Frequency - Switching:	1.2MHz
Base Part Number:	TPS40305
Supplier Device Package:	10-VSON (3x3)
Package / Case:	10-VFDFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	85%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 20 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS40305DRCT is a dual-mode single-supply synchronous step-down regulator capable of operation as a constant voltage controller or a constant current controller. It provides two independent, adjustable currents (I1 and I2) with both pulse-width modulation (PWM) and analog control. For applications requiring both constant voltage and constant current control or voltage and current limiting during dynamic load conditions, the TPS40305DRCT is an ideal choice.A single-supply input voltage of 2.7V to 5.5V powers the device, allowing significant cost and complexity savings over dual-supply designs. The low power operation of the TPS40305DRCT, combined with its current-sense circuitry, allows for higher efficiency operation in power applications, such as LED driving.The device also features a wide-frequency programmable operating range. With a programmable oscillator frequency range of 150kHz to 1.3MHz, the TPS40305DRCT can easily and efficiently support demanding system designs. The independent I1 and I2 loop compensation settings can also provide greater precision in controlling regulator loop stability.The TPS40305DRCT has protection features that safeguard the device from damage if the output current exceeds the regulation loop limits for either I1 or I2. The device features over-current protection (OCP) in both independent and combined current modes, as well as peak-current-mode control (PCMO) to help protect the regulator during high load conditions.The TPS40305DRCT is ideal for automotive, industrial, and telecom applications that require high efficiency, and low noise and EMI performance across a wide range of temperatures. Low standby power, high efficiency and small external components also makes the TPS40305DRCT well-suited for portable devices and applications operating on bat-teries.

TPS40305DRCT application field and work principle

TPS40305DRCT is a dual-mode single-supply synchronous step-down regulator capable of operation as a constant voltage controller or a constant current controller. It provides two independent, adjustable currents (I1 and I2) with both pulse-width modulation (PWM) and analog control. For applications requiring both constant voltage and constant current control or voltage and current limiting during dynamic load conditions, the TPS40305DRCT is an ideal choice.

A single-supply input voltage of 2.7V to 5.5V powers the device, allowing significant cost and complexity savings over dual-supply designs. The low power operation of the TPS40305DRCT, combined with its current-sense circuitry, allows for higher efficiency operation in power applications, such as LED driving.

The device also features a wide-frequency programmable operating range. With a programmable oscillator frequency range of 150kHz to 1.3MHz, the TPS40305DRCT can easily and efficiently support demanding system designs. The independent I1 and I2 loop compensation settings can also provide greater precision in controlling regulator loop stability.

The TPS40305DRCT has protection features that safeguard the device from damage if the output current exceeds the regulation loop limits for either I1 or I2. The device features over-current protection (OCP) in both independent and combined current modes, as well as peak-current-mode control (PCMO) to help protect the regulator during high load conditions.

The TPS40305DRCT is ideal for automotive, industrial, and telecom applications that require high efficiency, and low noise and EMI performance across a wide range of temperatures. Low standby power, high efficiency and small external components also makes the TPS40305DRCT well-suited for portable devices and applications operating on bat-teries.

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