LM2621MM

LM2621MM, Step-Up DC-DC Converter, MSOP-8, 14.5V, 1A, National Semiconductor

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Price:: US $0.50~0.60 / piece [Get Latest Price]

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	US $0.50~0.60

PartNumber:: LM2621MM

Brand:: National Semiconductor - NS | Pack: MSOP | D/C: 12+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-07-26

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Part Number:LM2621MM
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Product Summary

The LM2621MM 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 converts it into a regulated output voltage. The output voltage can be adjusted between 1.24V and 14V. It has an internal 0.17W N-Channel MOSFET power switch. Efficiencies up to 90% are achievable using the LM2621MM. The high switching frequency (adjustable up to 2MHz) of the LM2621MM allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator 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. The LM2621MM is available in a Mini-SO-8 package. This package uses half the board area of a standard 8-pin SO and has a height of just 1.09 mm.

Parametrics

LM2621MM absolute maximum ratings: (1)SW Pin Voltage: -0.5 V to 14.5V; (2)BOOT, VDD, EN and FB Pins: -0.5V to 10V; (3)FREQ Pin: 100μA; (4)θJA: 240℃/W; (5)TJmax: 150℃; (6)Storage Temperature Range: -65℃ to +150℃; (7)Lead Temp. (Soldering, 5 sec): 260℃; (8)Power Dissipation (TA=25℃)(Note 2): 500mW; (9)ESD Rating (Note 3): 2kV.

Features

LM2621MM features: (1)Small Mini-SO8 Package (Half the Footprint of Standard 8-PiSO Package); (2)1.09 mm Package Height; (3)Up to 2 MHz Switching Frequency; (4)1.2V to 14V Input Voltage; (5)1.24V - 14V Adjustable Output Voltage; (6)Up to 1A Load Current; (7)0.17 W Internal MOSFET; (8)Up to 90% Regulator Efficiency; (9)80 μA Typical Operating Current; (10)<2.5μA Guaranteed Supply Current In Shutdown.