LTC1871IMS-1#TRPBF Linear Technology, LTC1871IMS-1#TRPBF Datasheet - Page 18

• Manufacturer Part Number: LTC1871IMS-1#TRPBF
• Description: IC CONTRLR CURRENT MODE 10-MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost), Flyback, Sepicr

Specifications of LTC1871IMS-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 72 V
• Current - Output: 50mA
• Frequency - Switching: 50kHz ~ 1MHz
• Voltage - Input: 2.5 ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC1871-1
APPLICATIONS INFORMATION
which is typically in the range of 10μF to 100μF . A low ESR
capacitor is recommended, although it is not as critical as
for the output capacitor.
The RMS input capacitor ripple current for a boost con-
verter is:
Please note that the input capacitor can see a very high
surge current when a battery is suddenly connected to
the input of the converter and solid tantalum capacitors
can fail catastrophically under these conditions. Be sure
to specify surge-tested capacitors!
18
I
RMS(CIN)
Table 1. Recommended Component Manufacturers
VENDOR
AVX
BH Electronics
Coilcraft
Coiltronics
Diodes, Inc
Fairchild
General Semiconductor
International Rectifi er
IRC
Kemet
Magnetics Inc
Microsemi
Murata-Erie
Nichicon
On Semiconductor
Panasonic
Sanyo
Sumida
Taiyo Yuden
TDK
Thermalloy
Tokin
Toko
United Chemicon
Vishay/Dale
Vishay/Siliconix
Vishay/Sprague
Zetex
= 0.3 •
V
IN(MIN)
L • f
• D
MAX
Inductors, Transformers
Small-Signal Discretes
Inductors, Capacitors
Capacitors, Inductors
Tantalum Capacitors
MOSFETs, Diodes
Sense Resistors
COMPONENTS
Toroid Cores
Capacitors
Capacitors
Capacitors
Capacitors
Capacitors
Heat Sinks
Capacitors
Capacitors
Capacitors
Inductors
Inductors
MOSFETs
Inductors
Inductors
Resistors
MOSFETs
Diodes
Diodes
Diodes
Diodes
Burst Mode Operation and Considerations
The choice of MOSFET R
determines the load current at which the LTC1871-1 en-
ters Burst Mode operation. When bursting, the controller
clamps the peak inductor current to approximately:
which represents about 20% of the maximum 150mV
SENSE pin voltage. The corresponding average current
depends upon the amount of ripple current. Lower inductor
values (higher ΔI
I
BURST(PEAK)
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[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
TELEPHONE
=
L
R
) will reduce the load current at which
30mV
DS(ON)
generalsemiconductor.com
nec-tokinamerica.com
aavidthermalloy.com
DS(ON)
component.tdk.com
bhelectronics.com
fairchildsemi.com
chemi-com.com
WEB ADDRESS
coiltronics.com
microsemi.com
panasonic.com
nichicon.com
coilcraft.com
mag-inc.com
avxcorp.com
murata.co.jp
onsemi.com
sumida.com
t-yuden.com
tokoam.com
diodes.com
sanyo.co.jp
vishay.com
vishay.com
vishay.com
kemet.com
zetex.com
irctt.com
irf.com
and inductor value also
18711fb