PM6644 350 mA adjustable step-down regulator
The PM6644 is a 350 mA valley current limit step-down regulator capable of delivering an adjustable output voltage in the range between 0.9 V and 8 V. A fixed value of output voltage is also available (3.47 V), saving the external resistor divider. It is housed in a small DFN10 3x3 package. The switching regulator is based on COT (constant-on-time) architecture, that assures fast load transient response; the embedded voltage feed-forward provides nearly constant switching frequency operation. The pulse skipping technique increases efficiency at very light load. The switching frequency can be adjusted from 200 kHz to 600 kHz through a simple resistor. The switching regulator can be programmed to regulate a fixed value of 3.47 V or it can deliver an adjustable voltage, depending on the FB pin set-up
技术特性
- 4.5 V to 25 V input voltage range
- Output voltage VOUT: fixed 3.47 V or adjustable 0.9 V to 8 V
- 350 mA valley current limit
- Constant-on-time control
- Programmable switching frequency
- Pulse skipping mode (skip mode) at light loads
- Independent EN signals
- Latched OVP and UVP
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应用原理图
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PM6644 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 |
| PM6644TR |
Active |
|
1000 |
VDFPN 10 3x3x1.0 |
Tape And Reel |
|
PM6644TR |
| PM6644 |
Active |
|
1000 |
VDFPN 10 3x3x1.0 |
Tube |
|
PM6644 |
DATASHEET
| 描述 |
版本 |
大小 |
| PM6644 : DS9042: 350 mA adjustable step-down regulator |
1 |
3008KB |
