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ISL78100 の電気的特性と機能

ISL78100のメーカーはIntersil Corporationです、この部品の機能は「High Power LED Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL78100
部品説明 High Power LED Driver
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL78100 Datasheet, ISL78100 PDF,ピン配置, 機能
®
Data Sheet
December 17, 2007
ISL78100
FN6626.0
High Power LED Driver
The ISL78100 is a high-power LED backlight driver with an
www.idnatteagsrhaeteetd4u3.c6oVmFET designed to drive up to 8 high-power
LEDs in series. The PWM converter runs from an internally
generated 1MHz clock. With efficiencies over 90%, the
regulator provides tight control of LED current and may be
configured in either boost or buck topologies, allowing from
3 to 8 series diodes to be driven from wide input voltages.
LED light level may be controlled either by:
1. LED DC bias current set via the LEVEL pin, or
2. External low frequency PWM control via the
ENABLE/PWM pin.
In both control modes, optional over-temperature thermal
protection of the LED reduces the LED DC bias current
above an adjustable set temperature, protecting the LED
from thermal damage. An optional fault monitor drives an
external FET between the input supply and inductor,
providing short circuit current protection for the LED and
inductor as well as load dump protection for automotive
applications. For low cost applications the pass transistor
may be omitted and the fault pin bypassed.
The ISL78100 is packaged in a 20 Ld 4mmx4mm QFN
package and is specified for operation over the -40°C to
+105°C temperature range.
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL78100ARZ
781 00ARZ 20 Ld 4x4 QFN L20.4x4C
ISL78100ARZ-TK* 781 00ARZ 20 Ld 4x4 QFN L20.4x4C
Tape and Reel
ISL78100ARZ-T* 781 00ARZ 20 Ld 4x4 QFN L20.4x4C
Tape and Reel
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Drives 3 to 8 high-power LEDs in series, up to 32V
• 2.7V to 16V input voltage range
• Boost or Buck configurable switch
• 3A integrated FET
• Automotive load dump protection
• Light output temperature compensation
• LED over-temperature protection
• LED disconnect
• PWM/analog light level control
• Small, 20 Ld 4mmx4mm QFN package
• TS-16949 and AEC-Q100 Compliant
• Pb-free (RoHS compliant)
Applications
• Automotive display backlighting
• Automotive LED lighting
Pinout
ISL78100
(20 LD 4X4 QFN)
TOP VIEW
VDC 1
VHI 2
OVP 3
SWD1 4
SWD2 5
THERMAL
PAD
15 ENL
14 MODE
13 EN/PWM
12 SWS1
11 SWS2
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL78100 pdf, ピン配列
ISL78100
Electrical Specifications VBAT = VIN = 12V, VDC = 5V, TA = -40°C to +105°C unless otherwise specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX
UNIT
FBOV FAULT Feedback Overvoltage Fault
fSW Switching Frequency
fDIMMING Maximum Recommended PWM
Dimming Frequency
www.datasheet4u.com
tSWITCH Load Switch Transition Time
RLSDRIVERL Load Switch Driver Impedance Low
RLSDRIVERH Load Switch Driver Impedance High
tFAULT
Fault Timer Period
tDELAY
Start-up Delay
VFAULTPUMP Fault Pin Charge Pump
VBOOST Boost Mode Threshold
VBUCK
Buck Mode Threshold
VMODEL Mode Low Threshold
VMODEH Mode High Threshold
enFAULT
Input Level Applied to TMAX Pin to
Enable Fault Protection
VLEVEL = 1V, EN/PWM = 3V
Mode = 1, modulation signal applied to EN/PWM
220
800
250
1000
10
300
1150
mV
kHz
kHz
CGATE = 2nF
EN/PWM = 0
EN/PWM = 3V
Timed LX switching delay
VBAT = VIN = 3V
BUCK/BOOSTN = GND
BUCK/BOOSTN = VDC
MODE = GND
MODE = VDC
100 ns
30 50 Ω
30 52 Ω
40 50 60 ms
0.85 1 1.24 ms
6V
0.94VDC
2/3VDC
0.4VDC
1/3VDC
0.9VDC
V
V
V
V
V
disFAULT
Input Level Applied to TMAX Pin to
Disable Fault Protection
0.96VDC
V
enTEMP
Input Level Applied to TEMP Pin to
Enable Temperature Compensation
0.5 V
disTEMP
Input Level Applied to TEMP Pin to
Disable Temperature Compensation
0.08 V
TCOMPP
VFB Positive Temperature
Compensation; VFB/VFBnom
VTEMP/VDC = 0.80
1.26
TCOMPN
VFB Negative Temperature
Compensation; VFB/VFBnom
VTEMP/VDC = 0.20
0.74
TTRIP
Internal Temperature Protection
Threshold
135 °C
THYS
Internal Temperature Protection
Hysteresis
25 °C
VEN/PWML
VEN/PWMH
VDCUVLO
RSchottky
EN/PWM Pin Input Low Threshold
EN/PWM Pin Input High Threshold
VDC Undervoltage Lockout
Internal Schottky Diode for Buck
1.2 V
2.5 V
2.6 V
15 23 Ω
.
MODE
1
Don’t Care
0
TABLE 1. LIGHT OUTPUT CONTROL, VDC = 5.0V
TEMP
OPERATING MODE
(VDC - 0.25) > V > 0.25V Standard Mode light level to PWM modulation of EN/PWM input; LED bias current determined by
LEVEL voltage, nominal 1V
V < 0.25V
Disable temperature compensation
V < (VDC - 0.25)
Fixed Bias Mode VFB level internally set to 0.4V, independent of VLEVEL
3 FN6626.0
December 17, 2007


3Pages


ISL78100 電子部品, 半導体
ISL78100
Typical Performance Curves (Continued)
41
5 LEDs
40 ILEDpeak = 380mA
DUTY CYCLE = 10%
39 10% @ 100Hz
38
www.datasheet4u.com
37
36
10% @ 10kHz
35
34
6 8 10 12 14 16 18
VIN (V)
FIGURE 13. 5 LEDs LINE REGULATION OF PWM DUTY
CYCLE OF 10%
42
41
3 LEDs
ILEDpeak = 380mA
40 DUTY CYCLE = 10%
PWM @ 100Hz
39
38
37
36
35
34 PWM @ 10kHz
33
32
4 5 67
8 9 10
VIN (V)
FIGURE 14. 3 LEDs LINE REGULATION OF PWM DUTY
CYCLE OF 10%
400
RSET = 0.5Ω
350 DUTY CYCLE = 100%
300
250 5 LED
8 LED
200
150
100
50
3 LED
0
0 0.2 0.4 0.6 0.8
VLEVEL (V)
FIGURE 15. LED CURRENT vs VLEVEL BIAS
1.0
0.1000
EN/PWM = 0
VLEVEL = 1V
TA = +25°C
0.0100
0.0010
0.0001
6
8 10 12 14 16 18
VIN (V)
FIGURE 16. QUIESCENT CURRENT (NON-SWITCHING)
8 LEDs
ILED = 350mA
VIN
LX
IL
FB
FIGURE 17. START-UP WAVEFORMS
8 LEDs
ILED = 350mA
VIN
LX
IL
FB
FIGURE 18. START-UP WAVEFORMS ZOOM-IN
6 FN6626.0
December 17, 2007

6 Page



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部品番号部品説明メーカ
ISL78100

High Power LED Driver

Intersil Corporation
Intersil Corporation


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