View NJU7385_5564136.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

NJU7385 - 1 - NJU7385vc3 dual h-bridge driver for actuator general description package outline the NJU7385 is a dual h-bridge driver ic that has general versatility for a compact actuator. the mode select function in t he control part can select two types of control systems, ?two -input? and ?phase & enable?. input part has a schmitt inverter circuit with a high resistance to noise. and it has a transition sequence which automatically transits to standby mode with no input signal. output part has two circuit configurations of independent h-bridge. protection circuit contains an under voltage lockout (uvlo) circuit and a thermal shutdown circuit and outputs alarm signal if an error is detected. supply /interface voltage corresponds to the logic, 3.3v/5.0v. the NJU7385 is superior to performance compared to conventional products. it has t he low current consumption and improved standby function (auto/m anual). especially, it is suitable for battery equipment. and it has versatility and a wide range of applications for various actuators, such as a compact step motor, dc motor, and solenoid. ? supply voltage v dd =2.5 to 5.5v v mm =3.0 to 8.0v ? output current io=400ma ? low quiescent current i dd =200 a typ. ? input control mode select function ? 2-input control ? phase & enable control ? standby function ? at no signal ? at using stb terminal ? under voltage lock out (uvlo) circuit ? thermal shutdown (tsd) circuit ? alarm output function (at the protection circuit operates) ? cmos technology ? package outline ssop20-c3
NJU7385 - 2 - absolute maximum ratings (ta=25 c) (*1): mounted on glass epoxy board based on eia/je dec. (114.3x76.2x1.6mm: 2layers/4layers) recommended operating conditions (ta=25 c) parameter symbol test condition min. typ. max. unit logic supply voltage v dd 2.5 3.3 5.5 v motor supply voltage v mm 3.0 7.2 8.0 v parameter symbol ratings unit logic supply voltage v dd 7 v motor supply voltage v mm 9 v motor output voltage v o 9 v sense terminal voltage v sense 7 v logic input terminal voltage v in 7 v alarm output voltage v alarm 7 v motor output current io 700 ma alarm output current i alarm 20 ma operating temperature topr -40 to +85 c junction temperature tj -40 to +150 c storage temperature tstg -50 to +150 c 1.0 (*1) mounted on 2layers pcb power dissipation p d 1.5 (*1) mounted on 4layers pcb w
NJU7385 - 3 - electrical characteristics (v dd =v stb = 3.3v, v mm1 =v mm2 =7.2v, v sense1 =v sense2 =0v, ta=25 c) parameter symbol test condition min. typ. max. unit general logic block quiescent current i dd except i ih - 200 300 a motor block quiescent current i mm per each channel - 100 150 a standby current i stb v stb =0v - 0.1 1 a input block h level input voltage 1 v ih1 2.0 - - v h level input voltage 2 v ih2 v dd =5.0v 2.6 - - v l level input voltage 1 v il1 - - 0.8 v l level input voltage 2 v il2 v dd =5.0v - - 1.0 v h level input current i iih v in = 3.3v, per each channel 22 33 55 a l level input current i il v in = 0v, per each channel - 100 200 na input pull down resistance r indn 60 100 140 k ? input pulse widths tp 2 - - s auto switched time to standby mode t stb v in1a /v in1b /v in2a /v in2b =0v 12 - 20 s alarm output l level output voltage v alarm r alarm =5k ? - 0.2 0.3 v leak current i leakalarm v alarm =5.5v - - 1.0 a motor output block high side output on resistance r oh io=400ma - 0.5 1.0 ? low side output on resistance r ol io=400ma - 0.5 1.0 ? high side leak current i oleakh v mm1 =v mm2 =8.0v, v stb =0v - - 1.0 a low side leak current i oleakl v mm1 =v mm2 =8.0v, v stb =0v - - 1.0 a sense terminal leak current i senseleak v sense =1v(sense gnd), v stb =0v - - 1.0 a delay time 1 t delay1 at normal operates - 500 - ns delay time 2 t delay2 at release from standby mode - 400 - ns thermal shutdown block thermal shutdown operating temperature t dtsd - 170 - c thermal shutdown recovery temperature t rtsd - 140 - c thermal shutdown hysteresis ? t tsd - 30 - c under voltage lock out block uvlo operating voltage v duvlo 1.4 1.8 2.1 v uvlo recovery voltage v ruvlo 1.6 2.0 2.4 v uvlo hysteresis voltage ? v uvlo 0.1 0.2 0.4 v
NJU7385 - 4 - pin connection ssop20-c3 pin function list pin# terminal name function remark 1 stb power saving state setting terminal h= normal operation, l=standby 2 vdd logic voltage supply terminal logic voltage supply 3 ms input control method setting input terminal l=2-input control type. h=phase&enable control type 4 n.c. no connection no connection 5 in1a 1ch output phase switch input terminal a it works as in1a at ms terminal=l, phase1 at ms terminal=h. 6 in1b 1ch output phase switch input terminal b it works as in1b at ms terminal=l, enable1 at ms terminal=h. 7 in2a 2ch output phase switch input terminal a it works as in2a at ms terminal=l, phase2 at ms terminal=h. 8 in2b 2ch output phase switch input terminal b it works as in2b at ms terminal=l, enable2 at ms terminal=h. 9 alarm internal protection operation detection output terminal when the internal protection operati on is detected, l level is output 10 gnd logic ground terminal logic ground 11 vmm2 motor voltage supply terminal 2 motor voltage supply 12 n.c. no connection no connection 13 out2a 2ch output terminal a - 14 out2b 2ch output terminal b - 15 sense2 current detection resistance connection terminal 2 it connects resistance for the detection of the electric current of the side of 2ch. at the unused time, it connects with gnd. 16 sense1 current detection resistance connection terminal 1 it connects resistance for the detection of the electric current of the side of 1ch. at the unused time, it connects with gnd. 17 out1b 1ch output terminal b - 18 out1a 1ch output terminal a - 19 n.c. no connection no connection 20 vmm1 motor voltage supply terminal 1 motor voltage supply out1b 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 st b vd d m s n.c. in1 a in1 b in2 a in2 b alarm gn d vmm n.c. out1a sense1 sense2 out2b out2a n.c. vmm2
NJU7385 - 5 - block diaglam out1a in2b in2a 1 ms NJU7385 in1b in1a 1 out1b gnd vdd bias out2a out2b a larm vmm2 gate-drive vmm1 control logic uvlo sense2 sense1 gate-drive tsd stb
NJU7385 - 6 - thermal resistance characteristics parameter symbol test condition min. typ. max. unit junction - ambient thermal resistance 1 ja_1 mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 2layers) - - 125 c /w junction ? case surface thermal resistance 1 jt_1 mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 2layers) - 10.8 - c /w junction-ambient thermal resistance 2 ja_2 mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 4layers) - - 83.3 c /w junction ? case surface thermal resistance 2 jt_2 mounted on glass epoxy board based on eia/jedec. (114.3x76.2x1.6mm: 4layers) - 9.4 - c /w truth table alarm logic alarm stb ms in1a/2a in1b/2b out1a/2a out1b/2b l l off off all turn off hlhl cw l h l h ccw hhhh brake h/l l off off all turn off l h l h ccw hhhl cw l h/l h/l h/l off off all turn off standby state1 h/l h/l all l all l off off all turn off standby state2 (ina1/a2/b1/b2=l) l h/l h/l h/l h/l off off all turn off state of internal protection function operating *off=hi-z h h l 2-input control h phase&enable control it works as ina1/b1=phase, ina2/b2=enable input logic output logic state remark
NJU7385 - 7 - function description auto standby function the device can be used for mobile equipments that require batt eries. when stb terminal turns to ?l?, standby state1 is achieved. on the other hand, 4 terminals (ia1a/1b,in2a/2b) ar e set to ?l?, standby state2 is achieved, which is unique from other devices. when in standby state, the device stands by under minimum power consumption. uvlo function uvlo function goes into action when vdd is less than 1.8v (t yp.). in the event of low vdd, uvlo circuit disables the drivers (out1a/2a & out1b/2b), and simultaneousl y sets the alarm output terminal to ?l?. tsd function tsd function goes into action when tj is more than 170 c (typ.). in the event of high tj, tsd circuit disables the drivers (out1a/2a & out1b/2b), and simultaneously se ts the alarm output terminal to ?l?. alarm output function in the event of fault conditions (uvlo, or tsd active), the device sets the alarm output terminal to ?l? to provide indication of fault conditions. at the same time, output terminal s for motor (out1a/2a & out1b/2b) are disabled to prevent damage and unpredictable device operation. stb: power saving state setting terminal stb set to ?l? puts the device in standby state1. it is a si milar condition with auto standby state (standby state2). ms: input control mode setting input terminal ms input control mode l 2-input control h phase & enable input control ms is used to toggle between 2-input co ntrol and phase & enable input control. when ms terminal turns to ?l?, 2-input control is selected. one of the features is: 4 half-bridges are controlled independently because the input and output is in a one-to-one ratio. (in1a-out1a, in1b-out1b, in2a-out2a, in2b-out2b) this input mode is relatively suitable for dc motor applications. in case of one-way rotation and braking control, it is possible to control 4 dc motors at the same time. additionally, in case of using of h-bridge control, it is available to be achieved precis ion current control around zero cross current area by using complementary pwm with pwm-duty control at ia1a/1b&in2a/2b terminals. when ms terminal turns to ?h?, phas e & enable input control is selected. the logic level of in1a/in2a corresponding to phase-fu nction decides current direction in h-bridge control. in1b/in2b correspond to enable-function. when in1b/in2b ar e set to ?l?, the drivers (out1a/2a & out1b/2b) are disabled. this input mode is relatively suitable for stepper motor applic ations. it is possible to control half-step-mode that needs making the drivers disabled. additionally, in case of full-step-mode , it is available to be achieved a simp le control of stepper motor using only 2 wires to in1a/in2a.
NJU7385 - 8 - application circuit for stepper motor for dc motor / solenoid out1a in2b in2a 1 ms NJU7385 in1b in1a 1 out1b gnd vdd bias out2a out2b a larm vmm2 gate-drive vmm1 control logic uvlo sense2 sense1 gate-drive tsd stb m micro controller/ microprocessor vdd + outpu t outpu t outpu t outpu t outpu t inpu t vmm + out1a in2b in2a 1 ms NJU7385 in1b in1a 1 out1b gnd vdd bias out2a out2b a larm vmm2 gate-drive vmm1 control logic uvlo sense2 sense1 gate-drive tsd stb micro controller/ microprocessor vdd + outpu t outpu t outpu t outpu t outpu t inpu t m vmm1 + m vmm2 +
NJU7385 - 9 - timing chart 2-input control mode 1 3 2 4 1 3 5/6 2 4 1 ccw brake in1a(2a) out1a(2a) out1b(2b) stb in1b(2b) t delay2 ms stb1 hi- z stb2 hi- z stb1 hi- z t delay1 t stb t delay2 t delay1 t delay1 t delay2 output stage with current paths during turn-on, turn off. 2-input control mode ccw mode current path stb1 hi- z stb1 hi- z stb2 hi- z cw mode cw ccw cw cw 4 2 1 6 5 6 5 vmm 1 outa outb 3 vmm 4 outa outb 2 1 3 4 2 3
NJU7385 - 10 - phase-enable control mode 1 3 2 4 1 3 5/6 2 4 1 ccw brake in1a(2a) out1a(2a) out1b(2b) stb in1b(2b) t delay2 ms stb1 hi- z stb2 hi- z stb1 hi- z t delay1 t stb t delay2 t delay1 t delay1 t delay2 output stage with current paths during turn-on, turn off. 2-input control mode ccw mode current path stb1 hi- z stb1 hi- z stb2 hi- z cw mode cw ccw cw cw 4 2 1 6 5 6 5 vmm 1 outa outb 3 vmm 4 outa outb 2 1 3 4 2 3
NJU7385 - 11 - typical characteristics v dd -i dd 0 50 100 150 200 250 300 350 400 450 500 012345678 v dd (v) i dd (ua) tj=25c v mm -i mm1 0 50 100 150 200 250 300 350 400 450 500 012345678910 v mm (v) i mm1 (ua) tj=25c v mm -v ol 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0123456789 v mm (v) v ol (v) io=400ma tj=25 c v mm -v oh 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0123456789 v mm (v) v oh (v) io=400ma tj=25 c
NJU7385 - 12 - typical characteristics io-v ol 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 100 200 300 400 500 600 700 800 900 io( ma ) v ol (v) v mm =7.2v tj=25 c io-v oh 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 100 200 300 400 500 600 700 800 900 io( ma ) v oh (v) v mm =7.2v tj=25 c i alarm -v alarm 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 2 4 6 8 10 12 14 16 18 20 22 24 i alarm (ma) v alarm (v) tj=25c v dd -v in 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 01234567 v dd (v) v in (v) tj=25c v ih v il
NJU7385 - 13 - typical characteristics [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. t j -i dd 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 -50 -25 0 25 50 75 100 125 150 tj(c) i dd (ma) v dd =3.3v t j -i mm1 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 -50 -25 0 25 50 75 100 125 150 tj(c) i mm1 (ma) v mm =7.2v t j -v oh 0 100 200 300 400 500 600 700 800 -50 -25 0 25 50 75 100 125 150 tj(c) v oh (mv) io=400ma v mm =7.2v t j -v ol 0 100 200 300 400 500 600 700 800 -50 -25 0 25 50 75 100 125 150 tj(c) v ol (mv) io=400ma v mm =7.2v

▲Up To Search▲

Price & Availability of NJU7385

	To Download NJU7385 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .