IR3865MTRPBF International Rectifier, IR3865MTRPBF Datasheet - Page 9

• Manufacturer Part Number: IR3865MTRPBF
• Description: IC BUCK SYNC ADJ 10A PQFN
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck), PWMr

Specifications of IR3865MTRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.5 V ~ 12 V
• Current - Output: 10A
• Frequency - Switching: Up to 750kHz
• Voltage - Input: 3 V ~ 21 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: *
• Package / Case: *
• Primary Input Voltage: 21V
• No. Of Outputs: 1
• Output Voltage: 12V
• Output Current: 10A
• No. Of Pins: 17
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 3 - 168 Hours
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Part Status: Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 10
• Switch Freq (khz): 0 - 750
• Input Range (v): 3.0 - 21
• Output Range (v): 0.5 - 12
• Ocp Otp Uvlo Pre-bias Soft Start And: Constant On-Time + PGOOD + EN + Temp Comp OCP
• Digital Home Media: Yes
• Mobile Computing: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20mV/div
5V/div
5V/div
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T
airflow, unless otherwise specified
EN
PGOOD
SS
VOUT
PGOOD
VOUT
SS
i
VOUT
PHASE
i
L
L
2/16/2011 Rev2.3
5V/div
1V/div
(tested by shorting VOUT to PGND)
Figure 12: Over Current Protection
5V/div
Figure 10: DCM (I
1V/div
1V/div
5A/div
Figure 8: Startup
500mV/div
10A/div
OUT
= 0.1A)
5ms/div
10µs/div
1ms/div
5V/div
20mV/div
5V/div
1V/div
5V/div
Figure 13: Over Voltage Protection
5V/div
(tested by shorting FB to VOUT)
Figure 11: CCM (I
500mV/div
1V/div
10A/div
Figure 9: Shutdown
500mV/div
2A/div
OUT
IR3865MBF
= 10A)
A
= 25
1ms/div
2µs/div
50µs/div
o
C, no
PGOOD
PGOOD
PHASE
VOUT
VOUT
VOUT
EN
SS
FB
9
i
i
L
L