Overview

The flexible step-down switching regulator controller is a switching regulator controller designed with a high-withstand-voltage built-in POWER MOS FET, providing a free setting function of operating frequency with external resistor. This switching regulator controller features a wide input voltage range (7 V to 35 V or 7 V to 48 V) and operating temperature range (-40?C to +125?C or

-40?C to +95?C). Furthermore, an external synchronization input pin (BD9781HFP) enables synchronous operation with external clock.

Features

1) Minimal external components

2) Wide input voltage range: 7 V to 35 V (BD9778F/HFP and BD9781HFP), 7 V to 48 V (BD9001F)

3) Built-in P-ch POWER MOS FET

4) Output voltage setting enabled with external resistor: 1 to VIN

5) Reference voltage accuracy: ±2

6) Wide operating temperature range: -40?C to +125?C (BD9778F/HFP and BD9781HFP),

-40?C to +95?C (BD9001F)

8) Low dropout: 100 ON Duty cycle

9) Standby mode supply current: 0 μA (Typ.) (BD9778F/HFP and BD9781HFP), 4 μA (Typ.) (BD9001F)

10) Oscillation frequency variable with external resistor: 50 to 300 kHz (BD9001F), 50 to 500 kHz (BD9778F/HFP and BD9781HFP)

11)External synchronization enabled (only on the BD9781HFP)

12)Soft start function : soft start time fixed to 5 ms (Typ.))

13)Built-in overcurrent protection circuit

14)Built-in thermal shutdown protection circuit

15)High power HRP7 package mounted (BD9778HFP and BD9781HFP)

Compact SOP8 package mounted (BD9778F and BD9001F)

BD9001F屬于集成電路（IC） > 穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器。羅姆半導(dǎo)體集團制造生產(chǎn)的BD9001F穩(wěn)壓器 - DC-DC 開關(guān)穩(wěn)壓器DC-DC 開關(guān)穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設(shè)備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應(yīng)用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關(guān)元件，設(shè)備提供的電力會通過該元件。