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參數(shù)資料
| 型號(hào)： | LQH4C470K04M00 |
| 廠商： | Microsemi Corporation |
| 英文描述： | 1.0MHz Inverting DC/DC Converter |
| 中文描述： | 1.0MHz倒轉(zhuǎn)DC / DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | LQH4C470K04M00 |
Microsemi
Microsemi Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2002
Rev. 3.0a, 2005-03-14
W
M
.
C
LX1734
1.0MHz Inverting DC/DC Converter
TM
A B S O L U T E M A X I M U M R A T I N G S
Supply Voltage (V
IN
), Shutdown (
SD
).................................................... 0 to 10V
SW Voltage.......................................................................................-0.4V to 20V
NFB Voltage....................................................................................................-2V
Current Into NFB Pin...................................................................................±1mA
Operating Temperature Range............................................................0°C to 85°C
Maximum Junction Temperature.................................................................125°C
Storage Temperature......................................................................-65°C to 150°C
Peak Package Solder Reflow Temperature
(40 second maximum exposure)..................................................... 260°C (+0, -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal
.
T H E R M A L D A T A
LM
Plastic LM 6-Pin
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JC
8
°
C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JC
).
The
θ
JC
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
P A C K A G E P IN O U T
SW
GND
NFB
SD
V
IN
N/C*
**
LM
P
ACKAGE
(Top View)
* Not Internally Connected.
** Package heatsink should
be connected to ground or
left floating.
RoHS / Pb-free 100% Matte Tin Lead Finish
F U N C T I O N A L P I N D E S C R I P T I O N
N
AME
D
ES CRIPT ION
SW
Power Switch Pin
GND
Common ground reference
NFB
Feedback Pin - Connect to a resistive divider in order to set the output voltage. Feedback threshold is -1.235V.
Given the typical NFB bias current (I
NFB
) of 4μA flows out of the pin, the suggested value for R2 is 10K. Given
R
2
, set R
1
according to:
(
)
NFB
I
R
VOUT
R
+
=
2
235
.
1
235
.
1
1
V
IN
Input Supply – Input pin must be locally bypassed.
SD
Shutdown, Connected to >2V, device is active.
P
A
C
K
A
G
E
D
A
T
A
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