IR3843AMTR1PBF International Rectifier, IR3843AMTR1PBF Datasheet - Page 11

IC REG SYNC BUCK 3A 15-QFN

IR3843AMTR1PBF

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

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=5V, Vcc=5V, Io=0.3A-3A, F
The table below shows the inductors used for each of the output voltages
in the efficiency measurement.
0.55
0.45
0.35
0.25
0.15
0.05
0.5
0.4
0.3
0.2
0.1
98
96
94
92
90
88
86
84
82
80
78
76
74
72
70
0.7V
0.3
0.7V
0.3
0.75V
0.75V
0.6
0.6
Vout (V)
Vout (V)
0.75
0.75
0.7
0.7
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
0.9V
0.9
0.9
0.9V
s
=600kHz, Room Temperature, No Air Flow
L (uH)
L (uH)
0.82
0.82
0.82
0.82
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1
1
1V
1.2
1V
1.2
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
IHLP2525EZ-01 2.2uH
1.1V
PCMB065T-1R0MS
PCMB065T-1R0MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
PCMB065T-1R5MS
1.1V
1.5
1.5
Iout (A)
Iout (A)
P/N
P/N
1.2V
1.2V
1.8
1.8
1.5V
1.5V
2.1
2.1
(mΩ)
(mΩ)
DCR
DCR
4.6
4.6
4.6
4.6
5.6
5.6
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
1.8V
1.8V
2.4
2.4
2.5V
2.5V
2.7
2.7
IR3843AMPbF
3.3V
3.3V
3
3
PD-97509
11

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