LTC3546IUFD#PBF Linear Technology, LTC3546IUFD#PBF Datasheet - Page 7

• 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

100mV/DIV
250mA/DIV
TYPICAL PERFORMANCE CHARACTERISTICS
I
V
LOAD
100
OUT
98
96
94
92
90
88
86
84
82
80
2.25
95
94
93
92
91
90
89
88
87
86
85
OUT2 Effi ciency vs V
OUT1 Load Step
SW1D CONNECTED TO SW2
V
V
I
0.5
LOAD
SW1D CONNECTED TO SW2
V
IN
OUT
OUT1 Effi ciency vs Frequency
OUT
SW1D CONNECTED TO SW1
V
V
I
LOAD
= 3.6V
IN
OUT
2.75
= 1.2V
= 100mA TO 0.9A
= 2.5V
= 3.6V
1.0
= 1.8V
= 400mA
3.25
1.5
FREQUENCY (MHz)
100μs/DIV
3.75
V
2.0
IN
(V)
4.25
2.5
IN
600mA
3A
3.0
4.75
3.5
5.25
3546 G20
3546 G23
3546 G26
4.0
100mV/DIV
1A/DIV
I
V
LOAD
OUT
100
98
96
94
92
90
88
86
84
82
80
2.25
95
94
93
92
91
90
89
88
87
86
85
OUT2 Load Step
SW1D CONNECTED TO SW2
V
V
I
OUT2 Effi ciency vs V
0.5
LOAD
SW1D CONNECTED TO SW1
V
IN
OUT
OUT1 Effi ciency vs Frequency
OUT
SW1D CONNECTED TO SW2
V
V
I
LOAD
= 3.6V
IN
OUT
2.75
= 1.8V
= 300mA TO 2.9A
= 2.5V
= 3.6V
1.0
= 1.8V
= 200mA
3.25
1.5
FREQUENCY (MHz)
100μs/DIV
3.75
V
2.0
IN
(V)
4.25
2.5
IN
400mA
2A
3.0
4.75
3.5
3546 G24
5.25
3546 G21
3546 G27
4.0
100mV/DIV
100mV/DIV
1A/DIV
1A/DIV
I
I
V
V
LOAD
LOAD
OUT
OUT
95
94
93
92
91
90
89
88
87
86
85
0.5
OUT2 Effi ciency vs Frequency
OUT1 Load Step
OUT2 Load Step
SW1D CONNECTED TO SW1
V
V
I
SW1D CONNECTED TO SW1
V
V
I
SW1D CONNECTED TO SW2
V
V
I
LOAD
LOAD
LOAD
IN
OUT
IN
OUT
IN
OUT
= 3.6V
= 3.6V
= 3.6V
1.0
= 1.2V
= 1.8V
= 200mA TO 1.9A
= 200mA TO 1.9A
= 2.5V
= 600mA
1.5
FREQUENCY (MHz)
100μs/DIV
100μs/DIV
2.0
LTC3546
2.5
3.0
3.5
3546fb
7
3546 G28
3546 G22
3546 G25
4.0