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Maxim > Solutions > Instrumentation Cluster
Backlight
Challenges: Supplies need to be rugged. Other requirements are intelligent dimming, large frequency ranges and on-board fault diagnostics. Specialized solutions address either HB (White) LEDs or CCFL type displays with low EMI. For VFD displays see Buck/Boost section.
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection
MAX16823
| Highly Integrated, High-Voltage LED Driver Ideal for Automotive Applications |
| QV PDF |
2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming
MAX16819, MAX16820
| High-Brightness Step-Down LED Driver Controllers with High-Side Current-Sensing and Rapid Current-Pulsing Capability |
| QV PDF |
High-Voltage, 350mA, High-Brightness LED Driver with PWM Dimming and 5V Regulator
MAX16803
| Smallest, High-Voltage, 350mA High-Brightness LED Driver Simplifies LED Lighting Applications, Minimizes External Part Counts, and Saves Cost and Space |
| Key Specifications: High Brightness LED Drivers |
| Part Number |
Topology |
VIN
(V) |
VIN
(V) |
Extended VIN with External Bias |
LED Channels |
ILED per Channel
(A) |
LED String Volt. |
Internal Pwr. MOSFETs |
Freq. |
PWM Dimming Freq.
(kHz) |
PWM Dimming Ratio |
Design Tools |
EV Kit |
| min |
max |
max |
max |
max |
max |
| MAX16823 |
Linear Current Regulator |
5.5 |
40 |
No |
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0.1 |
Vin-0.9V |
Yes |
- |
3 |
1:200 |
EE-Sim |
Yes |
| MAX16819 |
Buck |
4.5 |
28 |
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3 |
26V |
No |
20kHz to 2MHz |
20 |
1:5000 |
- |
No |
| MAX16820 |
Buck |
4.5 |
28 |
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3 |
26V |
No |
20kHz to 2MHz |
20 |
1:5000 |
- |
Yes |
| MAX16803 |
Linear Current Regulator |
6.5 |
40 |
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0.35 |
Vin-1.4V |
Yes |
- |
2 |
1:200 |
- |
Yes |
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See All High Brightness LED Drivers (26)
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| Key Specifications: White LED Drivers |
| Part Number |
Topology |
LEDs |
Config. |
Dimming Control |
VDROPOUT
(mV) |
VCURR_SENSE
(mV) |
POUT
(W) |
ILED
(mA) |
VIN
(V) |
VIN
(V) |
ICC
(mA) |
VOUT
(V) |
Package/Pins |
| max num. of |
typ |
max |
min |
max |
max |
max |
| MAX16803 |
Linear Current Regulator |
100 |
Series-Parallel |
PWM |
0.5 |
200 |
10 |
350 |
6.5 |
40 |
1.4 |
38 |
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See All White LED Drivers (46)
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