參數資料
型號: LTC1517CS5-5
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Micropower, Regulated 5V Charge Pump in a 5-Pin SOT-23 Package
中文描述: SWITCHED CAPACITOR CONVERTER, PDSO5
封裝: PLASTIC, SOT-23, 5 PIN
文件頁數: 1/8頁
文件大?。?/td> 211K
代理商: LTC1517CS5-5
1
LTC1517-3.3
Micropower, Regulated
3.3V Charge Pump in a
5-Pin SOT-23 Package
FEATURES
I
Ultralow Power: I
CC
= 6
μ
A Typ
I
Short-Circuit/Thermal Protected
I
3.3V
±
4% Regulated Output
I
V
IN
Range: 2V to 4.4V
I
Output Current: 8mA (V
IN
2V)
DESCRIPTIO
N
U
The LTC
1517-3.3 is a micropower charge pump DC/DC
converter that produces a regulated 3.3V output. The input
voltage range is 2V to 4.4V, allowing a single cell lithium
battery to produce a regulated 3.3V output over the entire life
of the battery. Extremely low operating current (typically 6
μ
A
with no load) and low external parts count (one 0.1
μ
F flying
capacitor and two small bypass capacitors at V
IN
and V
OUT
)
make the part ideally suited for small, light load battery-
powered applications. The total printed circuit board area of
the application circuit shown below is only 0.045in
2
.
The part operates as a Burst Mode
TM
switched-capacitor
voltage doubler to produce a regulated output. The part has
thermal shutdown capability and can survive a continuous
short circuit from V
OUT
to GND. The device is available in a
5-pin SOT-23 package.
15mA (V
IN
2.5V)
I
No Inductors
I
Ultrasmall Application Circuit (0.045in
2
)
I
700kHz Switching Frequency
I
Available in 5-Pin SOT-23
I
Cellular Telephones
I
Battery-Operated Equipment
I
Local Power Supplies
I
Handheld Instruments
I
PCMCIA Supplies
APPLICATIO
S
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
3.3
μ
F
1517-3.3 TA01
1
2
3
4
5
0.1
μ
F
6.8
μ
F
V
OUT
= 3.3V
±
4%
I
OUT
= 8mA (V
IN
2V)
I
OUT
= 15mA (V
IN
2.5V)
V
IN
2V TO 4.4V
V
IN
GND
LTC1517-3.3
V
OUT
C1
+
C1
OUTPUT CURRENT (mA)
0
O
40
1517 G05
10
20
30
3.40
3.35
3.30
3.25
3.20
T
= 25
°
C
C1 = 0.1
μ
F
C
OUT
= 6.8
μ
F
V
IN
= 2V
V
IN
= 2.5V
Typical Output Voltage
vs Output Current
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相關代理商/技術參數
參數描述
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