MAX25510
4-Channel, Low-Voltage, 120mA LED Backlight Drivers with Integrated Boost Converter
Industry Best Efficiency, Integrated Boost Converter LED Driver
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主な特長
アプリケーション/用途
| VIN (V) (min) | 3 |
| VIN (V) (max) | 36 |
| Max. No. of LEDs | 40 |
| # LED Channels | 4 |
| LED Configuration | Series-Parallel |
| ILED per Channel (A) (max) | 0.12 |
| PWM Dimming Freq. (kHz) (max) | 20 |
| Dimming Ratio (max) | 16666 |
| Dimming Control | Analog PWM |
| VDROPOUT (mV) (typ) | 750 |
| POUT (W) | 15 |
| ICC (mA) (max) | 10 |
| LED String Volt. (V) (max) | 40 |
| Switching Frequency (kHz) | 400 2200 |
| Package/Pins | TQFN-CU/24 |
| Budgetary Price (See Notes) | 0.77 |
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Technical Docs
パラメーター
| VIN (V) (min) | 3 |
| VIN (V) (max) | 36 |
| Max. No. of LEDs | 40 |
| # LED Channels | 4 |
| LED Configuration | Series-Parallel |
| ILED per Channel (A) (max) | 0.12 |
| PWM Dimming Freq. (kHz) (max) | 20 |
| Dimming Ratio (max) | 16666 |
| Dimming Control | Analog PWM |
| VDROPOUT (mV) (typ) | 750 |
| POUT (W) | 15 |
| ICC (mA) (max) | 10 |
| LED String Volt. (V) (max) | 40 |
| Switching Frequency (kHz) | 400 2200 |
| Package/Pins | TQFN-CU/24 |
| Budgetary Price (See Notes) | 0.77 |
主な特長
- Operate down to 3V on Battery Input after Start-Up
- Wide Boost Duty Cycle to Support Low Input Voltage
- Boost or SEPIC Current-Mode DC-DC Controller
- 400kHz to 2.2MHz Operating Frequency Range
- Spread Spectrum Available
- Can Be Synchronized to an External Clock
- LED Current Sinks
- Up to 120mA Output Current per String
- Low OUT_ Regulation Voltage for Best Efficiency
- Optional Phase-Shifting of Outputs
- 16667:1 Dimming Ratio at 200Hz
- NTC Input for LED Current Foldback
- Analog Dimming Capable
- Built-In Automatic Fading Functionality
- FLTB Output Provides Diagnostic Information
- Shorted or Open LEDs
- Thermal Shutdown
- Output Undervoltage
- Compact, 4mm x 4mm TQFN Package
- AEC-Q100 Grade 1
アプリケーション/用途
- 車載セントラルインフォメーションディスプレイ
- 車載ヘッドアップディスプレイ
- 車載計器クラスタ
説明
The MAX25510/MAX25511 are 4-channel, white-LED backlight drivers with an integrated current-mode boost converter that operate over a switching frequency range of 400kHz to 2.2MHz and incorporate spread spectrum. Phase-shifting of the output channels is included as an option to further reduce EMI.
The devices provide up to 120mA per channel and include a control output for an external nMOS series switch. These devices are capable of operating down to 3V after start-up.
The MAX25510 has a boost current limit of 3A (min), while the MAX25511 implements a higher minimum current limit of 4.5A for increased output power.
The MAX25510/MAX25511 are available in a compact TQFN package and operate over the temperature range -40°C to +125°C.
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