LM2576-3.3BU Micrel Inc, LM2576-3.3BU Datasheet - Page 7
![IC REG BUCK 3A 3.3V TO-263-5](/photos/7/59/75999/576-to-263-5_sml.jpg)
LM2576-3.3BU
Manufacturer Part Number
LM2576-3.3BU
Description
IC REG BUCK 3A 3.3V TO-263-5
Manufacturer
Micrel Inc
Type
Step-Down (Buck)r
Datasheet
1.LM2576WU_TR.pdf
(9 pages)
Specifications of LM2576-3.3BU
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3V
Current - Output
3A
Frequency - Switching
42kHz ~ 63kHz
Voltage - Input
4 ~ 40 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (5 leads + tab)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
LM2576
Typical Performance Characteristics
August 2005
Voltage
Change
Current
Output
Output
A
B
C
D
+100mV
-100mV
50V
4A
2A
4A
2A
3A
2A
1A
0
0
0
0
0
V
A: Output pin voltage 50V/div
B: Output pin current 2A/div
C: Inductor current 2A/div
D: Output ripple voltage 50 mV/div., AC coupled
Horizontal Time Base: 5µS/div
OUT = 5V
(Circuit of Figure 1 )
V
IN = 45V
Load Transient Response
Switching Waveforms
7
100 µS/div.
5 µS/div.
M9999-082605-B
Micrel, Inc.