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MC34845CEP

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
Material Type Tested Packaged Device
Moisture Sensitivity Level (MSL) 3
Number of Reflow Cycles 3
Description 6-Ch LED Backlit Driver
Export Control Classification Number (US) EAR99
RoHS Certificate of Analysis (CoA) Contact Us
Micron Size (μm) .27
Preferred Order Quantity (POQ) 2450
Tape & Reel No
UL94 (plastics flammability test) V0: burning stops within 10 seconds on a vertical specimen; no drips allowed
POQ Container BOX
Protection Undervoltage Lock Out / Over Voltage Protect / Over Temperature / Output Short to Ground / Output Current
Ambient Operating Temperature (Min-Max) (°C) -40 to 85
Life Cycle Description (code) PRODUCT MATURITY/SATURATION
Minimum Package Quantity (MPQ) 490
REACH SVHC Freescale REACH Statement
Supply Voltage (Min-Max) (V) 5 to 21
Interface and Input Control Parallel
Package Thickness (nominal) (mm) .650
Additional Features-Analog PWM Capable
MPQ Container TRAY
Regulator - Output Voltage 60
Part Number MC34845CEP
Sample Exception Availability Y
Leadtime (weeks) 16
Maximum Time at Peak Temperature (s) 40
Regulator - Output Current (A) 2.1
Status Active
Device Function LED Drivers
Device Weight (g) .02990
Application/Qualification Tier COMMERCIAL
Pin/Lead/Ball Count 24
Number of Regulators-Boost Switching 1
Budgetary Price($US) 10000 @ $1.15 each
Floor Life 168 HOURS
Halogen Free Yes
Harmonized Tariff (US) Disclaimer 8542.39.0000
Material Composition Declaration (MCD) Download MCD Report Download MCD Report
Package Description and Mechanical Drawing QFN 24 EP 4SQ*0.65 P0.5
Diagnostics None
Package Length (nominal) (mm) 4.000
Package Width (nominal) (mm) 4.000
Peak Package Body Temperature (PPT)(°C) 260

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

Users Guides
文档名称 文档类型 软件 描述
MC34845CEPPDF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
MC34845CEPPDF下载 点击下载 点击下载 AN1902
MC34845CEPPDF下载 点击下载 点击下载 AN3957
Fact Sheets
文档名称 文档类型 软件 描述
MC34845CEPPDF下载 点击下载 点击下载 MC34845FS
Data Sheets
文档名称 文档类型 软件 描述
MC34845CEPPDF下载 点击下载 点击下载 MC34845