IR3843AMTR1PBF International Rectifier, IR3843AMTR1PBF Datasheet - Page 10

• Manufacturer Part Number: IR3843AMTR1PBF
• Description: IC REG SYNC BUCK 3A 15-QFN
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3843AMTR1PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 18.9 V
• Current - Output: 3A
• Frequency - Switching: 225kHz ~ 1.32MHz
• Voltage - Input: 1.5 ~ 21 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 15-PowerVQFN
• Power - Output: 682mW
• Part Status: Active
• Package: PQFN / 5 x 6
• Circuit: Single Output
• Iout (a): 3
• Switch Freq (khz): 250 - 1200
• Input Range (v): 1.5 - 21
• Output Range (v): 0.7 - 0.9*Vin
• Ocp Otp Uvlo Pre-bias Soft Start And: PGOOD + EN + SEQ
• Digital Home Media: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: IR3843AMTR1PBFTR

Rev 13.0
Typical Efficiency and Power Loss Curves
Vin=12V, Vcc=5V, Io=0.3A-3A, F
The table below shows the inductors used for each of the output voltages
in the efficiency measurement.
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
96
94
92
90
88
86
84
82
80
78
76
74
0
0.3
0.3
0.6
0.9V
0.9V
0.6
Vout (V)
Vout (V)
0.9
0.9
1.1
1.1
1.2
1.2
1.5
1.5
1.8
1.8
2.5
2.5
3.3
3.3
1
1
5
5
1V
1V
0.9
0.9
s
=600kHz, Room Temperature, No Air Flow
L (uH)
L (uH)
1.1V
1.1V
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.2
2.2
2.2
2.2
3.3
3.3
3.3
3.3
4.7
4.7
1.2
1.2
1.2V
1.2V
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 3.3uH
IHLP2525EZ-01 3.3uH
IHLP2525EZ-01 3.3uH
IHLP2525EZ-01 3.3uH
IHLP2525EZ-01 4.7uH
IHLP2525EZ-01 4.7uH
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
1.5
1.5
Iout (A)
Iout (A)
1.5V
1.5V
P/N
P/N
1.8
1.8
1.8V
1.8V
2.1
2.1
2.5V
2.5V
(mΩ)
(mΩ)
DCR
DCR
19.9
19.9
19.9
19.9
28.9
28.9
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
13
13
13
13
2.4
2.4
3.3V
3.3V
2.7
2.7
IR3843AMPbF
5V
5V
3
3
PD-97509
10