PM6680A Dual synchronous step down controller with adjustable output voltages plus LDO
PM6680A is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with losses current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The PM6680A provides a selectable switching frequency, allowing three different values of switching frequencies for the two operation of the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9V to 5V and from 0.9V to 3.3V respectively
技术特性
- 6V to 36V input voltage range
- Adjustable output voltages
- 5V LDO delivers 100mA peak current
- 1.237V ±1% reference voltage available externally
- Current sensing using low side MOSFETs RDS(on)
- Valley current sensing
- Soft-start internally fixed at 2ms
- Soft output discharge
- Latched OVP and UVP
- Selectable pulse skipping at light loads
- Selectable minimum frequency (33kHz) in pulse skip mode
- 5mW maximum quiescent power
- Independent power good signals
- Output voltage ripple compensation
- Thermal shutdown
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功能框图
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PM6680A 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| PM6680ATR |
Active |
|
1000 |
VFQFPN 32 5x5x1.0 |
Tape And Reel |
|
|
| PM6680A |
Active |
|
1000 |
VFQFPN 32 5x5x1.0 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| PM6680A : DS4929: Dual synchronous step-down controller with adjustable output voltages plus LDO |
2 |
1933KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2559: System power supply board for digital solutions |
1 |
967KB |
| AN2565: PM6680A evaluation kit dual step-down controller with auxiliary voltages |
2 |
1091KB |
FLYERS
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-ISA053V2 |
Demonstration board for the PM6680A dual synchronous step-down controller with adjustable output voltages plus LDO |
| STEVAL-PSQ001V1 |
Power management for CPU, FPGA and memory based on the PM6680A |
