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MFG:FUJ Package Cooled:TSOP
Part Number: MB3821
MFG: FUJ
Package Cooled: TSOP
Description: The MB3821 is a pulse width modulation (PWM) type 2-channel DC/DC converter IC with synchronous rectif...
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MB3821
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DataSheet
General Description
MB3821 General 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, ideal for an internal power supply (3.3V, 5V) in applications with substantial load current variation, such as notebook computers.
MB3821 Maximum Ratings
|
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 |
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.
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 soft start circuit
• Totem pole type output for N-ch MOSFET applications
• Built-in timer-latch type short protection circuit
• 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
MB3821 Connection Diagram
MB3821
PDF/DataSheet Download
- Datasheet: MB3821
- File Size: 280197 KB
- Manufacturer: FUJITSU [Fujitsu Media Devices Limited]
- Click here to Download
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