STMicroelectronics PM6644
The PM6644 is a 350 mA valley current limit stepdown regulator capable of delivering an adjustable output voltage in the range between 0.9 V and 8 V. 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.| Part No. | PM6644 |
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| Datasheet | PM6644 Download |
| Manufacturer |  STMicroelectronics |
| Description | 350mA adjustable step-down regulator |
| Buy | Stock & Price |
FEATURES
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● 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 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 setup. DFN10
APPLICATIONS
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● Networking power supply Portable applications Microcontroller supply Industrial supply
DESCRIPTION
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 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 Table 1. Device summary Part number PM6644 PM6644TR Package DFN10 DFN10 Packing Tube Tape and reel June 2012 This is information on a product in full production.
