LTC3546IUFD#PBF Linear Technology, LTC3546IUFD#PBF Datasheet - Page 8

• Manufacturer Part Number: LTC3546IUFD#PBF
• Description: IC BUCK SYNC ADJ 1A/2A DL 28QFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3546IUFD#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 5 V
• Current - Output: 1A, 2A
• Frequency - Switching: 2.25MHz, 0.75MHz ~ 4MHz
• Voltage - Input: 2.25 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Dc To Dc Converter Type: Step Down
• Pin Count: 28
• Input Voltage: 5.5V
• Output Voltage: 0.6 to 5V
• Switching Freq: 750 TO 4000/2900KHz
• Output Current: 2A
• Efficiency: 96%
• Package Type: QFN EP
• Output Type: Adjustable
• Switching Regulator: Yes
• Load Regulation: 0.2%
• Line Regulation: 0.2%/V
• Mounting: Surface Mount
• Input Voltage (min): 2.25V
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

LTC3546
TYPICAL PERFORMANCE CHARACTERISTICS
8
0.080
0.075
0.070
0.065
0.060
0.055
0.050
95
94
93
92
91
90
89
88
87
86
85
–1
–2
–3
–4
–5
–6
2
1
0
0.5
–50
OUT2 Effi ciency vs Frequency
Frequency Variation vs
Temperature
2.0
SW1D CONNECTED TO SW1
V
V
I
LOAD
OUT2 R
IN
OUT
= 3.6V
1.0
–25
= 2.5V
2.5
= 400mA
N-CHANNEL IMP
FREQ 143k TO GND
FREQ TO V
1.5
DS(ON)
0
3.0
FREQUENCY (MHz)
TEMPERATURE (°C)
2.0
IN
55
SW1D CONNECTED TO SW2
T
3.5
A
vs V
V
= 27°C
IN
2.5
(V)
50
IN
4.0
P-CHANNEL IMP
3.0
75
4.5
3.5
100
5.0
3546 G29
3546 G35
3546 G32
4.0
125
5.5
0.120
0.115
0.110
0.105
0.100
0.095
0.090
0.085
0.080
0.075
0.070
0.120
0.115
0.110
0.105
0.100
0.095
0.090
0.085
0.080
0.075
0.070
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2.0
0.25
OUT1 R
OUT1 Minimum Peak Current
vs V
2.0
SW1D CONNECTED TO SW1
T
N-CHANNEL IMP
V
OUT2 R
A
IN
SW1D CONNECTED TO SW1
T
N-CHANNEL IMP
= 27°C
A
0.35
2.5
= 3.6V
BMC1
= 27°C
2.5
DS(ON)
0.45
3.0
DS(ON)
SW1D TO SW1
3.0
P-CHANNEL IMP
0.55
3.5
V
vs V
P-CHANNEL IMP
V
BMC1
3.5
SW1D TO SW2
IN
vs V
V
IN
0.65
(V)
IN
4.0
(V)
(V)
IN
4.0
0.75
4.5
4.5
0.85
5.0
5.0
3546 G30
3546 G36
0.95
3546 G33
5.5
5.5
0.24
0.23
0.22
0.21
0.20
0.19
0.18
0.17
0.16
0.15
–10
–2
–4
–6
–8
6
4
2
0
6
5
4
3
2
1
0
2.0
0.25
2.0
OUT1 R
Frequency Variation vs V
OUT2 Minimum Peak Current
vs V
SW1D CONNECTED TO SW2
T
V
N-CHANNEL IMP
A
IN
= 27°C
0.35
2.5
= 3.6V
2.5
BMC2
FREQ 143k TO GND
FREQ TO V
DS(ON)
0.45
3.0
3.0
P-CHANNEL IMP
0.55
3.5
SW1D TO SW2
V
3.5
vs V
IN
V
BMC1
V
IN
IN
0.65
(V)
SW1D TO SW1
(V)
IN
4.0
4.0
(V)
0.75
4.5
4.5
IN
0.85
5.0
5.0
3546 G31
3546 G34
0.95
3546 G37
3546fb
5.5
5.5