ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1A 8-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.16V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：155 µA
- Current - Supply (Max)：-
- PSRR：70dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable, Soft Start
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-XFDFN Exposed Pad
- Supplier Device Package：8-DFN (1.6x1.2)
- Grade：-
- Qualification：-
Download product information
Overview
The LD56100DPU33R is a high-accuracy linear voltage regulator from STMicroelectronics, providing a fixed 3.3 V output with a maximum current of 1 A. It operates within an input voltage range of 1.8 V to 5.5 V and features a typical dropout voltage of 120 mV at full load. The device incorporates ultra-low noise characteristics (13 µV RMS) and high power supply rejection ratio (70 dB at 1 kHz). It includes logic-controlled shutdown with standby current below 0.1 µA, internal soft-start, and optional output discharge. Packaged in a compact DFN8 (1.2 x 1.6 mm) format, it supports operation from -40 °C to +125 °C.
Feature Summary
- Ultra-low dropout voltage enabling efficient power conversion under varying load conditions
- Integrated electronic shutdown and soft-start for controlled power management
- High precision output voltage stability across wide temperature ranges
- Built-in short-circuit protection with foldback current limiting
Applications
- Mobile phones
- Tablets
- Battery-powered systems
- Camera supply
Procurement Notes
Verify the specific ordering code against official STMicroelectronics documentation to ensure correct output voltage and feature configuration. Confirm package type and environmental compliance requirements prior to procurement. Cross-reference datasheet revision history for any updates to electrical characteristics or pin configurations.
Selection Notes
Select this component for applications requiring low noise and fast transient response in space-constrained designs. Ensure input voltage remains within the specified 1.8 V to 5.5 V range. Verify thermal dissipation capabilities given the small DFN8 package size. Consider the optional output discharge feature if rapid power-down is required.
Part Context
The LD56100 series belongs to STMicroelectronics' portfolio of very low dropout linear regulators designed for battery-operated devices. It offers high accuracy and ultra-low noise performance suitable for sensitive analog circuits. The DFN8 package provides significant space savings compared to traditional surface-mount packages.
Replacement Considerations
LD56100DPU18R
FAQ
What is the function of the LCON pin?
The LCON pin selects the output current limit. Connecting it to VIN sets the limit to 1 A, while connecting it to GND reduces the limit to 0.5 A.
Does the LD56100DPU33R include an output discharge feature?
Yes, the 'DPU' suffix indicates that the device includes an optional output voltage discharge MOSFET activated when the EN pin is low.
