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PDF SN03AAP Data sheet ( Hoja de datos )
| Número de pieza | SN03AAP | |
| Descripción | High Power Factor Flyback PWM Controller | |
| Fabricantes | On-Bright | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SN03AAP (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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SN03A
High Power Factor Flyback PWM Controller
GENERAL DESCRIPTION
SN03A is a high power factor flyback PWM
controller special for lighting applications.
SN03A features an internal start-up timer for
stand-alone applications, an analog multiplier with
for power factor correction (PFC), zero current
detector (ZCD) to ensure TM operation, a current
sensing comparator with built-in leading-edge
blanking, and a totem pole output ideally suited for
driving a power MOSFET.
SN03A offers great protection coverage including
system VCC under voltage lockout (UVLO),VCC
over voltage protection, Cycle-by-cycle current
limiting, and gate drive output clamping for
external power MOSFET protection.
Product Specification
FEATURES
• Low Start-up Current and Operating Current
• Cycle-by-Cycle Current Limiting
• Internal Leading Edge Blanking
• Analog multiplier for Power Factor Correction
• Internal Startup Timer for Stand-alone
Applications
• Trimmed 1.5% Internal Band gap Reference
• Under Voltage Lockout with Hysteresis
• VCC over voltage protection
• Transition Mode (TM) Operation
• Totem Pole Output with High State Clamping
• Audio Noise Free
• 11V to 32V wide range of VCC voltage
APPLICATIONS
• Single Stage High PF Flyback AC/DC SMPS
• LED Lighting Power
TYPICAL APPLICATION
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_SN03A00
1 page  
SN03A
High Power Factor Flyback PWM Controller
ELECTRICAL CHARACTERISTICS
(TA = 25℃ if not otherwise noted)
Symbol Pin Parameter
SUPPLY VOLTAGE SECTION
Vcc 8 Operating Range
UVLO(OFF) 8
VCC under voltage
lockout exit
UVLO(ON) 8
VCC under voltage
lockout enter
Hys 8 Hysteresis
Vz
8
VCC Zener
Voltage
Clamp
Vcc_ovp 8 VCC OVP threshold
SUPPLY CURRENT SECTION
Icc-start 8 Start-up Current
Iq
8
Quiescent Current,
Switching
No
Icc 8 Operating Supply Current
Test Conditions
After Turn On
Icc=5mA
Vcc=11V
Vcc=14.5V
GD=1nf @ 70kHz
ERROR AMPLIFIER SECTION
VREF
1 EA Reference
Gv Voltage Gain
Vcc=14.5V
Open Loop
Gb Gain Bandwidth
ICOMP
VCOMP
2
2
Source Current
Sink Current
Upper Clamp Voltage
Lower Clamp Voltage
MULTIPLIER SECTION
Vmult
3 Linear Operating Range
ΔVcs/
ΔVmult
Output Max. Slope
K Gain
CURRENT SENSE COMPARATOR
Vcs
4
Current Sense Reference
Clamp
Td(H-L) 4 Delay to Output
ZERO CURRENT DETECTOR
Vzcd
5
Input Threshold Voltage
Trigger level
Vzcd_hys
ZCD trigger Hysteresis
Vzcd
5 Upper Clamp Voltage
Vzcd
5 Lower Clamp Voltage
Izcd 5 Source Current Capability
Izcd 5 Sink Current Capability
STARTUP TIMER
Tstart
Re-Start Timer Period
GATE DRIVE SECTION
VoL 7 Low Output Voltage
VoH 7 High Output Voltage
Tr 7 Rising Time
Tf 7 Falling Time
Voclamp 7 Output Clamp Voltage
COMP=3.6V, FB=2.4V
COMP=3.6V, FB=2.6V
Isource=0.5mA
Isink=0.2mA
COMP=3.0V
Vmult=from 0 to 0.5V,
COMP=4.9V
Vmult=1V,
COMP=3.5V
Vmult=2.5V
COMP=4.9V
Izcd=2.5mA
Izcd=-2.5mA
Vcc=14.5V, Io=100mA
Vcc=14.5V, Io=100mA
Cl=1000pF, 10~90%
Cl=1000pF, 10~90%
Vcc=28V
Min
11
15.5
8.0
Typ
16.5
8.8
7.7
38
36.5
5
1.8
5
2.45
60
2.5
80
1.2
-2 -6
26
4.9
2.25
0 to 3.5
0.95
1.1
0.28
0.36
0.94
1.0
200
0.25
0.75
5.1 5.7
0
-3
3
45 55
8
80
30
16
Max Unit
32
17.5
V
V
9.6 V
V
V
V
15 uA
3 mA
7 mA
2.55 V
dB
MH
z
-10 mA
10 mA
V
V
0.44
V
V/V
1/V
1.06
450
V
ns
V
V
6.3 V
V
-5 mA
10 mA
65 us
1.5 V
V
150 ns
70 ns
18 V
©On-Bright Electronics
Confidential
-5-
Preliminary Datasheet
OB_DOC_DS_SN03A00
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SN03AAP.PDF ] | |
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