LT1304-5.0V UTC, LT1304-5.0V Datasheet - Page 8

• Manufacturer Part Number: LT1304-5.0V
• Description: MICROPOWER DC/DC CONVERTERS
• Manufacturer: UTC

UTC LT1304/LT1304-3.3V/LT1304-5.0V
If the full power capability of the LT1304 is not required,peak switch current can be limited by connecting a resistor
R
power components can then be used. The graph in Figure 6 shows switch current vs R
UTC
LIM
from the I
*SUMIDA CD54-220
LIM
Soft Start(Optional)
Figure4.2-Cell to 5V/200mA Boost Converter Takes Four
External Parts.Components with Dashed Lines Are for
2 CELLS
pin to ground. With R
UNISONIC TECHNOLOGIES CO., LTD.
+
500mA/DIV
100 μ F
Figure 3. Start-Up Response.Input Current Rises Quickly to
1A. VOUT Reaches 5V in Approximately 1ms.Output Drives
20mA Load
10V/DIV
2V/DIV
V
V
OUT
SHDN
LINEAR INTEGRATED CIRCUIT
I
IN
LIM
= 22k, peak switch current is reduced to approximately 500mA. Smaller
LBI
IBO
GND
V IN
1ms/DIV
LT1304-5.0
22 μH *
SENSE
SHDN
+
I LIM
SW
C1
1 μF
1M
R1
MBRS130L
SHUTDOWN
LIM
resistor value.
+
100 μF
200mA
5V
QW-R103-018,A
8