Sanyo LA7838 Specifications
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Linear IC
Vertical Deflection Circuit
with TV/CRT Display Drive
Ordering number:ENN3313C
LA7837, 7838
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA7837, 7838 are vertical deflection output ICs developed for use in high-grade TVs and displays. The inter lace and crossover distortion responses, in particular, have
been greatly improved, allowing excellent picture quality
on large size televisions and high precision interlace mode
displays.
Also, pulse signals can be used for input signals due to the
on-chip sawtooth wave generating circuit and driver circuit. Further, the DC and A C feedback circuit can be formed
with these ICs alone, simplifying pattern design of sets and
ensuring stable performance. All of the functions in a color
TV signal system can be processed by connecting these
ICs with SANYO’s single-chip IC LA7670 series (NTSC)
and LA7680/85 series (PAL/NTSC) (VIF/SIF, video,
chroma, deflection).
The LA7837 has a maximum deflection current of 1.8App, making it appropriate for use in portable to mid-size televisions.
The LA7838 has a miximum deflection current of 2.2App, so it can be used for large size sets, and can drive from
33 to 37 inches.
Package Dimensions
unit:mm
3107-SIP13H
[LA7837, 7838]
25.6
3.4
1
2.00.8
0.5
10.0
2.0
13.9
11.2
1.0min
13
1.15
SANYO : SIP13H
11.8
2.4
15.4max
4.5
0.4
1.2
Features
• Low power dissipation due to on-chip pump-up circuit.
• On-chip 50/60Hz vertical size control circuit.
• On-chip sawtooth wave generating circuit.
• On-chip driver circuit.
• Vertical output circuit.
• On-chip thermal protection circuit.
• Excellent interlace response.
• Excellent crossover response.
12501TN (KT)/71693TS/8251TS(KOTO)/2090TA, TS(AF) No.3313–1/9
LA7837, 7838
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
V+
egatlovylppusrevirD
egatlovylppuspu-pmuP
egatlovylppustuptuO
tnerructuptuonoitcelfeDI
ecnatsiserlamrehT
noitapissidrewopelbawollAxamdPknistaehetinifnihtiW 8W
erutarepmetgnitarepOrpoT 58+ot02–
erutarepmetegarotSgtsT 051+ot04–
Operating Conditions at Ta = 25˚C, parenthesis ( ) indicates LA7838.
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusrevirddednemmoceRV+CC1 21V
egatlovylppusrevirdgnitarepOV+CC1 41ot8V
egatlovylppuspu-pmupdednemmoceRV+CC8 42V
egatlovylppuspu-pmupgnitarepOV+CC8 72ot01V
tnerructuptuonoitcelfeDp-p21I )2.2(8.1otpup-pA
thgieheslupmrofevawpmargnitarepOp-p6V }0.1–)3/1B+({otpup-pV
Operating Characteristics at Ta = 25˚C, +VCC1=12V, +VCC8=24V, parenthesis ( ) indicate LA7838.
retemaraPlobmySsnoitidnoC
tnerrucylppusrevirDI
egatlovdlohserhttupnireggirT2V6.29.22.3V
egatlovniplortnocedutilpmalacitreV4V9.51.63.6V
egatlovtratsnoitareneGmrofevawpmaRV
egatlovnoitarutasegrahcpu-pmuP11-9sVAm02=9I 8.1V
egatlovnoitarutasegrahcsidpu-pmuP9-8sV
)rewol(egatlovnoitarutastuptuonoitcelfeD11-21sV
)reppu(egatlovnoitarutastuptuonoitcelfeD21-31sV
tnerrucgnildII
niagegatloV 95Bd
xam1
CC
V+
xam8
CC
V+
xam31
CC
FED
θ c-j
sgnitaR
nimpytxam
16.57.68.7Am
CC
PMAR
A9.0=9I 0.3V
)A1.1=9I( )2.3(V
A9.0=21I 2.1V
)A1.1=21I( )5.1(V
A9.0=21I 2.3V
)A1.1=21I( )5.3(V
LD
6.49.42.5V
5356Am
51V
03V
26V
5.1+ot5.1–o-pA
˚C/W
4
˚C
˚C
tinU
No.3313–2/9
LA7837, 7838 Interface Circuit
LA7837, 7838
LA7837, 7838 Pin Connection Diagram and Block Diagram
No.3313–3/9
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