The LM26480-Q1 is an automotive-qualified 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-Q1 | WQFN (24) | 4.00 mm × 4.00 mm |
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Changes from B Revision (December 2016) to C Revision
Changes from A Revision (June 2016) to B Revision
Changes from * Revision (January 2016) to A Revision
ORDER SUFFIX | SPEC | OSCILLATOR FREQUENCY | BUCK MODES | nPOR DELAY | UVLO | SYNC | AECQ |
---|---|---|---|---|---|---|---|
QSQ-AA | NOPB | 2 MHz | Auto-Mode | 60 mS | Enabled | Disabled | Grade 1 |
QSQ-CF | NOPB | 2.1 MHz | Forced PWM | 60 mS | Disabled | Disabled | Grade 1 |
QSQ-8D | NOPB | 2.1 MHz | Forced PWM | 130 µS | Enabled | Disabled | Grade 1 |
POWER BLOCK INPUT | 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 |