TEL: 18617042732 ***: 3073924495 The TPS61170 is a monolithic, high-voltage switching regulator with integrated 1.2-A, 40-V power MOSFET. The device can be configured in several standard switching-regulator topologies, including boost and SEPIC. The device has a wide input-voltage range to support applicati*** with input voltage from multicell batteries or regulated 5-V, 12-V power rails.
The TPS61170 operates at a 1.2-MHz switching frequency, allowing the use of low-profile inductors and low-value ceramic input and output capacitors. External loop compensation components give the user flexibility to optimize loop compensation and transient resp***e. The device has built-in protection features, such as pulse-by-pulse overcurrent limit, soft start, and thermal shutdown.
The FB pin regulates to a reference voltage of 1.229 V. The reference voltage can be lowered using a 1-wire digital interface (Easyscale™ protocol) through the CTRL pin. Alternatively, a pulse width-modulation (PWM) signal can be applied to the CTRL pin. The duty cycle of the signal reduces the feedback reference voltage proportionally.
The TPS61170 is ***ailable in a 6-pin 2-mm × 2-mm QFN package, allowing a compact power-supply solution.
特性
· 3-V to 18-V Input Voltage Range
· High Output Voltage: Up to 38 V
· 1.2-A Integrated Switch
· 1.2-MHz Fixed Switching Frequency
· 12 V at 300 mA and 24 V at 150 mA From
5-V Input (Typical)
· Up to 93% Efficiency
· Output Voltage Reprogramming
· Skip-Switching Cycle for Output
Regulation at Light Load
· Built-in Soft Start