參數(shù)資料
型號: LX1882-00CDM-TR
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: SWITCHED CAPACITOR REGULATOR, 620 kHz SWITCHING FREQ-MAX, PDSO8
封裝: LEAD FREE, PLASTIC, SOIC-8
文件頁數(shù): 6/13頁
文件大小: 316K
代理商: LX1882-00CDM-TR
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2000
Rev. 1.0e, 2005-03-03
WWW
.Microse
m
i
.CO
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LX1882
Charge Pump Doubler with Linear Regulator
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
ABSOLUTE MAXI MUM RATI NGS
VIN to GND .................................................................................................... -0.3V to 5V
VOUT Voltage.................................................................................................. -0.3V to 6V
CPO to Ground........................................................................................................... 10V
SHDN , FILT, FB Voltage to Ground........................................... -0.3V to (VIN + 0.3V)
VOUT Short –Circuit Duration.............................................................................Indefinite
IOUT.......................................................................................................................... 90mA
Operating Temperature Range
Commercial....................................................................................................0°C to 70°C
Storage Temperature ................................................................................ -65°C to 150°C
Maximum Junction Temperature ............................................................................125°C
Pb-free / RoHS Peak package Solder Reflow Temp. (40 second max. 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.
TH ERM A L DATA
DM
Plastic 8-Pin SOIC
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θ
JA
163°C/W
THERMAL RESISTANCE-JUNCTION TO CASE,
θJC
38°C/W
DU
Plastic 8-Pin MSOP
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θ
JA
206°C/W
THERMAL RESISTANCE-JUNCTION TO CASE,
θJC
39°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
PACKAGE PI N OUT
V
OUT
SHDN
FB
GND
C+
V
IN
C-
CPO
1
2
3
4
5
6
7
8
_______
DM PACKAGE
(Top View)
CPO
C-
FB
V
IN
V
OUT
GND
SHDN
1
2
3
4
5
6
7
8
______
C+
DU PACKAGE
(Top View)
RoHS / Pb-free 100% Matte Tin Lead Finish
FUNCTIONAL PIN DESCRIPTION
PIN NAME
PIN #
DESCRIPTION
VOUT
1
Regulated Output Voltage. It is recommended to bypass VOUT with a low ESR capacitor (> 2F) placed as close
to the pin as possible for best performance. For the adjustable version, the output voltage range is 2.5V to 5.5V.
SHDN
2
Shutdown Pin. The LX1882 is in shutdown mode when a logic low is applied to this pin. Inversely, a logic high
applied to this pin enables the device. When in shutdown mode, the charge pump output is disconnected from VIN
(CPO will be high impedance) and VOUT is connected to ground through an internal 100 switch.
FB
3
Adjustable Version Only. The output voltage can be set by two resistors with the following relationship: VOUT =
FB * (1+ (R1/R2)) where R1 is the resistor connected between VOUT and FB, and R2 is the resistor connected
between FB and GND (see figure 3 on page 6).
FILT
3
Fixed Version Only. Filter pin for internal voltage reference. Typically a 1nF capacitor is connected from FILT to
GND.
GND
4
System Ground.
C-
5
Flying Capacitor Negative Input.
VIN
6
Input Voltage. The input voltage range is 1.8V to 4.4V for the LX1882-00 and 2V to 4.4V for the LX1882-33.
VIN should be bypassed with a > 2F low ESR capacitor placed as close to the pin as possible for best
performance. A minimum capacitance value of 0.1F is required.
C+
7
Flying Capacitor Positive Input.
CPO
8
Charge Pump Output Voltage. CPO is approximately 1.95(VIN) at low loads. CPO should be bypassed with a low
ESR capacitor (>2F).
PP
AA
CC
KK
AA
GG
EE
DD
AA
TT
AA
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