TPS61240IDRVRQ1

The TPS61240-Q1 is a high-efficiency synchronous boost DC/DC converter optimized for products powered by three alkaline/NiCd/NiMH cells or a single-cell Li-Ion/Li-Polymer battery. The TPS61240-Q1 supports output currents up to 450mA. The TPS61240-Q1 has an input valley current limit of 500mA. The TPS61240-Q1 provides a fixed 5V (typical) output voltage over an input voltage range of 2.3V to 5.5V, supporting batteries with a wider voltage range. During shutdown, the load is completely disconnected from the battery. The TPS61240-Q1 boost converter is based on a quasi-constant on-time valley current mode control scheme. When disabled, the TPS61240-Q1 presents high impedance at the output voltage pin. This makes the device suitable for applications where a regulated output bus needs to be driven by another power source while the TPS61240-Q1 is disabled. During light load, the device automatically enters pulse-skipping mode to achieve maximum efficiency at minimal quiescent current. In shutdown mode, current consumption is reduced to below 1μA. The TPS61240-Q1 supports the use of small inductors and capacitors, enabling a compact solution size. The TPS61240-Q1 is available in a 2mm×2mm WSON package.

Applications

• Advanced Driver Assistance Systems (ADAS)
• Front Camera
• Surround View System
• ECU
• Radar and LIDAR
• Automotive Infotainment and Instrument Cluster
• Head Unit
• HMI and Display

Key features

• Qualified for automotive applications with the following AEC-Q100 results:
• Device temperature grade TPS61240IDRVRQ1: Grade 3, -40°C to +85°C ambient operating temperature; TPS61240TDRVRQ1: Grade 2, -40°C to +105°C ambient operating temperature
• Device HBM ESD classification level 2
• Device CDM ESD classification level C6
• Efficiency greater than 90% under standard operating conditions
• DC output voltage total accuracy of 5V±2%
• 30μA typical quiescent current
• Industry-leading line and load transient response
• Wide input voltage range of 2.3V to 5.5V
• Output current up to 450mA
• Automatic PFM/PWM mode transition
• Low-ripple power save mode for improved light-load efficiency
• Internal soft-start with 250μs typical startup time
• 3.5MHz typical operating frequency
• Load disconnect during shutdown
• Overcurrent and thermal shutdown protection
• Only 3 SMT external components required (1 MLCC inductor and 2 ceramic capacitors)
• Total solution size less than 13mm²
• 2mm×2mm WSON package