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ANALOG DEVICES LTC7821EUH#PBF
DC/DC Controller, Synchronous Buck, 10 to 72V Supply, 1 Output, 1.7MHz, QFN-EP-32
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC7821EUH#PBF
- Order Code:
- 4033926
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- Technical Datasheet:
- LTC7821EUH#PBF Datasheet
- ECAD / MCAD
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Product Overview
LTC7821 is a hybrid step-down synchronous controller. It uses a proprietary architecture that merges a soft switching charge pump topology with a synchronous step-down converter to provide superior efficiency and EMI performance compared to traditional switching architectures. In a typical 48V to 12V application, efficiency of greater than 97% is attainable with the device switching at 500KHz. The same efficiency can only be achieved with a traditional controller switching at one-third the frequency. Higher switching frequencies allow the use of smaller inductances that yield faster transient response and smaller solution size. It can be easily paralleled to provide higher output currents with its accurate current sharing capability and frequency synchronization function. It is used in applications such as intermediate bus converters, high current distributed power systems, telecom, datacom, and storage systems, automotive applications etc.
- Wide input voltage range from 10V to 72V, optional external reference
- Soft switching for low noise operation, ±1% output voltage accuracy
- RSENSE or DCR current sensing, programmable CCM, DCM, or Burst Mode® operation
- CLKOUT pin for multiphase operation, short circuit protected
- EXTVCC input for improved efficiency, monotonic output voltage start-up
- Supply current is 0.5mA typ at (TA = 25°C, VIN = VIN-SENSE = 48V)
- Shutdown supply current is 240µA typ at (VRUN = 0V, EXTVCC = 0V)
- Internal VCC regulator is 5.8V typ at (10V
VIN 72V, VEXTVCC = 0V) - Operating temperature range from -40°C to 125°C
- Package style is 32-lead plastic QFN
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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- :
- Constant Frequency
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- 10V
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- 72V
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- 1Outputs
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- -
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- QFN-EP
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- 32Pins
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- 1.7MHz
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- Synchronous Buck (Step Down)
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- -40°C
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- 125°C
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- -
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- -
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- MSL 1 - Unlimited
Technical Documents (1)
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Extra stock is available upon order to the Supplier Lead Time which is approximately 8/11/25
27 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥2,244.66
(
¥2,469.13
Inc. JCT)
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| 1+ | ¥2,244.66 (¥2,469.13) | ( ) |
| 10+ | ¥1,601.37 (¥1,761.51) | ( ) |
| 73+ | ¥1,535.66 (¥1,689.23) | ( ) |
| 146+ | ¥1,469.95 (¥1,616.95) | ( ) |
| 292+ | ¥1,404.24 (¥1,544.66) | ( ) |
| 511+ | ¥1,338.52 (¥1,472.37) | ( ) |
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