LTC3546IUFD#PBF Linear Technology, LTC3546IUFD#PBF Datasheet - Page 6

• 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
500mA/DIV
6
20mV/DIV
I
V
LOAD
OUT
100
95
90
85
80
75
70
65
60
95
90
85
80
75
70
65
60
0.001
0.001
OUT2 Burst Mode Operation
SW1D CONNECTED TO SW1
V
V
I
OUT1 Effi ciency vs Load Current
OUT2 Effi ciency vs Load Current
LOAD
IN
OUT
SW1D CONNECTED TO SW1
V
V
SW1D CONNECTED TO SW1
V
V
IN
OUT
IN
OUT
= 3.6V
= 3.6V
= 3.6V
= 2.5V
= 300mA
= 1.8V
= 2.5V
0.01
0.01
I
I
1μs/DIV
LOAD
LOAD
0.1
0.1
(A)
(A)
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
1
1
3546 G11
3546 G14
3546 G17
10
10
250mA/DIV
20mV/DIV
I
V
LOAD
OUT
100
95
90
85
80
75
70
65
60
98
96
94
92
90
88
86
84
82
80
0.001
2.25
OUT2 Pulse-Skipping Mode
Operation
OUT1 Effi ciency vs Load Current
OUT1 Effi ciency vs V
SW1D CONNECTED TO SW1
V
V
I
LOAD
SW1D CONNECTED TO SW2
V
V
SW1D CONNECTED TO SW1
V
IN
OUT
IN
OUT
OUT
= 3.6V
= 3.6V
2.75
= 1.8V
= 200mA
= 1.8V
= 1.8V
3.25
0.01
I
1μs/DIV
LOAD
3.75
V
IN
(V)
(A)
4.25
IN
0.1
400mA
2A
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
4.75
5.25
3546 G12
3546 G15
3546 G18
1
250mA/DIV
20mV/DIV
I
V
LOAD
OUT
100
100
95
90
85
80
75
70
65
60
98
96
94
92
90
88
86
84
82
80
0.001
2.25
OUT2 Forced Continuous Mode
Operation
SW1D CONNECTED TO SW1
V
V
I
OUT2 Effi ciency vs Load Current
OUT1 Effi ciency vs V
LOAD
SW1D CONNECTED TO SW2
V
V
IN
OUT
SW1D CONNECTED TO SW2
V
IN
OUT
OUT
= 3.6V
= 3.6V
= 1.8V
2.75
= 100mA
= 2.5V
= 1.8V
0.01
3.25
I
1μs/DIV
LOAD
3.75
V
IN
0.1
1A
(V)
(A)
4.25
200mA
IN
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
4.75
1
3546fb
3546 G13
5.25
3546 G16
3546 G19
10