Linear Technology LT1959IS8
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $35.96 | $35.96 |
| 15+ | $8.27 | $124.05 |
| 25+ | $8.09 | $202.25 |
| 50+ | $7.64 | $382.00 |
| 100+ | $6.74 | $674.00 |
| N+ | $1.35 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Linear Technology |
| Product Series | |
| Packaging | Bulk | |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck, SEPIC |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.3V |
| Voltage - Input (Max) | 15V |
| Voltage - Output (Min/Fixed) | 1.21V |
| Voltage - Output (Max) | 12.9V |
| Current - Output | 4.5A (Switch) |
| Frequency - Switching | 500kHz |
| Synchronous Rectifier | No |
| Operating Temperature | - |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO |
| ROHS |  |
The LT1959IS8 from Linear Technology is a high-current DC-DC converter designed for Buck and SEPIC topologies. It operates from a 4.3V to 15V input and delivers up to 4.5A of switch current. The output voltage is adjustable from 1.21V to 12.9V, providing flexibility for various applications. With a fixed 500kHz switching frequency, it balances efficiency and component size. Housed in an 8-SOIC package, it is suitable for automotive, industrial, and networking power supplies requiring high output current.
- High Switch Current: The 4.5A internal switch enables high-power outputs without external transistors.
- Wide Input Range: Operates from 4.3V to 15V, covering common 5V, 12V, and automotive supply rails.
- Fixed 500kHz Frequency: Allows for small external components while maintaining high efficiency.
- Versatile Topologies: Supports Buck and SEPIC configurations for flexible design.
High-Current Step-Down Supplies
With a 4.5A switch current, the LT1959 is ideal for generating 3.3V or 5V rails from a 12V input. It can power multiple loads, such as microprocessors, FPGAs, and peripheral drivers in computing and industrial systems.
Automotive Infotainment
In automotive infotainment systems, the LT1959 can step down the 12V battery bus to power audio amplifiers, displays, and control units. Its 4.3V to 15V input range handles typical automotive voltage variations.
Distributed Power Architectures
In systems with a 12V intermediate bus, the LT1959 provides point-of-load conversion for various logic voltages. The 500kHz fixed frequency allows for a compact design with small external components.
SEPIC for Wide Input Variations
When configured as a SEPIC, the LT1959 can regulate an output voltage that is either above or below the input. This is useful in automotive and battery applications where the input voltage can vary widely.
Networking and Telecom
For networking equipment operating from 12V rails, the LT1959 delivers high-efficiency step-down conversion. Its high current capability supports power-hungry ASICs and line cards.
- Q: What type of converter is the LT1959IS8?
- A: It is a DC-DC converter that can be configured as a Buck or SEPIC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 4.3V to 15V.
- Q: What is the output voltage range?
- A: The output voltage is adjustable from 1.21V to 12.9V.
- Q: What is the maximum switch current?
- A: The internal switch is rated for 4.5A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 500kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package.
LT1959IS8.pdf
- Q: What type of converter is the LT1959IS8?
- A: It is a DC-DC converter that can be configured as a Buck or SEPIC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 4.3V to 15V.
- Q: What is the output voltage range?
- A: The output voltage is adjustable from 1.21V to 12.9V.
- Q: What is the maximum switch current?
- A: The internal switch is rated for 4.5A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 500kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package.
