TPS61140 Series
2x 27V, 700mA switch, 1.2MHz boost converter - single inductor white LED & OLED driver with 28V OVP
Manufacturer: Texas Instruments
Catalog(4 parts)
| Part | Internal Switch(s)▲▼ | Frequency▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Current - Output / Channel▲▼ | Mounting Type | Supplier Device Package | Topology | Dimming | Type | Voltage - Supply (Min)▲▼ | Applications | Package / Case | Voltage - Supply (Max)▲▼ | Number of Outputs▲▼ | Voltage - Output▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ | Utilized IC / Part | Features | Supplied Contents | Outputs and Type | Outputs and Type▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS61140DRCTG4LED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 35mA 10-VSON (3x3) | 1200000 Hz | 85 °C | -40 °C | 0.03500000014901161 A | Surface Mount | 10-VSON (3x3) | Step-Up (Boost) | PWM | DC DC Regulator | 2.5 V | Backlight | 10-VFDFN Exposed Pad | 6 V | 2 ul | 27 V | ||||||||
Texas Instruments TPS61140DRCTLED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 35mA 10-VSON (3x3) | 1200000 Hz | 85 °C | -40 °C | 0.03500000014901161 A | Surface Mount | 10-VSON (3x3) | Step-Up (Boost) | PWM | DC DC Regulator | 2.5 V | Backlight | 10-VFDFN Exposed Pad | 6 V | 2 ul | 27 V | ||||||||
Texas Instruments TPS61140DRCRLED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 35mA 10-VSON (3x3) | 1200000 Hz | 85 °C | -40 °C | 0.03500000014901161 A | Surface Mount | 10-VSON (3x3) | Step-Up (Boost) | PWM | DC DC Regulator | 2.5 V | Backlight | 10-VFDFN Exposed Pad | 6 V | 2 ul | 27 V | ||||||||
0.01510000042617321 A | 28 V | 6 V | 3 V | TPS61140 | Dimmable | Board(s) | Non-Isolated | 1 ul |
Key Features
• 2.5-V to 6-V Input Voltage RangeTwo Outputs Each up to 27 V0.7-A Integrated SwitchBuilt-In Power Diode1.2-MHz PWM for WLED DriverPFM for OLED SupplyIndividually Programmable OutputInput to Output IsolationShort-Circuit ProtectionBuilt-In Soft StartOvervoltage ProtectionUp to 82% EfficiencyUp to 30 kHz PWM Dimming FrequencyAvailable in a 10 Pin, 3 × 3 mm QFN PackageAPPLICATIONSClamshell Phone With OLED/LCD Screen2.5-V to 6-V Input Voltage RangeTwo Outputs Each up to 27 V0.7-A Integrated SwitchBuilt-In Power Diode1.2-MHz PWM for WLED DriverPFM for OLED SupplyIndividually Programmable OutputInput to Output IsolationShort-Circuit ProtectionBuilt-In Soft StartOvervoltage ProtectionUp to 82% EfficiencyUp to 30 kHz PWM Dimming FrequencyAvailable in a 10 Pin, 3 × 3 mm QFN PackageAPPLICATIONSClamshell Phone With OLED/LCD Screen
Description
AI
The TPS61140/1 is a dual output boost converter IC. It is intended to be configured as a highly integrated power solution providing regulated voltage and current output with one boost converter. This device is ideal for driving the OLED sub display and WLED backlight for the LCD main display in clam shell phones. The voltage and current 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. When only the voltage output is enabled, the boost converter is controlled by pulse frequency modulation (PFM) in order to achieve high efficiency over a wide load range. If the current output is selected, the device adopts a 1.2-MHz pulse width modulation control (PWM) method in order to maximize output current. Applying an external PWM signal to the select pin (SELI) reduces the output current thereby allowing WLED dimming.
The TPS61140/1 has a built-in power MOSFET and power diode; thereby, eliminating the needs for any external active power components. In addition, the high switching frequency reduces the external inductor and capacitor sizes. Overall, the IC provides a highly compact solution with high efficiency and plenty of flexibility.
The TPS61140/1 is a dual output boost converter IC. It is intended to be configured as a highly integrated power solution providing regulated voltage and current output with one boost converter. This device is ideal for driving the OLED sub display and WLED backlight for the LCD main display in clam shell phones. The voltage and current 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. When only the voltage output is enabled, the boost converter is controlled by pulse frequency modulation (PFM) in order to achieve high efficiency over a wide load range. If the current output is selected, the device adopts a 1.2-MHz pulse width modulation control (PWM) method in order to maximize output current. Applying an external PWM signal to the select pin (SELI) reduces the output current thereby allowing WLED dimming.
The TPS61140/1 has a built-in power MOSFET and power diode; thereby, eliminating the needs for any external active power components. In addition, the high switching frequency reduces the external inductor and capacitor sizes. Overall, the IC provides a highly compact solution with high efficiency and plenty of flexibility.