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TI LM27402MHX/NOPB product image
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TI LM27402MHX/NOPBRoHS

Manufacturer
TI
MPN
LM27402MHX/NOPB
LCSC Part #
C2658435
Packaging
HTSSOP-16-EP
Customer #
Key Attributes
1 600mV~19V Adjustable Step-down type HTSSOP-16-EP DC DC Switching Controllers RoHS
Datasheetpdf iconTI LM27402MHX/NOPB
In-Stock: 50
50 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 2.7575$ 2.76
10+$ 2.3204$ 23.20
30+$ 1.938$ 58.14
100+$ 1.6584$ 165.84
500+$ 1.5314$ 765.70
1,000+$ 1.4768$ 1476.80
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerTI
PackagingHTSSOP-16-EP
Synchronous RectifierYes
FeaturesOvercurrent Protection;Adjustable current limiting;Adjustable soft-start;Frequency synchronization;Output voltage tracking;Operating status indication;Built-in LDO regulator
Number of Channels1
TopologyBuck
Operating Voltage3V~20V
Switch tube (built-in/external)External
Output Voltage600mV~19V
Operating Temperature-40℃~+125℃@(TJ)
Output Current-
Frequency - Switching1.2MHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current4.5mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

LM27402 is a voltage-mode synchronous DC/DC buck controller with lossless inductor DCR current sensing. Sensing inductor current requires no additional resistive power delivery components, improving overall efficiency while enabling continuous precision current sensing. The 0.6V ±1% voltage reference ensures high accuracy and low-voltage capability at the output.

The LM27402 operates over an input voltage range of 3V to 20V, making it compatible with a wide variety of input power rails.

The LM27402 voltage-mode control loop incorporates input voltage feedforward to maintain stability across the entire input voltage range. Switching frequency is adjustable from 200kHz to 1.2MHz. Dual high-current integrated MOSFET drivers support large-Qg, low-RDS(on) power MOSFETs. A power-good indicator provides power rail sequencing capability and output fault detection. Adjustable external soft-start limits inrush current and provides monotonic output control during startup. Additional features include external tracking of other power supplies, an integrated LDO bias supply, and a synchronization function.

Features

AI Translation
  • Wide input voltage range: 3V to 20V
  • Overcurrent protection based on inductor DCR or shunt resistor
  • 0.6V reference voltage with ±1% FB accuracy over full junction temperature range of -40°C to 125°C
  • Switching frequency: 200kHz to 1.2MHz
  • Output voltage up to 95% of input voltage
  • Integrated high-current MOSFET driver
  • Internal VDD bias supply LDO sub-regulator
  • External clock synchronization
  • Adjustable soft-start via external capacitor
  • Pre-bias startup capability
  • Power tracking
  • Voltage mode control with line feedforward
  • Open-drain power-good indicator
  • Precision enable with hysteresis
  • 16-pin HTSSOP and WQFN packages

Applications

AI Translation
  • High-current, low-voltage power supply for FPGA and ASIC
  • General-purpose high-current buck converter
  • DC/DC converter and POL module
  • Telecom, datacom, networking, distributed power architecture
  • Cryptocurrency mining machines (Bitcoin, Ethereum, Litecoin)