IR3876TR1PbF IRF [International Rectifier], IR3876TR1PbF Datasheet - Page 9

• Manufacturer Part Number: IR3876TR1PbF
• Description: 12A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
• Manufacturer: IRF [International Rectifier]

20mV/div
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 7, VIN = 12.6V, VCC = 5V, Vout = 1.05V, Fs = 300kHz, TA = 25
unless otherwise specified
5V/div
5V/div
PHASE
PGOOD
i
VOUT
VOUT
EN
PGOOD
SS
VOUT
SS
IOUT
L
1V/div
5V/div
(tested by shorting VOUT to PGND)
5V/div
Figure 12: Over Current Protection
Figure 10: DCM (I
1V/div
1V/div
2A/div
Figure 8: Startup
10A/div
500mV/div
OUT
= 0.1A)
10µs/div
5ms/div
2ms/div
20mV/div
5V/div
5V/div
1V/div
Figure 13: Over Voltage Protection
5V/div
5V/div
(tested by shorting FB to VOUT)
Figure 11: CCM (I
500mV/div
1V/div
Figure 9: Shutdown
5A/div
500mV/div
2A/div
OUT
IR3876MBF
= 12A)
200µs/div
50µs/div
2µs/div
o
C, no airflow,
PGOOD
PGOOD
PHASE
VOUT
VOUT
VOUT
FB
EN
SS
9
i
i
L
L