LMR34215-Q1

Name: LMR34215-Q1
Brand: TI
SKU: LMR34215-Q1
Price: 1.11 USD

現行

4.2V 至 42V、1.5A、超小型同步降壓轉換器

立即訂購

產品規格表

document-pdfAcrobat LMR34215-Q1 4.2-V to 42-V, 1.5-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. B) (英文) PDF | HTML

現在提供此產品的更新版本

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比較替代產品

功能相同，但引腳輸出與所比較的裝置不同

LMR43620-Q1

現行

具有低 IQ 的車用 3-V 至 36-V、2-A、低 EMI 同步降壓穩壓器 Smaller footprint, higher efficiency, lower EMI, lower IQ and spread-spectrum.

LMR34215-Q1

現行

產品規格表

立即訂購

產品詳細資料

Rating

Automotive

Topology

Buck

Iout (max) (A)

1.5

Vin (max) (V)

42

Vin (min) (V)

3.6

Vout (max) (V)

40

Vout (min) (V)

3.3

Features

Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Power good, Synchronous rectification

EMI features

Low parasitic Hotrod packaging, Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000025

Duty cycle (max) (%)

99

TI functional safety category

Functional Safety-Capable

Rating

Automotive

Topology

Buck

Iout (max) (A)

1.5

Vin (max) (V)

42

Vin (min) (V)

3.6

Vout (max) (V)

40

Vout (min) (V)

3.3

Features

Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Power good, Synchronous rectification

EMI features

Low parasitic Hotrod packaging, Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000025

Duty cycle (max) (%)

99

TI functional safety category

Functional Safety-Capable

VQFN-HR (RNX)

12

6 mm² 3 x 2

AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Designed for automotive applications
- Junction temperature range –40°C to +150°C
- 0.4-V dropout with 1.5-A load (typical)
- ±1.5% reference voltage tolerance
- 5-V fixed-output, adjustable output voltage options
Suited for scalable power supplies
- Pin compatible with:
  - LMR36015-Q1, LMR36006-Q1 (60 V, 0.6 A, or 1.5 A)
  - LMR33630-Q1, LMR33620-Q1 (36 V, 2 A, or 3 A)
- 400-kHz, 2.1-MHz frequency options
Integration reduces solution size and cost
- Small, 2-mm × 3-mm VQFN package with wettable flanks
- Few external components
Low power dissipation across load spectrum
- 93% efficiency at 400 kHz (12 V_IN, 5 V_OUT, 1 A)
- Increased light load efficiency in PFM
- Low operating quiescent current of 24 µA
Optmized for ultra low EMI requirements
- Meets CISPR25 class 5 standard
- Hotrod™ package minimizes switch node ringing
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions

AEC-Q100-qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Designed for automotive applications
- Junction temperature range –40°C to +150°C
- 0.4-V dropout with 1.5-A load (typical)
- ±1.5% reference voltage tolerance
- 5-V fixed-output, adjustable output voltage options
Suited for scalable power supplies
- Pin compatible with:
  - LMR36015-Q1, LMR36006-Q1 (60 V, 0.6 A, or 1.5 A)
  - LMR33630-Q1, LMR33620-Q1 (36 V, 2 A, or 3 A)
- 400-kHz, 2.1-MHz frequency options
Integration reduces solution size and cost
- Small, 2-mm × 3-mm VQFN package with wettable flanks
- Few external components
Low power dissipation across load spectrum
- 93% efficiency at 400 kHz (12 V_IN, 5 V_OUT, 1 A)
- Increased light load efficiency in PFM
- Low operating quiescent current of 24 µA
Optmized for ultra low EMI requirements
- Meets CISPR25 class 5 standard
- Hotrod™ package minimizes switch node ringing
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions

The LMR34215-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, output current is delivered over a wide input voltage range of 4.2 V to 42 V.

The LMR34215-Q1 uses peak-current-mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status eliminating the requirement for an external supervisor.

The LMR34215-Q1 regulator is an easy-to-use, synchronous, step-down DC/DC converter. With integrated high-side and low-side power MOSFETs, output current is delivered over a wide input voltage range of 4.2 V to 42 V.

The LMR34215-Q1 uses peak-current-mode control to provide optimal efficiency and output voltage accuracy. Precision enable gives flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status eliminating the requirement for an external supervisor.

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重要文件	類型	標題	格式選項	日期
*	Data sheet	LMR34215-Q1 4.2-V to 42-V, 1.5-A Ultra-Small Synchronous Step-Down Converter datasheet (Rev. B)	PDF \| HTML	2020年 11月 19日
	Selection guide	Buck Converter Quick Reference Guide (Rev. B)		2021年 4月 8日
	Functional safety information	LMR34215-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	2021年 1月 6日
	Technical article	Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev		2020年 11月 18日
	Technical article	Optimizing flip-chip IC thermal performance in automotive designs	PDF \| HTML	2019年 12月 11日
	Design guide	Automotive ADAS camera power supply reference design (Rev. A)		2019年 8月 22日

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開發板

LMR34215FSC5EVM — 42-V、1.5-A 同步降壓轉換器評估模組

LMR34215FSC5EVM 評估模組 (EVM) 可協助設計人員評估 LMR34215-Q1 廣泛輸入降壓穩壓器的運作及性能。LMR34215-Q1 是一款簡單易用的同步降壓 DC/DC 轉換器，可從最高 42V 的輸入電壓驅動高達 1.5A 的負載電流。LMR34215-Q1 在非常小的解決方案尺寸中，提供了卓越的效率和準確性。LMR34215FSC5EVM 具備 LMR34215-Q1，提供固定 5V 輸出電壓與 2.1MHz 切換頻率。

使用指南: PDF