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ANALOG DEVICES LTC3890EUH#TRPBF
DC/DC Controller, Synchronous Buck, 4V to 60V Supply, 2 Output, 99% Duty Cycle, 835kHz, QFN-EP-32
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3890EUH#TRPBF
- Order Code:
- 4026571
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- Technical Datasheet:
- LTC3890EUH#TRPBF Datasheet
- ECAD / MCAD
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Product Overview
LTC3890 is a high performance dual step-down switching regulator DC/DC controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phaselockable frequency of upto 850KHz. Power loss and noise due to the ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase. The 50μA 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 device features a precision 0.8V reference and power good output indicators. Independent TRACK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. It is widely used in application such as automotive always-on systems, battery operated digital devices, distributed DC power systems etc.
- Input voltage range is 4V to 60V, internal LDO powers gate drive from VIN or EXTVCC
- Sleep mode (one channel on) is 50µA typical, shutdown current is 14µA typical
- Output voltage range is 0.8V ≤ VOUT ≤ 24V, no current foldback during start-up
- RSENSE or DCR current sensing, selectable current limit
- Phase-lockable frequency is 75KHz to 850KHz, programmable fixed frequency is 50KHz to 900KHz
- Selectable continuous, pulse-skipping or low ripple burst mode® operation at light loads
- Very low dropout operation: 99% duty cycle, adjustable output voltage soft-start or tracking
- Power good output voltage monitors, output overvoltage protection
- Operating temperature is -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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- Current Mode Control
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- 4V
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- 60V
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- 2Outputs
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- 99%
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- QFN-EP
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- 32Pins
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- 835kHz
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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)
Packaging type
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383 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
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383 deliver in 3-4 business days from our UK warehouse
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¥1,915.49
(
¥2,107.04
Inc. JCT)
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| 1+ | ¥1,915.49 (¥2,107.04) | ( ) |
| 10+ | ¥1,465.62 (¥1,612.18) | ( ) |
| 25+ | ¥1,294.76 (¥1,424.24) | ( ) |
| 100+ | ¥1,103.52 (¥1,213.87) | ( ) |
| 250+ | ¥1,073.74 (¥1,181.11) | ( ) |
| 500+ | ¥1,055.12 (¥1,160.63) | ( ) |
| 2500+ | ¥1,053.19 (¥1,158.51) | ( ) |
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