3MHz 1.5A Buck Converter
HL7507
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Product Brief Datasheet
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- 商品名: HL7507
- 产品名称: 3MHz 1.5A Buck Converter
- 产品简介: HL7507 is a synchronous buck converter optimized to supply different sub systems of portable applications. Its input voltage range is 2.5V to 5.5V. Its output voltage is a factory pre-set value, and 2 optional output ranges are available for various application fields. HL7507 can deliver up to 1.5A with 80% efficiency, while maintaining over 80% efficiency at load currents as low as 10mA. It operates at a high frequency of 3MHz, which greatly reduces the value of the external components. A wide range of output capacitors can be used to optimize VOUT stability during load transients. Inductors from 0.33uH to 1.0uH may be used without affecting loop stability. At moderate to light loads, Pulse Frequency Modulation (PFM) is used to maintain conversion efficiency with a typical non-switching quiescent current of 42µA. Even with such a low quiescent current, HL7507 maintains excellent load and line transient responses. At higher loads, the system automatically switches to fixed-frequency Pulse Width Modulation (PWM) operation at 3MHz for minimum VOUT ripple and optimal load transient response. In Shutdown Mode, the supply current drops below 1µA, reducing power consumption. PFM Mode can be disabled if needed by setting MODE pin high. HL7507 can also synchronize to an external clock signal at MODE pin if it is qualified to have the correct frequency value around 1.5MHz. The HL7507 is available in a 1.6mm*1.6mm DFN-6 package.
HL7507 is a synchronous buck converter developed specifically for the different core power system requirements of portable product applications. Its input voltage range is from 2.5V to 5.5V. The output voltage value of HL7507 is factory preset, and it has 2 optional output ranges suitable for various application fields. HL7507 can provide up to 1.5A of current with an efficiency of 80%, while maintaining over 80% efficiency at a load current as low as 10mA. It can operate at a high frequency of 3MHz, thereby reducing the values of external inductors and capacitors used. Additional output capacitance can be added without affecting VOUT stability, improving load transient response. Meanwhile, without affecting loop stability, HL7507 can use inductors ranging from 0.33μH to 1.0μH. Under medium and light load conditions, HL7507 uses pulse frequency modulation (PFM) to maintain conversion efficiency, with a typical non-switching static current of 42µA. Even with such a low static current, HL7507 still maintains excellent load and line transient response. Under heavy load conditions, the system automatically switches to 3MHz fixed frequency pulse width modulation (PWM) operation to achieve minimal VOUT ripple and optimal load transient response. In shutdown mode, the power supply current drops to below 1μA, thereby reducing power consumption. If needed, HL7507 can set the MODE pin to high to disable PFM mode. If an external clock confirmation is used at a frequency of 1.5MHz, HL7507 can connect an external clock signal to the MODE pin for signal clock synchronization.
- Input Voltage Range: 2.5V~5.5V
- Output Voltage Range:0.3V~2.75V
- Factory Programmable Fixed Output Voltage
- Maximum Output Current: 1.5A
- 3MHz PWM with Seamless PWM/PFM Switching for Light-load Efficiency
- Excellent Load and Line Transient
- Quiescent Current in PFM Tristate: 42µA
- Comprehensive Protection
- Input Under-Voltage Lockout (UVLO)
- Over Current and Short-Circuit Protection
- Thermal Shut-down
- Input Under-Voltage Lockout (UVLO)
- 1.6 x 1.6mm DFN-6 Package
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