参数资料
型号: LTC1517CS5-5#TRMPBF
厂商: Linear Technology
文件页数: 1/8页
文件大小: 0K
描述: IC REG SWITCHED CAP 5V SOT23-5
标准包装: 1
类型: 切换式电容器(充电泵)
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 2 V ~ 4.4 V
PWM 型: Burst Mode?
频率 - 开关: 700kHz
电流 - 输出: 15mA
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
包装: 标准包装
供应商设备封装: SOT-23-5
产品目录页面: 1339 (CN2011-ZH PDF)
其它名称: LTC1517CS5-5#TRMPBFDKR
LTC1517-5
Micropower, Regulated
5V Charge Pump in a
5-Pin SOT-23 Package
FEATURES
DESCRIPTIO N
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Ultralow Power: I CC = 6 μ A Typ
Short-Circuit/Thermal Protected
5V ± 4% Regulated Output
V IN Range: 2.7V to 5V
Output Current: 10mA (V IN ≥ 2.7V)
20mA (V IN ≥ 3V)
No Inductors
Ultrasmall Application Circuit (0.045in 2 )
800kHz Switching Frequency
Available in 5-Pin SOT-23
The LTC ? 1517-5 is a micropower charge pump DC/DC
converter that produces a regulated 5V output. The input
voltage range is 2.7V to 5V. 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
Cellular Telephones
Battery-Operated Equipment
APPLICATIO N S
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short circuit from V OUT to GND. The device is available in a
5-pin SOT-23 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
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Local Power Supplies
Handheld Instruments
PCMCIA Supplies
TYPICAL APPLICATIO N
Typical Output Voltage vs Output Current
5.2
5
0.1 μ F
4
5.1
T A = 25 ° C
C1 = 0.1 μ F
C OUT = 6.8 μ F
C1 –
LTC1517-5
C1 +
V IN
GND
V OUT
5.0
V IN
2.7V TO 5V
3.3 μ F
1
2
3
6.8 μ F
V OUT = 5V ± 4%
I OUT = 10mA (V IN ≥ 2.7V)
I OUT = 20mA (V IN ≥ 3V)
4.9
V IN = 2.7V V IN = 3V V IN = 3.3V
1517 TA01
4.8
0
20
40
60
80
OUTPUT CURRENT (mA)
1517 TA02
1
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