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ILC6381CP-50 Datasheet

  • ILC6381CP-50

  • Analog IC

  • 8頁

  • ETC

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www.fairchildsemi.com
ILC6380/81
SOT-89 Step-up Dual-Mode Switcher with Shutdown
Features
85% efficiency at 50mA
Start-up voltages as low as 900mV
鹵2.5% accurate outputs
Complete switcher design with only 3 external
components
鈥?50, 100 and 180kHz switching frequency versions
available
鈥?Shutdown to 0.5碌A(chǔ) Iq
鈥?External transistor option allows several hundred
milliamp switcher design
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Description
100mA boost converter in 5-lead SOT-89 package using both
PFM and PWM conversion techniques. In normal operation
the ILC6380 runs in PWM mode running at one of three fixed
frequencies. At light loads the ILC6380 senses when the duty
cycle drops to approximately 10%, and automatically
switches into a power-saving PFM switching technique. This
maintains high efficiencies both at full load and in system
sleep conditions.
Only 3 external components are needed to complete the
switcher design, and standard voltage options of 2.5, 3.3, and
5.0V at 鹵2.5% accuracy feature on-chip phase compensation
and soft-start design.
ILC6381 drives an external transistor for higher current
switcher design, with all of the features and benefits of the
ILC6380.
Applications
鈥?Cellular Phones, Pagers
鈥?Portable Cameras and Video Recorders
鈥?Palmtops and PDAs
Typical Applications
CE
V
OUT
L
V
IN
+
CE
SD
V
OUT
L
3
2
1
SD
3
2
1
ILC6380
V
IN
4
5
C
L
Tr
C
B
4
ILC6381
5
+
C
L
R
B
GND
GND
Figure 1:
L: 100碌H (SUMIDA, CD-54)
SD: Diode (Schottky diode; MATSUSHITA MA735)
CL: 16V 47碌F (Tantalum Capacitor; NICHICON, F93)
Figure 2:
L: 47碌H (SUMIDA, CD-54)
SD: Diode (Schottky diode; MATSUSHITA MA735)
CL: 16V 47碌F (Tantalum Capacitor; NICHICON, F93)
RB: 1kW
CB: 3300pF
Tr: 2SC3279, 2SDI628G
Rev. 1.5
漏2001 Fairchild Semiconductor Corporation

ILC6381CP-50相關(guān)型號PDF文件下載

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