www.addmtek.com copyright ? 2008 addtek corp. 1 dd082_a -- june 2008 A701/2 6 c hannels a djustable c onstant c urrent led d river description features 6 constant-current output channels output current deviations: 3% between channels, 7% between ics. output current programmable through external resistor. constant output current range: 5ma~40ma wide supply voltage range: 6v~50v (a702) 75v output sustaining voltage 1ua shut-down current 2 kinds of control logic for output enable pin applications A701/2 are adjustable constant current drivers for led applications. six regulated current ports are designed to provide uniform and pure dc constant current sinks for driving leds within a large range vf variation. A701/2 provide users 6-channel constant current ports to match leds with equal current. users may program the output current from 5ma to 40ma through an external resistor, r set , which gives user flexibility in controlling the light intensity of leds. two kinds of control logic, active high and active low, for output enable pin (oe/oe pin) are provided for user?s varies applications. it could precisely adjust led brightness from 0% to 100% via oe/oe pin with pulse width modulation signal. the thermal protection function protects ic from over temperature (150 c) damage. also, the thermal pad enhances the package power dissipation. automotive interior lighting channel letter, indoor lighting led backlight driver for mp3, mp4, mobile phone, portable dvd, nb, and lcd tv. typical application circuit package pin out turn on/off A701/a702 std out 2 vdd gnd out1 out 3 c in out 4 out 5 out 6 iset r set pwm dimming oe/oe c led v led v dd 7 6 1 2 3 10 9 8 iset oe/oe v dd out6 gnd msop-ep-10 pin (top view) out1 4 5 out3 out2 out4 out5 16 15 14 13 1 2 3 4 12 11 10 9 5 6 7 8 nc gnd qfn 3mm x 3mm (top view) out1 out2 out3 out4 nc v dd oe/oe gnd gnd out5 out6 iset gnd std order information msop-ep qfn 3x3 v dd range oe _____ /oe pin logic g 10 pin j 16 pin 2.9v~ 6v low enable A701gft A701jgt high enable a702gft-he a702jgt-he 6v~ 50v low enable a702gft a702jgt package process. f: lead free; g: green packing. t: tape & reel part number : a 7 0 1 a 7 0 2 h e n ote: package type. g: msop-ep; j: qfn-3 3 en pin logic. he: high enable
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