You have entered a value in the highlighted fields below that contain invalid characters. Please revise your selection using valid characters only.
Product may not be an exact match for your search
You previously purchased this product.
View in Order History
ANALOG DEVICES LTC3857EUH#PBF
DC/DC Controller, Synchronous Buck, 4 to 38V Supply, 2 Output, 99.4% Duty Cycle, 900kHz, QFN-EP-32
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3857EUH#PBF
- Order Code:
- 4026519
-
-
Maximum Part Numbers added.
Delete older entries to add more.
- Technical Datasheet:
- LTC3857EUH#PBF Datasheet
- ECAD / MCAD
-
Product Overview
LTC3857 is a high performance dual step-down switching regulator controller. It drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of upto 850KHz. Power loss and noise due to the ESR of the input capacitor ESR are minimized by operating the two controller output stages out of phase. Independent TRACK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode at light loads. It is widely used in application such as automotive always-on systems, battery operated digital devices, distributed DC power systems etc.
- Input supply operating voltage range is 4V to 38V
- RSENSE or DCR current sensing, output overvoltage protection
- OPTI-LOOP® compensation minimizes COUT
- Selectable current limit, very low dropout operation: 99% duty cycle
- Adjustable output voltage soft-start or tracking
- Power good output voltage monitors
- Internal LDO powers gate drive from VIN or EXTVCC
- Low operating current (one channel on) is 50μA typ at (RUN1 = 5V and RUN2 = 0V, VFB1 = 0.83V)
- Shutdown current is 8μA typical at (RUN1, 2 = 0V, TA = 25°C)
- Operating junction 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
Want to see similar products? Simply select your required attributes below and hit the button ×
- :
- Current Mode Control
- :
- 4V
- :
- 38V
- :
- 2Outputs
- :
- 99.4%
- :
- QFN-EP
- :
- 32Pins
- :
- 900kHz
- :
- Synchronous Buck (Step Down)
- :
- -40°C
- :
- 125°C
- :
- -
- :
- -
- :
- MSL 1 - Unlimited
Technical Documents (1)
43 In stock Need more?
43 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
×
You can reserve stock now just order your desired quantity and checkout as normal. The quantity that cant be dispatched now will be placed on back order and sent as soon as we get a delivery from our supplier. You only get charged when the products are dispatched to you.
Extra stock is available upon order to the Supplier Lead Time which is approximately 4/7/25
43 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
¥2,043.04
(
¥2,247.34
Inc. JCT)
Pricing is unavailable. Please contact customer services.
- Price for:
- Each
Multiple: 1 Minimum: 1
- 1+
- 10+
- 73+
- 146+
- 292+
- 511+
- 1022+
| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
|---|---|---|
| 1+ | ¥2,043.04 (¥2,247.34) | ( ) |
| 10+ | ¥1,442.97 (¥1,587.27) | ( ) |
| 73+ | ¥1,288.47 (¥1,417.32) | ( ) |
| 146+ | ¥1,115.86 (¥1,227.45) | ( ) |
| 292+ | ¥1,032.28 (¥1,135.51) | ( ) |
| 511+ | ¥981.39 (¥1,079.53) | ( ) |
| 1022+ | ¥947.03 (¥1,041.73) | ( ) |
| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
|---|
Pricing is unavailable. Please contact customer services.
Total Price:
Total Price: ( )
Total Price: --
Filter Tool