2.5/3.5A、36V、2.1MHz、汽车类同步降压 DC-DC 转换器 - LM53635-Q1

LM53635-Q1 (正在供货)

2.5/3.5A、36V、2.1MHz、汽车类同步降压 DC-DC 转换器

 

描述

The LM53625-Q1/LM53635-Q1 synchronous buck regulator is optimized for automotive applications, providing an output voltage of 5 V, 3.3 V, or an adjustable output. Advanced high-speed circuitry allows the LM53625-Q1/LM53635-Q1 to regulate from an input of 18 V to an output of 3.3 V at a fixed frequency of 2.1 MHz. Innovative architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.55 V. All aspects of the LM53625-Q1/LM53635-Q1 are optimized for automotive and performance-driven industrial customers. An input voltage range up to 36 V, with transient tolerance up to 42 V, eases input surge protection design. The automotive-qualified Hotrod QFN package with wettable flanks reduces parasitic inductance and resistance while increasing efficiency, minimizing switch node ringing, and dramatically lowering electromagnetic interference (EMI). An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space. Seamless transition between PWM and PFM modes and low quiescent current (only 15 µA for the 3.3 V option) ensure high efficiency and superior transient responses at all loads.

特性

  • AEC-Q100 Automotive Qualified:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C6
  • –40°C to +150°C Junction Temperature Range
  • 15-µA Quiescent Current at no Load (Typical) with 3.3-V Output
  • 4 mm × 5 mm, 0.5-mm Pitch VQFN Package With Wettable Flanks and 0.6-mm VIN Spacing
  • Low EMI and Switch Noise
  • Spread Spectrum Option
  • External Frequency Synchronization
  • RESET Output with Internal Filter and 3-ms Release Timer
  • Pin-Selectable Forced PWM Mode
  • Built-In Compensation, Soft Start, Current Limit, Thermal Shutdown, and UVLO
  • 0.6-V Dropout at 3.5 A at 105°C TA
  • ±1% Output Voltage Tolerance (–40°C to 125°C TJ)
  • Available With Fixed 5-V, 3.3-V or Adjustable Output

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参数 与其它产品相比 降压转换器 (集成开关)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Special Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
LM53635-Q1 LM26001-Q1 LM26003-Q1 LM43603 LM53600-Q1 LM53601-Q1 LM53602-Q1 LM53603 LM53603-Q1 LM53625-Q1 LMR14030 LMR23625 LMR23630
3.5    3    3    3.5    3.5    3.5    3.5    3.5    3.5    3.5    4    4.5    4.5   
42    38    38    36    42    42    42    42    42    42    40    36    36   
3.2    1.25    1.25    1    3.3    3.2    3.2    3.2    3.2    3.2    1    1    1   
10    35    35    28    9.9    6    9.9    9.9    9.9    10    36    30    30   
3.5    1.5    3    3    0.65    1    2    3    3    2.5    3.5    2.5    3   
1    1    1    1    1    1    1    1    1    1    1    1    1   
1850    150    150    200    1890    1890    1850    1850    1850    1850    200    200    200   
2350    500    500    2200    2400    2400    2350    2350    2350    2350    2500    2200    2200   
0.018    0.038    0.04    0.027    0.023    0.023    0.023    0.023    0.023    0.018    0.04    0.075    0.075   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification
Tracking   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Synchronous Rectification   
Spread Spectrum
Synchronous Rectification   
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Tracking
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Enable
Frequency Synchronization
Light Load Efficiency
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode    Current Mode   
98    98    98    99    98    98    98    98    98    98    98    97    97   
-40 to 150    -40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 150    -40 to 150    -40 to 125    -40 to 150    -40 to 150    -40 to 125    -40 to 125    -40 to 125   
Automotive    Automotive    Automotive    Catalog    Automotive    Automotive    Automotive    Catalog    Automotive    Automotive    Catalog    Catalog    Catalog   
VQFN-HR    HTSSOP    HTSSOP    HTSSOP
SON   
WSON    WSON    HTSSOP    HTSSOP    HTSSOP    VQFN-HR    SO PowerPAD    SO PowerPAD
SON   
SO PowerPAD
SON   
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WEBENCH® Designer LM53635-Q1

  最小   最大 范围
输入电压  V 3.5 to 36.0V
输出电压  V 3.3 to 10.0V
输出电流  A ≤ 3.5A
环境温度  °C -40 to 150°C


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