LTC1629
PRODUCTIONPolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator
- Part Models
- 8
- 1ku List Price
- Starting From $10.85
Overview
- Dual Controller Operates from One to Twelve Phases
- Reduces Required Input Capacitance and Power Supply Induced Noise
- Current Mode Control Ensures Current Sharing
- Phase-Lockable Fixed Frequency: 150kHz to 300kHz
- 1.8MHz Effective Switching Frequency
- True Remote Sensing Differential Amplifier
- OPTI-LOOP™ Compensation Reduces COUT
- ±1% Output Voltage Accuracy
- Power Good Output Voltage Monitor (LTC1629-PG)
- Wide VIN Range: 4V to 36V Operation
- Very Low Dropout Operation: 99% Duty Cycle
- Adjustable Soft-Start Current Ramping
- Internal Current Foldback Plus Shutdown Timer
- Overvoltage Soft-Latch Eliminates Nuisance Trips
- Micropower Shutdown
- Available in 28-Lead SSOP Package
The LTC1629/LTC1629-PG are multiple phase, dual, synchronous step-down current mode switching regulator controllers that drive N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The PolyPhase™ controller drives its two output stages out of phase at frequencies up to 300kHz to minimize the RMS ripple currents in both input and output capacitors. The output clock signal allows expansion for up to 12 evenly phased controllers for systems requiring 15A to 200A of output current. The multiple phase technique effectively multiplies the fundamental frequency by the number of channels used, improving transient response while operating each channel at an optimum frequency for efficiency. Thermal design is also simplified.
An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required for high current applications.
A RUN/SS pin provides both soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latch-off is disabled. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC1629-PG includes a power good output pin that replaces the AMPMD control pin of the LTC1629.
Applications
- Desktop Computers
- Internet Servers
- Large Memory Arrays
- DC Power Distribution Systems
Documentation
Data Sheet 1
User Guide 3
Application Note 1
Design Note 5
Technical Articles 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 |
|---|---|---|---|
| LTC1629CG#PBF | 28-Lead SSOP | ||
| LTC1629CG#TRPBF | 28-Lead SSOP | ||
| LTC1629CG-PG#PBF | 28-Lead SSOP | ||
| LTC1629CG-PG#TRPBF | 28-Lead SSOP | ||
| LTC1629IG#PBF | 28-Lead SSOP | ||
| LTC1629IG#TRPBF | 28-Lead SSOP | ||
| LTC1629IG-PG#PBF | 28-Lead SSOP | ||
| LTC1629IG-PG#TRPBF | 28-Lead SSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG |
||
| LTC1629CG#PBF | PRODUCTION | |
| LTC1629CG#TRPBF | PRODUCTION | |
| LTC1629CG-PG#PBF | PRODUCTION | |
| LTC1629CG-PG#TRPBF | PRODUCTION | |
| LTC1629IG#PBF | PRODUCTION | |
| LTC1629IG#TRPBF | PRODUCTION | |
| LTC1629IG-PG#PBF | PRODUCTION | |
| LTC1629IG-PG#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC1629
- LTC1629-6
- LTC1629-PG
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
LTC1709-9EG / LTC1629CG | 4-Phase High Current Power Supply, VIN = 12V, VOUT = 1.1V~1.8V @ 60A
Resources
LTC1709-9EG / LTC1629CG | 4-Phase High Current Power Supply, VIN = 12V, VOUT = 1.1V~1.8V @ 60A
Resources
LTC1629CG | 6 Phase, Very High Current, Low Voltage Power Supply, 5 to 12VIN, 3.3VOUT @ 90A or 5VOUT @ 60Amps
Resources
LTC1629CG | 6 Phase, Very High Current, Low Voltage Power Supply, 5 to 12VIN, 3.3VOUT @ 90A or 5VOUT @ 60Amps
Resources
LTC1629CG | Polyphase DC-DC Converter, 5 to 13VIN, 3.3VOUT @ 20A
Resources
LTC1629CG | Polyphase DC-DC Converter, 5 to 13VIN, 3.3VOUT @ 20A
Resources
LTC1629CG LTC1628-SYNC | PolyPhase Dual Output High Current Power Supply, 5V to 14VIN, 1.6VOUT @ 52A Max., 2.5VOUT @ 15A Max (Thru-Hole Input Caps)
Resources
LTC1629CG LTC1628-SYNC | PolyPhase Dual Output High Current Power Supply, 5V to 14VIN, 1.6VOUT @ 52A Max., 2.5VOUT @ 15A Max (Thru-Hole Input Caps)
Resources
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