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IL2576-XX Datasheet Preview

IL2576-XX Datasheet

Step-Down Switching Regulator

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TECHNICAL DATA
3.0 A, 15 V, Step-Down
Switching Regulator
IL2576-xx
The IL2576 series of regulators are monolithic integrated
circuits ideally suited for easy and convenient design of a step–
down switching regulator (buck converter). All circuits of this series
are capable of driving a 3.0 A load with excellent line and load
regulation. These devices are available in fixed output voltages of
3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.
TO-220-5L
These regulators were designed to minimize the number of
external components to simplify the power supply design. Standard
series of inductors optimized for use with the IL2576 are offered by
several different inductor manufacturers. Since the IL2576
converter is a switch–mode power supply, its efficiency is
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popular three–terminal
input voltages. In many
TO-263-5L
cases, the power dissipated is so low that no heatsink is required
or its size could be reduced dramatically.
A standard series of inductors optimized for use with the
IL2576 are available from several different manufacturers. This
ORDERING INFORMATION
feature greatly simplifies the design of switch–mode power
supplies. The IL2576 features include a guaranteed ±4% tolerance
on output voltage within specified input voltages and output load
IL2576S
IL2576D2
TO-220-5L
TO-263-5L
conditions, and ±10% on the oscillator frequency (±2% over 0°C to
125°C). External shutdown is included, featuring 80 (typical)
TA = -40° to 125° C for all packages
standby current. The output switch includes cycle–by–cycle current
limiting, as well as thermal shutdown for full protection under fault conditions.
Features
3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.23 to 37 V ±4%
Maximum Over Line and Load Conditions
Guaranteed 3.0 A Output Current
Wide Input Voltage Range
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
Pin connections
1. Vin
2. Output
3. Ground
4. Feedback
5. ON/OFF
Applications
Simple High–Efficiency Step–Down (Buck) Regulator
Efficient Pre–Regulator for Linear Regulators
On–Card Switching Regulators
Positive to Negative Converter (Buck–Boost)
Negative Step–Up Converters
Power Supply for Battery Chargers
Rev. 02




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IL2576-XX Datasheet Preview

IL2576-XX Datasheet

Step-Down Switching Regulator

No Preview Available !

Typical Application (Fixed Output Voltage Versions)
IL2576-xx
Figure 1.
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Representative Block Diagram and Typical Application
This device contains 162 active transistors.
Figure 2.
ABSOLUTE MAXIMUM RATINGS
(Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.)
Rating
Maximum Supply Voltage
ON/OFF Pin Input Voltage
Output Voltage to Ground (Steady–State)
Power Dissipation
TO–220, 5–Lead
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
TO–263, 5–Lead (D2PAK)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Storage Temperature Range
Minimum ESD Rating (Human Body Model:
C = 100 pF, R = 1.5 k)
Lead Temperature (Soldering, 10 seconds)
Maximum Junction Temperature
Symbol
Vin
PD
RθJA
RθJC
PD
RθJA
RθJC
Tstg
TJ
Value
45
–0.3 V V +Vin
–1.0
Internally Limited
65
5.0
Internally Limited
70
5.0
–65 to +150
2.0
260
150
Unit
V
V
V
W
°C/W
°C/W
W
°C/W
°C/W
°C
kV
°C
°C
Rev. 02


Part Number IL2576-XX
Description Step-Down Switching Regulator
Maker IK Semicon
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