The BD3550HFN / BD3551HFN / BD3552HFN ultra low-dropout linear chipset regulator operates from a very low input supply, and offers ideal performance in low input voltage to low output voltage applications. It incorporates a built-in N-MOSFET power transistor to minimize the input-to-output voltage differential to the ON resistance (RON=400mO / 200mO / 100mO) level. By lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=0.5A / 1.0A / 2.0A) with reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier diode. Thus, the BD355XHFN is designed to enable significant package profile downsizing and cost reduction. An external resistor allows the entire range of output voltage configurations between 0.65 and 2.7V, while the NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to whatever power supply sequence is required.
The BD3550HFN / BD3551HFN / BD3552HFN ultra low-dropout linear chipset regulator operates from a very low input supply, and offers ideal performance in low input voltage to low output voltage applications. It incorporates a built-in N-MOSFET power transistor to minimize the input-to-output voltage differential to the ON resistance (RON=400mO / 200mO / 100mO) level. By lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=0.5A / 1.0A / 2.0A) with reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier diode. Thus, the BD355XHFN is designed to enable significant package profile downsizing and cost reduction. An external resistor allows the entire range of output voltage configurations between 0.65 and 2.7V, while the NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to whatever power supply sequence is required.
IC REG LDO ADJ 1A 8-HSON Product overview: BD3551HFN from ROHM Semiconductor is a LDO Voltage Regulator IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include LDO, 1A. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, 1A, LDO Voltage Regulator IC, Linear Voltage Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 699-BD3551HFN can be used for catalog matching and distributor lookup.
Manufacturer: Rohm Semiconductor
Win Source Part Number: 049305-BD3551HFN
Packaging: Reel - TR
Mounting: SMD (SMT)
Regulator Topology: Positive Adjustable
Voltage - Dropout (Typical): 0.2V @ 1A
Number of Regulators: 1
Output Type: Adjustable
Control Features: Enable, Soft Start
Output Current: 1A
Output Voltage: 0.65 V to 2.7 V
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -10°C to 100°C
Case / Package: 8-HSON
Maximum Input Voltage: 4.5V
Nominal Output Voltage (Min/Fixed): 0.65V
Dropout Voltage-Max: 0.3V @ 1A
Operating Supply Current: 0.5mA to 1mA
Maximum Output Voltage: 2.7V
Protection Features: Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Popularity: Medium
Fake Threat In the Open Market: 58 pct.
Supply and Demand Status: Balance
| ROHM Semiconductor USA, LLC | ROHM Semiconductor GmbH | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | |
|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Voltage Regulators | IC Voltage Regulators | IC Linear Voltage Regulators |
| Product Number | BD3551HFN | BD3551HFN | 699-BD3551HFN | 049305-BD3551HFN |
| Product Name | 4.3-5.5V 1A 1ch LDO | 1A Variable Output, High-Accuracy LDO Regulator | 1A LDO Voltage Regulator IC | PMIC - PMIC - Voltage Regulators - Linear - BD3551HFN |
| Regulator Type | Low Dropout | Low Dropout | ||
| Package Type | Other; HSON8 | Other; HSON8 | Other; Reel - TR | Other; 8-HSON |
| Output Voltage | 0.6500 to 2.7 volts | 0.6500 to 2.7 volts | 0.6500 to 2.7 volts | 0.6500 volts |
| IOUT | 1 amps | 1 amps | 1 amps | 1 amps |
| VIN | 4.3 to 5.5 volts | 4.5 volts |
