IR3802AMPBF Datasheet PDF - International Rectifier
| Part Number | IR3802AMPBF | |
| Description | SYNCHRONOUS BUCK REGULATOR | |
| Manufacturers | International Rectifier | |
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PD-60357
IR3802AMPbF
SupIRBuckTM
HIGHLY INTEGRATED 6A
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
• Wide Input Voltage Range 2.5V to 21V
• Wide Output Voltage Range 0.6V to 12V
• Continuous 6A Load Capability
• 300kHz High Frequency Operation
• Programmable Over-Current Protection
• Hiccup Current Limit
• Precision Reference Voltage (0.6V)
• Programmable Soft-Start
• Pre-Bias Start-up
• Thermal Protection
• Thermally Enhanced Package
• Small Size 5mmx6mm QFN
• Pb-Free (RoHS Compliant)
Applications
Description
The IR3802A SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
regulator. The onboard switching controller and
MOSFETs make the IR3802A a space-efficient
solution, providing accurate power delivery for
low output voltage applications.
The IR3802A operates from a single 4.5V to 14V
input supply and generates an output voltage
adjustable from 0.6V to 0.8*Vin at loads up to 6A.
A versatile regulator offering programmability of
startup time, power good threshold and current
limit, the IR3802A’s fixed 300kHz switching
frequency allows the use of small external
components.
• Game Consoles
• Set-top Boxes
• Graphics Cards
• LCD TVs
• Desktop PCs
• Distributed Point-of-Loads
• Embedded Systems
• Computing Peripheral Voltage Regulators
The IR3802A also features important protection
functions, such as Pre-Bias startup, hiccup
current limit and thermal shutdown to provide the
required system level security in the event of fault
conditions.
11/04/08
Fig. 1. Typical application diagram
1
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Recommended Operating Conditions
PD-60357
IR3802AMPbF
Symbol
Vin
Vcc
Vc
Vo
Io Note1
Tj
Definition
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Junction Temperature
Min
2.5
4.5
Vin + 5V
0.6
0
-40
Max
21
14
28
12
6
125
Units
V
A
oC
Electrical Specifications
Unless otherwise specified, these specification apply over Vin=Vcc=Vc=12V, 0oC<Tj(Ic)<105oC.
Typical values are specified at Ta = 25oC.
Parameter
Power Loss
Power Loss
MOSFET Rds(on)
Top Switch
Bottom Switch
Reference Voltage
Feedback Voltage
Accuracy
Symbol
Ploss
Rds(on)_Top
Rds(on)_Bot
VFB
Supply Current
VCC Supply Current (Static)
VC Supply Current
(Static)
VCC Supply Current
(Dynamic)
VC Supply Current
(Dynamic)
Under Voltage Lockout
VCC-Start-Threshold
VCC-Stop-Threshold
VCC-Hysteresis
VC-Start-Threshold
VC-Stop-Threshold
VC-Hysteresis
ICC(Static)
IC(Static)
ICC(Dynamic)
IC(Dynamic)
VCC_UVLO(R)
VCC_UVLO(F)
VC_UVLO(R)
VC_UVLO(F)
Test Condition
Vcc=Vin=12V, Vc=24V, Vo=1.8V,
Io=6A, L=2.2uH, Note3
ID=6A, Tj(MOSFET)=25oC
ID=6A, Tj(MOSFET)=25oC
0oC<Tj<105oC
-40oC<Tj<105oC, Note2
SS=0V, No Switching
SS=0V, No Switching
SS=3V, Vc=24V, Vcc=Vin=12V.
Vo=1.8V, Io=0A
SS=3V, Vc=24V, Vcc=Vin=12V.
Vo=1.8V, Io=0A
Supply ramping up
Supply ramping down
Supply ramping up and down
Supply ramping up
Supply ramping down
Supply ramping up and down
Min TYP MAX Units
1.8 W
18 23
18 23
0.6
-1.5
-2.0
+1.5
+2.0
mΩ
V
%
%
10 13
4.5 7
13 20
13 20
mA
4.0
3.7
0.15 0.25
3.1
2.85
0.15 0.2
4.4
4.1
0.3
3.5
3.25
0.25
V
11/04/08
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for IR3802AMPBF electronic component. |
| Information | Total 21 Pages | |
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| Download | [ IR3802AMPBF.PDF Datasheet ] | |
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| Part Number | Description | MFRS |
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