LTC1877EMS8#TR Linear Technology, LTC1877EMS8#TR Datasheet - Page 5

• Manufacturer Part Number: LTC1877EMS8#TR
• Description: IC BUCK SYNC ADJ .6A 8MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1877EMS8#TR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 10 V
• Current - Output: 600mA
• Frequency - Switching: 550kHz
• Voltage - Input: 2.65 ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

TYPICAL PERFORMANCE CHARACTERISTICS
1400
1200
1000
800
600
400
200
0
–50
Switch Leakage vs Temperature
V
RUN = 0V
IN
–25
AC COUPLED
= 10V
500mA/DIV
500mA/DIV
50mV/DIV
5V/DIV
1V/DIV
1V/DIV
0
V
V
TEMPERATURE (°C)
RUN
OUT
OUT
I
TH
I
I
L
L
25
SYNCHRONOUS
V
V
L = 10μH
V
V
L = 10μH
Start-Up from Shutdown
Load Step Response
IN
OUT
IN
OUT
= 5V
= 5V
50
= 1.5V
= 1.5V
SWITCH
MAIN SWITCH
75
10 s/DIV
10 s/DIV
100
40μs/DIV
50μs/DIV
1877 G12
C
C
I
Burst Mode OPERATION
LOAD
IN
OUT
125
= 10μF
= 47μF
= 50mA TO 500mA
C
C
I
LOAD
IN
OUT
= 10μF
= 47μF
= 500mA
16
14
12
10
8
6
4
2
0
1877 G15
1877 G17
0
Switch Leakage vs Input Voltage
RUN = 0V
2
INPUT VOLTAGE (V)
SYNCHRONOUS
4
SWITCH
AC COUPLED
AC COUPLED
500mA/DIV
500mA/DIV
6
50mV/DIV
50mV/DIV
MAIN SWITCH
1V/DIV
1V/DIV
V
V
OUT
OUT
I
I
TH
TH
I
I
8
L
L
Load Step Response
V
V
L = 10μH
Load Step Response
V
V
L = 10μH
IN
OUT
IN
OUT
1877 G13
= 5V
= 5V
= 1.5V
= 1.5V
10
AC COUPLED
200mA/DIV
20mV/DIV
5V/DIV
V
40μs/DIV
20μs/DIV
OUT
SW
C
C
I
PULSE-SKIPPING MODE
LOAD
I
IN
OUT
L
C
C
I
PULSE-SKIPPING MODE
LOAD
IN
OUT
= 10μF
Burst Mode Operation
V
V
C
= 10μF
IN
OUT
IN
= 47μF
= 200mA TO 500mA
= 47μF
= 50mA TO 500mA
= 5V
= 10μF
= 1.5V
1877 G16
1877 G18
10μs/DIV
LTC1877
L = 10μH
C
I
LOAD
OUT
= 47μF
= 50mA
1877fa
1877 G14
5