The LMR14010A is a PWM DC-to-DC buck (step-down) regulator. With a wide input range from 4V to 40V, the device is deigned for a wide range of applications from industrial to automotive. An ultra-low 1µA shutdown current prolongs battery life. Operating frequency is fixed at 0.7MHz, allowing the use of small external components while minimizing output ripple voltage. Soft-start and compensation circuits are implemented internally, limiting the number of external components.
The LMR14010A is optimized for up to 1A load current. The device has a 0.765V nominal feedback voltage.
The device has built-in protection features such as pulse-by-pulse current limit, thermal sensing and shutdown due to excessive power dissipation. The LMR14010A is available in a low profile TSOT-6L package (2.9mm × 1.6mm × 0.85mm).
PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) |
---|---|---|
LMR14010A | DDC (SOT-23-THIN, 6) | 2.9mm × 2.8mm |
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
CB | 1 | I | SW FET gate bias voltage. Connect Cboot capacitor between CB and SW. |
FB | 3 | I | Feedback Pin. Set feedback voltage divider ratio with VOUT = VFB (1+(R1/R2)). |
GND | 2 | G | Ground connection. |
SHDN | 4 | I | Enable and disable input pin(high voltage tolerant). Internal pull-up current source. Pull below 1.25 V to disable. Float to enable. Adjust the input undervoltage lockout with two resistors. |
SW | 6 | O | Switch node. Connect to inductor, diode and Cboot capacitor. |
VIN | 5 | I | Power input voltage pin. Input for internal supply and drain node input for internal high-side MOSFET. |