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參數(shù)資料
| 型號： | ILC6383CIR50X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1-Cell to 3-Cell Boost DC-DC Converter with True Load Disconnect, 3.3V, 5V or Adjustable Output |
| 中文描述： | 1 A SWITCHING REGULATOR, 345 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 480K |
| 代理商： | ILC6383CIR50X |
ILC6383
PRODUCT SPECIFICATION
8
REV. 1.2.6 6/13/02
Shut Down
The LBI pin is shared with the shutdown pin. A low voltage
(<0.4V) will put the ILC6383 into a power down state. The
simplest way to implement this is with an FET across R6 as
shown in Figure 8. Note that when the device is not in PWM
mode or is in shutdown the low battery detector does not
operate.
When the ILC6383 is shut down, the synchronous rectifier
disconnects the output from the input. This ensures that there
is only leakage (I
IN
< 1μA typical) from the input to the out-
put so that the battery is not drained when the ILC6383 is
shut down.
Figure 8. Shut Down Control
Power Good Output (POK)
The POK output of the ILC6383 indicates when V
OUT
is
within the regulation tolerance of the set output voltage.
POK output is an open drain device output capable of sink-
ing 2mA. It will remain pulled low until the output voltage
has risen to typically 95% of the specified V
OUT
. Note that a
pull-up resistor must be connected from the POK output (pin
some other system voltage source.
Adjustable Output Voltage Selection
The ILC6383-ADJ allows the output voltage to be set using
a potential divider. The formula for setting the adjustable
output voltage is;
V
OUT
= V
FB
x (1+R1/R2), R1+R2
≤
100K
where V
FB
is the threshold set which is 1.25V nominal.
Figure 9. Adjustable Voltage Configuration
Negative Voltage Output
It is possible to generate a negative output voltage as a sec-
ondary supply using the ILC6383. This negative voltage may
be useful in some applications where a negative bias voltage
at low current is required.
Figure 10. Negative Output Voltage
ON/OFF
R5
R6
LBI/SD
3
ILC6383
2 V
IN
7 GND
47
μ
F
ON
OFF
V
IN
1 to 3-cell
R5
R6
15
μ
H
L
47
μ
F
C
OUT
R1
R2
ILC6383-ADJ
MSOP-8
L
X
V
IN
LBI/SD
SEL
GND
LBO
V
FB
V
OUT
V
OUT
V
OUT
= 1.25 (1+R1/R2)
1
2
3
4
8
7
6
5
C
IN
+
PWM
PFM
1
2
L
L
X
V
IN
V
IN
ILC6383
0.01
μ
F
0.01
μ
F
-V
1A Schottky Diodes
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ILC6383CIR-ADJ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| ILC6383CIRADJX | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 DC/DC Boost Conv 1to3 Cell RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| ILC6383CIRAJX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Fairchild Semiconductor Corporation 功能描述: |
| ILC6390 | 制造商:IMPALA 制造商全稱:IMPALA 功能描述:SOT-89 STEP-UP PFM SWITCHER WITH AUTO-LOAD SENSE |
| ILC6390CM-25 | 制造商:IMPALA 制造商全稱:IMPALA 功能描述:SOT-89 STEP-UP PFM SWITCHER WITH AUTO-LOAD SENSE |
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