HL7543

HL7543 is a synchronous buck converter optimized to supply different sub systems of portable applications. Its input voltage range is 2.3V to 5.5V. HL7543 can deliver up to 600mA with high efficiency, while maintaining over 90% efficiency at load currents as low as 10uA. It operates at a high frequency of 1.2MHz, 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 2.2μH 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 370nA. Even with such a low quiescent current, HL7543 maintains excellent load and line transient responses. At higher loads, the system automatically switches to fixed-frequency Pulse Width Modulation (PWM) operation at 1.2MHz for minimum VOUT ripple and optimal load transient response. In Shutdown Mode, the supply current drops below 270nA, reducing power consumption. The HL7543 is available in a 1.6mm x 0.9mm WLCSP-8 package.

HL7543 is a synchronous buck converter developed specifically for the different core power system requirements of portable product applications. Its input voltage range is from 2.3V to 5.5V. HL7543 provides up to 600mA of output current with high efficiency, while maintaining over 90% efficiency at load currents as low as 10uA. It can operate at a high frequency of 1.2MHz, thereby reducing the values of external inductors and capacitors used. Additional output capacitance can be added without affecting VOUT stability, improving load transient response. At the same time, HL7543 can use a 2.2μH inductor without compromising loop stability. Under moderate and light load conditions, HL7543 employs pulse frequency modulation (PFM) to maintain conversion efficiency, with a typical non-switching static current of 370nA. Even with such a low static current, HL7543 maintains excellent load and line transient response. Under heavy load conditions, the system automatically switches to 1.2MHz 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 below 270nA, thereby reducing power consumption.

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- 商品名: HL7543
- 产品名称: Ultra Low Iq 600mA Buck Converter
- 产品简介: HL7543 is a synchronous buck converter optimized to supply different sub systems of portable applications. Its input voltage range is 2.3V to 5.5V. HL7543 can deliver up to 600mA with high efficiency, while maintaining over 90% efficiency at load currents as low as 10uA. It operates at a high frequency of 1.2MHz, 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 2.2μH 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 370nA. Even with such a low quiescent current, HL7543 maintains excellent load and line transient responses. At higher loads, the system automatically switches to fixed-frequency Pulse Width Modulation (PWM) operation at 1.2MHz for minimum VOUT ripple and optimal load transient response. In Shutdown Mode, the supply current drops below 270nA, reducing power consumption. The HL7543 is available in a 1.6mm x 0.9mm WLCSP-8 package.
HL7543 is a synchronous buck converter developed specifically for the different core power system requirements of portable product applications. Its input voltage range is from 2.3V to 5.5V. HL7543 provides up to 600mA of output current with high efficiency, while maintaining over 90% efficiency at load currents as low as 10uA. It can operate at a high frequency of 1.2MHz, thereby reducing the values of external inductors and capacitors used. Additional output capacitance can be added without affecting VOUT stability, improving load transient response. At the same time, HL7543 can use a 2.2μH inductor without compromising loop stability. Under moderate and light load conditions, HL7543 employs pulse frequency modulation (PFM) to maintain conversion efficiency, with a typical non-switching static current of 370nA. Even with such a low static current, HL7543 maintains excellent load and line transient response. Under heavy load conditions, the system automatically switches to 1.2MHz 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 below 270nA, thereby reducing power consumption.
- 370nA operational Quiescent current
- Input Voltage Range: 2.3V~5.5V
- Output Voltage Range:0.66V~3.4V
- Selectable Output Voltages via VSEL1-3
  HL7543WL01 : 8 options 1.2V – 3.3V
  HL7543WL02 : 8 options 1.3V – 3.1V
  HL7543WL03 : 8 options 0.7V – 3.1V
  HL7543WL04 : 8 options 0.66V – 2.95V
- Maximum Output Current:
  600mA for VIN > VOUT + 500mV
  1A for VIN > VOUT + 1V
- 1.2MHz PWM with Seamless PWM/PFM Switching for Light-load Efficiency
- Automatic transition to 100% mode
- Good Load and Line Transient
- Comprehensive Protections
  Input Under-Voltage Lockout (UVLO)
  Short-Circuit Protection
  Thermal Shutdown
- 1.6 x 0.9mm 8-Bump WLCSP
キーワード:
- 7543
- Subtitle
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- Wearables
- Fitness Trackers
- Smart Watches
For the full datasheet, please contact sales.cn@halomicro.com to submit your request.

For more sample information, please contact Get samples to submit your request,

or contact marketing@halomicro.cn by email to state your requirements .

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