LTC3838EFE#PBF External Power Switch Buck Controllers by Analog Devices

External Power Switch Buck Controllers
Status: Production
Series: LTC3838
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The LTC3838 is a dual, PolyPhase® synchronous step-down DC/DC switching regulator controller. Two independent channels drive all N-channel power MOSFETs. The controlled on-time, valley current mode control architecture allows for fast transient response and constant frequency switching in steady-state operation, independent of VIN, VOUT and load current. Its load-release transient detection feature significantly reduces overshoot at low output voltages.Differential output voltage sensing, along with a precision internal reference, offers an accurate ±0.67% output regulation on Channel 1, even if the remote output ground deviates from local ground by ±500mV. The second channel can either provide an independent ±1% output, or together with the first channel of this controller, serve as one of the PolyPhase channels for a single-output voltage.The switching frequency can be programmed from 200kHz to 2MHz with an external resistor, and can be synchronized to an external clock. Very low tON and tOFF times allow for near 0% and near 100% duty cycles, respectively. Voltage tracking soft start-up and multiple safety features are provided.See below for a comparison of LTC3838, LTC3838-1 and LTC3838-2. Part Number Description LTC3838   ±0.67% Differential Output Voltage Accuracy Over Temperature on Channel 1, ±1% Output Regulation on Channel 2, Separate Per Channel 30mV to 100mV Current Sense Range Controls LTC3838-1   ±0.67% Differential Output Voltage Accuracy Over Temperature on Both Channel 1 and Channel 2, Single Pin 30mV/60mV Current Sense Range Controls LTC3838-2 ±0.67% Differential Output Voltage Accuracy With Internal Reference on Channel 1, ±4mV Differential with External Reference Voltage on Channel 2, Fixed 30mV Current Sense Range

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Prices starting from US$4.26

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Analog Devices
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Rochester Electronics
from US$4.48
219
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TME
from US$8.09
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Last 6 months Inventory & Pricing History

Alternative Descriptions

2x, Fast, Acc Step- Down DC/DC | Analog Devices
PMIC | TME
DC/DC Cntrlr Dual-OUT Step Down 2000kHz 38-Pin TSSOP EP Tube | Richardson RFPD

LTC3838EFE#PBF Semiconductors - ICs by Linear Technology

BUCK DUAL 38V 0.6VTO 5.5VOUT 38TSSOP

Electronic & Electrical Components>Semiconductors - ICs>Power Management
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 38V
No. of Outputs 2 Output, 2Outputs
Duty Cycle (%) 100%
Controller IC Case Style TSSOP
No. of Pins 38Pins
Switching Frequency 2MHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 3838
Operating Temperature Range -40°C to +125°C
Output Current 25A
Primary Input Voltage 38V

Last 6 months Inventory & Pricing History

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LTC3838EFE#PBF?

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What category does LTC3838EFE#PBF fall under?

The LTC3838EFE#PBF is listed under External Power Switch Buck Controllers.

Can I view similar or alternative parts?

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Is the LTC3838EFE#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices, Rochester Electronics, TME and Richardson RFPD have stock available or on a lead time for LTC3838EFE#PBF.

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