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MB3821

Features: • Synchronous rectification• High efficiency : 93 % (normal power mode, VIN = 6 V, load 1 A) : 84 % (low power mode, VIN = 6 V, load 20 mA)• Built-in power mode selector circuit• Reference voltage accuracy : 2.5V ± 2 %• Built-in error amp input control type ...

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SeekIC No. : 004413289 Detail

MB3821: Features: • Synchronous rectification• High efficiency : 93 % (normal power mode, VIN = 6 V, load 1 A) : 84 % (low power mode, VIN = 6 V, load 20 mA)• Built-in power mode selector ...

MB3821 Data Sheet

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Part Number:
MB3821
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/27

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Product Details

Description



Features:

• Synchronous rectification
• High efficiency : 93 % (normal power mode, VIN = 6 V, load 1 A)
                          : 84 % (low power mode, VIN = 6 V, load 20 mA)
• Built-in power mode selector circuit
• Reference voltage accuracy : 2.5V ± 2 %
• Built-in error amp input control type soft start circuit
• Totem pole type output for N-ch MOSFET applications
• Built-in timer-latch type short protection circuit


Pinout

Connection Diagram


Specifications

Parameter

Symbol

Condition

Rating

Unit

Min.

Max.

Power supply voltage

VCC

-

-

32

V

Bias voltage

VB

-

-

17

V

Output current

IO

-

-

50

mA

Output peak current

IO

Duty 5%

-

500

mA

Power dissipation

PD

Ta +25°C

-

740*

mW

Storage temperature

Tstg

-

55

+125

°C

* : The packages are mounted on the epoxy board (10 cm ´ 10 cm).
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
                  temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.


Description

The MB3821 is a pulse width modulation (PWM) type 2-channel DC/DC converter IC with synchronous rectification designed for low voltage, high efficiency operation in high precision and high frequency applications, ideal for down conversion.

A normal/low-power mode selection is provided, MB3821 is ideal for an internal power supply (3.3V, 5V) in applications with substantial load current variation, such as notebook computers.




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