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C2012C0G1H101J

Part # C2012C0G1H101J
Description Cap Ceramic 100pF 50V C0G 5%SMD 0805 125C
Additional Information:


Category CAPACITOR
Availability In Stock
Qty 359
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TDK Corporation
Date Code: 1021
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

OUT
CS
SS
FB
COMP
/
UVLO
VIN
VCC
COMPENSATION
GND
V
OUT
LM5020
V
IN
RT SYNC
LM5020
www.ti.com
SNVS275F MAY 2004REVISED APRIL 2006
LM5020 100V Current Mode PWM Controller
Check for Samples: LM5020
1
FEATURES
PACKAGES
2
Internal Start-up Bias Regulator
VSSOP-10
Error Amplifier WSON-10 (4 mm x 4 mm)
Precision Voltage Reference
DESCRIPTION
Programmable Softstart
The LM5020 high voltage pulse-width-modulation
1A Peak Gate Driver
(PWM) controller contains all of the features needed
Maximum Duty Cycle Limiting (80% for
to implement single ended primary power converter
LM5020-1 or 50% for LM5020-2)
topologies. Output voltage regulation is based on
current-mode control, which eases the design of loop
Programmable Line Under Voltage Lockout
compensation while providing inherent line feed-
(UVLO) with Adjustable Hysteresis
forward. The LM5020 includes a high-voltage start-up
Cycle-by-Cycle Over-Current Protection
regulator that operates over a wide input range up to
Slope Compensation (LM5020-1)
100V. The PWM controller is designed for high speed
capability including an oscillator frequency range to
Programmable Oscillator Frequency with
1MHz and total propagation delays less than 100ns.
Synchronization Capability
Additional features include an error amplifier,
Current Sense Leading Edge Blanking
precision reference, line under-voltage lockout, cycle-
Thermal Shutdown Protection
by-cycle current limit, slope compensation, softstart,
oscillator synchronization capability and thermal
shutdown. The controller is available in both VSSOP-
APPLICATIONS
10 and WSON-10 packages.
Telecommunication Power Converters
Industrial Power Converters
+42V Automotive Systems
Typical Application Circuit
Figure 1. Non-Isolated Flyback Converter
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
1
2
3
4
5
6
7
8
9
10
FB
VCC
OUT
VIN
COMP
UVLO
GND
CS
RT/SYNC
SS
LM5020
SNVS275F MAY 2004REVISED APRIL 2006
www.ti.com
Connection Diagram
Top View
Figure 2. 10-Lead VSSOP, WSON
PIN DESCRIPTIONS
Pin Name Description Application Information
1 VIN Source Input Voltage Input to the start-up regulator. Input range is 13V to 100V.
2 FB Feedback Signal Inverting input of the internal error amplifier. The non-
inverting input is internally connected to a 1.25V reference.
3 COMP The output of the error amplifier and input to the COMP pull-up is provided by an internal 5K resistor which
Pulse Width Modulator may be used to bias an opto-coupler transistor.
4 VCC Output of the internal high voltage series pass If an auxiliary winding raises the voltage on this pin above
regulator. Regulated output voltage is 7.7V the regulation set point, the internal series pass regulator
will shut down, reducing the internal power dissipation.
5 OUT Output of the PWM controller Gate driver output with a 1A peak current capability.
6 GND Ground return
7 UVLO Line Under-Voltage Shutdown An external resistor divider from the power converter
source voltage sets the shutdown levels. The threshold at
this pin is 1.25V. Hysteresis is set by a switched internal
20µA current source.
8 CS Current Sense input Current sense input for current mode control and over-
current protection. Current limiting is accomplished using a
dedicated current sense comparator. If the CS pin voltage
exceeds 0.5V the OUT pin switches low for cycle-by-cycle
current limiting. CS is held low for 50ns after OUT switches
high to blank leading edge current spikes.
9 RT / SYNC Oscillator timing resistor pin and synchronization An external resistor connected from RT to GND sets the
input oscillator frequency. This pin also accepts synchronization
pulses from an external clock.
10 SS Softstart Input An external capacitor and an internal 10µA current source
set the soft-start ramp rate.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2 Submit Documentation Feedback Copyright © 2004–2006, Texas Instruments Incorporated
Product Folder Links: LM5020
LM5020
www.ti.com
SNVS275F MAY 2004REVISED APRIL 2006
Absolute Maximum Ratings
(1)(2)
VIN to GND -0.3V to 100V
VCC to GND -0.3V to 16V
RT to GND -0.3V to 5.5V
All other pins to GND -0.3V to 7V
Power Dissipation Internally Limited
ESD Rating
(3)
Human Body Model 2kV
Storage Temperature -65°C to +150°C
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 ensured 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 resistor.
Operating Ratings
VIN Voltage 13V to 90V
External Voltage applied to VCC 8V to 15V
Operating Junction Temperature -40°C to +125°C
Electrical Characteristics
Specifications in standard type face are for T
J
= +25°C and those in boldface type apply over the full operating junction
temperature range. Unless otherwise specified: VIN = 48V, VCC = 10V, and RT = 31.6k.
(1)
Symbol Parameter Conditions Min Typ Max Units
Startup Regulator
V
CC
Reg V
CC
Regulation V
CC
= Open 7.4 7.7 8.0 V
V
CC
Current Limit See
(2)
15 22 mA
I-V
IN
Startup Regulator Leakage V
IN
= 100V 150 500 µA
I
IN
Shutdown Current V
UVLO
= 0V, V
CC
= open 250 350 µA
VCC Supply
V
CC
UVLO (Rising) VccReg VccReg - V
- 300mV 100mV
V
CC
UVLO (Falling) 5.3 6.0 6.7 V
I
CC
Supply Current Cload = 0 2 3 mA
Error Amplifier
GBW Gain Bandwidth 4 MHz
DC Gain 75 dB
Reference Voltage FB = COMP 1.225 1.25 1.275 V
COMP Sink Capability FB = 1.5V COMP= 1V 5 17 mA
UVLO Pin
Shutdown Threshold 1.225 1.25 1.275 V
Undervoltage Shutdown Hysteresis 16 20 24 µA
Current Source
Current Limit
ILIM Delay to Output CS step from 0 to 0.6V 30 ns
Time to onset of OUT
Transition (90%)
Cycle by Cycle CS Threshold 0.45 0.5 0.55 V
Voltage
Leading Edge Blanking Time 50 ns
(1) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate National's Average Outgoing Quality Level (AOQL).
(2) Device thermal limitations may limit usable range.
Copyright © 2004–2006, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: LM5020
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