AL9910 Datasheet, PDF (2/14 Pages) Diodes Incorporated – UNIVERSAL HIGH VOLTAGE HIGH BRIGHTNESS LED DRIVER

AL9910/AL9910A
UNIVERSAL HIGH VOLTAGE HIGH BRIGHTNESS LED
DRIVER
Pin Descriptions
Pin Name
V_IN
CS
GND
Gate
PWM_D
V_DD
LD
R_OSC
EP PAD
SO-8
1
2
3
4
5
6
7
8
N/A
SO-8EP
Descriptions
1 Input voltage
2 Senses LED string current
3 Device ground
4 Drives the gate of the external MOSFET
5 Low Frequency PWM Dimming pin, also Enable input. Internal 100kΩ pull-down to GND
Internally regulated supply voltage.
• 7.5V nominal for AL9910 and
6
• 10V nominal for AL9910A.
Can supply up to 1 mA for external circuitry. A sufficient storage capacitor is used to
provide storage when the rectified AC input is near the zero crossing.
7 Linear Dimming by changing the current limit threshold at current sense comparator
8
Oscillator control. A resistor connected between this pin and ground sets the PWM
frequency.
EP Exposed Pad (bottom). Connect to GND directly underneath the package.
Absolute Maximum Ratings (Note 2)
Symbol
Parameter
Ratings
Unit
V_IN(MAX)
V_CS
V_LD
V_{PWM_D}
V_GATE
V_DD(MAX)
Maximum input voltage, V_IN, to GND
Maximum CS input pin voltage relative to GND
Maximum LD input pin voltage relative to GND
Maximum PWM_D input pin voltage relative to GND
Maximum GATE pin voltage relative to GND
Maximum V_DD pin voltage relative to GND
Continuous Power Dissipation (T_A = 25°C)
SO-8 (derate 6.3mW/°C above +25°C)
-0.5 to +520
V
-0.3 to 0.45
V
-0.3 to (V_DD + 0.3)
V
-0.3 to (V_DD + 0.3)
V
-0.3 to (V_DD + 0.3)
V
12
V
630
mW
SO-8EP (derate at 22mW/°C above 25°C)
2200
mW
T_J
Junction Temperature Range
T_ST
Storage Temperature Range
+125
°C
-65 to 150
°C
ESD HBM Human Body Model ESD Protection (Note 3)
1500
V
ESD MM Machine Model ESD Protection (Note 3)
300
V
Notes:
2. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the
specified terminal.
3. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when
handling and transporting these devices
Recommended Operating Conditions
Symbol
Parameter
V_INDC Input DC supply voltage range
AL9910
AL9910A
T_A Ambient temperature range
V_DD Maximum recommended voltage applied to V_DD pin (Note 4)
AL9910
AL9910A
V_EN(lo) Pin PWM_D input low voltage
V_EN(hi) Pin PWM_D input high voltage
Notes: 4. When using the AL9910 in isolated LED lamps an auxiliary winding might be used.
AL9910/AL9910A
Document number: DS 35103 Rev. 2 - 2
2 of 14
www.diodes.com
Min
15.0
20.0
-40
0
2.4
Max
500
500
85
10
11
1
V_DD
Unit
V
°C
V
V
March 2011
© Diodes Incorporated