L5988D 4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

The L5988D is a monolithic step down power switching regulator able to deliver a continuos output current of 4 A to the load in most of the application conditions limited only by the thermal performance . The device is able to deliver more than 5 A to the load for a maximum time which is dependent on the thermal impedance of the system and the specific operating conditions.

The input voltage can range from 2.9 V to 18 V. The device is capable of 100% duty cycle operation thanks to the embedded high side PMOS switch which doesn’t need external bootstrap capacitor to be driven.

The internal switching frequency is adjustable by external resistor and can be set continuously from 100 kHz to 1 MHz. The L5988D can also be synchronized to an external frequency signal driven to the SYNCH pin I/O pin

技术特性

4 A output current (more than 5 pulsed)
Operating input voltage from 2.9 V to 18 V
External 1.8 V ± 2 % reference voltage
Output voltage from 0.6 to input voltage
MLCC compatible
200 ns TON
Programmable UVLO matches 3.3 V, 5 V and 12 V bus
FSW programmable up to 1 MHz
Voltage feed-forward
Zero-load current operation
Programmable current limit on both switches
Programmable sink current capability
Pre-bias start up capability
Thermal shutdown

功能框图

L5988D 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
L5988DTR	Active		1000	HTSSOP16	Tape And Reel
L5988D	Active		1000	HTSSOP16	Tube

DATASHEET

描述	版本	大小
L5988D : 4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification	3	1859KB