The LM26480 is a multi-functional power management unit (PMU), optimized for low-power digital applications. This device integrates two highly efficient 1.5-A step-down DC-DC converters and two 300-mA linear regulators. The DC-DC buck converters provide typical efficiencies of 96%, allowing for minimal power consumption. Features include soft start, undervoltage lockout, current overload protection, thermal overload protection, and an internal power-on-reset (POR) circuit, which monitors the output voltage levels on bucks 1 and 2.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LM26480 | WQFN (24) | 4.00 mm × 4.00 mm |
Changes from M Revision (December 2016) to N Revision
Changes from L Revision (June 2016) to M Revision
Changes from K Revision (January 2015) to L Revision
Changes from J Revision (October 2014) to K Revision
Changes from I Revision (May 2013) to J Revision
ORDER SUFFIX | SPEC | OSCILLATOR FREQUENCY | BUCK MODES | nPOR DELAY | UVLO | SYNC | AECQ |
---|---|---|---|---|---|---|---|
SQ-AA | NOPB | 2 MHz | Auto-Mode | 60 ms | Enabled | Disabled | No |
POWER BLOCK INPUT(1) | ENABLED | DISABLED | NOTE |
---|---|---|---|
VINLDO12 | VIN+ | VIN+ | Always powered |
AVDD | VIN+ | VIN+ | Always powered |
VIN1 | VIN+ | VIN+ or 0V | |
VIN2 | VIN+ | VIN+ or 0V | |
VINLDO1 | ≤ VIN+ | ≤ VIN+ | If enabled, minimum VIN is 1.74 V |
VINLDO2 | ≤ VIN+ | ≤ VIN+ | If enabled, minimum VIN is 1.74 V |