LM2623-Q1 Texas instruments

LM2623-Q1

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LM2623-Q1

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Описание

The LM2623-Q1 is a high-efficiency, general-purpose, 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.

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 V_DD Pin of Supply)
Low Shutdown Current (I_Q < 2.5 µA)
4-mm × 4-mm Thermally Enhanced WSON Package Option

Topology	Boost
Vin (min) (V)	1
Vin (max) (V)	14
Vout (min) (V)	1.24
Vout (max) (V)	14
Switch current limit (typ) (A)	2.85
Type	Converter
Regulated outputs (#)	1
Switching frequency (min) (kHz)	300
Switching frequency (max) (kHz)	2000
Iq (typ) (mA)	0.11
Features	Enable, Nonsynchronous rectification
Duty cycle (max) (%)	90
Operating temperature range (°C)	-40 to 125
Rating	Automotive