SC2672STRT, SC2674B4P, SC2677 Selling Leads, Datasheet
MFG:SEMTECH Package Cooled:SOP16 D/C:0835+
SC2672STRT, SC2674B4P, SC2677 Datasheet download
Part Number: SC2672STRT
MFG: SEMTECH
Package Cooled: SOP16
D/C: 0835+
SC2672STRT, SC2674B4P, SC2677
- Table of contents:
Info of SC2672STRT
Info of SC2674B4P
Info of SC2677
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About SC200.....5. Series
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Datasheet: SC200.....5. Series
File Size: 156653 KB
Manufacturer:
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About SC200.....5. Series
PDF/DataSheet Download
Datasheet: SC200.....5. Series
File Size: 156653 KB
Manufacturer:
Download : Click here to Download
About SC2677EVB-1
PDF/DataSheet Download
Datasheet: SC2677EVB-1
File Size: 167178 KB
Manufacturer: SEMTECH [Semtech Corporation]
Download : Click here to Download
SC2677 General Description
The SC2677 is a versatile 2 phase, synchronous, voltage mode PWM controller that may be used in two distinct ways. First, the SC2677 is ideal for applications where point of use output power exceeds any single input power budget. Alternatively, the SC2677 can be used as a dual switcher. The SC2677 features a temperature compensated voltage reference, an under voltage lockout over current protection and internal level-shifted, highside drive circuitry.
In current sharing configuration, the SC2677 can produce a single output voltage from two separate voltage sources (which can be different voltage levels) while maintaining current sharing between the channels. Current sharing is programmable to allow loading each input supply as required by the application.
In dual switcher configuration, two feedback paths are provided for independent control of the separate outputs.The device will provide a regulated output from flexibly configured inputs (3.3V, 5V, 12V), provided 5V is present for VCC.The phasing between the two switchers is adjustable to minimize the input and output ripple.
SC2677 Maximum Ratings
| Parameter | Symbol | Limits | Units |
| VCC to GND | VIN | -0.3 to 15 | V |
| PGND to GND | ± 1 | V | |
| BST1, BST2 to GND | -0.3 to 20 | V | |
| BSTC to GND | -0.3 to 20 | V | |
| -IN1, +/-IN2 to GND | 7 | V | |
| COMP1, COMP2 to GND | 7 | V | |
| DH1, DH2 to GND | -0.3 to 20 | V | |
| DL1, DL2 to GND | -0.3 to BSTC + 0.3 | V | |
| -3 peak (50nS) (1) | V | ||
| PWRGD to GND | VCC + 0.3 | V | |
| PHASING | 7 | V | |
| SS/ENA to GND | -0.3 to 7 | V | |
| Thermal Resistance Junction to Case | JC | 17 | °C/W |
| Thermal Resistance Junction to Ambient | JA | 90 | °C/W |
| Operating Ambient Temperature Range | TA | 0 to 70 | °C |
| Operating Junction Temperature Range | TJ | 0 to 125 | °C |
| Storage Temperature Range | TSTG | -65 to +150 | °C |
| Lead Temperature (Soldering) 10 sec | TLEAD | 300 | °C |
SC2677 Features
300kHz to 1MHz externally programmable frequency operation
Soft Start and Enable function
Power Good output provided
Under voltage short circuit protection
Phase-shifted switchers minimize ripple
High efficiency operation, >90%
Programmable output(s) as low as 0.5V
Industrial temperature range
TSSOP-20 package
Bias voltage as low as 4.5V
Adjustable phase shift between channels
Soft Start and Enable function
Power Good output provided
Under voltage short circuit protection
Phase-shifted switchers minimize ripple
High efficiency operation, >90%
Programmable output(s) as low as 0.5V
Industrial temperature range
TSSOP-20 package
Bias voltage as low as 4.5V
Adjustable phase shift between channels
SC2677 Typical Application
Graphics cards
Peripheral add-in card
Dual-Phase power supply
Power supplies requiring two outputs
SC2677 Connection Diagram
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