有源矩阵有机发光二极管(AMOLED)面板供电的芯片,升压负压转换器

产品概述 返回TOP
CXLC8961是一款用于有源矩阵有机发光二极管(AMOLED)面板供电的芯片。其内部集成了一个升压转换器和一个负压转换器，非常适合用于由电池供电的电子设备。率的升压转换器内部集成了0.5Ω的NMOS功率管和0.6Ω的PMOS功率管，带载能力达250mA，1.4MHz的工作频率允许采用较小的电感。升压转换器采用同步整流技术并具有真关断功能，内部数字软启动控制浪涌电流。其输出可通过外部反馈电阻调节为4V~8V。的负压转换器内部集成了0.4Ω的NMOS功率管和0.5Ω的PMOS功率管，带载能力达250mA，1.4MHz的工作频率允许采用较小的电感。输出范围-6V~-1V，外部可调。效率可达80%以上，内部数字软启动控制浪涌电流。CXLC8961采用12引脚的小型TDFN封装(3mm x 3mm x 0.6mm)。工作温度范围-40oC to +85oC。The CXLC8961 generates power supply rails for active-matrix organic light emitting diode (AMOLED) displays. It includes a step-up DC-DC and an inverting DC-DC converter making it suitable for battery operated products. The step-up converter is a high-accuracy power-efficiency 250mA output regulator. It features an internal 0.5Ω N-MOSFET, 0.6Ω P-MOSFET and 1.4MHz operation frequency allowing the use of small inductor and capacitors. The integrated synchronous rectifier allows the true shutdown of the outputs. An internal digital soft-start function controls inrush currents. The step-up converter output can be externally set 4V to 8V. The inverting converter is a high-accuracy 250mA regulator. It features an internal 0.4Ω N-MOSFET, 0.5Ω P-MOSFET and 1.4MHz operation frequency allowing the use of small inductor and capacitors. Its -6V to -1V output efficiency up to 80% at 150mA. An internal digital soft-start function controls inrush currents. The CXLC8961 is available in a small (3mm× 3mm× 0.6mm) 12 pin thin TDFN package and operates over the -40oC to +85oC temperature range.
产品特点 返回TOP
• 输入电压范围2.5V~4.5V
• 1.4MHz电流模升压转换器
- 输出范围外部可调4V~8V
- 带载高达250mA
- (+/- 1%)
- 集成18V 0.5Ω NMOS功率管
- 集成18V 0.6Ω PMOS同步管
- 峰值电流限制
- 达85%
- 小占空比下较好的工作
• 1.4MHz电流模负压转换器
- 输出范围外部可调-6V~-1V
- 带载高达250mA
- (+/- 2%)
- 集成18V 0.5Ω PMOS功率管
- 集成18V 0.4Ω NMOS同步管
- 峰值电流限制
- 达80%
• 具有真关断功能
• 具有输出欠压关断功能
• 过温保护
• 12脚 3mm x 3mm TDFN封装
• 符合RoHS规范及Lead(Pb)-Free Halogen-Free

2.5V to 4.5V Input Supply Range

1.4MHz Current Mode Step Up Regulator
- External Programmable 4V~8V Output Voltage
- Maximum 250mA Output
- High Accuracy (+/- 1%)
- Built-In 18V, 0.5
N-MOSFET
- Built-In 18V, 0.6
P-MOSFET
Synchronous Rectifier
- Cycle-by-Cycle Current Limit
- More than 85% Efficiency at 150mA
- Good Low-Duty Factor Operation

1.4MHz Current Mode Inverting Regulator
- -6V to -1V
- Maximum 250mA Output
- High Accuracy (+/- 1%)
- Built-In 18V, 0.5
P-MOSFET
- Built-In 18V, 0.4
N-MOSFET
Synchronous Rectifier
- Cycle-by-Cycle Current Limit
- Up to 80% Efficiency at 150mA

True Shutdown Mode for Dual Outputs

Timer-Delayed Output Under-Voltage Shutdown for
Dual Outputs

Over Temperature Protection

12 Pin 3mm′ 3mm thin TDFN Package

RoHS Compliant and Lead(Pb)-Free
Halogen-Free
应用范围 返回TOP
• OLED显示屏
• 手机，DSC显示屏
• 汽车导航

OLED Displays

Phone, DSC Display

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