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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersLM1770SMF
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LM1770SMF - Texas Instruments

Manufacturer Part Number
LM1770SMF
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM1770SMF
ECAD Model
Parts Description
SWITCHING CONTROLLER, VOLTAGE-MO
Package
SC-74A, SOT-753
Data sheet
LM1770SMF.pdf
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Specifications

LM1770SMF Tech Specifications
Texas Instruments - LM1770SMF technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM1770SMF

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply (Vcc/Vdd) 2.8V ~ 5.5V  
Topology Buck  
Synchronous Rectifier Yes  
Supplier Device Package SOT-23-5  
Series -  
Serial Interfaces -  
Package / Case SC-74A, SOT-753  
Package Bulk  
Output Type Transistor Driver  
Output Phases 1  
Product Attribute Attribute Value  
Output Configuration Positive  
Operating Temperature -40°C ~ 125°C (TJ)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Down  
Frequency - Switching 100kHz ~ 1MHz  
Duty Cycle (Max) -  
Control Features -  
Clock Sync No  
Base Product Number LM1770  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Affected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

LM1770SMF

Manufacturer

Texas Instruments

Introduction

The LM1770SMF is a high-performance, synchronous, current-mode DC-DC switching controller designed for step-down (buck) power supply applications.

Product Features and Performance

Wide input voltage range of 2.8V to 5.5V

Output voltage range of 0.6V to 5V

Switching frequency range of 100kHz to 1MHz

Integrated high-side and low-side MOSFET drivers

Synchronous rectification for high efficiency

Current-mode control for fast transient response

Internal soft-start for controlled inrush current

Thermal shutdown and current limiting protection

Product Advantages

High efficiency and small solution size

Wide operating temperature range (-40°C to 125°C)

Minimal external components required

Suitable for a variety of step-down DC-DC applications

Key Technical Parameters

Input Voltage Range: 2.8V to 5.5V

Output Voltage Range: 0.6V to 5V

Switching Frequency: 100kHz to 1MHz

Maximum Output Current: Depends on external components

Efficiency: Up to 95%

Quality and Safety Features

Thermal shutdown protection

Current limiting protection

RoHS non-compliant

Compatibility

The LM1770SMF is compatible with a wide range of applications that require a high-performance, synchronous, current-mode DC-DC switching controller.

Application Areas

Portable electronics

Telecommunications equipment

Industrial automation

Automotive electronics

Medical devices

Product Lifecycle

The LM1770SMF is an active product and is not nearing discontinuation. Replacement and upgrade options are available from Texas Instruments.

Key Reasons to Choose This Product

High efficiency and small solution size

Wide input voltage and output voltage ranges

Wide operating temperature range

Integrated high-side and low-side MOSFET drivers

Synchronous rectification for high efficiency

Current-mode control for fast transient response

Minimal external components required

Thermal shutdown and current limiting protection

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM1770SMF

Product Attribute LM1770SMF LM1770UMF LM1770TMF LM1770TMFX
Part Number LM1770SMF LM1770UMF LM1770TMF LM1770TMFX
Manufacturer Texas Instruments Texas Instruments NS NS
Output Type Transistor Driver Transistor Driver - -
Clock Sync No No - -
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) - -
Series - - - -
Mounting Type Surface Mount Surface Mount - -
Function Step-Down Step-Down - -
Duty Cycle (Max) - - - -
Package / Case SC-74A, SOT-753 SC-74A, SOT-753 - -
Package Bulk Bulk - -
Control Features - - - -
Number of Outputs 1 1 - -
Output Phases 1 1 - -
Synchronous Rectifier Yes Yes - -
Topology Buck Buck - -
Supplier Device Package SOT-23-5 SOT-23-5 - -
Serial Interfaces - - - -
Base Product Number LM1770 LM1770 - -
Frequency - Switching 100kHz ~ 1MHz 100kHz ~ 1MHz - -
Voltage - Supply (Vcc/Vdd) 2.8V ~ 5.5V 2.8V ~ 5.5V - -
Output Configuration Positive Positive - -

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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LM1770SMF Image

LM1770SMF

Texas Instruments
32D-LM1770SMF

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