LM5021MM-1/NOPB National Semiconductor, LM5021MM-1/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM5021MM-1/NOPB
• Description: IC PWM CTRLR AC-DC CURR 8-MSOP
• Manufacturer: National Semiconductor

Specifications of LM5021MM-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-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM5021MM-1; LM5021MM-1TR

www.national.com
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 3: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical
Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).
Note 4: Device thermal limitations may limit usable range.
Note 5: After initial turn-on at VIN = 20V.
PWM COMPARATOR
SLOPE COMPENSATION
OUTPUT SECTION
HICCUP MODE
THERMAL RESISTANCE
Symbol
V
I
I
V
V
OVCS
DTCS
θ
θ
OVLD
RST
HIC
JA
JA
COMP to OUT delay
Min Duty Cycle
Max Duty Cycle (-1 Device)
Max Duty Cycle (-2 Device)
COMP to PWM comparator gain
COMP Open Circuit Voltage
COMP at Max Duty Cycle
COMP Short Circuit Current
Slope Comp Amplitude
(LM5021-1 only)
OUT High Saturation
OUT Low Saturation
Peak Source Current
Peak Sink Current
Rise time
Fall time
Over load detection threshold
Hiccup mode threshold
Hiccup mode Restart threshold SS pin
Dead-time current source
Overload detection timer current
source
MSOP-8 Junction to Ambient
MDIP-8 Junction to Ambient
Parameter
COMP set to 2V
CS stepped 0 to
0.4V, time to OUT
transition low, C
0.
COMP = 0V
COMP = 0V
CS pin to PWM
Comparator offset at
maximum duty cycle
IOUT = 50mA, VCC -
OUT
IOUT = 100mA
OUT = VCC/2.
OUT = VCC/2.
C
C
COMP pin
SS pin
0 LFM
0 LFM
load
load
Conditions
= 1nF
= 1nF
load
4
=
V
V
SS-OCV
SS-OCV
Min
4.2
0.6
0.1
0.1
75
70
6
– 0.8
– 0.8
V
V
SS-OCV
SS-OCV
0.33
2.75
0.25
Typ
200
107
5.1
1.1
0.6
0.3
0.3
0.7
0.3
20
80
50
90
25
10
10
– 0.6
– 0.6
V
V
SS-OCV
SS-OCV
Max
110
1.5
1.1
0.5
0.4
85
14
0
6
1
– 0.4
– 0.4
°C/W
°C/W
Unit
mA
mV
µA
µA
ns
ns
ns
%
%
%
V
V
V
V
A
A
V
V
V