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ANALOG DEVICES LTC3850EUF#TRPBF
DC/DC Controller, Synchronous Buck, 4V to 24V Supply, 2 Output, 97.2% Duty Cycle, 780kHz, QFN-EP-28
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3850EUF#TRPBF
- Order Code:
- 4026496
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- Technical Datasheet:
- LTC3850EUF#TRPBF Datasheet
- ECAD / MCAD
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Product Overview
LTC3850 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and supply noise are minimized by operating the two controller output stages out of phase. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Independent TK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode® operation, pulse-skipping mode, or continuous inductor current mode and allows the IC to be synchronized to an external clock. Typical applications are notebook and Palmtop computers, portable instruments, battery-operated digital devices, DC power distribution systems.
- Dual, 180° phased controllers reduce required input capacitance and power supply induced noise
- High efficiency is up to 95%
- RSENSE or DCR current sensing, ±1% 0.8V output voltage accuracy
- Phase-lockable fixed frequency 250kHz to 780kHz
- Supports pre-biased output, dual N-channel MOSFET synchronous drive
- Adjustable soft-start current ramping or tracking, foldback output current limiting
- Power good output voltage monitor
- Regulated feedback voltage range from 0.792 to 0.808V at ITH1,2 voltage = 1.2V;TA = 25°C
- 28-lead (4mm × 4mm) plastic QFN package
- Temperature rating range from -40 to 85°C
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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- 4V
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- 24V
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- 2Outputs
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- 97.2%
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- QFN-EP
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- 28Pins
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- 780kHz
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- Synchronous Buck (Step Down)
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- -40°C
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- 85°C
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- -
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- -
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- MSL 1 - Unlimited
Technical Documents (1)
Packaging type
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4,811 deliver in 3-4 business days from our UK warehouse
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¥1,217.95
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¥1,339.75
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| 1+ | ¥1,217.95 (¥1,339.75) | ( ) |
| 10+ | ¥946.77 (¥1,041.45) | ( ) |
| 25+ | ¥837.05 (¥920.76) | ( ) |
| 100+ | ¥713.22 (¥784.54) | ( ) |
| 250+ | ¥653.65 (¥719.02) | ( ) |
| 500+ | ¥617.60 (¥679.36) | ( ) |
| 2500+ | ¥567.25 (¥623.98) | ( ) |
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