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LP2985IM5-3.3 Datasheet(PDF) 15 Page - Texas Instruments

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Part # LP2985IM5-3.3
Description  LP2985-N 150-mA, Low-Noise, Low-Power, Ultra-Low-Dropout Regulator in a SOT-23 Package
PDF  43 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP2985IM5-3.3 Datasheet(HTML) 15 Page - Texas Instruments

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7 Detailed Description
7.1 Overview
The LP2985-N is a fixed-output, low-noise, high PSRR, low-dropout regulator that offers exceptional, cost-
effective performance for both portable and nonportable applications. The LP2985-N has an output tolerance
of 1% across line, load, and temperature variation (for the new chip) and is capable of delivering 150 mA of
continuous load current.
This device features integrated overcurrent protection, thermal shutdown, output enable, and internal output
pulldown and has a built-in soft-start mechanism for controlled inrush current. This device delivers excellent
line and load transient performance. The operating ambient temperature range of the device is from –40°C to
+125°C.
7.2 Functional Block Diagrams
Figure 7-1. Block Diagram for Legacy Chip
Bandgap
Reference
VREF = 1.2 V
VIN
VOUT
GND
Internal
Controller
UVLO
Current
Limit
Thermal
Shutdown
ON/OFF
GND
Output
Pull-down
GND
BYPASS
GND
Figure 7-2. Block Diagram for New Chip
www.ti.com
LP2985-N
SNVS018Z – MARCH 2000 – REVISED MAY 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: LP2985-N



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