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LM2735
SNVS485I – JUNE 2007 – REV...
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LM2735
SNVS485I – JUNE 2007 – REVISED SEPTEMBER 2018
LM2735 520-kHz and 1.6-MHz Space-Efficient Boost and SEPIC DC/DC Regulator
1 Features
1 Input
Voltage Range: 2.7 V to 5.5 V Output
Voltage Range: 3 V to 24 V 2.1-A Switch Current Over Full Temperature
Range Current-Mode Control Logic High Enable Pin Ultra-Low Standby Current of 80 nA in Shutdown 170-mΩ NMOS Switch ±2% Feedback
Voltage Accuracy Ease-of-Use, Small Total Solution Size
– Internal Soft Start – Internal Compensation – Two Switching Frequencies – 520 kHz (LM2735-Y) – 1.6 MHz (LM2735-X) – Uses Small Surface Mount Inductors and Chip
Capacitors – Tiny SOT-23, WSON, and MSOP-
PowerPAD™ Packages Create a Custom Design Using the LM2735 With
WEBENCH® Power Designer
2 Applications
LCD Display Backlighting For Portable Applications
OLED Panel Power Supply USB-Powered Devices Digital Still and Video Cameras White LED Current Source For Automotive see LM2735-Q1
space Typical Boost Application Circuit
VIN 2.7V-5.5V
L1
D1
12V
3 Description
The LM2735 device is an easy-to-use, space-efficient 2.1-A low-side switch regulator, ideal for Boost and SEPIC DC/DC regulation. The device provides all the active functions to provide local DC-DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to either 520 kHz or 1.6 MHz, allowing the ...