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TDA7475A Datasheet(PDF) 4 Page - STMicroelectronics

Part # TDA7475A
Description  ELECTRO-LUMINESCENT DISPLAY DRIVER
PDF  6 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7475A Datasheet(HTML) 4 Page - STMicroelectronics

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Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
PROTECTION CIRCUIT
ICL1
Output current
VCCO
≥ 5V
1.0
1.8
A
ICL2
Start and protection current
60
80
110
mA
Ilimit
Detection current
1.0
1.5
2
A
Tlimit
Detection time (ICL1 > Ilimit)
4/fCLK
8/fCLK
s
Vstart1VCCO of starting ICL1
4.5
5
5.5
V
Vstart2VCCO of starting Gate
6.3
7
7.7
V
Tj-tsd
Tj of thermal shut down
135
145
°C
SUPPLY CURRENT
Istby
Stand-by current
VSB:L
1
20
µA
IC
VCC supply mean current
(including inductor current)
0.20
0.25
0.30
A
ELECTRICAL CHARACTERISTICS (continued)
220
µH
(RDC=0.3
Ωmax)
DSW
INTERNAL
VOLTAGE
SOURCE
OVER
VOLTAGE
PROTECTION
STAND-BY
CURRENT
LIMITER
OVER THERMAL
PROTECTION
QS
R
-
+
-
+
ERR. AMP.
PWM COMP
GATE
DRIVER
VCC
SENSE
1
µF
4.7
µF
EL DRIVER CONTROL
DIMMER
CONTROL
V
DC-sen
1/4 ~ 1/32
DIVIDER
CLK OSC
f=8,4,2,1KHz
f=32KHz
3
CEL
11
VDC
EL1
13
GATE
15
VCCO
16
V
CC
10
9
EL2
2
VSB
4
ISET-N
5
ISET-D
6
VDM
7
CLKC
2.2nF
8
CLKR
9.1K
Ω
1
TAB-GND
14
P-GND
10K
Ω
6.2K
Ω
D98AU981
I
CP
ICN
(*)
VCC
33nF
10nF
1.5K
Ω
1.5K
Ω
5V
5V
(*)RDS-ON =1Ω (Vgs=10V, Id=2.5A)
TEST AND APPLICATION CIRCUIT
TDA7475A
4/6



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