IR3475MTR1PBF International Rectifier, IR3475MTR1PBF Datasheet - Page 9
IR3475MTR1PBF
Manufacturer Part Number
IR3475MTR1PBF
Description
IC BUCK SYNC ADJ 10A PQFN
Manufacturer
International Rectifier
Series
SupIRBuck™r
Type
Step-Down (Buck), PWM - Current Moder
Datasheet
1.IR3475MTRPBF.pdf
(21 pages)
Specifications of IR3475MTR1PBF
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 ~ 27 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
*
Package / Case
*
Primary Input Voltage
27V
No. Of Outputs
1
Output Voltage
12V
Output Current
10A
No. Of Pins
17
Operating Temperature Range
-40°C To +125°C
Peak Reflow Compatible (260 C)
Yes
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 - 27
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
Industrial 24v Input
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
TYPICAL OPERATING DATA
Tested with demoboard shown in Figure 4, VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, T
unless otherwise specified.
350
300
250
200
150
100
1.064
1.062
1.060
1.058
1.056
1.054
Figure 5: Efficiency vs. Load Current for VOUT = 1.05V
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
50
0
Figure 7: Switching Frequency vs. Load Current
0
0.01
0
9
2
Figure 9: Load Regulation
2
February 16, 2011 | ADVANCED DATASHEET | V1.8 | PD97602
0.1
Load Current (A)
Load Current (A)
Load Current (A)
19VIN
12VIN
4
8VIN
VIN = 19V
VIN = 12V
VIN = 8V
4
6
6
1
8
8
10
10
10
10A Highly Integrated SupIRBuck
1200
1000
1.064
1.062
1.060
1.058
1.056
1.054
800
600
400
200
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
0
Figure 6: Efficiency vs. Load Current for VIN = 12V
200
0.01
8
Figure 10: Line Regulation at I
Figure 8: R
9
10
400
11
FF
vs. Switching Frequency
0.1
Frequency (kHz)
Load Current (A)
Input Voltage (V)
12
VOUT = 1.05V; L = 1.5µH, 3.8mΩ
VOUT = 1.5V; L = 2.2µH, 6mΩ
VOUT = 3.3V; L = 3.3µH, 10.8mΩ
A
= 25
600
13
TM
o
14
C, no airflow,
5.0 Vout
4.0
3.0
2.0
1.0
15
OUT
1
IR3475
= 10A
800
16
17
4.5
3.5
2.5
1.5
0.5
18
1000
10
19