HL7594

HL7594 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 range is either 0.600V to 1.394V in 6.25mV steps or 0.27V to 0.6272V in 2.8125mV steps, programmable through an I2C interface. Its output voltage can be adjusted on the fly to provide Dynamic Voltage Scaling (DVS) function with a programmable slew rate. HL7594 can deliver up to 3A with max 88% efficiency, while maintaining over 80% efficiency at load currents as low as 10mA. It operates at fixed frequency of 2.4MHz, which 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 0.33µH to 0.47µH 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 48µA. Even with such a low quiescent current, HL7594 maintains excellent load and line transient responses. At higher loads, the system automatically switches to fixed-frequency Pulse Width Modulation (PWM) operation at 2.4MHz 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 through I2C registers. HL7594 supports VOUT remote sensing. Its feedback signal VOUT can be connected close to the power supply pin of the load for a true point-of-load operation without affecting control loop stability. HL7594 features programmable delay times on VOUT startup. The HL7594 is available in a 15-bump, 0.4mm pitch, 2.01mm x 1.21mm WLCSP.

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- Commodity name: HL7594
- 产品名称: I²C Programmable 3A DVS Buck Converter
- 产品简介: HL7594 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 range is either 0.600V to 1.394V in 6.25mV steps or 0.27V to 0.6272V in 2.8125mV steps, programmable through an I2C interface. Its output voltage can be adjusted on the fly to provide Dynamic Voltage Scaling (DVS) function with a programmable slew rate. HL7594 can deliver up to 3A with max 88% efficiency, while maintaining over 80% efficiency at load currents as low as 10mA. It operates at fixed frequency of 2.4MHz, which 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 0.33µH to 0.47µH 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 48µA. Even with such a low quiescent current, HL7594 maintains excellent load and line transient responses. At higher loads, the system automatically switches to fixed-frequency Pulse Width Modulation (PWM) operation at 2.4MHz 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 through I2C registers. HL7594 supports VOUT remote sensing. Its feedback signal VOUT can be connected close to the power supply pin of the load for a true point-of-load operation without affecting control loop stability. HL7594 features programmable delay times on VOUT startup. The HL7594 is available in a 15-bump, 0.4mm pitch, 2.01mm x 1.21mm WLCSP.
- Input Voltage Range: 2.5V~5.5V
- Programmable Output Voltage:
  - 0.600V to 1.394V in 6.25 mV steps
  - 0.27V to 0.6272V in 2.8125mV steps
- Maximum Output Current: 3A
- 2.4MHz PWM with Seamless PWM/PFM Switching for Light-load Efficiency
- Dynamic Voltage Scaling (DVS) with Programmable Voltage Slew Rate
- Excellent Load and Line Transient
- Programmable VOUT startup delay times
- Quiescent Current in PFM Tristate: 48µA
- I²C Interface with SM, FM, FM+ and HS Modes
- Comprehensive Protection
  - Input Under-Voltage Lockout (UVLO)
  - Input Over-Voltage Protection (OVP)
  - Over Current and Short-Circuit Protection
  - Thermal Shut-down
- 2.01mm x 1.21mm 15-Bump WLCSP
- Subtitle
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- Application Processors
- Memory, Hard Disk Drive and SSD
- Smart Phones
- Tablets
- Handheld Devices

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