LM5021NA-1/NOPB National Semiconductor, LM5021NA-1/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM5021NA-1/NOPB
• Description: IC CTLR PWM AC-DC 8-MDIP
• Manufacturer: National Semiconductor

Specifications of LM5021NA-1/NOPB

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 85%
• Voltage - Supply: 8 V ~ 30 V
• Buck: Yes
• Boost: Yes
• Flyback: Yes
• Inverting: Yes
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM5021NA-1; *LM5021NA-1/NOPB; *LM5021NA-1NOPB; LM5021NA-1; LM5021NA-1NOPB; LM5021NA-1NOPB

VIN to GND
VIN Clamp Continuous Current
CS to GND
RT to GND
All other pins to GND
ESD Rating
Storage Temperature
Operating Junction Temperature
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
apply over the full Operating Junction Temperature Range. Unless otherwise specified: V
STARTUP CIRCUIT
VCC SUPPLY
SKIP CYCLE MODE COMPARATOR
CURRENT LIMIT
SOFT-START
OSCILLATOR
Symbol
V
SS-OCV
I
VIN
Human Body Model
(Note
Start Up Current
VCC Regulator enable threshold
VCC Regulator disable
threshold
VIN ESD Clamp voltage
Operating supply current
Controller enable threshold
Controller disable threshold
VCC regulated output
VCC dropout voltage (VIN -
VCC)
VCC regulator current limit
Skip Cycle mode enable
threshold
Skip Cycle mode hysteresis
CS limit to OUT delay
CS limit threshold
Leading Edge Blanking time
CS blanking sinking impedance
SS pin open-circuit voltage
Soft-start Current Source
Soft-start to COMP Offset
COMP sinking impedance
Frequency1 (RT = 44.2K)
Frequency2 (RT = 13.3K)
Sync threshold
2)
Parameter
-65°C to +150°C
Specifications in standard type face are for T
-0.3V to 1.25V
-0.3V to 5.5V
-0.3V to 7.0V
Before VCC Enable
I = 5mA
COMP = 0VDC
No External Load
I = 5 mA
VCC = 7.5V
CS stepped from 0 to
0.6V, time to OUT
transition low, C
0.
During SS ramp
(Note
-0.3V to 30V
[COMP - 1.25V]
Conditions
+150°C
1)
5mA
2kV
(Note
load
3
4)
=
VIN Voltage
Junction Temperature
Operating Ratings
0.45
0.35
Min
135
440
6.5
5.3
4.3
2.4
17
30
15
75
15
8
(Note
5)
J
= +25°C and those in boldface type
IN
7.25
0.55
Typ
125
150
500
2.5
5.8
8.5
1.7
0.5
5.2
3.2
18
20
36
22
35
90
35
22
60
= 15V, R
7
5
(Note
T
= 44.2KΩ.
1)
Max
3.75
0.55
0.75
175
165
560
7.5
6.3
6.1
3.8
25
23
40
55
30
9
-40°C to +125°C
(Note
www.national.com
8V to 30V
3)
Unit
kHz
kHz
mA
mA
mV
mV
µA
µA
ns
ns
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V