IR3865MTRPBF International Rectifier, IR3865MTRPBF Datasheet - Page 10

• 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

50mV/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
10A (IR3865: 81
Figure 18: Thermal Image at VIN = 12V, I
VOUT
PHASE
i
FCCM
PHASE
VOUT
i
2/16/2011 Rev2.3
L
L
10V/div
Figure 16: DCM/FCCM Transition
5V/div
Figure 14: Load Transient 0-4A
500mV/div
2A/div
o
C, Inductor: 52
5A/div
o
C, PCB: 39
10µs/div
50µs/div
OUT
o
C)
=
20mV/div
2V/div
10A (IR3865: 84
Figure 19: Thermal Image at VIN = 16V, I
10V/div
Figure 17: FCCM/DCM Transition
Figure 15: Load Transient 6-10A
5V/div
500mV/div
5A/div
o
C, Inductor: 53
5A/div
IR3865MBF
A
o
C, PCB: 39
= 25
50µs/div
5µs/div
o
C, no
PHASE
PHASE
FCCM
VOUT
VOUT
OUT
10
o
C)
=
i
i
L
L