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AW9920 Datasheet(PDF) 4 Page - Shanghai awinic technology co.,ltd

Part # AW9920
Description  Inductor-Boost White LED Driver with Ultra-low EMI and PWM to DC Dimming
PDF  16 Pages
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Manufacturer  AWINIC [Shanghai awinic technology co.,ltd]
Direct Link  http://www.awinic.com.cn/index.php
Logo AWINIC - Shanghai awinic technology co.,ltd

AW9920 Datasheet(HTML) 4 Page - Shanghai awinic technology co.,ltd

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AW9920
September 2017 V1.0
www.awinic.com.cn
4
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD
ELECTRICAL CHARACTERISCTICS
Test Condition: TA = 25℃, VIN = 3.7V,CIN=1uF，COUT=0.47uF，IOUT=20mA，L=10uH (Unless otherwise
specified)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE AND CURRENT
VIN
Input voltage range
2.7
5.5
V
IQ
Operating quiescent current
FB=1.5V，No Switching
675
800
uA
IIN
Operation current
FB=0V，Switching
1.7
2.2
mA
ISHDN
Shutdown current
VEN<0.4V
0.1
1
uA
SYSTEM PARAMETER
RDS(ON)
NMOS
on-resistance
TA=25°C
1
1.2
Ω
ISW
SW pin leakage current
0.1
uA
ILIM
Current limit
1
A
ILED
LED driving current
20
mA
FOSC
Switching frequency
0.6
0.8
1
MHz
Dmax
Maximum SW duty cycle
92
95
%
Ts
Soft-start time
400
us
OVP
Over voltage protection voltage
Measured at VOUT pin
38
V
TOTP
Thermal shutdown threshold
157
°C
Thys
Thermal shutdown threshold hysteresis
40
°C
PWM DIMMING TIMING
FPWM
PWM dimming signal frequency at
EN pin
5
20
100
kHz
ENABLE
AND REFERENCE CONTROL
VIH
Logic high level
1.4
V
VIL
Logic low level
0.3
V
REN
Built-in resistor at EN pin
200
k
Ω
TSHDN
Shut down delay
From EN fall edge to
Chip shutdown
2
ms



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