LM2575D2T-3.3R4G ON Semiconductor, LM2575D2T-3.3R4G Datasheet - Page 2

• Manufacturer Part Number: LM2575D2T-3.3R4G
• Description: IC REG SW 1A 3.3V STEPDWN D2PAK
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2575D2T-3.3R4G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 1A
• Frequency - Switching: 52kHz
• Voltage - Input: 4.75 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ABSOLUTE MAXIMUM RATINGS
Unregulated
Maximum Supply Voltage
ON/OFF Pin Input Voltage
Output Voltage to Ground (Steady−State)
Power Dissipation
Storage Temperature Range
Minimum ESD Rating (Human Body Model: C = 100 pF, R = 1.5 kW)
Lead Temperature (Soldering, 10 s)
Maximum Junction Temperature
Case 314B and 314D (TO−220, 5−Lead)
Case 936A (D
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Thermal Resistance, Junction−to−Ambient (Figure 34)
Thermal Resistance, Junction−to−Case
DC Input
C
in
Feedback
2
PAK)
+V
1
4
in
Unregulated
7.0 V - 40 V
R2
R1
1.0 k
Band-Gap
Reference
DC Input
1.235 V
Representative Block Diagram and Typical Application
Fixed Gain
Error Amplifier
18 kHz
Rating
Typical Application (Fixed Output Voltage Versions)
Freq
Shift
Figure 1. Block Diagram and Typical Application
(Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.)
100 mF
This device contains 162 active transistors.
C
Oscillator
in
52 kHz
Comparator
+V
3.1 V Internal
Regulator
in
1
3
http://onsemi.com
LM2575
GND
Reset
Latch
5
Current
2
Limit
ON/OFF
ON/OFF
Output
Feedback
4
2
Shutdown
Thermal
Driver
D1
1N5819
330 mH
L1
1.0 Amp
Switch
Symbol
R
R
R
R
T
V
P
P
C
330 mF
T
qJA
qJC
qJA
qJC
−
−
stg
−
−
out
in
D
D
J
ON/OFF
5
Output
2
GND
3
5.0 V Regulated
Output 1.0 A Load
−0.3 V ≤ V ≤ +V
Internally Limited
Internally Limited
Voltage Versions
For adjustable version
R1 = open, R2 = 0 W
−65 to +150
D1
Value
Output
−1.0
3.3 V
5.0 V
260
150
12 V
15 V
5.0
5.0
2.0
45
65
70
L1
C
in
out
8.84 k
11.3 k
1.7 k
3.1 k
Regulated
(W)
R2
Output
Load
V
°C/W
°C/W
°C/W
°C/W
out
Unit
°C
kV
°C
°C
W
W
V
V
V