature Coefficient is not used.
Ground
Feedback pin for current regulation
Base Drive for external transistor (14 mA [min])
LED Short Circuit Detection Input. Ground pin if not used.
www.onsemi.com
3
3Pages NCV7691
ELECTRICAL CHARACTERISTICS
(4.5 V < VS < 18 V, CFLTS = 0.1 mF, R1 = 1 W, Transistor NPN = BCP56, −40°C ≤ TJ ≤ 150°C, unless otherwise specified) (Note 3)
Characteristic
Conditions
Min Typ Max Unit
Short Circuit
Short Circuit Detection Threshold
VS − 1.7 VS − 2 VS − 2.3
V
Short Circuit Output Current
Current out of the SC pin
− 8 16 mA
PWM
Input High Threshold
Input Low Threshold
− − 2.2 V
0.7 − − V
Hysteresis
Input Pull−down Resistor
− 0.35 −
V
30 120 190 kW
Temperature Compensation
NTC Attenuation
0.4 V < NTC < 2.1 V
− 1/10 −
Regulation Offset
(referenced to FB)
NTC = 1.6 V Typ, 0.4 V < NTC < 2.1 V, VS = 14 V
−2
−
+2
%
−7 − +7 mV
NTC Input Pull−down Resistor
NTC = 150 mV (low impedance)
NTC = 400 mV (high impedance) (Note 5)
15 22 31 kW
1 MW
NTC Detection Level
170 220 300 mV
AC Characteristics
LED Current rise time
LED Current fall time
Propagation Delay
PWM rising to IoutB/T
Propagation Delay
PWM falling to IoutB/T
PWM Propagation Delay Delta
Delay Time VS to BASE
10% / 90% criterion, PWM rising (Note 6)
90% / 10% criterion, PWM falling (Note 6)
50% criterion (Note 6)
50% criterion (Note 6)
|(Falling time) − (Rising time)|
VS rising through UVLO to BASE going high
through 0.5 V
CBASE = 50 pF, RBASE = 680 W
PWM = VS, SC = floating, FB = GND, NTC = GND
1
1
−
−
−
−
2.5 7.5 msec
2.5 7.5 msec
5 15 msec
5 15 msec
4 msec
4 9 msec
Open Load Blanking Delay
Short Circuit Blanking Time
Power−Up Blanking Time
FLTS capacitor charge time not included
25 42 70 msec
10 23 36 msec
10 23 36 msec
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. Designed to meet these characteristics over the stated voltage and temperature recommended operating ranges, though may not be 100%
parametrically tested in production.
4. Guaranteed by design.
5. NTC = 400 mV is > NTC detection level and is a higher impedance than when operating within the detection level.
6. Evaluated at VS = 14V, (LED string current)max = 15 mA to 37 mA.
7. Device tested at 18 V. Upper limit of 6 V applies across the VS input supply range, but the maximum rating for FLTS (−0.3V to VS to −0.3V)
must be considered for all system designs especially at the minimum extreme of VS = 4.5 V.
www.onsemi.com
6
6 Page | |||
ページ | 合計 : 18 ページ | ||
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PDF ダウンロード | [ NCV7691 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
NCV7691 | Current Controller | ON Semiconductor |