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LTC1148HVCS#PBF
LTC1148HVCS#PBF - Brand New Analog Devices / Linear Technology DC DC Switching Controllers
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
DESCRIPTION
The LTC®1148 series is a family of synchronous stepdown switching regulator
controllers featuring automatic Burst ModeTM operation to maintain high
efficiencies at low output currents. These devices drive external
complementary power MOSFETs at switching frequencies up to 250kHz using a
constant off-time current-mode architecture providing constant ripple current
in the inductor.
The operating current level is user-programmable via an external current sense
resistor. Wide input supply range allows operation from 3.5V* to 18V (20V
maximum). Constant off-time architecture provides low dropout regulation
limited by only the RDS(ON) of the external MOSFET and resistance of the
inductor and current sense resistor.
The LTC1148 series combines synchronous switching for maximum efficiency at
high currents with an automatic low current operating mode, called Burst
Modeoperation, which reduces switching losses. Standby power is reduced to
only 2mW at VIN = 10V (at IOUT = 0). Load currents in Burst Mode operation are
typically 0mA to 300mA.
For operation up to 48V input, see the LTC1149 and LTC1159 data sheets and
Application Note 54.
FEATURES
■ Ultrahigh Efficiency: Over 95% Possible
■ Current-Mode Operation for Excellent Line and Load Transient Response
■ High Efficiency Maintained Over Three Decades of Output Current
■ Low 160µA Standby Current at Light Loads
■ Logic Controlled Micropower Shutdown: IQ < 20µA
■ Wide VIN Range: 3.5V* to 20V
■ Short-Circuit Protection
■ Very Low Dropout Operation: 100% Duty Cycle
■ Synchronous FET Switching for High Efficiency
■ Adaptive Nonoverlap Gate Drives
■ Output Can Be Externally Held High in Shutdown
■ Available in 14-Pin Narrow SO Package
APPLICATIONS
■ Notebook and Palmtop Computers
■ Portable Instruments
■ Battery-Operated Digital Devices
■ Cellular Telephones
■ DC Power Distribution Systems
■ GPS Systems
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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