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Part Number: LTC3026
Description:
The LTC (R)3026 is a very low dropout (VLDOTM ) ...
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LTC3026
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DataSheet
General Description
LTC3026 General Description
The LTC (R)3026 is a very low dropout (VLDOTM ) linear regulator that can operate at input voltages down to 1.14V. The device is capable of supplying 1.5A of output current with a typical dropout voltage of only 100mV. To allow operation at low input voltages the LTC3026 includes a boost converter that provides the necessary headroom for the internal LDO circuitry.
Output current comes directly from the input supply to maximize efficiency. The boost converter requires only a small chip inductor and ceramic capacitor for operation. Additionally, the boosted output voltage of one LTC3026 can supply the boost voltage for other LTC3026s, thus requiring a single inductor for multiple LDOs. A user supplied boost voltage can be used eliminating the need for an inductor altogether.
The LTC3026 regulator is stable with 10F or greater ceramic output capacitors. The device has a low 0.4V reference voltage which is used to program the output voltage via two external resistors. The device also has internal current limit, overtemperature shutdown, and reverse output current protection. The LTC3026 is avail- able in a small 10-lead MSOP or low profile (0.75mm) 10-lead 3mm * 3mm DFN package.
LTC3026 Maximum Ratings
V BST to GND ...............................................0.3V to 6V
V IN to GND..................................................0.3V to 6V
SHDN, and ADJ to GND................ 0.3V to (V IN + 0.3V)
Output Short-Circuit Duration..........................Indefinite
Operating Junction Temperature
Range............................................... 40°C to 125°C
Storage Temperature Range............ 65°C to 125°C
Lead Temperature (MSE, Soldering, 10 sec)........300°C
LTC3026 Features
Input Voltage Range:
1.14V to 3.5V (with Boost Enabled)
1.14V to 5.5V (with External 5V Boost)
Low Dropout Voltage: 100mV at IOUT = 1.5A
Adjustable Output Range: 0.4V to 2.6V
Output Current: Up to 1.5A
Excellent Supply Rejection Even Near Dropout
Shutdown Disconnects Load from V IN and VBST
Low Operating Current: IIN = 950 A at VIN = 1.5V
Low Shutdown Current:
IIN < 1A (Typ), IBST = 0.1 A (Typ)
Stable with 10F or Greater Ceramic Capacitors
Short-Circuit, Reverse Current Protected
Overtemperature Protected
Available in 10-Lead MSOP and 10-Lead
(3mm * 3mm) DFN Packages
1.14V to 3.5V (with Boost Enabled)
1.14V to 5.5V (with External 5V Boost)
Low Dropout Voltage: 100mV at IOUT = 1.5A
Adjustable Output Range: 0.4V to 2.6V
Output Current: Up to 1.5A
Excellent Supply Rejection Even Near Dropout
Shutdown Disconnects Load from V IN and VBST
Low Operating Current: IIN = 950 A at VIN = 1.5V
Low Shutdown Current:
IIN < 1A (Typ), IBST = 0.1 A (Typ)
Stable with 10F or Greater Ceramic Capacitors
Short-Circuit, Reverse Current Protected
Overtemperature Protected
Available in 10-Lead MSOP and 10-Lead
(3mm * 3mm) DFN Packages
LTC3026 Typical Application
High Efficiency Linear Regulator
Post Regulator for Switching Supplies
Microprocessor Supply
Post Regulator for Switching Supplies
Microprocessor Supply
LTC3026 Connection Diagram
LTC3026
PDF/DataSheet Download
- Datasheet: LTC3026
- File Size: 206649 KB
- Manufacturer: Linear
- Click here to Download
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