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IR3629A の電気的特性と機能

IR3629AのメーカーはInternational Rectifierです、この部品の機能は「HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER」です。


製品の詳細 ( Datasheet PDF )

部品番号 IR3629A
部品説明 HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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IR3629A Datasheet, IR3629A PDF,ピン配置, 機能
Data Sheet No. PD94726
www.DataSheet4U.com
IR3629/IR3629A MPbF
HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
WITH POWER GOOD OUTPUT
Features
Internal 600kHz Oscillator (300kHz “A version”)
Operates with Single 5V or 12V Supply
Programmable Over Current Protection
Hiccup Current Limit Using MOSFET RDS(on)
sensing
Precision Reference Voltage (0.6V)
Programmable Soft-Start
Programmable PGood output
Pre-Bias Start-up
Thermal Protection
12-Lead MLP Package
Applications
Distributed Point-of-Loads
Embedded Systems
Storage Systems
DDR Applications
Graphics Cards
Computing Peripheral Voltage Regulators
General DC-DC Converters
Description
The IR3629/IR3629A is a PWM controller
designed for high performance synchronous Buck
DC/DC applications. The IR3629/IR3629A drives
a pair of external N-MOSFETs using a fixed
600kHz (300kHz “A version”) switching frequency
allowing the use of small external components.
The output voltage can be precisely regulated
using the internal 0.6V reference voltage for low
voltage applications. Protection such as Pre-Bias
startup, hiccup current limit and thermal shutdown
provide the required system level security in the
event of fault conditions.
11/26/2007
Fig. 1: Typical application Circuit
ORDERING INFORMATION
PKG PACKAGE
PIN
DESIG DESCRIPTION
COUNT
M IR3629/IR3629AMPBF 12
M IR3629/IR3629AMTRPBF 12
PARTS
PARTS
T&R
PER TUBE PER REEL ORIENTATION
122 -------
-------- 3000 Figure A

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IR3629A pdf, ピン配列
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Block Diagram
IR3629/IR3629A MPbF
Fig. 2: Simplified block diagram of the IR3629/IR3629A
11/26/2007
3


3Pages


IR3629A 電子部品, 半導体
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IR3629/IR3629A MPbF
Parameter
SYM
Error Amplifier
Input Bias Current
Input Bias Current
Source/Sink Current
Transconductance
IFB1
IFB2
I(source/Sink)
gm
Soft Start/SD
Soft Start Current
ISS
Shutdown
Threshold
Output
SD
Over Current Protection
OCSET Current
Hiccup Current
Hiccup Duty Cycle
IOCSET
IHiccup
Hiccup(duty)
Power Good
Vsns Lower Trip Point
Hysteresis
Pgood Output Low
Voltage
Input Bias Curent
Vsns(trip)
PGood(Hys)
PG(voltage)
ISns
Test Condition
SS=3V
SS=0V
SS=0V
Note3
IHiccup / ISS , Note3
Vsns ramping Down
IPgood =4mA
Min TYP MAX Units
20
50
1000
-0.1
35
70
1300
-0.5
50
90
1600
μA
μmho
15 20 28 μA
0.25
V
15
0.35
15
0
20
3
15
0.38
27.5
0.25
0.3
26
0.41
40
0.5
1
μA
%
V
mV
V
μA
Thermal Shutdown
Thermal
Threshold
Thermal
Hysteresis
Shutdown
Shutdown
Output Drivers
LO, Drive Rise Time
HI Drive Rise Time
TD
TD(Hys)
Tr(Lo)
Tr(Hi)
Note3
Note3
CL=1.5nF, See Fig 3
CL=1.5nF, See Fig 3
140
20
30 60
30 60
oC
LO Drive Fall Time
HI Drive Fall Time
Dead Band Time
Tf(Lo)
Tf(Hi)
Tdead
CL=1.5nF, See Fig 3
CL=1.5nF, See Fig 3
See Fig 3
30 60
30 60
10 50 100
ns
Note2: Cold temperature performance is guaranteed via correlation using statistical quality control.
Not tested in production.
Note3: Guaranteed by Design but not tested in production.
9V
High Side Driver
(HDrv)
2V
Tr
Tf
9V
Low Side Driver
(LDrv)
2V
Deadband
H_to_L
Tr
Tf
Deadband
L_to_H
11/26/2007
Fig. 3: Definition of Rise/Fall time and Deadband Time
6

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共有リンク

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部品番号部品説明メーカ
IR3629A

HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

International Rectifier
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HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

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International Rectifier
IR3629MPBF

HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

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