|
|
PDF IR3842WMPBF Data sheet ( Hoja de datos )
| Número de pieza | IR3842WMPBF | |
| Descripción | HIGHLY EFFICIENT INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de IR3842WMPBF (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
IR3842WMPbF
www.DataSheet4U.com
SupIRBuckTM
HIGHLY EFFICIENT
INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR
Features
• Greater than 95% Maximum Efficiency
• Wide Input Voltage Range 1.5V to 16V
• Wide Output Voltage Range 0.7V to 0.9*Vin
• Continuous 4A Load Capability
• Integrated Bootstrap-diode
• High Bandwidth E/A for excellent transient
performance
• Programmable Switching Frequency up to 1.5MHz
• Programmable Over Current Protection
• PGood output
• Hiccup Current Limit
• Precision Reference Voltage (0.7V, +/-1%)
• Programmable Soft-Start
• Enable Input with Voltage Monitoring Capability
• Enhanced Pre-Bias Start-up
• Seq input for Tracking applications
• -40oC to 125oC operating junction temperature
• Thermal Protection
• Pin compatible option for 8A and 12A devices
• 5mm x 6mm Power QFN Package, 0.9 mm height
• Lead-free, halogen-free and RoHS compliant
Description
The IR3842W SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
synchronous Buck regulator. The MOSFETs co-
packaged with the on-chip PWM controller make
IR3842W a space-efficient solution, providing
accurate power delivery for low output voltage
applications.
IR3842W is a versatile regulator which offers
programmability of start up time, switching
frequency and current limit while operating in
wide input and output voltage range.
The switching frequency is programmable from
250kHz to 1.5MHz for an optimum solution.
It also features important protection functions,
such as Pre-Bias startup, hiccup current limit and
thermal shutdown to give required system level
security in the event of fault conditions.
Applications
• Server Applications
• Storage Applications
• Embedded Telecom Systems
• Distributed Point of Load Power Architectures
• Netcom Applications
• Computing Peripheral Voltage Regulators
• General DC-DC Converters
1.5V <Vin<16V
4.5V <Vcc<5.5V
PGood
Seq Enable
Vcc
PGood
Rt
SS/ SD Gnd
Vin Boot
SW
OCSet
Fb
Comp
PGnd
Vo
Rev 11.0
Fig. 1. Typical application diagram
1
1 page  
Recommended Operating Conditions
IR3842WMPbF
www.DataSheet4U.com
Symbol
Vin
Vcc
Boot to SW
Vo
Io
Fs
Tj
Definition
Input Voltage
Supply Voltage
Supply Voltage
Output Voltage
Output Current
Switching Frequency
Junction Temperature
Min
Max
Units
1.5 16
4.5 5.5
4.5 5.5 V
0.7 0.9*Vin
0 4A
225
1650
kHz
-40 125 oC
Electrical Specifications
Unless otherwise specified, these specification apply over 4.5V< Vcc<5.5V, Vin=12V, 0oC<Tj< 125oC.
Typical values are specified at Ta = 25oC.
Parameter
Symbol
Test Condition
Min TYP MAX Units
Power Loss
Power Loss
MOSFET Rds(on)
Top Switch
Bottom Switch
Reference Voltage
Feedback Voltage
Accuracy
Ploss
Rds(on)_Top
Rds(on)_Bot
Vcc=5V, Vin=12V, Vo=1.8V, Io=4A,
Fs=600kHz, L=1.5uH, Note4
VBoot -Vsw =5V, ID=6A, Tj=25oC
Vcc=5V, ID=6A, Tj=25oC
0.64 W
24.5
34.0
14.3
19
mΩ
VFB
0oC<Tj<125oC
-40oC<Tj<125oC, Note3
0.7
-1.0 +1.0
-2.0 +2.0
V
%
Supply Current
VCC Supply Current
(Standby)
Vcc Supply Current (Dyn)
Under Voltage Lockout
ICC(Standby)
ICC(Dyn)
SS=0V, No Switching, Enable low
SS=3V, Vcc=5V, Fs=500kHz
Enable high
500
10
VCC-Start-Threshold
VCC-Stop-Threshold
Enable-Start-Threshold
VCC_UVLO_Start
VCC_UVLO_Stop
Enable_UVLO_Start
Vcc Rising Trip Level
Vcc Falling Trip Level
Supply ramping up
3.95
4.15
4.35
3.65
3.85
4.05
1.14 1.2 1.36
Enable-Stop-Threshold
Enable_UVLO_Stop Supply ramping down
0.9 1.0 1.06
μA
mA
V
Enable leakage current
Ien
Enable=3.3V
15 μA
Rev 11.0
5
5 Page 
IR3842WMPbF
www.DataSheet4U.com
Typical Efficiency and Power Loss Curves
Vin=5V, Vcc=5V, Io=0.5A-4A, Fs=600kHz, Room Temperature, No Air Flow
The table below shows the inductors used for each of the output voltages
in the efficiency measurement.
Vout (V)
0.7
0.75
0.9
1
1.1
1.2
1.5
1.8
2.5
3.3
L (uH)
0.6
0.6
0.9
0.9
0.9
1.2
1.2
1.2
1.2
1.2
P/N
MPL104-0R6
MPL104-0R6
MPO104-0R9IR
MPO104-0R9IR
MPO104-0R9IR
MPL1055-1R2IR
MPL1055-1R2IR
MPL1055-1R2IR
MPL1055-1R2IR
MPL1055-1R2IR
DCR
(mΩ)
1.5
1.5
2.45
2.45
2.45
2.5
2.5
2.5
2.5
2.5
98
96
94
92
90
88
86
84
82
80
0.5
0.7V
1.0
0.75V
1.5 2.0 2.5
Load Current (A)
0.9V 1.0V 1.1V 1.2V
3.0 3.5
1.5V 1.8V 2.5V
4.0
3.3V
0.65
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0.5
0.7V
1.0
0.75V
1.5 2.0 2.5
Load Current (A)
3.0
3.5
0.9V 1.0V 1.1V 1.2V 1.5V 1.8V 2.5V
4.0
3.3V
Rev 11.0
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet IR3842WMPBF.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IR3842WMPBF | HIGHLY EFFICIENT INTEGRATED 4A SYNCHRONOUS BUCK REGULATOR | International Rectifier |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |