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Manufacturer Part #

NCP1521BSNT1G

NCP1521B Series 3.9 V 600 mA Surface Mount Step-Down DC-DC Converter - TSOP-5

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2052
Product Specification Section
Technical Attributes
Attributes Table
Topology: Buck
Input Voltage: 2.7V to 5.5V
Output Current-Max: 600mA
Output Type: Adjustable
Switching Frequency-Max: 1.8MHz
Operating Temp Range: -40°C to +85°C
Duty Cycle-Max: 100%
Efficiency: 96%
No. of Outputs: 1
Quiescent Current: 45µA
Storage Temperature Range: -55°C to +150°C
Moisture Sensitivity Level: 1
Package Style:  SC-74A (TSOP-5, SOT-25)
Mounting Method: Surface Mount
Features & Applications

The NCP1521B step- down DC-DC converter is a monolithic integrated circuit optimized for portable applications powered from one cell Li- Ion or three cell Alkaline/NiCd/NiMH batteries. The part, available in adjustable output voltage versions ranging from 0.9 V to 3.9 V, is able to deliver up to 600 mA. It uses synchronous rectification to increase efficiency and reduce external part count.

The device also has a built- in 1.5 MHz (nominal) oscillator which reduces component size by allowing smaller inductors and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.  Additional features include integrated soft- start, cycle- by- cycle current limiting and thermal shutdown protection. The NCP1521B is available in a space saving, low profile TSOP5 and UDFN6 packages.

Key Features:

  • Up to 96% Efficiency
  • Best-In-Class Ripple, including PFM Mode
  • Sources up to 600 mA
  • 1.5 MHz Switching Frequency
  • Adjustable Output Voltage from 0.9 V to 3.9 V
  • Synchronous Rectification for Higher Efficiency
  • 2.7 V to 5.5 V Input Voltage Range
  • Low Quiescent Current
  • Shutdown Current Consumption of 0.3 A
  • Thermal Limit Protection
  • Short Circuit Protection
  • All Pins are Fully ESD Protected
  • This is a Pb-Free Device

Benefits:

  • Extends battery life and 'play-time'
  • Allows use of smaller inductor and capacitor
  • Low power consumption at light loading

Applications:

  • Cellular Phones, Smart Phones and PDAs
  • Digital Still/Video Cameras
  • MP3 Players and Portable Audio Systems
  • Wireless and DSL Modems
  • Portable Equipment
  • USB Powered Devices
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
29 Weeks
Minimum Order:
1
Multiple Of:
3000
Total
$0.65
USD
Quantity
Web Price
1
$0.65
50
$0.515
100
$0.495
500
$0.45
1,500+
$0.42
Product Variant Information section