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LM5021NA-1NOPB Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza LM5021NA-1NOPB
Descripción Electrónicos  LM5021 AC-DC Current Mode PWM Controller
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LM5021NA-1NOPB Datasheet(HTML) 3 Page - Texas Instruments

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LM5021
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SNVS359D – MAY 2005 – REVISED MARCH 2013
Absolute Maximum Ratings
(1) (2)
VIN to GND
-0.3V to 30V
VIN Clamp Continuous Current
5mA
CS to GND
-0.3V to 1.25V
RT to GND
-0.3V to 5.5V
All other pins to GND
-0.3V to 7.0V
ESD Rating (3)
Human Body Model
2kV
Storage Temperature
-65°C to +150°C
Operating Junction Temperature
+150°C
(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 specifications and test conditions, see the Electrical Characteristics.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3)
The human body model is a 100 pF capacitor discharged through a 1.5k
Ω resistor into each pin.
Operating Ratings
(1)
VIN Voltage (2)
8V to 30V
Junction Temperature
-40°C to +125°C
(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 specifications and test conditions, see the Electrical Characteristics.
(2)
After initial turn-on at VIN = 20V.
Electrical Characteristics
(1)
Specifications in standard type face are for TJ= +25°C and those in boldface type apply over the full Operating Junction
Temperature Range. Unless otherwise specified: VIN = 15V, RT = 44.2KΩ.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
STARTUP CIRCUIT
Start Up Current
Before VCC Enable
18
25
µA
VCC Regulator enable threshold
17
20
23
V
VCC Regulator disable threshold
7.25
V
VIN ESD Clamp voltage
I = 5mA
30
36
40
V
IVIN
Operating supply current
COMP = 0VDC
2.5
3.75
mA
VCC SUPPLY
Controller enable threshold
6.5
7
7.5
V
Controller disable threshold
5.3
5.8
6.3
V
VCC regulated output
No External Load
8
8.5
9
V
VCC dropout voltage (VIN - VCC)
I = 5 mA
1.7
V
VCC regulator current limit
VCC = 7.5V (2)
15
22
mA
SKIP CYCLE MODE COMPARATOR
Skip Cycle mode enable threshold
⅓ [COMP - 1.25V]
75
125
175
mV
Skip Cycle mode hysteresis
5
mV
CURRENT LIMIT
CS limit to OUT delay
CS stepped from 0 to
35
ns
0.6V, time to OUT
transition low, Cload =
0.
CS limit threshold
0.45
0.5
0.55
V
Leading Edge Blanking time
90
ns
CS blanking sinking impedance
35
55
(1)
Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation
using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Device thermal limitations may limit usable range.
Copyright © 2005–2013, Texas Instruments Incorporated
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