NCP81148: Synchronous Buck Controller
with Auto Power Saving
Mode and Built-In LDO
NCP81148 is a dual synchronous buck controller that is optimized
for converting the battery voltage or adaptor voltage into multiple
power rails required in desktop and notebook system. NCP81148
consists of two buck switching controllers with fixed 5.0 V output on
channel 2, 3.3 V on channel 1 and two on−board LDOs with three
outputs: 5 V / 60 mA and 3.3 V or 12 V / 10 mA. NCP81148 supports
high efficiency, fast transient response and provides power good
signals. ON Semiconductor proprietary adaptive−ripple control
enables seamless transition from CCM to DCM, where converter runs
at reduced switching frequency with much higher efficiency at light
load. The part operates with supply voltage ranging from 5.5 V to
28 V.
Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCP81148MNTWG | Active | Pb-free
Halide free | QFN-28 | 485AR | 1 | Tape and Reel | 4000 | $0.76 |
Specifications
| Product | Topology | Phases | Control Mode | VCC Min (V) | VCC Max (V) | fSW Typ (kHz) | tres Typ (ns) |
|---|
| NCP81148MNTWG | Step-Down | 1 | Voltage Mode | 5.5 | 28 | 300, 400, 600 | |
