BD3551HFN-TL

更新时间： 2024-01-09 05:52:18

品牌	Logo	应用领域
罗姆 - ROHM		外围驱动器稳压器驱动程序和接口接口集成电路光电二极管 PC
页数	文件大小	规格书
17页	655K
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数据手册

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BD3551HFN-TL 数据手册

TECHNICAL NOTE

High-performance Regulator IC Series for PCs

Ultra Low Dropout

Linear Regulators for PC

BD3550HFN, BD3551HFN, BD3552HFN

(0.5～2.0A)

● Description

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=100mΩ <BD3552HFN>) level. By

lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=2.0A <BD3552HFN>) with

reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier

diode. Thus, BD3550HFN,BD3551HFN,BD3552HFN 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.

● Features

1) Internal high-precision reference voltage circuit(0.65V±1%)

2) Built-in VCC undervoltage lockout circuit

3) NRCS (soft start) function reduces the magnitude of in-rush current

4) Internal Nch MOSFET driver offers low ON resistance (100mΩ <BD3552HFN typ>)

5) Built-in current limit circuit

6) Built-in thermal shutdown (TSD) circuit

7) Variable output (0.65～2.7V)

8) Small package HSON8 : 2.9×3×0.6(mm)

9) Tracking function

● Applications

Notebook computers, Desktop computers, LCD-TV, DVD, Digital appliances

● Line-up

It is available to select power supply voltage and maximum output voltage.

Maximum Output Voltage

Package

HSON8

Vcc=5V

0.5A

1.0A

2.0A

BD3550HFN

BD3551HFN

BD3552HFN

Oct. 2008

12 3 4 5 6 7...17

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