The TPS61195 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2.5A/50V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 96 LEDs. Unused sinks are disabled by tying them to ground. The boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The TPS61195 supports multiple brightness dimming methods. During PWM dimming, each IFB pin’s current is turned on/off at the duty cycle and frequency determined by an integrated pulse width modulation (PWM). The frequency of this signal is resistor programmable, while the duty cycle is controlled directly either from an external PWM signal input to the DPWM pin or through the SMBUS interface. Additionally, the SMBUS interface provides some operational reporting data such as if one or more strings have failed or if the IC is over-heating. In direct PWM dimming mode, each IFB current is turned on/off at same duty cycle and frequency as the PWM signal input on the DPWM pin. In analog dimming mode, the input PWM duty cycle information is translated to analog signal to control the WLED current signal linearly over 1% to 100% brightness area.

The TPS61195 integrates over-current and short-circuit protection, soft start and over temperature protection circuit. The device also provides programmable output over-voltage protection, and the threshold is adjusted by external resistor divider combination.

The TPS61195 IC has built-in linear regulator for the IC supply. The device is in a 4×4 mm QFN package.

• 4.5V to 21V Input Voltage
• Integrated 2.5A 50V MOSFET
• 600kHz to 1MHz Programmable Switching Frequency
• Adaptive Boost Output for Best Efficiency
• Designed to Use Small L-C Components
• Internal Loop Compensation
• Eight Current Sinks of 30mA
• Support up to Total 96 LEDs
• 1% Current Matching
• PWM and SMBus Brightness Interface
• 8-bits (256 steps) Brightness Level
• Programmable Over Voltage Threshold
• Built-in WLED Open/Short Protection
• Over Thermal Protection
• 28L 4×4 WQFN
• APPLICATIONS
  • Notebook/Netbook LCD Display Backlighting

• Number of channels (#)
• 8
• Vin (Min) (V)
• 4.5
• Vin (Max) (V)
• 21
• Vout (Min) (V)
• 15
• Vout (Max) (V)
• 45
• Type
• Inductive
• Switching frequency (Max) (kHz)
• 1000
• LED current per channel (mA)
• 30
• Peak efficiency (%)
• 94
• Topology
• Boost
• Features
• Load Disconnect During Shutdown
• Operating temperature range (C)
• -40 to 85

TPS61195的完整型号有：TPS61195RUYR、TPS61195RUYT，以下是这些产品的关键参数及官网采购报价：

TPS61195RUYR，工作温度：-40 to 85，封装：WQFN (RUY)-28，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS61195RUYR的批量USD价格：1.214（1000+）

TPS61195RUYT，工作温度：-40 to 85，封装：WQFN (RUY)-28，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS61195RUYT的批量USD价格：1.457（1000+）

TPS61195EVM-460 — 用于 LCD 背光的 TPS61195 96 LED、8 通道白光 LED 驱动器的评估模块

The TPS61195EVM-460 is a fully assembled and tested circuit for evaluating the TPS61195 Adjustable, 8-Channel White LED Driver IC. If LEDs are not available for connection to the evaluation module, the WLEDEVM-260 board can be ordered.

TPS61195EVM-SW — TPS61195 评估模块软件

TPS61195EVM 软件可让您通过 SMBus 接口控制 TPS61195EVM。此接口允许用户：

• 启用/禁用 IC 并在明暗调节模式之间进行切换，
• 通过 IC 电流吸入器控制 LED 电流，从而对连接的 LED 进行明暗调节并
• 监控故障情况。

IC 将在没有软件时运行，且必须配置为借助使用了 SEL1 和 SEL2 引脚的软件运行。请参阅数据表和/或 EVM 用户指南，以了解更多信息。

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