LM2575-5.0WT Micrel Inc, LM2575-5.0WT Datasheet - Page 9
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LM2575-5.0WT
Manufacturer Part Number
LM2575-5.0WT
Description
IC REG BUCK 1A 5.0V TO-220-5
Manufacturer
Micrel Inc
Type
Step-Down (Buck)r
Datasheet
1.LM2575-5.0WT.pdf
(12 pages)
Specifications of LM2575-5.0WT
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
1A
Frequency - Switching
42kHz ~ 63kHz
Voltage - Input
4 ~ 40 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Straight Leads)
Input Voltage
40V
Output Current
1A
Output Voltage
5V
No. Of Outputs
1
Supply Voltage Range
4V To 40V
No. Of Pins
5
Operating Temperature Range
-40°C To +85°C
Frequency
52kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
576-1516-5
LM2575-5.0WT
LM2575-5.0WT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2575-5.0WT
Manufacturer:
MICREL
Quantity:
3 150
Functional Characteristics
Functional Diagrams
Micrel, Inc.
May 2009
V
Voltage
Change
Current
Output
Output
OUT
= 5V
+100mV
–100mV
1.0A
0.5A
0
0
Load Transient Response
V IN
V IN
FB
FB
1
4
1
4
Note: Pin numbers are for the TO-220 package
100µs/div.
REFERENCE
REFERENCE
BAND-GAP
BAND-GAP
1.23V
1.23V
3.1k
1.0k
(circuit of Figure 1)
+
-
+
-
FIXED GAIN
ERROR AMP
FIXED GAIN
ERROR AMP
OSCILLATOR
OSCILLATOR
52 kHz
52 kHz
Adjustable Regulator
+
+
-
-
Fixed Regulator
REGULATOR
COMPARATOR
COMPARATOR
REGULATOR
RESET
RESET
INTERNAL
INTERNAL
SHUTDOWN
SHUTDOWN
9
THERMAL
THERMAL
ON/OFF
ON/OFF
DRIVER
DRIVER
A
B
C
D
A: Output pin voltage 10V/div
B: Output pin current 1A/div
C: Inductor current 0.5A/div
D: Output ripple voltage 20 mV/div. AC coupled
Horizontal Time Base: 5µs/div
CURRENT
CURRENT
LIMIT
LIMIT
V
10V
.5A
OUT = 5V
1A
1A
0
0
0
1 AMP
SWITCH
SWITCH
1 AMP
V
IN = 20V
Switching Waveforms
5
2
3
5
2
3
ON/OFF
OUT
GND
ON/OFF
OUT
GND
M9999-051209-B
LM2575