LM2578AM/NOPB National Semiconductor, LM2578AM/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM2578AM/NOPB
• Description: IC REG SIMPLE SWITCHER 8-SOIC
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Flybackr

Specifications of LM2578AM/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 750mA
• Frequency - Switching: 20kHz
• Voltage - Input: 2 ~ 40 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Primary Input Voltage: 40V
• No. Of Outputs: 1
• Output Current: 750mA
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Input Voltage Primary Max: 40V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Power - Output: -
• Other names: *LM2578AM; *LM2578AM/NOPB; LM2578AM

OSCILLATOR
f
∆f
REFERENCE/COMPARATOR (Note 7)
V
∆V
I
∆V
OUTPUT
V
V
I
BV
CURRENT LIMIT
V
OSC
INV
CES
R
C
E
CL
OSC
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Symbol
These specifications apply for 2V ≤ V
duty cycle ≤ 75%, unless otherwise specified. Values in standard typeface are for T
operation over the specified operating junction temperature range.
R
R
CEO(SUS)
Total Supply Voltage
Collector Output to Ground
Emitter Output to Ground (Note 2)
Power Dissipation (Note 3)
Output Current
Storage Temperature
Lead Temperature
Maximum Junction Temperature
(sat)
(sat)
/∆V
/∆t
(soldering, 10 seconds)
/∆T
IN
Frequency
Frequency Drift with Temperature
Amplitude
Input Reference
Voltage
Input Reference Voltage Line
Regulation
Inverting Input Current
Level Shift Accuracy
Input Reference Voltage Long Term
Stability
Collector Saturation Voltage
Emitter Saturation Voltage
Collector Leakage Current
Collector-Emitter Sustaining Voltage I
Sense Voltage Shutdown Level
Parameter
IN
≤ 40V (2.2V ≤ V
−65˚C to +150˚C
Internally limited
−0.3V to +50V
−1V to +50V
(Note 1)
I
I
I
I
I
Level Shift Current = 1 mA
I
grounded
I
V
V
Output OFF
Referred to V
(Note 9)
1
1
1
1
1
C
O
SUST
750 mA
IN
IN
= I
= I
= I
= I
= I
= 750 mA pulsed, Emitter
= 80 mA pulsed,
260˚C
150˚C
= V
= V
2
2
2
2
2
50V
= 0.2A (pulsed), V
= 0 mA and
= 1 mA
= 0 mA and
= 1 mA
= 0 mA, duty cycle = 25%
IN
C
CE
≤ 40V for T
= 40V
= 40V, Emitter grounded,
Conditions
IN
3
±
±
or Ground
1% (Note 8)
1% (Note 8)
Operating Ratings
ESD Tolerance (Note 4)
Ambient Temperature Range
Junction Temperature Range
LM2578A
LM3578A
LM2578A
LM3578A
J
≤ −25˚C), timing capacitor C
IN
= 0
J
= 25˚C; values in boldface type apply for
(Note 5)
Typical
−0.13
0.003
550
100
110
1.0
0.5
1.0
0.7
1.4
0.1
20
60
1.050/1.070
Limit (Note 6)
T
0.950/0.930
LM2578A/
LM3578A
0.01/0.02
= 3900 pF, and 25% ≤
0.90/1.2
200/250
1.7/2.0
10/13
160
24
16
50
80
0˚C ≤ T
0˚C ≤ T
−40˚C ≤ T
−40˚C ≤ T
www.national.com
J
kHz
kHz (max)
kHz (min)
%/˚C
mV
V
V (max)
V (min)
%/V
%/V (max)
µA
%
% (max)
ppm/1000h
V
V (max)
V
V (max)
µA
µA (max)
V
V (min)
mV
mV (min)
mV (max)
A
≤+125˚C
≤+125˚C
≤+85˚C
≤+70˚C
p-p
Units
2 kV
A
J