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Low Input Voltage, Step-Up DC-DC Converter LM2621MM

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Low Input Voltage, Step-Up DC-DC Converter LM2621MM

Model Number : LM2621MM

Certification : new & original

Place of Origin : original factory

MOQ : 10pcs

Price : negotiation

Payment Terms : T/T, Western Union, PayPal

Supply Ability : 300pcs

Delivery Time : 1 day

Packaging Details : please contact me for details

Description : Boost, SEPIC Switching Regulator IC Positive Adjustable 1.24V 1 Output 2.85A (Switch) 8-TSSOP, 8-MSOP (0.118", 3.00mm Wi

SW Pin Voltage : −0.5 V to 14.5V

BOOT, VDD, EN and FB Pins : −0.5V to 10V

FREQ Pin : 100µA

θJA : 240˚C/W

TJmax : 150˚C

Storage Temperature Range : −65˚C to +150˚C

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General Description Connection Diagram

The LM2621 is a high efficiency, step-up DC-DC switching

regulator for battery-powered and low input voltage systems.

It accepts an input voltage between 1.2V and 14V and con-

verts it into a regulated output voltage. The output voltage

can be adjusted between 1.24V and 14V. It has an internal

0.17Ω N-Channel MOSFET power switch. Efficiencies up to

90% are achievable using the LM2621.

The high switching frequency (adjustable up to 2MHz) of the

LM2621 allows for tiny surface mount inductors and capaci-

tors. Because of the unique constant-duty-cycle gated oscil-

lator topology very high efficiencies are realized over a wide

load range. The supply current is reduced to 80µA because

of the BiCMOS process technology. In the shutdown mode,

the supply current is less than 2.5µA. Typical Performance Characteristics

The LM2621 is available in a Mini-SO-8 package. This pack-

age uses half the board area of a standard 8-pin SO and has

a height of just 1.09 mm.

Features

♦ Small Mini-SO8 Package (Half the Footprint of Standard

8-Pin SO Package)

♦ 1.09 mm Package Height

♦ Up to 2 MHz Switching Frequency

♦ 1.2V to 14V Input Voltage

♦ 1.24V - 14V Adjustable Output Voltage

♦ Up to 1A Load Current

♦ 0.17 Ω Internal MOSFET

♦ Up to 90% Regulator Efficiency

♦ 80 µA Typical Operating Current

♦ <2.5µA Guaranteed Supply Current In Shutdown

Applications

♦ PDAs, Cellular Phones

♦ 2-Cell and 3-Cell Battery-Operated Equipment

♦ PCMCIA Cards, Memory Cards

♦ Flash Memory Programming

♦ TFT/LCD Applications

♦ 3.3V to 5.0V Conversion

♦ GPS Devices

♦ Two-Way Pagers

♦ Palmtop Computers

♦ Hand-Held Instruments


Product Tags:

electronics ic chip

      

integrated circuit ic

      
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