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PDF FAN7532 Data sheet ( Hoja de datos )
| Número de pieza | FAN7532 | |
| Descripción | Ballast Control IC | |
| Fabricantes | Fairchild Semiconductor | |
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FAN7532
Ballast Control IC
June 2006
Features
Floating Channel Designed for Bootstrap Operation to
+600V
Lower di/dt Gate Driver for Better Noise Immunity
Driver Current Capability: 250mA/500mA (Typ.)
Low Start-up and Operating Current: 120µA, 6.4mA
Under-Voltage Lockout (UVLO) with 1.8V of Hystere-
sis
Programmable Preheat Time and Frequency
Programmable Run Frequency
Protection from Failure to Strike
Lamp Filament Sensing and Protection
Automatic Restart for Lamp Exchange
High-Accuracy Oscillator
16-Pin SOP
Description
The FAN7532 provides simple and high-performance
electronic ballast control functions. Optimized for an
electronic ballast, the FAN7532 requires a minimum
board area and reduces component counts. The
FAN7532 is intended to drive two power MOSFETs in the
classical half-bridge topology with all the features
needed to properly drive and control a fluorescent lamp.
The FAN7532 has many comprehensive protection
features that work through filament failure, failure of a
lamp to strike, and automatic restarts. A dedicated timing
section in the FAN7532 allows the user to set the
necessary parameters to preheat, ignite, and run the
lamp properly.
Applications
General Purpose Ballast IC
16-SOP
1
Ordering Information
Part Number
FAN7532M
FAN7532MX
Package
16-SOP
Pb-Free
Yes
Operating Temperature Range Packing Method
-25°C ~ 125°C
TUBE
TAPE & REEL
FPSTM is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation
FAN7532 Rev. 1.0.2
1
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings
The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The
device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables
are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table defines the
conditions for actual device operation. (TA = 25°C, unless otherwise specified.)
Symbol
Characteristics
Min.
Max.
Unit
ICC
VS
VB
VHO
IOH
IOL
VIN
dVS/dt
Topr
Tstg
Supply Current (See Caution Below)
High-Side Floating Supply Offset Voltage
High-Side Floating Supply Voltage
High-Side Floating Output Voltage, HO
Drive Output Source Current
Drive Output Sink Current
CPH, CT, RT, and RPH Pins Input Voltage
Allowable Offset Voltage Slew Rate
Operating Temperature Range
Storage Temperature Range
-
VB-25
-0.3
VS-0.3
-0.3
-
-25
-65
25
VB+0.3
625
VS+0.3
250
500
6
50
125
150
mA
V
mA
V
V/ns
°C
Pd Power Dissipation
- 0.94 W
Rθja
Thermal Resistance (Junction-to-Air)
- 100 °C/W
Caution:
You must not supply a low-impedance voltage source to the internal clamping zener diode that is between the GND and
the VCC pin of this device.
Recommended Operating Conditions
Symbol
Parameter
Value
Unit
VCC Supply Voltage
VS High-Side Floating Offset Supply Voltage
VB High-Side Floating Supply Voltage
VHO High-Side Floating Output Voltage, HO
11 to VCL
600
VS+11 to VS+20
VS to VB
V
V
V
V
Temperature Characteristics (-25°C ≤ TA ≤ 125°C)
Symbol
Parameter
Δfos (Typ) Temperature Stability for Operating Frequency (fos)
Value
3
Unit
%
ESD Level
Parameter
Human Body Model (HBM)
Machine Model (MM)
Pins
GND, CPH, CT, RPH,
RT, OVP, OLP, LO
VB, VS, HO
LO
Conditions
R = 1.5kΩ,
C = 100pF
C=200pF
Level
±1000
±250
Unit
V
Note:
ESD immunity for all pins, except for condition noted above, is guaranteed up to 2000V (Human Body Model) and 300V
(Machine Model).
© 2006 Fairchild Semiconductor Corporation
FAN7532 Rev. 1.0.2
5
www.fairchildsemi.com
5 Page 
7. Protection Modes
The FAN7532 has two types of protection modes.
1) Over-Voltage Protection (OVP) Mode
The OVP pin is normally connected to the external
components that detect lamp voltage between a lamp’s
cathodes. This voltage is always maintained under 2V in
normal operation. If the lamp enters the end-lamp-life or
abnormal condition, the lamp does not turn-on even if
there is enough voltage supplied between two cathodes.
Normally, this condition means that one of the cathodes
is broken, deactivated, or the lamp is deeply blackened
around the cathodes. In this state, the ballast constantly
generates very high voltage between two cathodes to
ignite according to a specific procedure in the control IC.
When the voltage of OVP pin exceeds 2V, the IC
instantly enters the protection mode. To exit this mode,
the VCC must be recycled below the UVLO low
threshold.
VCC
15.6V
VUVLO+
VUVLO-
VCPH
5V
2.9V
FREQ
fPH
fOSC
OVP
VLAMP
Ignition fail
Ignition fail level
Preheating
Ignition Latched UVLO
shutdown
Preheating Ignition Run
Latched shutdown mode is removed
after VCC goes down to the UVLO-
FAN7532 Rev. 00
Figure 18. Timing Diagram (OVP Mode)
© 2006 Fairchild Semiconductor Corporation
FAN7532 Rev. 1.0.2
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet FAN7532.PDF ] | |
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