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PDF AP3021 Data sheet ( Hoja de datos )
| Número de pieza | AP3021 | |
| Descripción | PWM Controller | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Preliminary Datasheet
PWM Controller
AP3021
General Description
AP3021 is a constant 330kHz, voltage mode, external
compensation boost controller. The IC has low
reference voltage which makes it ideal for low cost
LED backlight supplies. It can support DC dimming.
AP3021 employs complete protection to ensure
system security. The device integrates Under Voltage
Lockout, Over Voltage Protection, and Over
Temperature Protection to protect the circuit.
To satisfy the requirements for small mounting space
constraints, AP3021 is available in SOIC-8 package
to save space.
Features
• Voltage Mode PWM Controller
• Low Feedback Voltage: 0.2V
• Fixed Frequency: 330kHz
• DC Dimming
• Low Shutdown Current: 0.1µA
• External Compensation
• Built-in UVLO Function
• Built-in OVP
• Built-in OTP
Applications
• LED TV
• LED Monitor
• LED Display Module
SOIC-8
Figure 1. Package Type of AP3021
Aug. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
PWM Controller
AP3021
Electrical Characteristics
VDD=5V, TA=25ºC, unless otherwise specified.
Parameters
Symbol
SUPPLY VOLTAGE (VDD PIN)
Input Voltage
VDD
Quiescent Current
IQ
Shutdown Current
ISHDN
UNDER VOLTAGE LOCKOUT
Input UVLO Threshold
VUVLO
Input UVLO Hysteresis
VHYS
OVER VOLTAGE PROTECTION
Over Voltage Threshold
OVER TEMPERATURE PROTECTION
Thermal Shutdown Temperature
TOTSD
Thermal Shutdown Hysteresis
ENABLE (EN PIN)
EN Pin Threshold
VEN-OFF
VEN-ON
Conditions
VFB=0.3V
VEN=0V
VDD Rising
EN Pin Dimming Threshold
VEN-DIM
VOLTAGE REFERENCE (FB PIN)
Feedback Voltage
VFB
Feedback Bias Current
IFB
Line Regulation
OUTPUT
Oscillator Frequency
Maximum Duty Cycle
OUT Voltage (Note2)
Rising Time
Falling Time
fOSC
DMAX
VOUT
tRISE
tFALL
VDD=4.5V to 8V
TA=25ºC
VDD=8V to 18V
TA=25ºC
IOUT=10mA
Output Pin Load=1nF
Min Typ Max
4.0 18
5
0.1
3.8
100 200 300
1.45 1.55 1.65
160
20
0.3
2.6
0.4 0.5
2.4 2.6
0.194 0.2 0.206
35 100
2 20
4 40
247 330 412
85 90 95
VDD-1
65.5
88.5
Unit
V
mA
µA
V
mV
V
ºC
ºC
V
V
V
V
V
nA
mV
mV
kHz
%
V
ns
ns
Note 2: Guaranteed by design.
Aug. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AP3021.PDF ] | |
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