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MC34845DEP

厂商:
Freescale
类别:
LED驱动器
包装:
-
封装:
QFN 24 EP 4SQ*0.65 P0.5
无铅情况/ROHS:
无铅
描述:
6-Ch LED Backlit Driver

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  • 参数
  • 描述
  • 文档
参数 数值
2nd Level Interconnect e4
Ambient Operating Temperature (Min-Max) (°C) -40 to 85
Application/Qualification Tier COMMERCIAL
Diagnostics None
Export Control Classification Number (US) EAR99
Floor Life 168 HOURS
Halogen Free Yes
Harmonized Tariff (US) Disclaimer 8542.39.0000
Interface and Input Control Parallel
Leadtime (weeks) 18
Life Cycle Description (code) PRODUCT STABLE GROWTH/MATURITY
Material Composition Declaration (MCD) Download MCD Report Download MCD Report
Material Type Tested Packaged Device
Maximum Time at Peak Temperature (s) 40
Micron Size (μm) .27
Minimum Package Quantity (MPQ) 490
Moisture Sensitivity Level (MSL) 3
MPQ Container TRAY
Number of Reflow Cycles 3
Number of Regulators-Boost Switching 1
Pin/Lead/Ball Count 24
POQ Container BOX
REACH SVHC Freescale REACH Statement
Regulator - Output Current (A) 2.35
RoHS Certificate of Analysis (CoA) Contact Us
Sample Exception Availability Y
Supply Voltage (Min-Max) (V) 5 to 21
Tape & Reel No
Budgetary Price($US) 10000 @ $1.15 each
Preferred Order Quantity (POQ) 2450
UL94 (plastics flammability test) V0: burning stops within 10 seconds on a vertical specimen; no drips allowed
Package Description and Mechanical Drawing QFN 24 EP 4SQ*0.65 P0.5
Part Number MC34845DEP
Status Active
Device Function LED Drivers
Protection Undervoltage Lock Out / Over Voltage Protect / Over Temperature / Output Short to Ground / Output Current
Package Length (nominal) (mm) 4.000
Package Width (nominal) (mm) 4.000
Peak Package Body Temperature (PPT)(°C) 260
Additional Features-Analog PWM Capable
Regulator - Output Voltage 60
Device Weight (g) .02990
Package Thickness (nominal) (mm) .650
Description 6-Ch LED Backlit Driver

The 34845 series represents a high efficiency, LED driver for use in backlighting LCD displays from 10” to 17”+. Operating from supplies of 5.0 V to 21 V, the 34845 series is capable of driving up to 16 LEDs in series in each of 6 strings. The LED current tolerance in the 6 strings is within ±2% and is set using a resistor to GND.

PWM dimming is performed by applying a PWM input signal to the PWM pin which modulates the LED channels directly.

The integrated boost converter uses dynamic headroom control to automatically set the output voltage. There are three device versions for boost frequency, the 34845 and 34845C are 600 kHz,  the 34845A is 1.2 MHz and the 34845B and 34845D are 300kHz. External compensation allows the use of different inductor/capacitor combinations.

The 34845 includes fault protection modes for LED short and open, over temperature, over current and over voltage errors. The OVP level can be set by using an external resistor divider.


Features

  • Input voltage of 5.0 to 21 V
  • Boost output voltage up to 60 V
  • 2.0 A integrated boost FET
  • Fixed boost frequency to 300kHz, 600 kHz or 1.2 MHz
  • OTP, OCP, UVLO fault detection, LED short/open protection
  • Programmable LED current between 3.0 mA and 30 mA
  • 24-Ld 4x4x0.65 mm WQFN Package
  • This product is included in Freescale’s , with assured supply for a minimum of 10 years after launch
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框图

Data Sheets
文档名称 文档类型 软件 描述
MC34845DEPPDF下载 点击下载 点击下载 MC34845
Users Guides
文档名称 文档类型 软件 描述
MC34845DEPPDF下载 点击下载 点击下载 KT34845UG
Application Notes
文档名称 文档类型 软件 描述
MC34845DEPPDF下载 点击下载 点击下载 AN3957
MC34845DEPPDF下载 点击下载 点击下载 AN1902
Fact Sheets
文档名称 文档类型 软件 描述
MC34845DEPPDF下载 点击下载 点击下载 MC34845FS