LM2677T-3.3/NOPB
ActiveTexas Instruments
SIMPLE SWITCHER HIGH EFFICIENCY 5A STEP-DOWN VOLTAGE REGULATOR WITH SYNC
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LM2677T-3.3/NOPB
ActiveTexas Instruments
SIMPLE SWITCHER HIGH EFFICIENCY 5A STEP-DOWN VOLTAGE REGULATOR WITH SYNC
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | LM2677T-3.3/NOPB | LM2677 Series |
|---|---|---|
| Current - Output | 5 A | 5 A |
| Frequency - Switching | 260 kHz | 260 kHz |
| Function | Step-Down | Step-Down |
| Mounting Type | Through Hole | Surface Mount, Through Hole |
| Number of Outputs | 1 | 1 |
| Operating Temperature [Max] | 125 ¯C | 125 ¯C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output Configuration | Positive | Positive |
| Output Type | 27.03 °C/W | 27.03 °C/W |
| Output Type | - | Adjustable |
| Package / Case | TO-220-7 Formed Leads | TO-263-8, TO-263CA, D2PAK, TO-220-7 Formed Leads, 14-VDFN Exposed Pad |
| Supplier Device Package | TO-220-7 | TO-263 (DDPAK-7), TO-220-7, 14-VSON (5x6) |
| Synchronous Rectifier | False | False |
| Topology | Buck | Buck |
| Voltage - Input (Min) [Min] | 8 V | 8 V |
| Voltage - Output (Max) | - | 37 V |
| Voltage - Output (Min/Fixed) | 3.3 V | 1.21 - 12 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 6.62 | |
| 10 | $ 5.95 | |||
| 45 | $ 5.62 | |||
| 135 | $ 4.87 | |||
| 270 | $ 4.62 | |||
| 540 | $ 4.15 | |||
| 1035 | $ 3.50 | |||
| 2520 | $ 3.32 | |||
| Texas Instruments | TUBE | 1 | $ 4.55 | |
| 100 | $ 3.71 | |||
| 250 | $ 2.92 | |||
| 1000 | $ 2.48 | |||
LM2677 Series
SIMPLE SWITCHER HIGH EFFICIENCY 5A STEP-DOWN VOLTAGE REGULATOR WITH SYNC
| Part | Current - Output | Supplier Device Package | Synchronous Rectifier | Topology | Operating Temperature [Max] | Operating Temperature [Min] | Output Configuration | Voltage - Output (Min/Fixed) | Mounting Type | Output Type | Frequency - Switching | Package / Case | Number of Outputs | Voltage - Input (Min) [Min] | Function | Voltage - Output (Max) [Max] | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM2677S-5.0/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-12 | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 12 V | Through Hole | 27.03 °C/W | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SDX-ADJ | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677SX-5.0 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-ADJ | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Through Hole | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677S-3.3/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-3.3 | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Through Hole | 27.03 °C/W | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SX-5.0/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SDX-5.0 | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SD-ADJ | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677SX-12 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 12 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SDX-3.3 | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SX-ADJ | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677T-3.3/NOPB | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Through Hole | 27.03 °C/W | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-12/NOPB | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 12 V | Through Hole | 27.03 °C/W | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SDX-12/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 12 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677S-ADJ | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677SD-12 | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 12 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-5.0/NOPB | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 5 V | Through Hole | 27.03 °C/W | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SX-3.3 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SD-12/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 12 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677T-ADJ/NOPB | 5 A | TO-220-7 | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Through Hole | 260 kHz | TO-220-7 Formed Leads | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677S-12 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 12 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SD-5.0/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SD-ADJ/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677S-ADJ/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677SD-3.3/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677S-5.0 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 5 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SX-ADJ/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | 37 V | Adjustable | ||
Texas Instruments LM2677SX-3.3/NOPB | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677S-3.3 | 5 A | TO-263 (DDPAK-7) | Buck | 125 ¯C | -40 °C | Positive | 3.3 V | Surface Mount | 27.03 °C/W | 260 kHz | D2PAK, TO-263-8, TO-263CA | 1 | 8 V | Step-Down | |||
Texas Instruments LM2677SDX-ADJ/NOPB | 5 A | 14-VSON (5x6) | Buck | 125 ¯C | -40 °C | Positive | 1.21 V | Surface Mount | 260 kHz | 14-VDFN Exposed Pad | 1 | 8 V | Step-Down | 37 V | Adjustable |
Description
General part information
LM2677 Series
The LM2677 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low on-resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.
The SIMPLE SWITCHER®concept provides for a complete design using a minimum number of external components. The switching clock frequency can be provided by an internal fixed frequency oscillator (260 kHz) or from an externally provided clock in the range of 280 kHz to 400 kHz, which allows the use of physically smaller-sized components. A family of standard inductors for use with the LM2677 are available from several manufacturers to greatly simplify the design process. The external Sync clock provides direct and precise control of the output ripple frequency for consistent filtering or frequency spectrum positioning.
The LM2677 series also has built-in thermal shutdown, current-limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent-current standby condition. The output voltage is ensured to a ±2% tolerance.
Documents
Technical documentation and resources