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LM2676SX-5.0 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Anterwell Technology Ltd.

LM2676SX-5.0 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Brand Name : Anterwell

Model Number : LM2676SX-5.0

Certification : new & original

Place of Origin : original factory

MOQ : 10pcs

Price : Negotiate

Payment Terms : T/T, Western Union, Paypal

Supply Ability : 8200pcs

Delivery Time : 1 day

Packaging Details : Please contact me for details

datasheet : pls contact us

packing : reel

factory packing quantity : 500

skype : asiamicro3

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LM2676SX-5.0 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

FEATURES

Efficiency Up to 94%

Simple and Easy to Design with (Using Off-The-Shelf External Components)

150 mΩ DMOS Output Switch

3.3V, 5V and 12V Fixed Output and Adjustable (1.2V to 37V) Versions

50μA Standby Current When Switched OFF

±2% Maximum Output Tolerance Over Full

Line and Load Conditions

Wide Input Voltage Range: 8V to 40V

260 KHz Fixed Frequency Internal Oscillato

0 to +125°C Operating Junction Temperature Range

APPLICATIONS

Simple to Design, High Efficiency (>90%) Step- Down Switching Regulators

Efficient System Pre-Regulator for Linear

Voltage Regulators

Battery Chargers

DESCRIPTION

The LM2676 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 3A 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 3.3V, 5V and 12V and an adjustable output version.

The SIMPLE SWITCHER concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260KHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2676 are available from several Range manufacturers to greatly simplify the design process.

The LM2676 series also has built in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50μA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

Typical Application

LM2676SX-5.0 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

LM2676SX-5.0 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Absolute Maximum Ratings(1)(2)

Input Supply Voltage 45V
ON/OFF Pin Voltage −0.1V to 6V
Switch Voltage to Ground(3) −1V to V
Boost Pin Voltage VSW + 8V
Feedback Pin Voltage −0.3V to 14V
Power Dissipation Internally Limited
ESD(4) 2 kV
Storage Temperature Range −65°C to 150°C
Soldering Temperature Wave 4 sec, 260°C
Infrared 10 sec, 240°C
Vapor Phase 75 sec, 219°C

Operating Ratings

Supply Voltage 8V to 40V
Junction Temperature Range (TJ ) −40°C to 125°C

Electrical Characteristics

LM2676-3.3 Limits appearing in bold type face apply over the entire junction temperature range of operation, −40°C to 125°C. Specifications appearing in normal type apply for TA = TJ = 25°C.

Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units
VOUT Output Voltage VIN = 8V to 40V, 100mA ≤ IOUT ≤ 3A 3.3 3.234/3.201 3.366/3.399 V
η Efficiency VIN = 12V, ILOAD = 3A 86 %

(1) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. (2) All limits are ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are ensured via correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

LM2676-5.0

Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units
VOUT Output Voltage VIN = 8V to 40V, 100mA ≤ IOUT ≤ 3A 5.0 4.900/4.850 5.100/5.150 V
η Efficiency VIN = 12V, ILOAD = 3A 88 %

(1) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. (2) All limits are ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are ensured via correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

LM2676-12

Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units
VOUT Output Voltage VIN = 15V to 40V, 100mA ≤ IOUT ≤ 3A 12 11.76/11.64 12.24/12.36 V
η Efficiency VIN = 15V to 40V, 100mA ≤ IOUT ≤ 3A 94 %

(1) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. (2) All limits are ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are ensured via correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

LM2676-ADJ

Symbol Parameter Conditions Typ(1) Min(2) Max(2) Units
VFB Feedback Voltage

VIN = 8V to 40V, 100mA ≤ IOUT ≤ 3A

VOUT Programmed for 5V

1.21 1.186/1.174 1.234/1.246 V
η Efficienc VIN = 12V, ILOAD = 3A 88 %

(1) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. (2) All limits are ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are ensured via correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).


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