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| SQ9910 Datasheet, PDF (3/10 Pages) List of Unclassifed Manufacturers – Universal High Brightness LED Driver | |||
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SQ9910/SQ9910A
ELECTRICAL CHARACTERISTICS
(Over recommended operating conditions unless otherwise specifi ed - TA = 25°C)
Parameter
Symbol Min Typ Max
Input DC supply
voltage range
VINDC
15.0
500
Shut-down mode
supply current
Internally regulated
voltage
IInsd 1
IInsd 2
VDD 1
VDD 2
-
0.5
1
0.65 1.2
7.0
7.5
8.0
9.5
10 10.5
Maximal pin Vdd
voltage
VDDmax
13.5
VDD current available for
external circuitry 3
IDD(ext)
1.0
VDD under voltage
lockout threshold
UVLO
6.45
6.7 6.95
VDD under voltage
lockout hysteresis
âUVLO
500
Pin PWM_D input low
voltage
VEN(lo)
1.0
Pin PWM_D input high
voltage
VEN(hi)
2.4
Pin PWM_D pull-down
resistance
REN
150
200 250
Current sense pull-in
threshold voltage
VCS(hi)
225
250 275
GATE high output
voltage
VGATE(hi) VDD -0.3
VDD
GATE low output
voltage
VGATE(lo)
0
0.3
Oscillator frequency
fOSC
20
25
30
80
100 120
Maximum Oscillator
PWM Duty Cycle
DMAXhf
100
Linear Dimming pin
voltage range
VLD
0
-
250
Current sense blanking
interval
TBLANK
150
215 280
Delay from CS trip to
GATE lo
tDELAY
300
GATE output rise time
tRISE
30
50
GATE output fall time
tFALL
30
50
Thermal shut down
TSD
150
1 For SQ9910
2 For SQ9910A
3 Also limited by package power dissipation limit, whichever is lower.
Units
Conditions
V DC input voltage
mA
Pin PWM_D to GND,
VIN = 8V
V
VIN = 15 - 500V, lDD(ext)=0,
pin Gate open
V
When an external voltage
applied to pin Vdd
mA VIN = 15-100V
V Vin rising
mV Vin falling
V VIN = 15-500V
V VIN = 15-500V
kΩ VEN = 5V
mV @TA = -40°C to +85°C
V IOUT = 10mA
V IOUT = -10mA
kHz
ROSC = 1.00MΩ
ROSC = 226kΩ
%
FPWMhf = 25kHz, at GATE,
CS to GND.
mV @TA = <85°C, VIN = 12V
ns VCS = 0.55VLD, VLD = VDD
ns
Vin = 20V, VLD = 0.15, VCS
= 0 to 0.22V after TBLANK
ns CGATE = 500pF
ns CGATE = 500pF
ï°C
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