Mingjiada [Supply] LM27402SQ (TI) Synchronous Buck Controller With DCR Current Sensing
LM27402SQ is a voltage mode synchronous DC/DC buck controller with lossless inductor DCR current detection. Sensing inductor current without the need for additional resistive power transfer system components improves overall efficiency and helps to continuously perform accurate current sensing.
Package: WQFN-16
Type: Voltage Mode Synchronous Buck Controller
Overview: The LM27402SQ has an input operating voltage range of 3V to 20V and is suitable for use with a wide range of input supply rails. The LM27402SQ voltage-mode control loop integrates input voltage feed-forward to provide stability across the entire input voltage range. The switching frequency is adjustable from 200kHz to 1.2MHz.
LM27402SQ Specifications:
Voltage - Supply (Vcc/Vdd): 3V ~ 20V
Frequency - Switching: 200kHz ~ 1.2MHz
Duty Cycle (Max): 95%
Operating Temperature: -40°C ~ 125°C (TJ)
Package/Case: 16-WQFN (4x4)
LM27402SQ Features:
Wide input voltage range of 3V to 20V
Overcurrent protection based on inductive DC resistance (DCR) or shunt resistor
0.6V reference with ±1% FB accuracy over the entire junction temperature range of -40°C to 125°C
200kHz to 1.2MHz switching frequency
Output voltage up to 95% of the input voltage 95%
Integrated high-current metal-oxide-semiconductor field-effect transistor (MOSFET) driver
Internal VDD-biased power supply low-dropout (LDO) subregulator
External clock synchronisation
Adjustable soft-start with external capacitors
Pre-bias start-up function
Power supply tracking
Voltage-mode control with line-feed-forward support
Open-drain power-normal indicator
Precision enable terminal with hysteresis function
LM27402SQ - Typical Application Circuit:
Mingjiada Electronics has been supplying TI [LM27402SQ] synchronous buck controllers for a long time, the device has lossless inductor DCR current sense function. For more product information about LM27402SQ, please contact Mingjiada Electronics:
QQ：1668527835
Tel：13410018555
E-mail：chen13410018555@163.com
