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 1V 1.5A PPAK
- 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)：1V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.2V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：4 mA
- Current - Supply (Max)：6 mA
- PSRR：68dB (120Hz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-25°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
Download product information
Overview
The LD49150PT10R is a fixed-output linear regulator providing 1.0 V at 1.5 A in a PPAK package. It operates with a main input voltage of 1.4 V to 5.5 V and a bias supply of 3 V to 6 V. The device features a maximum dropout voltage of 200 mV at full load, ±1.5% initial output tolerance, and fast transient response up to 10 MHz bandwidth. Protection includes thermal shutdown and current limit. Junction temperature range is -25 °C to 125 °C.
Feature Summary
- Dual-supply architecture with separate VIN and VBIAS inputs for ultra-low dropout performance
- High-bandwidth design supporting fast transient response up to 10 MHz
- Logic-controlled enable pin for power sequencing and shutdown management
- Integrated thermal shutdown and current limit protection
Applications
- Microprocessor core voltage supply
- Graphics processors
- PC add-in cards
- Low voltage digital ICs
- SMPS post regulators
Procurement Notes
Verify the specific suffix PT10R confirms the 1.0 V fixed output and PPAK packaging configuration. Confirm component status as production data or end-of-life depending on current availability requirements. Ensure environmental compliance matches project specifications before finalizing procurement orders.
Selection Notes
Select this part when low dropout voltage is critical under high load conditions. The dual-supply requirement necessitates an available bias rail between 3 V and 6 V. Verify that the application can accommodate the minimum 1 µF ceramic output capacitor for stability. Consider thermal dissipation limits based on PCB copper area if ambient temperatures are high.
Part Context
This component belongs to the LD49150 family of 1.5 A ultra low-dropout voltage regulators from STMicroelectronics. The family offers various fixed and adjustable output voltages. The PT10R variant specifically provides a fixed 1.0 V output in the PPAK surface-mount package designed for efficient thermal management via PCB ground planes.
Replacement Considerations
LD49150PT12R (1.2 V fixed output)
FAQ
What is the minimum required capacitance for stable operation?
A minimum of 1 µF ceramic chip capacitor is required on the output to maintain regulator stability.
How does the dual-supply configuration benefit performance?
Separate VIN and VBIAS inputs allow the main supply to operate very close to the output voltage, achieving ultra-low dropout while maintaining fast transient response.
