S5ELM2596 Datasheet, PDF (1/8 Pages) SeCoS Halbleitertechnologie GmbH – Simple Switcher Power Converter 150KHz 3A Step-Down Voltage Regulator

Elektronische Bauelemente
S5ELM2596
Simple Switcher Power Converter
150KHz 3A Step-Down Voltage Regulator
Description
The S5ELM2596 series of regulators are monolithic integrated
circuits that provide all active functions for a step-down (buck)
switching regulator, capable of driving 3A load with excellent line
and load regulation. These devices are available in fixed output
voltage of 3.3V,5V,12V and an adjustable output version.Requiring
a min. rumber of external components, these regulators are simple
to use and include internal frequency components and a fixed-
frequency oscillator. The S5ELM2596 series operates at a switching
frequency of 150KHz thus allowing smaller sized filter components
than what would be needed with lower frequency switching requlators.
Available in a standard 5-lead TO-220 package with several different
lead bend options. A standard series if inductors are available from
several differnet manufactures optimized for use with the S5ELM2596
series.The feature greatly simplifies the design of switching-mode
power supplies. Other feature include a guaranteed ± 4% to tolerance
on output voltage within specified input voltages and output load
condition, and ±15% on the oscillator frequency. External shutdown
is included, featuring 80uA(Typ.) standby current. The output switch
includes cycle-by-cycle current limiting, as well as thermal shutdown
for full protection under fault condition.
Features
* High Efficiency
* Input Voltage Range Up To 40V
* 150KHz Fixed Frequency Oscillator
* 3.3V,5V,12V and Adjustable Output Versions
* Uses Readily Available Standard Inductors
* TTL Shutdown Capability, Low Power Standby Mode
* Thermal Shutdown And Current Limit Protection
* Guaranteed 3A Output Current
* Efficient Per-regulator For Linear Regulators
* Requires Only 4 Extermal Components
* Adjustable Version Output Voltage Range,
1.23V to 37V ^±4% Max. Over Line And Load Conditions
Applications
* Positive To Negative Converter
* Simple High-Effciency Step-Down (Buck) Regulator
* On-Card Switching Regulators
REF.
A
b
c
D
E
L4
Millimeter
Min. Max.
4.40 4.80
0.76 1.00
0.36 0.50
8.60 9.00
9.80 10.4
14.7 15.3
REF.
c1
b1
L
e
L1
Ø
Millimeter
Min. Max.
1.25 1.45
1.17 1.47
13.25 14.25
2.54 REF.
2.60 2.89
3.71 3.96
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
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