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TI LM25117PMHX/NOPBRoHS

Manufacturer
TI
MPN
LM25117PMHX/NOPB
LCSC Part #
C2870667
Packaging
HTSSOP-20-EP
Customer #
Key Attributes
Synchronous Buck Controller with Analog Current Monitoring and Wide Input Range
Datasheetpdf iconTI LM25117PMHX/NOPB
In-Stock: 4,156
4,156 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 1.9727$ 1.97
10+$ 1.7988$ 17.99
30+$ 1.6883$ 50.65
100+$ 1.5778$ 157.78
500+$ 1.5258$ 762.90
1,000+$ 1.5047$ 1504.70
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-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
TopologyBuck
Operating Voltage4.5V~42V
Switch tube (built-in/external)External
Output Voltage-
Operating Temperature-40℃~+125℃@(TJ)
Output Current-
Frequency - Switching50kHz~750kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current4.8mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The LM25117 high-voltage switching controller integrates all the features necessary to implement highly efficient high-voltage step-down regulators operating over a wide input voltage range. This easy-to-use controller integrates high-side and low-side NMOS drivers. The regulator control method is based on peak current control mode with an emulated current ramp. Peak current mode control provides inherent input voltage feed-forward and cycle-by-cycle current limiting, while simplifying loop compensation. The use of an emulated control ramp reduces the noise susceptibility of the PWM circuit, facilitating reliable operation at the extremely small duty cycles required in high input voltage applications. The LM25117 features a user-programmable switching frequency of up to 750 kHz. The RT pin allows the switching frequency to be programmed via a resistor or synchronized to an external clock. Protection features include cycle-by-cycle and discontinuous mode current limiting, thermal shutdown, and a remote shutdown function activated by pulling the UVLO pin low. The UVLO input enables the regulator when the input voltage reaches a user-selected threshold, and provides very low quiescent shutdown current when pulled low. A unique analog telemetry feature provides average output current information, suitable for applications requiring current monitoring or current control. The device is available in SSOP-20EP and LLP24 packages with an exposed pad to facilitate heat dissipation.

Features

AI Translation
  • Emulated peak current mode control
  • 4.5V to 42V wide operating voltage range
  • Robust 3.3A peak gate drive
  • Adaptive dead time control for output drivers
  • Free-running or synchronizable clock up to 750 kHz
  • Optional diode emulation mode
  • Programmable output from 0.8V
  • 1.5% accuracy voltage reference
  • Analog current monitor
  • Programmable current limit
  • Hiccup mode overcurrent protection
  • Programmable soft-start and tracking
  • Programmable input UVLO
  • Programmable switchover to external bias supply
  • Thermal shutdown