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LR2596 Schematic ( PDF Datasheet ) - LRC

Teilenummer LR2596
Beschreibung 3A PWM Buck DC/DC Converter
Hersteller LRC
Logo LRC Logo 




Gesamt 7 Seiten
LR2596 Datasheet, Funktion
LESHAN RADIO COMPANY, LTD.
LR2596
150KHz, 3A PWM Buck DC/DC Converter
LR2596 Series
Description
The LR2596 is Monolithic IC that design for a step-down DC/DC Converter, and own
the ability of driving a 3A load without additional transistor component. The output
version included 3.3V, 5V, 12V and an adjustable type. It operates at a switching
frequency of 150KHz thus allowing smaller sized filter components than what would
be needed with lower frequency switching regulators. Other features include a
guaranteed ±4% tolerance on output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator frequency. Regarding protected
function, thermal shutdown is to prevent over temperature operating from damage,
and current limit is against over current operating of the output switch.
Features
3.3V, 5V, 12V and adjustable
Adjustable version output voltage range: 1.4-37V
• ±4% max over line and load conditions
150KHz ±15% fixed switching frequency
TTL shutdown capability
Operating voltage can be up to 40V
Output load current: 3A
TO220-5L and TO263-5L packages
Low power standby mode
Thermal-shuntdown and current-limit protection
High efficiency
Built-in switching a transistor on chip, requires only 4 external components
Applications
Simple High-efficiency step-down regulator
Positive to negative converter
On-card switching regulators
Connection Diagrams
Side
View
TO220-5L
Top
View
Metal Tab GND
Pins 1,3,5
Pins 2,4
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
Side
View
TO263-5L
Top
View
Metal Tab GND
12345
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
1/7






LR2596 Datasheet, Funktion
TO-263-5L Dimension
LESHAN RADIO COMPANY, LTD.
LR2596
AE
B FK
G
C
1 2345
H
I
J
D
a1
5-Lead TO-263
Plastic Package
DBMI Package Code: U
TO-220-5L Dimension
Marking:
Pb Free Mark
."
D
Pb-Free: "
U Product Series
ADJ,3.3,5.0,
2596 -
Normal: None
Date Code
Control Code
L
Note: Green label is used for pb-free packing
Pin Style: 1.Vin 2.Output 3.Ground 4.Feed Back
5.On/Off
Material:
Lead solder plating: Sn60/Pb40 (Normal),
Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free)
Mold Compound: Epoxy resin family,
flammability solid burning class: UL94V-0
DIM Min. Max.
A 9.9 10.30
B - #7.10
C 15.20 15.60
D - *1.70
E 4.50 4.70
F - *1.27
G 8.20 8.60
H 0.05 0.25
I 5.10 5.50
J 2.44 2.64
K - #7.00
L - #4.48
a1 0O 7O
#: REF, *: Typical, Unit: mm
B
C
D
S
A
r1
J
K
r2
G
I
E
L a1
F
O
r3
a1
M
a1 N
r3
r3
HP
Q
R
Marking:
Pb Free Mark
Pb-Free: ". "
D
Normal:
2596 -
Product Series
E ADJ,3.3,5.0,12
Date Code
Control Code
Note: Green label is used for pb-free packing
Pin Style: 1.Vin 2.Output 3.Ground 4.Feed Back
5.On/Off
Material:
Lead solder plating: Sn60/Pb40 (Normal),
Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free)
Mold Compound: Epoxy resin family,
flammability solid burning class: UL94V-0
5-Lead TO-220
Plastic Package
DBMI Package Code: E
DIM Min. Max.
A 10.10 10.50
B 2.55 2.95
C 3.20 3.60
D 7.90 8.30
E 12.50 12.90
F 22.30 22.70
G 3.20 3.60
H 0.70 0.90
I 6.60 7.00
J 4.40 4.80
K 1.17 1.37
L 17.00 18.00
M 16.00 16.40
N 17.00 19.00
O 2.30 2.70
P 3.30 4.10
Q 0.28 0.48
R 7.62 8.02
S 22.90 23.30
r1 1.85 1.95
r2 1.20 1.30
r3 2.80 3.20
a1 4.5o 5.5o
*: Typical, Unit: mm
6/7

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