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.
Key Features
- 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
Product Specifications
Brochures
Sample & Buy
| Part Number | Package | Packing Type | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| PM6644TR | VDFPN 10 3x3x1.0 | Tape And Reel | 0.795 | 1000 | NEC | EAR99 | PHILIPPINES |
Quality & Reliability
