LM2623QNHLTQ1屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器。由美國德州儀器公司制造生產(chǎn)的LM2623QNHLTQ1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。

1 Features

1? AEC-Q100 Qualified for Automotive Applications:

– Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature

– Device HBM ESD Classification Level 2

– Device CDM ESD Classification Level C4A

? Good Efficiency Over a Very Wide Load Range

? Very Low Output Voltage Ripple

? Up to 2-MHz Switching Frequency

? 0.9-V to 14-V Operating Voltage

? 1.1-V Start-Up Voltage

? 1.24-V to 14-V Adjustable Output Voltage

? 0.17-Ω Internal MOSFET

? Up to 90% Regulator Efficiency

? 80-μA Typical Operating Current (Into VDD Pin of

Supply)

? Low Shutdown Current (IQ < 2.5 μA)

? 4-mm × 4-mm Thermally Enhanced WSON

Package Option

2 Applications

? Automotive Camera

? Automotive Radar

? Automotive GPS

? Flash Memory Programming

? White-LED Drive

3 Description

The LM2623-Q1 is a high-efficiency, generalpurpose,

step-up DC-DC switching regulator for

automotive systems. The device accepts an input

voltage between 0.9 V and 14 V and converts it into a

regulated output voltage between 1.24 V and 14 V.

In order to adapt to a number of applications, the

LM2623-Q1 allows the designer to program the

output voltage, the operating frequency (300 kHz to

2 MHz), and duty cycle (17% to 90%) to optimize

performance. The selected values can be fixed or can

vary with input voltage or input-to-output voltage ratio.

The LM2623-Q1 uses a very simple, on/off regulation

mode to produce good efficiency and stable operation

over a wide operating range. The device normally

regulates by skipping switching cycles when it

reaches the regulation limit (pulse frequency

modulation (PFM)).

Refer to Non-Linear Effect and Choosing the Correct

C3 Capacitor to resolve any design challenges before

board design is finalized.