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Safety/Protection Features
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Overvoltage Protection Facility against Open Loop
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Protection against Short Circuit on Oscillator Pin
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Fully Programmable Foldback
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Soft-Start Feature
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Accurate max Duty Cycle Setting
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Demagnetization (Zero Current Detection) Protection
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Internally Trimmed Reference
Green Controller
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Low Start-Up and Operating Current
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Patented Stand-by Pulsed Mode for low stand-by losses
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Low dV/dT for Low EMI radiations
PINNING
PIN VALUE
1. Output Supply Voltage (Vcc)
: 12VDC
2. Output Supply Voltage (Vc)
: 12VDC
3. Output voltage
: LOW Level Drop Voltage 1VDC, Max : 1.2VDC (Isink=100mA)
1.4VDC, Max : 2VDC (Isink=500mA)
HIGH Level Drop Voltage 1.5VDC, Max : 2VDC (Isource=200mA)
2VDC, Max : 2.7VDC (Isource=500mA)
4. Ground
5. Foldback input
: 0.9VDC, Min:-0.3VDC, Max : Vcc+0.3VDC
6. Overvoltage protection (OVP)
: 0.78VDC, Min:-0.3VDC, Max : Vcc+0.3VDC
7. Current sense input
: Min:-0.3VDC, Max : Vcc+0.3VDC
8. Demagnetization detection input
: Idemag-ib (source):-4mA Idemag-ib (sink) : 10mA
9. Standby current set
: Ipeak-stby/Iref : 0.40 Min : 0.37 Max : 0.43
10. Oscillator voltage swing
: 2Vpp
11. Soft start/Dmax/Voltage mode
: Idischarge : 5mA, Min : 1.5mA (Vsoft start=1V)
12. Clamp E/A input
: 4.7VDC, Min : 4.5VDC Max : 4.9VDC
13. E/A output
: HIGH State:
6.5VDC, Min : 5.5VDC, Max : 7.5VDC LOW State : 1.0VDC, 1.1VDC
14. E/A input
: 2.5VDC, Min : 2.4VDC, Max : 2.6VDC
15. Stand-by management
: Stand-by On Detection current ratio : Idet/Iref : 0.38, Min : 0.34, Max : 0.42
Stand-by regulation current ratio : Ireg/Iref : 20.5, Min : 18, Max : 23
16. Rref input
: 2.5VDC, Min : 2.4VDC, Max : 2.6VDC
SDA525X:
General description:
The SDA525X is designed for a low cost mono TV-set with analogue picture and sound control. IN SDA525X the following
IC s are used and supported:
Non-volatile memory
: SDA 2526 or SDA2546
PLL
: SDA 3202-3, SDA 3302
IR transmitter
: SDA 2208-3 or SDA 2218
IR preamplifier
: SFH 506-32
Features:
General:
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Display of program number, channel number, TV standard, analogue values, sleep timer, parental control, and mute is done by
OSD
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Single LED for IR active, standby and on mode indication
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Local control (8 keys)
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IR remote control
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Control of volume, contrast, brightness, and saturation by analogue voltages
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Non-volatile memory for 50 or 100 programs, optimum analogue values and system parameters
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Individual delta volume for each program
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1 control line to select external source
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3 control lines for TV standard selection
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Automatic muting if no carrier detected
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Automatic switch-off when carrier disappears for more than 5 minutes
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Software protection against tube flashovers with internal watchdog timer
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Sleep timer
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Parental control
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IF 38 MHz or 38.9 MHz selectable
Tuning:
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Frequency synthesis tuning (62.5 kHz steps)
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192 step fine tuning
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Channels corresponding to standards
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100 programs selectable by directly entering a program number or by up/down function depending on the NVM size
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Channel selection by directly entering a channel number or by up/down function
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Channel search function in two directions
Sound:
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Mono sound control by analogue voltage
Service Mode:
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System configuration with service mode
