LTC3809EMSE-1 Linear Technology, LTC3809EMSE-1 Datasheet - Page 21

• Manufacturer Part Number: LTC3809EMSE-1
• Description: IC CTRLR DC/DC SYNC 10-MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3809EMSE-1

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 9.8 V
• Current - Output: 1A
• Frequency - Switching: 550kHz
• Voltage - Input: 2.75 ~ 9.8 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

TYPICAL APPLICATIONS
Figure 9. 550kHz, Synchronous DC/DC Converter with External Soft-Start, Ceramic Output Capacitor
220pF R
470pF
C
L: VISHAY IHLP-2525CZ-01
D: ON SEMI MBRM120LT3 (OPTIONAL)
L: VISHAY IHLP-2525CZ-01
C
ITH
OUT
100pF
100pF
10nF
118k
187k
: SANYO 4TPB150MC
15k
15k
Figure 8. 550kHz, Synchronous DC/DC Converter with Internal Soft-Start
ITH
59k
59k
1
6
4
2
3
1
6
4
2
3
MODE
IPRG
I
TRACK/SS
V
MODE
IPRG
I
TRACK/SS
V
TH
TH
FB
FB
LTC3809EDD-1
LTC3809EDD-1
GND
GND
11
11
RUN
RUN
V
SW
V
SW
BG
BG
TG
TG
IN
IN
9
8
10
7
5
9
8
10
7
5
MP
Si7540DP
MN
Si7540DP
MP
Si3447BDV
MN
Si3460DV
10μF
(OPT)
10μF
D
V
2.75V TO 8V
1.5μH
150μF
IN
C
L
OUT
V
2.75V TO 8V
1.5μH
IN
C
22μF
+
L
OUT
38091 F08
x2
38091 F09
V
2.5V
(5A AT 5V
OUT
V
1.8V
2A
OUT
IN
)
LTC3809-1
21
38091fc