LM2585S-12 National Semiconductor, LM2585S-12 Datasheet - Page 5

• Manufacturer Part Number: LM2585S-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2585S-12

• Input Voltage: 40V
• Output Voltage: 12V
• No. Of Pins: 5
• Peak Reflow Compatible (260 C): No
• Termination Type: SMD
• Supply Voltage Max: 40V
• Leaded Process Compatible: No
• Mounting Type: Through Hole
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

I
COMMON DEVICE PARAMETERS for all versions (Note 5)
I
V
f
f
V
I
I
D
I
V
V
I
θ
θ
θ
θ
θ
θ
θ
B
S
O
SC
EAO
SS
L
CL
JA
JA
JC
JA
JA
JA
JC
Symbol
Symbol
UV
EAO
SUS
SAT
Electrical Characteristics (All Versions)
Error Amp
Input Bias Current
Input Supply
Current
Input Supply
Undervoltage Lockout
Oscillator Frequency
Short-Circuit
Frequency
Error Amplifier
Output Swing
Error Amp
Output Current
(Source or Sink)
Soft Start Current
Maximum Duty
Cycle
Switch Leakage
Current
Switch Sustaining
Voltage
Switch Saturation
Voltage
NPN Switch
Current Limit
Thermal Resistance
Parameters
Parameters
V
(Switch Off)
(Note 8)
I
R
Measured at Switch Pin
R
V
Measured at Switch Pin
R
V
Upper Limit
(Note 7)
Lower Limit
(Note 8)
(Note 9)
V
V
R
(Note 7)
Switch Off
V
dV/dT = 1.5V/ns
I
T Package, Junction to Ambient
(Note 10)
T Package, Junction to Ambient
(Note 11)
T Package, Junction to Case
S Package, Junction to Ambient
(Note 12)
S Package, Junction to Ambient
(Note 13)
S Package, Junction to Ambient
(Note 14)
S Package, Junction to Case
SWITCH
SWITCH
COMP
LOAD
LOAD
COMP
LOAD
FEEDBACK
FEEDBACK
COMP
LOAD
SWITCH
= 100Ω
= 100Ω
= 100Ω
= 100Ω
= 1.0V
= 1.0V
= 1.0V
= 1.8A
= 3.0A
= 60V
Conditions
Conditions
= 1.15V
= 0.92V
5
Typical
Typical
3.30
0.25
11.0
0.45
125
100
165
2.8
4.0
11
50
25
98
15
65
45
56
35
26
2
2
2.6/2.4
110/70
8.0/7.0
85/75
93/90
3.05
Min
Min
3.0
65
15.5/16.5
0.40/0.55
17.0/19.0
425/600
100/115
115/125
260/320
300/600
0.65/0.9
Max
Max
3.75
7.0
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Units
Units
°C/W
kHz
kHz
mA
mA
nA
μA
μA
μA
%
V
V
V
V
V
A