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參數(shù)資料
| 型號： | LTC3240EDC-3.3 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.45 A SWITCHED CAPACITOR REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, MO-229WCCD-2, DFN-6 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 203K |
| 代理商： | LTC3240EDC-3.3 |
LTC3240-3.3/LTC3240-2.5
1
3240fb
■ Step-Up/Step-Down Charge Pumps Generate Fixed
3.3V or 2.5V Outputs
■ VIN Range: 1.8V to 5.5V
■ Output Current up to 150mA
■ Automatic Mode Switching
■ Constant Frequency (1.2MHz) Operation in
Step-Up Mode
■ Low Dropout Regulator Operation in
Step-Down Mode
■ Low No-Load Quiescent Current: IQ = 65A
■ Built-In Soft-Start Reduces Inrush Current
■ Shutdown Disconnects Load from Input
■ Shutdown Current < 1A
■ Short-Circuit/Thermal Protection
■ Available in a 6-Lead (2mm
× 2mm) DFN Package
3.3V/2.5V Step-Up/
Step-Down Charge Pump
DC/DC Converter
The LTC3240-3.3/LTC3240-2.5 are step-up/step-down
charge pump DC/DC converters that produce a xed
regulated output voltage of 3.3V or 2.5V over a wide input
voltage range (1.8V to 5.5V).
With input voltages greater than the regulated output
voltage the LTC3240 operates as a low dropout regulator.
Once the input voltage drops within 100mV of the regulated
output voltage the part automatically switches to step-up
mode. In step-up mode the LTC3240 operates as a constant
frequency (1.2MHz) doubling charge pump.
The LTC3240-3.3/LTC3240-2.5 feature low no load operat-
ing current (65A typical) and ultralow operating current
in shutdown (<1A). Built-in soft-start circuitry prevents
excessive inrush current during start-up. Thermal shut-
down and current-limit circuitry allow the parts to survive
a continuous short-circuit from VOUT to GND.
The LTC3240-3.3/LTC3240-2.5 require only three tiny
external ceramic capacitors for an ultrasmall application
footprint. The LTC3240-3.3/LTC3240-2.5 are available in a
6-pin (2mm
× 2mm) DFN package.
■ 2 AA to 2.5V
■ 2-3 AA/Li-Ion to 3.3V
■ Low Power Supplies for Cameras, I/O Supplies,
Audio, PC Cards, Misc. Logic, etc., in a Wide Variety
of Handheld Products
Output Voltage vs Input Voltage (Full Range)
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
OFF ON
VIN
GND
SHDN
VOUT
C–
C+
LTC3240-3.3
1
F
4.7
F
1
F
3.3V
IOUT = 150mA
2.7V TO 4.5V
3240 TA01a
Li-Ion OR
3-CELL NiMH
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6411531.
Li-Ion to 3.3V at Up to 150mA
INPUT VOLTAGE (V)
1.7
OUTPUT
VOLTAGE
(V)
3.30
3.40
5.7
3240 TA01b
3.20
3.10
2.7
3.7
4.7
2.2
3.2
4.2
5.2
3.50
3.25
3.35
3.15
3.45
IOUT = 30mA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3245 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump |
| LTC3245EDE#PBF | 制造商:Linear Technology 功能描述:Charge Pump STPUP/STPDN 2.5V to 5V/3.3V/5V 250mA 12-Pin DFN EP 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG .25A 12DFN 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, FIXED/ADJ, 450KHZ, DFN-12; Primary Input Voltage:38V; No. of Outputs:1; Output Current:250mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:12-DFN ;RoHS Compliant: Yes |
| LTC3245EDE#TRPBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG .25A 12DFN 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, FIXED/ADJ, 450KHZ, DFN-12; Primary Input Voltage:38V; No. of Outputs:1; Output Current:250mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:12-DFN ;RoHS Compliant: Yes |
| LTC3245EMSE#PBF | 制造商:Linear Technology 功能描述:Charge Pump STPUP/STPDN 2.5V to 5V/3.3V/5V 250mA 12-Pin MSOP EP 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG .25A 12MSOP 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, FIXED/ADJ, 450KHZ, MSOP-12; Primary Input Voltage:38V; No. of Outputs:1; Output Current:250mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:12-MSOP ;RoHS Compliant: Yes |
| LTC3245EMSE#TRPBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG .25A 12MSOP 制造商:Linear Technology 功能描述:DC-DC CONV, BUCK/BOOST, FIXED/ADJ, 450KHZ, MSOP-12; Primary Input Voltage:38V; No. of Outputs:1; Output Current:250mA; No. of Pins:12; Operating Temperature Min:-40C; Operating Temperature Max:125C; Package / Case:12-MSOP ;RoHS Compliant: Yes |
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