0
ACTIVE
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
6 |
Vin (max) (V) |
36 |
Vin (min) (V) |
3 |
Vout (max) (V) |
34.2 |
Vout (min) (V) |
1 |
Features |
Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package |
EMI features |
Spread Spectrum |
Control mode |
current mode |
Operating temperature range (°C) |
-40 to 150 |
Iq (typ) (A) |
0.000005 |
Duty cycle (max) (%) |
98 |
TI functional safety category |
Functional Safety-Capable |
VQFN-HR (RPH)-16-15.75 mm² 4.5 x 3.5
The LM6x4xx family of buck regulators are regulators that provide either fixed or adjustable output voltage that can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range or 3 V to 36 V and have transient tolerance up to 42 V.
The family is designed for low EMI. The devices incorporate pin-selectable spread spectrum and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±5.5% (typical), drastically reducing peak emissions through a combination of triangular and pseudo random modulation. DRSS also includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.
An open-drain RESET output with filtering and delayed release gives a true indication of system status. In auto mode, the device automatically transitions between fixed-frequency pulse width modulation (FPWM) and pulse frequency modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.
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