LTC3448EMS8E Linear Technology, LTC3448EMS8E Datasheet - Page 17

• 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: -

TYPICAL APPLICATIO S
AC COUPLED
100mV/DIV
250mA/DIV
LDOCNTRL
2V/DIV
I
V
LOAD
OUT
V
V
I
LOAD
IN
OUT
= 3.6V
= 2.5V
= 100µA TO 300mA
Load Step
40µs/DIV
Single Li-Ion 1.2V/600mA Regulator with 2.5MHz External Synchronization
2.5V TO 5.5V
2.5V TO 5.5V
Single Li-Ion 2.5V/600mA Regulator with 1.8MHz External
U
OR GREATER 1.8MHz
EXTERNAL CLOCK
TO 0V TO 1.3V OR
GREATER 2.5MHz
V
EXTERNAL CLOCK
V
IN
IN
TO 0V TO 1.3V
µPROCESSOR
3448 TA12b
CONTROL
Synchronization and External MODE
C
4.7µF
CER
C
4.7µF
CER
IN
IN
TO
4
8
3
6
7
4
8
6
7
V
RUN
MODE
FREQ
SYNC
V
RUN
FREQ
SYNC
IN
IN
LTC3448
LTC3448
GND
GND
9
MODE
V
9
3448 TA12
V
SW
OUT
V
3448 TA13
SW
OUT
V
FB
AC COUPLED
FB
100mV/DIV
250mA/DIV
LDOCNTRL
5
2
1
5
2
3
1
2V/DIV
2.2µH
I
V
LOAD
2.2µH
1.58M
OUT
500k
316k
316k
V
V
I
LOAD
IN
OUT
= 3.6V
= 2.5V
= 100µA TO 600mA
C
22pF
C
22pF
FF
FF
Load Step
C
10µF
CER
C
10µF
CER
OUT
40µs/DIV
OUT
V
2.5V
600mA
V
1.2V
600mA
OUT
OUT
3448 TA12c
LTC3448
17
3448f