LTC3448EMS8E Linear Technology, LTC3448EMS8E Datasheet - Page 5

• Manufacturer Part Number: LTC3448EMS8E
• Description: IC CONV DC/DC SYNC STEPDWN 8MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3448EMS8E

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 5.2 V
• Current - Output: 600mA
• Frequency - Switching: 1.5MHz ~ 2.25MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

(From Figure1a Except for the Resistive Divider Resistor Values)
TYPICAL PERFOR A CE CHARACTERISTICS
350
200
150
100
300
250
0.6
0.5
0.4
0.3
0.2
0.1
50
0
0
–50
–50
Switch Leakage vs Temperature
R
V
RUN = 0V
MAIN SWITCH
DS(ON)
IN
–25
= 5.5V
–25
2.5V
3.6V
4.2V
AC COUPLED
vs Temperature
200mV/DIV
100mA/DIV
500mA/DIV
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
SYNCH SWITCH
I
25
V
LOAD
25
SYNCHRONOUS
OUT
I
L
2.5V
3.6V
4.2V
50
V
V
I
C
Load Step
50
LOAD
IN
OUT
OUT
SWITCH
= 3.6V
= 1.5V
= 10µF
= 100µA TO 200mA
75
75
SWITCH
W
MAIN
100
100
3448 G13
3448 G10
U
10µs/DIV
125
125
0.001
0.01
340
320
280
240
220
200
300
260
0.1
10
1
2
Switch Leakage vs Input Voltage
0
Dynamic Supply Current
vs Supply Voltage
I
T
RUN = 0V
T
LOAD
A
A
3448 G16
= 25°C
= 25°C
= 0A
1
SYNCHRONOUS
3
SUPPLY VOLTAGE (V)
2.25MHz
INPUT VOLTAGE (V)
SWITCH
2
4
3
AC COUPLED
1.5MHz
100mV/DIV
250mA/DIV
500mA/DIV
SWITCH
4
MAIN
I
V
LOAD
5
OUT
I
L
5
V
V
I
C
Load Step
LOAD
3448 G11
IN
OUT
OUT
3448 G14
= 3.6V
= 1.5V
= 10µF
= 50mA TO 600mA
6
6
500mA/DIV
5V/DIV
1V/DIV
V
RUN
320
300
240
200
OUT
280
260
220
10µs/DIV
I
L
–50
V
V
I
Dynamic Supply Current
vs Temperature
Start-Up from Shutdown
LOAD
V
I
IN
OUT
LOAD
IN
= 3.6V
–25
= 3.6V
= 1.5V
= 600mA
= 0A
0
TEMPERATURE (°C)
2.25MHz
3448 G17
25
40µs/DIV
50
LTC3448
1.5MHz
75
100
3448 G12
3448 G15
5
3448f
125