LTC1773EMS Linear Technology, LTC1773EMS Datasheet - Page 4

• Manufacturer Part Number: LTC1773EMS
• Description: IC CTRLR DC/DC SYNC STPDN 10MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1773EMS

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 8.5 V
• Current - Output: 6A
• Frequency - Switching: 550kHz
• Voltage - Input: 2.65 ~ 8.5 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: Contains lead / RoHS non-compliant
• Power - Output: -

LTC1773
V
4
TYPICAL PERFOR A CE CHARACTERISTICS
2V/DIV
RUN/SS
1V/DIV
2A/DIV
V
120
100
560
540
530
520
550
OUT
80
60
40
20
0
I
– 60 –40 –20
L
0.5
Start-Up
Maximum Current Sense
Threshold vs V
Oscillator Frequency vs
Temperature
V
V
SEE FIGURE 9
IN
OUT
= 5V
1.0
= 2.5V
1.5
0
TEMPERATURE (°C)
V
20
2.0
40ms/DIV
RUN/SS
RUN/SS
40
2.5
(V)
60
80
3.0
W
100 120
3.5
1773 G07
1773 G10
1773 G13
U
140
4.0
100mV/DIV
2A/DIV
V
105
100
2.5
2.0
1.5
1.0
0.5
OUT
95
85
– 60
I
– 60 –40 –20
L
Maximum Current Sense
Threshold vs Temperature
RUN/SS Pin Current vs
Temperature
Load Step (Burst Mode
Operation)
V
V
100mA TO 5A LOAD STEP
SEE FIGURE 9
IN
OUT
– 40
= 5V
= 2.5V
– 20
0
TEMPERATURE (°C)
0
TEMPERATURE (°C)
20
20
100µs/DIV
40
40
60
60
80
80
100
100 120
120
1773 G08
1773 G11
1773 G14
140
140
500mA/DIV
100mV/DIV
20mV/DIV
2A/DIV
V
V
120
100
OUT
OUT
80
60
40
20
I
0
I
L
L
0
Maximum Current Sense
Threshold vs V
Load Step (Continuous
Mode)
Burst Mode Operation
V
V
V
V
100mA TO 5A LOAD STEP
Burst Mode
OPERATION
I
SEE FIGURE 9
IN
OUT
SEE FIGURE 9
IN
OUT
LOAD
= 5V
0.2
= 5V
= 2.5V
= 2.5V
= 100mA
0.4
FORCED
CONTINUOUS
0.6
100µs/DIV
20µs/DIV
V
ITH
ITH
0.8
(V)
1.0
1.2
1.4
1773 G12
1773 G09
1773 G15
1773fb
1.6