LM2576BU Micrel Inc, LM2576BU Datasheet - Page 7

• Manufacturer Part Number: LM2576BU
• Description: IC REG BUCK 3A ADJ TO-263-5
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of LM2576BU

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 37 V
• 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.