IR3476MTRPBF International Rectifier, IR3476MTRPBF Datasheet - Page 10
IR3476MTRPBF
Manufacturer Part Number
IR3476MTRPBF
Description
IC BUCK SYNC ADJ 12A PQFN
Manufacturer
International Rectifier
Series
SupIRBuck™r
Type
Step-Down (Buck), PWM - Current Moder
Datasheet
1.IR3476MTRPBF.pdf
(21 pages)
Specifications of IR3476MTRPBF
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.5 V ~ 12 V
Current - Output
12A
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
12A
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 / 5 x 6
Circuit
Single Output
Iout (a)
12
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
otherwise specified.
5V/div
20mV/div 5V/div 5A/div
5V/div 1V/div 1V/div 10A/div
PGOOD
SS
VOUT
iL
EN
PGOOD
SS
VOUT
VOUT
PHASE
iL
5V/div 1V/div 500mV/div
10
(tested by shorting VOUT to PGND)
Figure 15: Over Current Protection
Figure 13: DCM (I
February 16, 2011 | ADVANCED DATASHEET | V1.8 | PD97603
Figure 11: Startup
OUT
= 0.1A)
10µs/div
5ms/div
2ms/div
12A Highly Integrated SupIRBuck
5V/div 1V/div
20mV/div 5V/div 10A/div
5V/div 5V/div 1V/div 500mV/div
Figure 16: Over Voltage Protection
(tested by shorting FB to VOUT)
500mV/div 2A/div
Figure 14: CCM (I
Figure 12: Shutdown
A
= 25
TM
OUT
o
C, no airflow, unless
= 12A)
IR3476
50µs/div
2µs/div
500µs/div
PGOOD
PGOOD
PHASE
VOUT
VOUT
VOUT
EN
SS
FB
iL
iL