The ADP1879ACPZ-0.3-R7 is the power saving mode (PSM) version of thedevice and is capable of pulse skipping to maintain outputregulation while achieving improved system efficiency at lightloads (see the ADP1879ACPZ-0.3-R7 Power Saving Mode (PSM) section formore information).
Available in three frequency options (300 kHz, 600 kHz, and1.0 MHz, plus the PSM option), the ADP1878/ADP1879ACPZ-0.3-R7 are wellsuited for a wide range of applications that require a single-inputpower supply range from 2.95 V to 20 V. Low voltage biasing issupplied via a 5 V internal low dropout regulator (LDO).
In addition, soft start, programmability is included to limitinput in-rush current from the input supply during startup andto provide reverse current protection during precharged outputconditions. The low-side current sense, current gain scheme andintegration of a boost diode, along with the PSM/forced pulsewidthmodulation (PWM) option, reduce the external part countand improve efficiency.
The ADP1878/ADP1879ACPZ-0.3-R7 operate over the −40°C to +125°Cjunction temperature range and are available in a 14-LeadLFCSP_WD package.
Feature
- Power input voltage range: 2.95 V to 20 V
- On-board bias regulator
- Minimum output voltage: 0.6 V
- 0.6 V reference voltage with ±1.0% accuracy
- Supports all N-channel MOSFET power stages
- Available in 300 kHz, 600 kHz, and 1.0 MHz options
- No current-sense resistor required
- Power saving mode (PSM) for light loads (ADP1879 only)
- Resistor programmable current limit
- Power good with internal pull-up resistor
- Externally programmable soft-start
- See data sheet for additional features
Applications
- Telecom and networking systems
- Mid to high-end servers
- Set-top boxes
- DSP core power supplies
(Picture: Pinout)
