具有低 Iq 的 SIMPLE SWITCHER?、4V 至 40V、600mA 降壓轉(zhuǎn)換器
Vin (Min) (V)
4
Vin (Max) (V)
40
Vout (Min) (V)
0.8
Vout (Max) (V)
30
Iout (Max) (A)
0.6
Iq (Typ) (uA)
28
Switching frequency (Min) (kHz)
1100
Switching frequency (Max) (kHz)
2100
Features
Enable, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, UVLO Adjustable, Soft Start Fixed
Rating
Catalog
Regulated outputs (#)
1
Control mode
Current Mode
Duty cycle (Max) (%)
97
Ultra Low 28 μA Standby Current in Sleep Mode
Input Voltage Range 4 V to 40 V
1 μA Shutdown Current
High Duty Cycle Operation Supported
Output Current up to 600 mA
1.1 MHz and 2.1 MHz Switching Frequency
Internal Compensation
High Voltage Enable Input
Internal Soft Start
Over Current Protection
Over Temperature Protection
Small Overall Solution Size (TSOT-6L Package)
The LMR14006 is a PWM DC/DC buck (step-down) regulator. With a wide input range of 4 V-40 V, it is suitable for a wide range of application from industrial to automotive for power conditioning from an unregulated source. The regulator’s standby current is 28 μA in sleep mode, which is suitable for battery operating systems. An ultra low 1 μA current can further prolong battery life in shutdown mode. Operating frequency is fixed at 1.1 MHz (X version) and 2.1 MHz (Y version) allowing the use of small external components while still being able to have low output ripple voltage. Soft-start and compensation circuits are implemented internally, and these allow the device to be used with minimized external components. The LMR14006 is optimized for up to 600 mA load current which has a 0.765 V typical 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 LMR14006 is available in a low profile TSOT-6L package.