LTC3411EMS#TRPBF Linear Technology, LTC3411EMS#TRPBF Datasheet - Page 5

• Manufacturer Part Number: LTC3411EMS#TRPBF
• Description: IC CONV DC/DC SYNC STPDWN 10MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3411EMS#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5 V
• Current - Output: 1.25A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.63 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

PIN FUNCTIONS
PIN
1
2
3
4
5
6
7
8
9
10
TYPICAL PERFORMANCE CHARACTERISTICS
100mA/DIV
10mV/DIV
100
95
90
85
80
75
70
65
60
V
OUT
I
L1
Effi ciency vs Load Current
1
Burst Mode Operation
V
V
I
CIRCUIT OF FIGURE 7
LOAD
PULSE SKIP
IN
OUT
OPERATION
Burst Mode
SYNC/MODE
= 3.3V
SHDN/R
= 2.5V
= 50mA
PGOOD
NAME
SGND
PGND
SV
10
PV
SW
V
I
TH
LOAD CURRENT (mA)
FB
IN
IN
T
FORCED CONTINUOUS
100
2μs/DIV
V
V
CIRCUIT OF FIGURE 7
DESCRIPTION
Shutdown/Timing Resistor
Mode Select/Sychronization Pin
Signal Ground
Switch Node
Main Power Ground
Main Power Supply
Signal Power Supply
Power Good Pin
Output Feedback Pin
Error Amplifi er Compensation and Run Pin
IN
OUT
= 3.3V
= 2.5V
1000
3411 G04
3411 G01
10000
100mA/DIV
10mV/DIV
100
95
90
85
80
75
70
65
60
V
OUT
2.5
I
Effi ciency vs V
L1
V
CIRCUIT OF FIGURE 7
V
V
I
CIRCUIT OF FIGURE 7
Pulse Skipping Mode
OUT
LOAD
IN
OUT
I
I
OUT
OUT
= 3.3V
= 2.5V
= 2.5V
= 50mA
= 400mA
= 1.25A
3.5
IN
V
MIN
–0.3
–0.3
IN
2.5
2μs/DIV
0
0
0
0
0
(V)
4.5
NOMINAL (V)
TYP
0.8
0.8
5.5
0
0
3411 G05
3411 G02
MAX
SV
SV
SV
100mA/DIV
PV
100mV/DIV
5.5
5.5
1.0
1.5
10mV/DIV
0.5A/DIV
IN
IN
IN
IN
V
V
OUT
OUT
I
I
L1
L1
V
V
I
CIRCUIT OF FIGURE 7
Load Step
V
V
I
CIRCUIT OF FIGURE 7
Forced Continuous Mode
LOAD
LOAD
IN
OUT
IN
OUT
= 3.3V
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
–0.3
= 3.3V
MIN
= 2.5V
= 2.5V
= 50mA
= 0.25A TO 1.25A
ABSOLUTE MAX (V)
40μs/DIV
2μs/DIV
LTC3411
SV
SV
SV
SV
SV
PV
MAX
IN
IN
IN
IN
IN
IN
6
6
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
+ 0.3
3411fb
3411 G03
3411 G06
5