Ordering number : EN7881A
LA78045
Monolithic Linear IC
TV and CRT Display Vertical
Output IC with Bus Control
Support
Overview
http://onsemi.com
The LA78045 is a vertical deflection output IC for high image quality TV and CRT displays that supports the use of a
bus control system signal-processing IC. The sawtooth waveform from the bus control system signal-processing IC can
directly drive the deflection yoke (including the DC component). Color TV vertical deflection system adjustment
functions can be controlled over a bus system by connecting the LA78045 to a our company LA768X series or
LA769XX series bus control system signal-processing IC.
Functions
•
Built-in pump-up circuit for low power dissipation.
•
Vertical output circuit.
•
Thermal protection circuit.
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Pump-up block supply voltage
Output block supply voltage
Allowable power dissipation
Deflection output current
Thermal resistance
Operating temperature
Storage temperature
Symbol
+B2 max
+B6 max
Pd max
I5 max
θj-c
Topr
Tstg
Mounted on an arbitrarily large heat sink.
Conditions
Ratings
45
92
9
-1.5 to +1.5
3
-20 to +85
-40 to +150
Unit
V
V
W
Ap-o
°C
/W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
July, 2013
92706 / 90705 MS OT B8-4538 No.7881-1/4
LA78045
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Deflection output current
+B2
+B2op
I5p-p
Symbol
Conditions
Ratings
30
16 to 43
To 2.2
Unit
V
V
Ap-p
Operating Characteristics
at Ta = 25°C, +B2 = 24V
Parameter
Deflection output saturation
voltage (lower)
Deflection output saturation
voltage (upper)
Pump-up charge saturation
voltage
Pump-up discharge saturation
voltage
Idling current
Midpoint voltage
Idl
Vmid
20
14.0
15.0
Vsat2-3
I3 = -1.1A
Vsat3-4
I3 = 20mA
Vsat6-5
I5 = -1.1A
Symbol
Vsat5-4
I5 = 1.1A
Conditions
min
Ratings
typ
max
1.5
3.5
1.8
3.2
50
16.0
V
V
V
V
mA
V
Unit
Note: Current flowing into the IC is positive (+) and current flowing out is negative (-).
Package Dimensions
unit : mm
3286
No.7881-2/4
LA78045
Application Circuit Example 2 (Dual power supply)
LA78045
1
+VCC
2
3
4
5
6
7
-VCC
IN
Vref
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No.7881-4/4
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
