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ANALOG DEVICES LTC7817IUHF#WPBF
DC/DC Controller, Synchronous Boost, Synchronous Buck, 4.5 to 40V Supply, 3 Output, 100% Duty Cycle
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC7817IUHF#WPBF
- Order Code:
- 4033922
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- Technical Datasheet:
- LTC7817IUHF#WPBF Datasheet
- ECAD / MCAD
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Product Overview
LTC®7817 is a high performance triple output (buck/buck/boost) synchronous DC/DC switching regulator controller that drives all N-channel power MOSFET stages. Its constant frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. This operates from a wide 4.5V to 40V input supply range. When biased from the output of the boost converter or another auxiliary supply, this can operate from an input supply as low as 1V after start-up. The very low no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. This features a precision 0.8V reference for the bucks, 1.2V reference for the boost and a power good output indicator. Typical applications are automotive and transportation, industrial, military/avionics.
- Outputs remain in regulation through cold crank down to 1V input supply voltage
- RSENSE or DCR current sensing, very low buck dropout operation is 99% duty cycle
- PassThru™ operation: 100% duty cycle for boost synchronous MOSFET
- Selectable continuous, pulse-skipping, or low ripple burst mode operation at light loads
- Bias input supply operating voltage range from 4.5 to 40V (TA=25°C, VBIAS=12V)
- VBIAS shutdown current is 1.5µA typical (RUN1, 2, 3=0V, TA=25°C, VBIAS=12V)
- Programmable frequency is 100KHz typical (RFREQ=374Kohm, PLLIN/MODE=DC voltage, TA=25°C)
- 38-lead plastic QFN package
- Temperature rating range from -40°C to 125°C
- AEC-Q100 qualified for automotive applications
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Product Information
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- Current Mode Control
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- 4.5V
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- 40V
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- 3Outputs
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- 100%
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- QFN-EP
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- 38Pins
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- 3MHz
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- Synchronous Boost, Synchronous Buck, Synchronous Buck
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- -40°C
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- 125°C
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- -
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- AEC-Q100
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- MSL 3 - 168 hours
Technical Documents (1)
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52 deliver in 3-4 business days from our UK warehouse
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¥1,909.23
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¥2,100.15
Inc. JCT)
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| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
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| 1+ | ¥1,909.23 (¥2,100.15) | ( ) |
| 10+ | ¥1,416.77 (¥1,558.45) | ( ) |
| 52+ | ¥1,272.55 (¥1,399.81) | ( ) |
| 104+ | ¥1,181.22 (¥1,299.34) | ( ) |
| 260+ | ¥1,123.80 (¥1,236.18) | ( ) |
| 520+ | ¥1,089.35 (¥1,198.29) | ( ) |
| 1040+ | ¥1,064.20 (¥1,170.62) | ( ) |
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