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Power Converter. AE2596 Datasheet |
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CCM
AE2596 Specification
www.DataSheet4U.com SIMPLE SWITCHER POWER CONVERTER
AE2596
Features
3.3V, 5V, 12V, and adjustable
output versions
Adjustable version output
voltage range,1.2V to 37V
TO-220 and TO-263 packages
Output load current 3A
Input voltage range up to 40V
Requires only 4 external components
150 kHz fixed frequency internal
oscillator
TTL shutdown capability
Low power standby mode,
IQ typically 80 µA
High efficiency
Thermal shutdown and current
limit protection
Application
Simple high-efficiency step-down
(buck) regulator
On-card switching regulators
Positive to negative converter
General Description
The AE2596 series of regulators are monolithic
integrated circuits that provide all the active functions
for a step-down(buck) switching regulator, capable of
driving a 3A load with excellent line and load regulation.
These devices are available in fixed output voltages of
3.3V, 5V, 12V, and an adjustable output version.
Requiring a minimum number of external
components, these regulators are simple to use and
include internal frequency compensation, and a fixed
frequency oscillator.
The AE2596 series operates at a switching
frequency of 150 kHz thus allowing smaller sized filter
components than what would be needed with lower
frequency switching regulators. Available in a standard
5-lead TO-220 package with several different lead bend
options, and a 5-lead TO-263 surface mount package.
Other features include a guaranteed±4% tolerance
on output voltage under specified input voltage and
output load conditions, and±15% on the oscillator
frequency. External shutdown is included, featuring
typically 80 µA standby current. Selfprotection features
include a two stage frequency reducing current limit for
the output switch and an over temperature shutdown for
complete protection under fault conditions.
Pin Configuration
Pin No.
Symbol
Parameter
1
VIN
DC Input
2
Output
DC Output
3
GND
Ground
4
Feedback
Feedback signal
5
Standby control
1
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CCM
www.DataSheet4U.com
AE1501
AE2596 Specification
AE1501
AE1501
12345
5-LeadTO-220(B)
Block Diagram
12345
5-Lead TO-220(T)
ON/OFF
5
12345
5-Lead TO-263(S)
CURRENT
SOURCE
BIAS
1.235V
2.5V
REFERENCE REGULATOR
START
UP
CURRENT
LIMIT
4
R2
R1=2.5K
GM
AMP
2.5V
COMP
LATCH
DRIVER
3.3V, R2=4.2K
5V, R2=7.6K
12V, R2=21.8K
ADJ, R2=0, R1=OPEN
RESET
150KHz
OSC
THERMAL
LIMIT
1
2
3
2
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CCM
AE2596 Specification
Absolute Aaximum Ratings(note1)
www.DataSheet4U.com
Parameter
Rating
Unit
Maximum Supply Voltage
45 V
ON/OFF Pin Input Voltage
Feedback Pin Voltage
-0.3 25
-0.3 25
V
V
Power Dissipation
Internally limited
--
Storage Temperature Range
-65 150
Maximum Junction Temperature
150
Conditions
Temperature Range
-40 125
Supply Voltage
4.75 40
V
Electrical Characteristics
VO=3.3V
Symbol
Parameter
Min Typ Max
Conditions (Note 4) (Note 3) (Note4 ) Units
VOUT
Output
Voltage
VO=5V
VOUT
Efficiency
Output
Voltage
Efficiency
VO=12V
VOUT
Output
Voltage
Efficiency
Vout is adjustable
5V VIN 40V
0.2A ILOAD 3A
VIN=12V ILOAD=3A
7V VIN 40V
0.2A ILOAD 3A
VIN=12V ILOAD=3A
15V VIN 40V
0.2A ILOAD 3A
VIN=25V ILOAD=3A
3.18
--
4.80
--
11.65
--
4.5V VIN 40V
VFB
Feedback 0.2A ILOAD 3A 1.195
Voltage VOUT programmed
for 3V.
3.30
72
5.0
79
12.0
88
1.230
3.40
--
5.15
--
12.35
---
1.255
V
%
V
%
V
%
V
Efficiency
VIN=12V
-- 71
-- %
VOUT=3V ILOAD=3A
3
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