TPS61150A Series
Dual, 2x 27V, 700mA switch, 1.2MHz boost converter with Single Inductor white LED driver (up to 2x6)
Manufacturer: Texas Instruments
Catalog
Dual, 2x 27V, 700mA switch, 1.2MHz boost converter with Single Inductor white LED driver (up to 2x6)
Key Features
• 2.5V to 6V Input Voltage Range0.7A Integrated SwitchBuilt-in Power Diode1.2MHz Fixed PWM FrequencyIndividually Programmable Output CurrentInput-to-Output IsolationBuilt-in Soft Start27V Overvoltage Protection3% at 15mA Matching between Two Current Strings, Improvement from TPS61150/1Up to 83% EfficiencyUp to 30kHz PWM Dimming FrequencyAvailiable in a 10 Pin, 3 × 3 mm QFN PackageAPPLICATIONSUp to 14 WLED Driver for Media Form Factor DisplaySub and Main Display Backlight in Clam Shell PhonesDisplay and Keypad Backlight in Portable Equipment2.5V to 6V Input Voltage Range0.7A Integrated SwitchBuilt-in Power Diode1.2MHz Fixed PWM FrequencyIndividually Programmable Output CurrentInput-to-Output IsolationBuilt-in Soft Start27V Overvoltage Protection3% at 15mA Matching between Two Current Strings, Improvement from TPS61150/1Up to 83% EfficiencyUp to 30kHz PWM Dimming FrequencyAvailiable in a 10 Pin, 3 × 3 mm QFN PackageAPPLICATIONSUp to 14 WLED Driver for Media Form Factor DisplaySub and Main Display Backlight in Clam Shell PhonesDisplay and Keypad Backlight in Portable Equipment
Description
AI
The TPS6115x is a high-frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is a dedicated selection pin for each output so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on SEL pins or an analog voltage on the ISET pins, resulting in PWM dimming of the WLEDs. The boost regulator runs at a 1.2-MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with pulse frequency modulation (PFM) control.
The two current outputs are ideal for driving WLED backlights for the sub and main displays in clamshell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLEDs for one large display.
In addition to the small inductor, small capacitor, and 3-mm × 3-mm VSON package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the device provides an extremely compact solution with high efficiency and plenty of flexibility.
The TPS6115x is a high-frequency boost converter with two regulated current outputs for driving WLEDs. Each current output can be individually programmed through external resistors. There is a dedicated selection pin for each output so the two outputs can be turned on separately or simultaneously. The output current can be reduced by a pulse width modulation (PWM) signal on SEL pins or an analog voltage on the ISET pins, resulting in PWM dimming of the WLEDs. The boost regulator runs at a 1.2-MHz fixed switching frequency to reduce output ripple and avoid audible noises associated with pulse frequency modulation (PFM) control.
The two current outputs are ideal for driving WLED backlights for the sub and main displays in clamshell phones. The two outputs can also be used for driving display and keypad backlights. When used together, the two outputs can drive up to 14 WLEDs for one large display.
In addition to the small inductor, small capacitor, and 3-mm × 3-mm VSON package, the built-in MOSFET and diode eliminate the need for any external power devices. Overall, the device provides an extremely compact solution with high efficiency and plenty of flexibility.
