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TLE6389

Features: • Operation from 5V to 60V Input Voltage• 100% Maximum Duty Cycle• Efficiency >90%• Output Current up to 3A• Less than 100A Quiescent Current• 2A Max Shutdown Current• Up to 350kHz Switching Frequency• Adjustable and Fixed 5V and 3.3V Ou...

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SeekIC No. : 004521059 Detail

TLE6389: Features: • Operation from 5V to 60V Input Voltage• 100% Maximum Duty Cycle• Efficiency >90%• Output Current up to 3A• Less than 100A Quiescent Current• 2A Max...

TLE6389 Data Sheet

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Part Number:
TLE6389
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Operation from 5V to 60V Input Voltage
• 100% Maximum Duty Cycle
• Efficiency >90%
• Output Current up to 3A
• Less than 100A Quiescent Current
• 2A Max Shutdown Current
• Up to 350kHz Switching Frequency
• Adjustable and Fixed 5V and 3.3V Output Voltage versions
• 3% output voltage accuracy (PWM Mode)
• Current-Mode Control Scheme
• On Chip Low Battery Detector
• Ambient operation range -40°C to 125°C


Pinout

Connection Diagram


Specifications

Item Parameter Symbol Limit Values Unit Remarks
min. max.
  Supply Input

1.0.1

 

 Voltage VS -0.3 60 V
1.0.2 Current IS  
  Current Sense Input
1.0.3 Voltage VCS -0.3 60 V
1.0.4 Current ICS  
  Gate Drive Output
1.0.5 Voltage VGDRV -0.3 6.8 V |VS
VGDRV|<6.8V
1.0.6 Current IGDRV Internally limited
  Buck Drive Supply Input
1.0.7 Voltage VBDS -0.3 55 V |VS VBDS|<6.8V
1.0.8 Current IBDS  
  Feedback Input
1.0.9 Voltage VFB -0.3 6.8 V  
1.0.10 Current IFB  
  SI_Enable Input
1.0.11 Voltage VSI_ENAB
LE		 -0.3 6.8 V (TLE6389G50-1,
TLE6389G33-1
only)
1.0.12 Current ISI_ENABL
E		  
  SI_GND Input
1.0.13 Voltage VSI_GND -0.3 60 V (TLE6389G50-1,
TLE6389G33-1
only)
1.0.14 Current ISI_GND  
  Enable Input



Description

The TLE6389 step-down DC-DC switching controllers provide high efficiency over loads ranging from 1mA up to 3A. A unique PWM/PFM control scheme operates with up to a 100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates minimum load requirements and reduces the supply current under light loads to 100A.

These step-down controllers drive an external P-channel MOSFET, allowing design flexibility for applications up to 3A. A high switching frequency (up to 350kHz) and operation in continuous- onduction mode allow the use of tiny surface-mount inductors.

Output capacitor requirements are also reduced, minimizing PC board area and system costs. The output voltage is preset at 5V (TLE6389-50) or 3.3V (TLE6389-33) and adjustable for the TLE6389. Input voltages can be up to 60V.




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