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Maxim > Products > [Power and Battery Management]  [Automotive] 
MAX5096, MAX5097
40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

Industry's First Automotive Buck Converter with Low IQ LDO Mode Operates Seamlessly from 4V Cold Crank to 40V Input


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 540kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX5096/MAX5097 easy-to-use, Dual Mode™, DC-DC converters operate as LDO (low dropout) or switch-mode buck converters. At a high output load, the converters operate as high-efficiency pulse-width-modulated (PWM) switch-mode converters and reduce the power dissipation. The devices switch to a low-quiescent-current (IQ) LDO mode of operation at light load. During the key-off condition, the system's microcontroller drives the LDO/active-low BUCK input on the fly and forces the MAX5096/MAX5097 into LDO Mode, thereby reducing the quiescent current significantly.

In Buck Mode, the MAX5096/MAX5097 operate from a 5V to 40V input voltage range and deliver up to 600mA of load current with excellent load and line regulation. The fixed-switching frequency versions of 135kHz and 330kHz are available. The MAX5096/MAX5097 DC-DC internal oscillator can be synchronized to an external clock. External compensation and a current-mode control scheme make it easy to design with.

In LDO Mode, the MAX5096/MAX5097 operate from a 4V to 40V input voltage. The LDO Mode operation is intended for a lower output load current of up to 100mA. The quiescent current at 100µA load in LDO Mode is only 41µA (typ).

The MAX5096/MAX5097 feature an enable input that shuts down the device, reducing the current consumption to 6µA (typ). Additional features include a power-on reset output with a capacitor-adjustable timeout period, programmable soft-start, output tracking, output overload, short-circuit and thermal shutdown protections.

The MAX5096/MAX5097 operate over the -40°C to +125°C automotive temperature range and are available in thermally enhanced 20-pin TSSOP or 16-pin TQFN packages.

An evaluation kit is available:  MAX5097AEVKIT  

Key Features   Applications/Uses
  • High-Efficiency Switcher Mode (Buck Mode) or Low-Quiescent-Current Linear Regulator (LDO Mode) Operation
  • Wide Operating Input Voltage Range
    • +5V to +40V Buck Mode
    • +4V to +40V LDO Mode
  • Fixed 3.3V or 5V and Adjustable (1.24V to 11V) Output Voltage Versions
  • 6µA (typ) Shutdown Current
  • Fixed 135kHz or 330kHz Switching Frequency
  • External Frequency Synchronization
  • Programmable Soft-Start
  • Integrated Microprocessor Reset (Active-Low RESET) Circuit with Programmable Timeout Period
  • Thermal and Short-Circuit Protection
  • -40°C to +125°C Automotive Temperature Range
  • Thermally-Enhanced Package Dissipates
    • 2.6W at TA = +70°C (16-Pin TQFN)
    • 1.7W at TA = +70°C (20-Pin TSSOP)

 
  		• Automotive
  		• Home Security/Safety

    Key Specifications:  Step-Down Switching Regulators
    Part Number VIN
    (V)    		 VIN
    (V)    		 VOUT
    (V)    		 VOUT
    (V)    		 Preset VOUT
    (V)    		 Max. IOUT
    (A)    		 Max. IOUT
    (A)    		 Output Adjust. Method DC-DC Outputs Oper. Freq.
    (kHz)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max min max ≥ ≤ max w/pins See Notes
    MAX5096  4 40 1.25 11
    3.3
    5
    		 0.6 0.6
    Preset
    Resistor
    		 1 135
    TQFN/16
    TSSOP-EP/20
    		 26 $2.74 @1k
    MAX5097  330
    TQFN/16
    TSSOP-EP/20
    		 $2.74 @1k
    See All Step-Down Switching Regulators (264)

    Diagram
    MAX5096, MAX5097: Simplified Diagram
    Simplified Diagram

    Evaluation Kits
  		• MAX5097AEVKIT

    Design Guides
  		• Automotive (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-18 of 18

    MAX5096 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5096AATE+  
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096AATE+T    
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096BATE+  
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096BATE+T    
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096AAUP+  
    		Active TSSOP-EP;20 pin;43 mm²
    Outline Drawing: 21-0108 (PDF)
    Land Pattern: 90-0115 (PDF)
    Use pkgcode/variation: U20E+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096AAUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5096BAUP+  
    		Active TSSOP-EP;20 pin;43 mm²
    Outline Drawing: 21-0108 (PDF)
    Land Pattern: 90-0115 (PDF)
    Use pkgcode/variation: U20E+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5096BAUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5097 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX5097BATE/V+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5097AATE+  
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097AATE+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5097BATE+  
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097BATE+T    
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097BATE/V+    
    		Active TQFN;16 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0073 (PDF)
    Use pkgcode/variation: T1655+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097AAUP+  
    		Active TSSOP-EP;20 pin;43 mm²
    Outline Drawing: 21-0108 (PDF)
    Land Pattern: 90-0115 (PDF)
    Use pkgcode/variation: U20E+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097AAUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX5097BAUP+  
    		Active TSSOP-EP;20 pin;43 mm²
    Outline Drawing: 21-0108 (PDF)
    Land Pattern: 90-0115 (PDF)
    Use pkgcode/variation: U20E+4*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX5097BAUP+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet

    More Information
  		• New Product Press Release 2006-09-12 

    Related Products
    MAX5033 500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter
    MAX5080, MAX5081 1A, 40V, MAXPower Step-Down DC-DC Converters
    MAX5096, MAX5097 40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

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    Document Ref.: 19-0603; Rev 2; 2007-12-04
    This page last modified: 2007-12-04


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