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参数资料
| 型号： | ILC6383 |
| 厂商： | Fairchild Semiconductor Corporation |
| 元件分类： | DC/DC变换器 |
| 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节至3节电池升压型DC - DC与真正的负载断开，为3.3V，5V或可调输出转换器 |
| 文件页数： | 8/15页 |
| 文件大小： | 480K |
| 代理商： | ILC6383 |
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
5 of ILC6383CIR-XX) to either ILC6383’s output or to
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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PDF描述 |
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| ILC6383CIR50X | 1-Cell to 3-Cell Boost DC-DC Converter with True Load Disconnect, 3.3V, 5V or Adjustable Output |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ILC6383CIR-33 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| ILC6383CIR33X | 功能描述:直流/直流开关转换器 DC/DC RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| ILC6383CIR-50 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| ILC6383CIR50X | 功能描述:直流/直流开关转换器 DC/DC Boost Conv 1to3 Cell RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| ILC6383CIR-ADJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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