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ERJ-3EKF4992V Datasheet(PDF) 6 Page - International Rectifier

Part # ERJ-3EKF4992V
Description  9A HIGHLY INTEGRATED SUPLRBUCK
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

ERJ-3EKF4992V Datasheet(HTML) 6 Page - International Rectifier

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August 08, 2012 |DATA SHEET | 3.4
6
IR3899 
9A Highly Integrated SupIRBuck
TM  
Single‐Input Voltage, Synchronous Buck Regulator  
PD‐97661
ELECTRICAL SPECIFICATIONS 
RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN 
 
SYMBOL 
MIN 
MAX 
UNITS
Input Voltage Range* 
PVin 
1.0 
21 
  
Input Voltage Range** 
Vin 
6.8 
21 
Supply Voltage Range*** 
VCC 
4.5 
7.5 
Supply Voltage Range 
Boot to SW 
4.5 
7.5 
Output Voltage Range 
VO 
0.5 
0.86xVin 
Output Current Range 
IO 
±9 
Switching Frequency 
FS 
300 
1500 
kHz 
Operating Junction Temperature 
TJ ‐40 
125 
°C 
*Maximum SW node voltage should not exceed 25V. 
**For internally biased single rail operation.  
*** Vcc/LDO_Out can be connected to an external regulated supply. If so, the Vin pin should be connected to Vcc/LDO_Out pin. 
ELECTRICAL CHARACTERISTICS 
Unless otherwise specified, these specifications apply over, 6.8V < Vin = PVin < 21V, Vref = 0.5V in 0°C < TJ < 125°C.  
Typical values are specified at Ta = 25°C. 
PARAMETER 
SYMBOL 
CONDITIONS 
MIN 
TYP 
MAX 
UNIT 
Power Stage 
Power Losses 
PLOSS 
PVin=Vin = 12V, VO = 1.2V,         
IO = 9A, Fs = 600kHz, L = 0.51uH, 
Vcc = 6.4V, Note 4 
  
1.4   
Top Switch 
Rds(on)_Top 
VBoot ‐Vsw=6.4V,IO=9A, Tj =25°C
  
17.5 
22.5 
mΩ 
Bottom Switch 
Rds(on)_Bot 
Vcc = 6.4V, IO = 9A, Tj = 25°C   
8.5 
11.0  
Bootstrap Diode Forward Voltage   
I(Boot) = 10mA 
180  
260 
470 
mV 
SW Leakage Current 
ISW 
SW = 0V, Enable = 0V   
  
µA 
SW = 0V, Enable = high, Vp = 0V  
 
Dead Band Time 
Tdb 
Note 4 
10 
30 
ns 
Supply Current 
VIN Supply Current (standby) 
Iin(Standby) 
EN = Low, No Switching   
  
100 
µA 
VIN Supply Current (dynamic) 
Iin(Dyn) 
EN = High, Fs = 600kHz,  
Vin = PVin = 21V 
  
12 
16 
mA 
Vcc/ LDO_ Out 
Output Voltage 
Vcc 
 Vin(min) = 6.8V, Icc = 0‐30mA, 
Cload = 2.2uF, DCM = 0 
6.0 
6.4 
6.7 
 Vin(min) = 6.8V, Icc = 0‐30mA, 
Cload = 2.2uF, DCM = 1 
4.0 
4.4 
4.8 
LDO Dropout Voltage 
Vcc_drop  Icc=30mA,Cload=2.2uF  
 
0.7 
Short Circuit Current 
Ishort  
 
70  
mA 
Zero‐crossing Comparator Delay 
Tdly_zc 
Note 4  
256/Fs  


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