Overview
The LTM8049IY, produced by Analog Devices Inc., is a dual SEPIC or Inverting µModule (power module) DC/DC converter. This device integrates power devices, inductors, control circuitry, and passive components, making it a comprehensive solution for various power supply needs. The LTM8049IY is designed to be highly configurable, allowing each of the two outputs to be easily set up as either a SEPIC or inverting converter by grounding the appropriate output rail. The module requires minimal external components, such as input and output capacitors and small resistors, to complete the design. It is packaged in a thermally enhanced, compact 15mm × 9mm over-molded Ball Grid Array (BGA) package, suitable for automated assembly by standard surface mount equipment.
Key Specifications
| Parameter | Specification |
|---|---|
| Input Voltage Range | 2.6V to 20V |
| Output Voltage Range | 2.5V to 24V or –2.5V to –24V |
| Maximum Load Current | 1A at 5VOUT from 12VIN |
| Switching Frequency | 200kHz to 2.5MHz (selectable) |
| Package Type | 77-lead BGA |
| Package Dimensions | 15mm × 9mm × 2.42mm |
| Operating Temperature Range | –40°C to 125°C |
| Line Regulation | 0.1% typical (4 ≤ VIN ≤ 20V, IOUT = 0.6A) |
| Load Regulation | 0.3% typical (0 ≤ IOUT ≤ 1A) |
| VIN Quiescent Current | 2µA maximum at (VRUN = 0V) |
Key Features
- Dual SEPIC or Inverting topology, configurable by grounding the appropriate output rail
- Wide input voltage range: 2.6V to 20V
- Power good outputs for event-based sequencing
- User-configurable undervoltage lockout
- Selectable switching frequency: 200kHz to 2.5MHz
- Low profile 15mm × 9mm × 2.42mm surface mount BGA package
- RoHS compliant package with gold pad finish
- Soft-start circuitry for gradual ramp-up of switch current
Applications
- Battery-powered regulators
- Local negative voltage regulators
- Low noise amplifier power supplies
- General-purpose switch-mode power supplies
Q & A
- What is the input voltage range of the LTM8049IY?
The input voltage range is 2.6V to 20V.
- What are the possible output voltage ranges for the LTM8049IY?
The output voltage range is 2.5V to 24V or –2.5V to –24V.
- What is the maximum load current for the LTM8049IY?
The maximum load current is 1A at 5VOUT from 12VIN.
- Can the switching frequency of the LTM8049IY be adjusted?
Yes, the switching frequency is selectable from 200kHz to 2.5MHz.
- What is the package type and dimensions of the LTM8049IY?
The package type is a 77-lead BGA, with dimensions of 15mm × 9mm × 2.42mm.
- What is the operating temperature range of the LTM8049IY?
The operating temperature range is –40°C to 125°C.
- Does the LTM8049IY support power good outputs for sequencing?
Yes, it supports power good outputs for event-based sequencing.
- Can the undervoltage lockout be configured by the user?
Yes, the undervoltage lockout is user-configurable.
- What is the typical line regulation of the LTM8049IY?
The typical line regulation is 0.1% (4 ≤ VIN ≤ 20V, IOUT = 0.6A).
- What is the typical load regulation of the LTM8049IY?
The typical load regulation is 0.3% (0 ≤ IOUT ≤ 1A).
