ISL85413

Features

Wide input voltage range of 3.5V to 40V
Synchronous operation for high efficiency
No compensation required
Integrated high-side and low-side NMOS devices
Selectable PFM or forced PWM mode at light loads
Internal switching frequency 700kHz
Continuous output current up to 300mA
Internal soft-start
Minimal external components required
Power-good and enable functions available

Find Other Products in Buck Regulators (Integrated FETs)

Description

The ISL85413 is a 300mA synchronous buck regulator with an input range of 3.5V to 40V. It provides an easy-to-use, high-efficiency low BOM count solution for a variety of applications. The ISL85413 integrates both high-side and low-side NMOS FETs and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 700kHz. By integrating both NMOS devices and providing internal configuration, minimal external components are required, reducing BOM count and complexity of design. With the wide V_IN range and reduced BOM, the part offers an easy-to-implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high-voltage industrial applications as well as an efficient solution for battery-powered applications. The part is available in a small Pb-free 3mm x 3mm TDFN plastic package with an operation junction temperature range of -40°C to +125°C.

Parameters

Attributes	Value
Topology [Rail 1]	Buck
Outputs (#)	1
Input Voltage (Min) [Rail 1] (V)	3.5
Input Voltage (Max) [Rail 1]	40
Output Voltage (Min) [Rail 1] (V)	0.6
Output Voltage (Max) [Rail 1] (V)	34
Output Current (Max) [Rail 1] (A)	0.3
Switching Frequency Range (Typical) (kHz)	600 - 784
Control Type	Current Mode
Peak Efficiency (%)	92
IQ [Rail 1] (µA)	50
SYNCH Capability	No
Qualification Level	Standard
Temp. Range (°C)	-40 to +125°C
Simulation Model Available	N/A

Package Options

Pkg. Type	Pkg. Dimensions (mm)	Lead Count (#)	Pitch (mm)
TDFN	3.0 x 3.0 x 0.75	8	0.5

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