IR3865MTRPBF International Rectifier, IR3865MTRPBF Datasheet - Page 7

• 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

TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 7, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T
airflow, unless otherwise specified
2/16/2011 Rev2.3
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
1.075
1.070
1.065
1.060
1.055
1.050
1.045
350
300
250
200
150
100
50
Figure 1. Efficiency vs. Load Current for
0
0.01
0
Figure 3. Switching Frequency vs.
0
Figure 5. Load Regulation
1
2
2
VOUT = 1.05V
Load Current
16VIN
12VIN
7VIN
0.1
3
Load Current (A)
7VIN
12VIN
16VIN
Load Current (A)
Load Current (A)
4
4
5
6
6
1
7
8
8
9
10
10
10
1200
1000
800
600
400
200
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
1.075
1.070
1.065
1.060
1.055
1.050
1.045
0
Figure 2. Efficiency vs. Load Current for
200
0.01
Figure 6. Line Regulation at I
Figure 4. R
7
8
400
FF
9
vs. Switching Frequency
0.1
Frequency (kHz)
VIN = 12V
Load Current (A)
10
Input Voltage (V)
VOUT = 3.3V; L = 3.3uH, 10.8mΩ
VOUT = 1.5V; L = 2.2uH, 6.0mΩ
VOUT = 1.05V; L = 1.5uH, 3.8mΩ
11
600
IR3865MBF
12
5.0 Vout
4.0
3.0
2.0
1.0
A
1
= 25
13
OUT
800
o
C, no
= 10A
14
4.5
3.5
2.5
1.5
0.5
15
7
1000
10
16