UC3552L Ver la hoja de datos (PDF) - Unisonic Technologies
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UC3552L Datasheet PDF : 7 Pages
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UNISONIC TECHNOLOGIES CO., LTD
UC3552
PWM DC-DC CONVERTER
WITH INTERNAL SWITCH AND
SOFT-START
CMOS IC
DESCRIPTION
The UTC UC3552 is a step-up PWM DC-DC converter with a
internal switch which is 1.6A, 0.23Ω. UTC UC3552 offers users
flexibility in determining loop dynamics and adjusting operating
frequency cause it’s equipped with an external compensation
pin ,and it also allows the use of small, low equivalent resistance
(ESR) ceramic output capacitors. UTC UC3552 is capable of
converting a standard input of 3.3V to multiple outputs of 8V, − 8V ,
and 23V. Otherwise, filtering and loop performance are enhanced
and facilitated by a high switching frequency of either 640 kHz
or1.3MHz.
As a power-smart design in shutdown mode a soft-start with an
external capacitor that sets the input current ramp rate, reduces the
current consumption to 0.1µA. A mere 2.6V input yields an
impressive output voltage to 12V when operating.
*Pb-free plating product number: UC3552L
FEATURES
* 1.6A, 0.23Ω, internal switch
* High efficiency: 90%
* Adjustable output: VDD to 12V
* Adjustable frequency: 640kHz or 1.3MHz
* Wide input range: +2.6V ~ +5.5V
* Low shutdown current: 0.1µA
* Programmable soft-start
ORDERING INFORMATION
Ordering Number
UC3552-S08-R
UC3552L-S08-R
UC3552-S08-T
UC3552L-S08-T
UC3552-SM1-R
UC3552L-SM1-R
UC3552-SM1-T
UC3552L-SM1-T
Package
SOP-8
SOP-8
MSOP-8
MSOP-8
Packing
Tape Reel
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Copyright © 2007 Unisonic Technologies Co., Ltd
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