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IR3710MTRPBF
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings (Referenced to GND)
BOOT Voltage: ................................................40 V
PHASE Voltage:....-5V(100ns),-0.3V(DC) to 32.5 V
FF, ISET:..........................................................32 V
BOOT minus PHASE Voltage:........................7.5 V
Operating Junction Temperature .. -10°C to +150 o C
Storage Temperature Range .......... -65 o C to 150 o C
ESD Rating ...............................................Class 1C
MSL Rating ..................................................Level 2
PVCC: ............................................................7.5 V
VCC:................................................................3.9 V
PGOOD:..........................................................3.9 V
PGND to GND:................................... -0.3V to 0.3V
All other pins ...................................................3.9 V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only and functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications are not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
V IN
BOOT to PHASE
V OUT
Fs
Definition
Input Voltage
Supply Voltage
Output Voltage
Switching Frequency
Min
3
0.5
Max
28*
7.0
12
1000
Units
V
V
V
kHz
* Note: PHASE pin must not exceed 32.5V.
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply: VCC = 3.3V, PVCC = 7.0V, 0 o C ≤ T J ≤ 125 o C
PARAMETER
NOTE
TEST CONDITION
MIN
TYP
MAX
UNIT
BIAS SUPPLIES
VCC Turn-on Threshold
VCC Turn-off Threshold
VCC Threshold Hysterisis
PVCC Turn-on Threshold
PVCC Turn-off Threshold
PVCC Threshold Hysterisis
2.65
2.65
60
60
3
3.05
V
V
mV
V
V
mV
VCC Shutdown Current
VCC Operating Current
PVCC Shutdown Current
FF Shutdown Current
EN=LOW
EN=HIGH, No gate loading
EN=LOW; PVCC = 5V
EN=LOW
25
1.2
20
2
μ A
mA
μ A
μ A
CONTROL LOOP
Reference Accuracy, V REF
On-Time Accuracy
Zero Current Threshold
Soft-Start Current
V FB = 0.5V
R FF = 180K, V IN = 12.6V
Measure at V PHASE
FCCM = EN = HIGH
0.495
270
-4.5
8
0.5
300
10
0.505
330
4.5
12
V
ns
mV
μ A
Page 3 of 20
www.irf.com
IR Confidential
4/26/10
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