DocumentationDatasheet
Design Note
Reliability Data
Product Selector Card
- Buck-Boost DC/DC μModule Power Products
- Constant-Voltage, Constant-Current DC/DC μModule Products
- High Voltage DC/DC μModule Products
- SnPb (Tin-Lead) BGA Packages μModule Power Products
- μModule Power Products Catalog
Press Release
cad_symbol
ltspice
- LTM8055 Demo Circuit - High Efficiency Buck-Boost Regulator with Accurate Current Limit & Output Current Monitor (5-36V to 12V @ 6A)
- LTM8055 Demo Circuit - Paralleled Synchronous Buck-Boost Regulator with Accurate Current Limit (7-36V to 12V @ 12A)
LTpowerCAD
Features
- Complete Buck-Boost Switch Mode Power Supply
- VOUT Equal, Greater, Less Than VIN
- Wide Input Voltage Range: 5V to 36V
- 12V/3A Output from 6VIN
- 12V/6A Output from 12VIN
- 12V/8.5A Output from 24VIN
- Up to 97.5% Efficient
- Adjustable Input and Output Average Current Limits
- Input and Output Current Monitors
- Parallelable for Increased Output Current
- Wide Output Voltage Range: 1.2V to 36V
- Selectable Switching Frequency: 100kHz to 800kHz
- Synchronization from 200kHz to 700kHz
- 15mm × 15mm × 4.92mm BGA Package
Typical Application
Description
The LTM®8055 is a 36VIN, buck-boost power module (power module) regulator. Included in the package are the switching controller, power switches, inductor and support components. A resistor to set the switching frequency, a resistor divider to set the output voltage, and input and output capacitors are all that are needed to complete the design. Other features such as input and output average current regulation may be implemented with just a few components. The LTM8055 operates over an input voltage range of 5V to 36V, and can regulate output voltages between 1.2V and 36V. The SYNC input and CLKOUT output allow easy synchronization.
The LTM8055 is housed in a compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8055 is RoHS compliant.
| LTM8054 | LTM8055 | LTM8056 | |
| VIN (Operation) | 36 | 36 | 58 |
| VIN Abs Max | 40 | 40 | 60 |
| VOUT Abs Max | 40 | 40 | 60 |
| IOUT (Peak) 24VIN, 12VOUT | 5.4 | 8.5 | 5.5 |
| Package | 15 × 11.25mm × 3.42mm BGA | 15 × 15mm × 4.92mm BGA Pin and Function Compatible | |
15mm x 15mm x 4.92mm BGA
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTM8055EY#PBF | BGA | 121 | E | $31.43 | $22.00 |
| LTM8055IY#PBF | BGA | 121 | I | $34.57 | $24.20 |
| LTM8055IY | BGA | 121 | I | $47.14 | $33.00 |
| LTM8055MPY#PBF | BGA | 121 | MP | $66.51 | $46.56 |
| LTM8055MPY | BGA | 121 | MP | $76.67 | $53.67 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC2017A | LTM8055 Demo Board | Buck-Boost μModule Regulator, 5V ≤ VIN ≤ 36V, Vout = 12V @ 6A | $65.00 |