LM5165-Q1 Automotive, 3V-65V, 150mA Synchronous Buck Converter With Ultra-Low IQ | TI.com

LM5165-Q1
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Automotive, 3V-65V, 150mA Synchronous Buck Converter With Ultra-Low IQ

 

Description

The LM5165-Q1 device is a compact, easy-to-use, 3-V to 65-V, ultra-low IQ synchronous buck converter with high efficiency over wide input voltage and load current ranges. With integrated high-side and low-side power MOSFETs, up to 150-mA of output current can be delivered at either fixed output voltages of 3.3 V or 5 V or at an adjustable output. The converter is designed to simplify implementation while providing options to optimize the performance for the target application. Pulse Frequency Modulation (PFM) mode is selected for optimal light-load efficiency or Constant On-Time (COT) control for nearly constant operating frequency. Both control schemes do not require loop compensation while providing excellent line and load transient response and short PWM on-time for large step-down conversion ratios.

The high-side P-channel MOSFET can operate at 100% duty cycle for lowest dropout voltage and does not require a bootstrap capacitor for gate drive. Also, the current limit setpoint is adjustable to optimize inductor selection for a particular output current requirement. Selectable and adjustable start-up timing options include minimum delay (no soft start), internally fixed (900 µs), and externally programmable soft start using a capacitor. An open-drain PGOOD indicator can be used for sequencing, fault reporting, and output voltage monitoring. The LM5165-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 10-pin VSON and VSSOP packages with 0.5-mm pin pitch.

Features

  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40ºC to 125ºC Ambient Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • Wide Input Voltage Range of 3 V to 65 V
  • Fixed (3.3-V, 5-V) or Adjustable Output Voltages
  • Maximum Output Current as High as 150 mA
  • 10.5-µA No Load Quiescent Current
  • –40°C to 150°C Junction Temperature Range
  • Selectable PFM or COT Mode Operation
  • Active Slew Rate Control for Low EMI
  • Integrated 2-Ω PMOS Buck Switch
    • Supports 100% Duty Cycle for Low Dropout
  • Integrated 1-Ω NMOS Synchronous Rectifier
    • Eliminates External Rectifier Diode
  • Programmable Current Limit Setpoint (4 Levels)
  • 1.223-V Internal Voltage Reference
  • 900-µs Internal or Programmable Soft Start
  • Monotonic Start-Up into Prebiased Output
  • No Loop Compensation or Bootstrap Components
  • Precision Enable and Input UVLO With Hysteresis
  • Thermal Shutdown Protection With Hysteresis
  • 10-Pin VSON and VSSOP Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

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WEBENCH ® Designer LM5165-Q1

Part Number
  Min   Max Range
Vin -  V 3.00 to 65.00V
Vout  V 1.223 to 60.00V
Iout  A 0.15A
Ambient Temp   °C -40 to 125 °C
Product Option

Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order 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) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM5165-Q1 Order now 3     65     1.23     65     0.15     1     50     600     0.01     Adjustable Current Limit
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable
Soft Start Adjustable    
Constant on-time (COT)     100     -40 to 150     Automotive     VSON | 10
VSSOP | 10    
Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
LM5009 Order now 9.5     95     2.5     85     0.15     1     50     600     0.485     Enable
Over Current Protection    
Constant on-time (COT)     99     -40 to 125     Catalog     VSSOP | 8
WSON | 8    
Converter     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
8WSON: 16 mm2: 4 x 4 (WSON | 8)    
TPS54061 Order now 4.7     60     0.8     58     0.2     1     50     1100     0.09     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Current Mode     98     -40 to 150     Catalog     SON | 8     Converter     8SON: 9 mm2: 3 x 3 (SON | 8)    
TPS54061-Q1 Order now 4.7     60     0.8     58     0.2     1     50     1100     0.09     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Current Mode     98     -40 to 150     Automotive     SON | 8     Converter     8SON: 9 mm2: 3 x 3 (SON | 8)    
TPS54062 Order now 4.7     60     0.8     58     0.05     1     100     400     0.089     Enable
Frequency Synchronization
Light Load Efficiency
Over Current Protection
Synchronous Rectification
UVLO Adjustable    
Current Mode     98     -40 to 125     Catalog     SON | 8
VSSOP | 8