Products
LT8630
RECOMMENDED FOR NEW DESIGNS100V, 0.6A Synchronous Micropower Step-Down High Efficiency Switching Regulator
- Part Models
- 4
- 1ku List Price
- Starting From $4.96
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Overview
- Ultrawide Input Voltage Range: 3V to 100V
- Boundary Mode Switching for Highest Efficiency
- Output Voltage Range: 0.8V to 60V
- Internal Synchronous Switches
- Burst Mode® Operation:
- 16μA IQ at 12VIN to 5VOUT
- 7μA IQ at 48VIN to 5VOUT
- Low Dropout: 99% Maximum Duty Cycle
- Peak Current Mode Control
- Programmable Undervoltage Lockout
- Power Good Flag
- Flexible Output Voltage Tracking
- Short-Circuit Protection
- Low Shutdown Current: 5μA
- Tolerates Pin Open/Short Faults
- Thermally Enhanced 20-Lead TSSOP with High Voltage Lead Spacing
The LT8630 is a current mode PWM step-down DC/DC converter with internal synchronous switches that provide current for output loads up to 0.6A. The wide input range of 3V to 100V makes the LT8630 suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. Variable frequency boundary mode switching maximizes efficiency across a wide range of input voltages. Low ripple Burst Mode operation enables high efficiency operation down to very low output currents while keeping the output ripple below 5mV. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, while also providing output tracking. A power good flag signals when the output voltage is within ±7.5% of the regulated output. Undervoltage lockout can be programmed using the EN/UV pin. Shutdown mode reduces the total quiescent current to < 5μA. The LT8630 is available in a 20-lead TSSOP package with exposed pad for low thermal resistance and high voltage lead spacing.
APPLICATIONS
- Telecom Supplies
- Distributed Supply Regulation
Documentation
Data Sheet 1
User Guide 1
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT8630EFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8630EFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LT8630IFE#PBF | 20-Lead TSSOP w/ EP | ||
| LT8630IFE#TRPBF | 20-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LT8630EFE#PBF | PRODUCTION | |
| LT8630EFE#TRPBF | PRODUCTION | |
| LT8630IFE#PBF | PRODUCTION | |
| LT8630IFE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT8630
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LT8630 Demo Board | Synchronous Buck, 13V ≤ VIN ≤ 100V, VOUT = 12V @ 600mA