LM2575 & LM2576
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
Symbol
VIN
Maximum
Units
Input Voltage
45
V
V
On/Off Pin Input Voltage
Output Voltage to Common (Steady State)
Power Dissipation
VON/OFF
-0.3 £ VON/OFF £ VIN
-1
V
PD
Internally Limited
W
Thermal Resistance Junction to Ambient
TO-220
TO-263
55
60
°C/W
°C/W
qJA
Thermal Resistance Junction to Case
TO-220
TO-263
2.0
2.0
qJC
Operating Junction Temperature Range
Storage Temperature Range
TJ
-40 to +125
°C
°C
°C
kV
TSTG
TLEAD
VESD
-65 to +150
Lead Temperature (Soldering) 10 Sec.
ESD Rating (Human Body Model)
300
2
Electrical Characteristics
Unless otherwise specified: VIN = 12V for 3.3V, 5V and ADJ options and 25V for 12V option; VOUT = 5V for ADJ option; TA = 25ºC; VIN rated = 40V;
IO = 0.5 to 3A (LM2576), 0.2 to 1A (LM2575). Values in bold apply over full operating temperature range.
Parameter
Symbol
Test Conditions
IO = 0.5A
Min
3.23
3.20
3.14
4.90
4.85
4.75
Typ
Max Units
Output Voltage
LM2576-3.3
VO
3.30
3.37
3.40
3.47
5.10
5.15
5.25
V
V
8V to VIN Rated
Output Voltage
LM2576-5
VO
VO
VFB
IB
IO = 0.5A
5.00
8V to VIN Rated
Output Voltage
LM2576-12
IO = 0.5A
11.76 12.00 12.24
V
15V to VIN Rated
11.52
12.48
11.40
12.60
Feedback Voltage
IO = 0.5A
1.217 1.230 1.243
V
LM2576-ADJ, VO = 5V
8V to VIN Rated
1.193
1.267
1.280
100
1.180
Feedback Bias Current
LM2576-ADJ
VIN = 12V, IO = 0.5A
50
nA
500
ã 2001 Semtech Corp.
2
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SEMTECH [ SEMTECH CORPORATION ]
