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PDF LR2596 Data sheet ( Hoja de datos )
| Número de pieza | LR2596 | |
| Descripción | 3A PWM Buck DC/DC Converter | |
| Fabricantes | LRC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LR2596 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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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
1 page  
Typical Application Circuit
Fig.1 Fixed Type Circuit
LESHAN RADIO COMPANY, LTD.
LR2596
+
Unregulated
DC Input
1
Input
4 Feedback
DLR25295696
Fix Output
2
Output
C1
680uF
3 GND
5 ON/OFF
L1
33uH
D1
1N5825
C2
220uF
L
O
A
D
Fig.2 Adjustable Output Voltage Versions
+
Unregulated
DC Input
R2
1K
4
R1
1 LRD22559966
2
Input Adjustable Output Output
C1
680uF
3
5
L1
47uH
D1
1N5825
C2
220uF
L
O
A
D
5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LR2596.PDF ] | |
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