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TI LM5122MHE/NOPBRoHS

Manufacturer
TI
MPN
LM5122MHE/NOPB
LCSC Part #
C544455
Packaging
HTSSOP-20-EP
Customer #
Key Attributes
Wide-input synchronous boost controller with polyphase function
Datasheetpdf iconTI LM5122MHE/NOPB
In-Stock: 51
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QtyUnit PriceTotal Amount
1+$ 3.1463$ 3.15
10+$ 2.6904$ 26.90
30+$ 2.4194$ 72.58
250+$ 2.1436$ 535.90
500+$ 2.017$ 1008.50
1,000+$ 1.9602$ 1960.20
Standard Packaging250/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-20-EP
Synchronous RectifierYes
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Frequency synchronization;Light load efficient mode;Overcurrent Protection
Number of Channels1
TopologyBoost
Operating Voltage4.5V~65V
Switch tube (built-in/external)External
Output Voltage-
Operating Temperature-40℃~+125℃@(TJ)
Output Current3A
Frequency - Switching450kHz;875kHz
Output TypeAdjustable
FunctionBoost
Quiescent Current4mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging250
Sales UnitPiece

Introduction

AI Translation

LM5122 is a multiphase-capable synchronous boost controller designed for high-efficiency synchronous boost regulator applications. The control method is based on peak current mode control, which provides inherent line feedforward, cycle-by-cycle current limiting, and simplified loop compensation. Switching frequency is programmable up to 1MHz. Higher efficiency is achieved through two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode emulation mode supports discontinuous mode operation, improving efficiency under light-load conditions. An internal charge pump enables 100% duty cycle (bypass operation) for the high-side synchronous switch. A 180° phase-shifted clock output enables simple multiphase interleaved configurations. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limiting, and adjustable line undervoltage lockout.

Features

AI Translation
  • Maximum input voltage: 65V, minimum input voltage: 3V (4.5V at startup)
  • Output voltage up to 100V
  • Bypass (VOUT = VIN) operation, 1.2V reference voltage with ±1% accuracy
  • Free-running and synchronous switching frequency up to 1MHz
  • Peak current mode control, robust 3A integrated gate driver
  • Adaptive dead-time control
  • Optional diode emulation mode, programmable cycle-by-cycle current limit
  • Hiccup mode overload protection
  • Programmable line UVLO
  • Programmable soft-start
  • Thermal shutdown protection
  • Low shutdown quiescent current: 9μA
  • Programmable slope compensation
  • Programmable skip-cycle mode for reduced standby power, supports external VCC supply
  • Inductor DCR current sensing
  • Multiphase capability, thermally enhanced 20- or 24-pin HTSSOP
  • Create custom designs using LM5122 with WEBENCH Power Designer

Applications

AI Translation
  • 12V, 24V, and 48V power supply systems
  • Automotive start-stop
  • Audio power supply
  • High-current boost power supply