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DS3882
Dual-Channel Automotive CCFL Controller
Low Component Count, Feature-Rich, Automotive Inverter Solution
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Status
Active: In Production.
Description
The DS3882 is a dual-channel cold-cathode fluorescent lamp (CCFL) controller for automotive applications that provides up to 300:1 dimming. It is ideal for driving CCFLs used to backlight liquid crystal displays (LCDs) in navigation and infotainment applications and for driving CCFLs used to backlight instrument clusters. The DS3882 is also appropriate for use in marine and aviation applications.
The DS3882 features EMI suppression functionality and provides a lamp current overdrive mode for rapid lamp heating in cold weather conditions. The DS3882 supports configurations of 1 or 2 lamps with fully independent lamp control and minimal external components. Multiple DS3882 controllers can be cascaded to support applications requiring more than 2 lamps. Control of the DS3882, after initial programming setup, can be completely achieved through I²C software communication. Many DS3882 functions are also pin-controllable if software control is not desired.
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Data Sheet
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Key Features
- Dual-Channel CCFL Controllers for Backlighting LCD Panels and Instrument Clusters in Automotive Navigation/Infotainment Applications
- Minimal External Components Required
- I²C Interface
- Per-Channel Lamp-Fault Monitoring for Lamp-Open, Lamp-Overcurrent, Failure to Strike, and Overvoltage Conditions
- Status Register Reports Fault Conditions
- Accurate (±5%) Independent On-Board Oscillators for Lamp Frequency (40kHz to 100kHz) and DPWM Burst-Dimming Frequency (22.5Hz to 440Hz)
- Lamp and DPWM Frequencies can be Synchronized with External Sources to Reduce Visual LCD Artifacts in Video Applications
- Optional Spread-Spectrum Lamp Clock Reduces EMI
- Lamp Frequency can be Stepped Up or Down to Move EMI Spurs Out of Band
- Lamp Current Overdrive Mode with Automatic Turn-Off Quickly Warms Lamp in Cold Temperatures
- Analog and Digital Brightness Control
- 300:1 Dimming Range Possible Using the Digital Brightness Control Option
- Programmable Soft-Start Minimizes Audible Transformer Noise
- On-Board Nonvolatile (NV) Memory Allows Device Customization
- 8-Byte NV User Memory for Storage of Serial Numbers and Date Codes
- Low-Power Standby Mode
- 4.75V to 5.25V Single-Supply Operation
- Temperature Range: -40°C to +105°C
- 28-Pin TSSOP Package
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Applications/Uses
- Automotive LCDs
- Instrument Clusters
- Marine and Aviation LCDs
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Key Specifications:
| CCFL Controllers |
| Part Number |
VIN
(V) |
VIN
(V) |
Topology |
Channels |
Dimming Interface |
Freq. |
EV Kit |
Industry Qualified |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| min |
max |
max w/pins |
See Notes |
| DS3882 |
4.75 |
5.25 |
Push-Pull |
2 |
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Fixed PWM |
Yes |
Automotive - General |
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64.7 |
-40 to +105 |
$2.06 @1k |
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See All CCFL Controllers (14)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| DS3882E+C
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Active |
TSSOP;28 pin;64.7 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0171 (PDF)
Use pkgcode/variation: U28+2*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| DS3882E+T&R/C
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Active |
TSSOP;28 pin;64.7 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0171 (PDF)
Use pkgcode/variation: U28+2*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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| DS3881 |
Single-Channel, Automotive CCFL Controller |
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Information Index
Document Ref.: 19-5666
Rev 2;
2011-01-05
This page last modified: 2011-01-05
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