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GRM188R71H222KA01B Datasheet(PDF) 6 Page - International Rectifier

Part # GRM188R71H222KA01B
Description  16A Highly Integrated SupIRBuck
Download  45 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

GRM188R71H222KA01B Datasheet(HTML) 6 Page - International Rectifier

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JANUARY 18, 2013    | DATA SHEET|    Rev 3.4
6
IR3895 
16A Highly Integrated SupIRBuck  
Single‐Input Voltage, Synchronous Buck Regulator  
PD‐97746
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 
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 
±16 
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. When Vin drops below 6.8V, the internal LDO enters dropout.  Please refer to Smart LDO 
section and Over Current Protection for detailed application information.
    
*** Vcc/LDO_out can be connected to an external regulated supply. If so, the Vin input 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 
Vin = 12V, VO = 1.2V, IO = 16A,  
Fs = 600kHz, L = 0.4uH,  
Vcc = 6.4V (internal LDO), Note 4 
  
3.4   
Top Switch 
Rds(on)_Top 
VBoot ‐ Vsw= 6.4V, IO = 16A, Tj =25°C
  
9.6 
13.5 
mΩ 
Bottom Switch 
Rds(on)_Bot 
Vcc = 6.4V, IO = 16A, Tj =25°C
   
4.2 
6.1  
Bootstrap Diode Forward 
Voltage 
  
I(Boot) = 15mA 
200 
300 
500 
mV 
SW Leakage Current 
ISW 
SW = 0V, Enable = 0V   
  
µA 
SW = 0V, Enable = high, Vp = 0V  
 
Dead Band Time 
Tdb 
Note 4  
20  
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 
  
20 
23 
mA 
VCC LDO Output 
Output Voltage 
Vcc 
 Vin(min) = 6.8V, Icc = 0‐50mA, Cload = 
2.2uF, DCM = 0 
6.0 
6.4 
6.7 
 Vin(min) = 6.8V, Icc = 0‐50mA, Cload = 
2.2uF, DCM = 1 
4.0 
4.4 
4.85 
VCC Dropout 
Vcc_drop  Icc=50mA,Cload=2.2uF  
 
0.8 
Short Circuit Current 
Ishort  
 
70  
mA 


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