LMR34215-Q1 Texas instruments

LMR34215-Q1

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LMR34215-Q1

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Описание

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.

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

Vin (min) (V)	3.6
Vin (max) (V)	42
Vout (min) (V)	3.3
Vout (max) (V)	40
Iout (max) (A)	1.5
Iq (typ) (mA)	0.025
Switching frequency (min) (kHz)	400
Switching frequency (max) (kHz)	2100
EMI features	Low parasitic Hotrod packaging, Spread Spectrum
Features	Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Synchronous Rectification
Operating temperature range (°C)	-40 to 125
Rating	Automotive
TI functional safety category	Functional Safety-Capable
Regulated outputs (#)	1
Control mode	current mode
Duty cycle (max) (%)	99
Type	Converter