Datasheet ISL97801 (Intersil)
| Fabricante | Intersil |
| Descripción | High Power LED Driver |
| Páginas / Página | 20 / 1 — NOT RECOMMENDED FOR NEW DESIGNS. RECOMMENDED REPLACEMENT PART. ISL97634. … |
| Formato / tamaño de archivo | PDF / 1.3 Mb |
| Idioma del documento | Inglés |
NOT RECOMMENDED FOR NEW DESIGNS. RECOMMENDED REPLACEMENT PART. ISL97634. Features. Applications. Ordering Information. PART
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Versión de texto del documento
DATASHEET
NOT RECOMMENDED FOR NEW DESIGNS
ISL97801
RECOMMENDED REPLACEMENT PART
FN6428
ISL97634
High Power LED Driver Rev 1.00 April 2, 2007 The ISL97801 is a high-power LED backlight driver with an
Features
integrated 36V FET designed to drive up to 8 high-power LEDs in series. The PWM converter runs from an internally • Drives 3-8 high-power LEDs in series, up to 32V generated 1MHz clock. With efficiencies over 90% the • 2.7V to 16V input voltage range regulator provides tight control of LED current and may be • Boost or Buck configurable switch configured in either boost or buck topologies, allowing from 3 to 8 series diodes to be driven from wide input voltages. • 3A integrated FET LED light level may be controlled either by: • Automotive load dump protection 1. LED DC bias current set via the LEVEL pin, or • Light output temperature compensation 2. External low frequency PWM control via the • LED over-temperature protection ENABLE/PWM pin. • LED disconnect In both control modes optional over temperature thermal protection of the LED reduces the LED DC bias current • PWM/analog light level control above an adjustable set temperature, protecting the LED • Small, 20 Ld 4mm x 4mm QFN package from thermal damage. An optional fault monitor drives an • Pb-free plus anneal available (RoHS compliant) external FET between the input supply and inductor, providing short circuit current protection for the LED and
Applications
inductor as well as load dump protection for automotive applications. For low cost applications the pass transistor • Display backlighting may be omitted and the fault pin bypassed. - Automotive - LCD monitor The ISL97801 is packaged in a 20 Ld 4mm x 4mm QFN package and is specified for operation over the -40°C to - Notebook displays +105°C temperature range. • LED accent lighting • Automotive lighting
Ordering Information PART TAPE & Pinout NUMBER PART REEL/ PACKAGE PKG. ISL97801 (Note) MARKING QTY (Pb-free) DWG. # (20 LD 4X4 QFN)
TOP VIEW ISL97801ARZ 978 01ARZ - 20 Ld 4x4 QFN L20.4x4C ISL97801ARZ-TK 978 01ARZ 13”/ 20 Ld 4x4 QFN L20.4x4C 1,000
N AULT VI F GND NC VBAT
ISL97801ARZ-T 978 01ARZ 13”/ 20 Ld 4x4 QFN L20.4x4C
20 19 18 17 16
6,000
VDC 1 15 ENL
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100%
VHI 2 14 MODE
matte tin plate termination finish, which are RoHS compliant and
OVP 3 THERMAL 13 EN/PWM
compatible with both SnPb and Pb-free soldering operations. Intersil
PAD
Pb-free products are MSL classified at Pb-free peak reflow
SWD1 4 12 SWS1
temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
SWD2 5 11 SWS2 6 7 8 9 10 X FB A LEVEL TEMP TM K/BOOSTN UC B
FN6428 Rev 1.00 Page 1 of 20 April 2, 2007
NOT RECOMMENDED FOR NEW DESIGNS
ISL97801
RECOMMENDED REPLACEMENT PART
FN6428
ISL97634
High Power LED Driver Rev 1.00 April 2, 2007 The ISL97801 is a high-power LED backlight driver with an
Features
integrated 36V FET designed to drive up to 8 high-power LEDs in series. The PWM converter runs from an internally • Drives 3-8 high-power LEDs in series, up to 32V generated 1MHz clock. With efficiencies over 90% the • 2.7V to 16V input voltage range regulator provides tight control of LED current and may be • Boost or Buck configurable switch configured in either boost or buck topologies, allowing from 3 to 8 series diodes to be driven from wide input voltages. • 3A integrated FET LED light level may be controlled either by: • Automotive load dump protection 1. LED DC bias current set via the LEVEL pin, or • Light output temperature compensation 2. External low frequency PWM control via the • LED over-temperature protection ENABLE/PWM pin. • LED disconnect In both control modes optional over temperature thermal protection of the LED reduces the LED DC bias current • PWM/analog light level control above an adjustable set temperature, protecting the LED • Small, 20 Ld 4mm x 4mm QFN package from thermal damage. An optional fault monitor drives an • Pb-free plus anneal available (RoHS compliant) external FET between the input supply and inductor, providing short circuit current protection for the LED and
Applications
inductor as well as load dump protection for automotive applications. For low cost applications the pass transistor • Display backlighting may be omitted and the fault pin bypassed. - Automotive - LCD monitor The ISL97801 is packaged in a 20 Ld 4mm x 4mm QFN package and is specified for operation over the -40°C to - Notebook displays +105°C temperature range. • LED accent lighting • Automotive lighting
Ordering Information PART TAPE & Pinout NUMBER PART REEL/ PACKAGE PKG. ISL97801 (Note) MARKING QTY (Pb-free) DWG. # (20 LD 4X4 QFN)
TOP VIEW ISL97801ARZ 978 01ARZ - 20 Ld 4x4 QFN L20.4x4C ISL97801ARZ-TK 978 01ARZ 13”/ 20 Ld 4x4 QFN L20.4x4C 1,000
N AULT VI F GND NC VBAT
ISL97801ARZ-T 978 01ARZ 13”/ 20 Ld 4x4 QFN L20.4x4C
20 19 18 17 16
6,000
VDC 1 15 ENL
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100%
VHI 2 14 MODE
matte tin plate termination finish, which are RoHS compliant and
OVP 3 THERMAL 13 EN/PWM
compatible with both SnPb and Pb-free soldering operations. Intersil
PAD
Pb-free products are MSL classified at Pb-free peak reflow
SWD1 4 12 SWS1
temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
SWD2 5 11 SWS2 6 7 8 9 10 X FB A LEVEL TEMP TM K/BOOSTN UC B
FN6428 Rev 1.00 Page 1 of 20 April 2, 2007