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參數(shù)資料
| 型號： | DS1227 |
| 英文描述： | KickStarter Chip |
| 中文描述： | Kickstarter的芯片 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 156K |
| 代理商： | DS1227 |
DS1227
022698 10/20
1) the correct inductance value must be selected.
2) the inductor must be able to handle the required peak
currents.
3) the inductor must have acceptable series resistance
and must not saturate.
When the internal N-channel MOSFET turns on, the
current through the inductor rises linearly since:
di
dt
At the end of the on-time, t
ON
, the peak current, I
PK
is:
V
L
where L is the inductance value
I
PK
V t
ON
L
where : t
ON
1
2f
O
The energy in the inductor is:
E
L
L I
PK
2
2
At maximum load this cycle is repeated f
0
(typically 40
KHz) times per second, and the power transferred
through the coil is P
L
= f
0
x E
L
. Since the coil only sup-
plies the voltage above the input voltage:
I
OUT
P
L
V
OUT
V
IN
DC-DC CONVERTER
Figure 7
–
+
–
+
DC TO DC CONVERTER
VCCO
VDCI
VDCO
EXTERNAL
PINS
D
Q
CLR
OSCEXT
HIENUF
VDCI
ERROR
COMPARATOR
CATCH
LOAD
COMPARATOR
INTERNAL
SIGNALS
SIGNAL)
8 CLK DELAY
40 KHZ
M
U
X
BANDGAP
Q
BOOST
PWRON*
相關PDF資料 |
PDF描述 |
|---|---|
| DS1227S | KickStarter Chip |
| DS1228 | Low-Noise, High-Speed, 16-Bit Accurate CMOS Operational Amplifier 8-SOIC -40 to 125 |
| DS1230W-100 | 3.3V 256k Nonvolatile SRAM |
| DS1233-10 | 5V EconoReset |
| DS1233Z-5 | 5V EconoReset |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1227S | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:KickStarter Chip |
| DS-1227ZJ | 制造商:Hikvision USA 功能描述:Flush Mount Bracket - Wht27In X 3.33In 制造商:HIKVISION 功能描述:FLUSH MOUNT BRACKET - WHT 27IN X 3.33IN |
| DS1228 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:+5V Powered Dual RS-232 Transmitter/Receiver |
| DS-1229ZJ | 制造商:Hikvision USA 功能描述:Camera Wall Mount Bracket9.88In X 3.94In X 7.17In 制造商:HIKVISION 功能描述:CAMERA WALL MOUNT BRACKET 9.88IN X 3.94IN X 7.17IN |
| DS122E | 制造商:Miyama Electric 功能描述: |
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