LM2623-Q1 Gated-Oscillator-Based Automotive DC-DC Boost Converter | TI.com

LM2623-Q1 (ACTIVE)

Gated-Oscillator-Based Automotive DC-DC Boost Converter

Gated-Oscillator-Based Automotive DC-DC Boost Converter - LM2623-Q1
 

Description

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.

Features

  • 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

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Parametrics Compare all products in Boost Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switch Current Limit (Typ) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Iout (Max) (A)
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
LM2623-Q1 LM2735-Q1 TPS61085-Q1 TPS61087-Q1 TPS61093-Q1 TPS61175-Q1
1.0     2.7     2.3     2.5     1.6     2.9    
14     5.5     6     6     6     18    
1.24     3     2.8     3     1.7     2.9    
14     24     18.5     18.5     17     38    
  2.25     2.6     4     1.1     3.8    
1     1     1     1     1     1    
300       480     900       160    
2000       1500     1500     1400     2640    
0.11     7     0.07     0.075     0.9     3    
Enable     Enable     Enable
Light Load Efficiency    
Enable
Power Good    
Enable
Output Discharge    
Enable
Frequency Synchronization
Light Load Efficiency    
2              
90       89     90     93     93    
-40 to 125     -40 to 125     -40 to 105     -40 to 125     -40 to 125     -40 to 125    
Automotive     Automotive     Automotive     Automotive     Automotive     Automotive    
WSON     SOT-23
WSON    
VSSOP     VSON     SON     HTSSOP    

Other qualified versions of LM2623-Q1

Version Part Number Definition
Catalog LM2623 TI's standard catalog product