RT8750

RT8750 RICHTEK | Alldatasheet

Document overview

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Technical content

Features

zzzzz Built-in 4+1 Full-Swing Drivers Controlled by Serial or Parallel Input Data with Brake Function zzzzz Built-in 3+1 Constant Voltage Drivers Controlled by Serial or Parallel Input Data with Brake Function zzzzz Built-in 1 Constant Current Driver for Shutter or IRIS Application zzzzz Low On-Resistance (1.2ΩΩΩΩΩ, Sum of Upper and Bottom Side Drivers) zzzzz Output Current : IOUT ≤≤≤≤≤ 800mA per Channel zzzzz CH1/2 STM Control Mode Operable in 2-2 Phase or 1-2 Phase zzzzz CH13/23 Exclusive Control Mode (STM-2, CH5) zzzzz CH35 Exclusive Control Mode (DCM, CH6) zzzzz Built-in 2 PI Channels (for Photo Interrupter Driver) zzzzz Built-in 4-Bit DAC Circuits zzzzz Built-in Thermal Shutdown Protection zzzzz Under Voltage Lockout Protection zzzzz Power Save Mode Setup by Serial Input Data zzzzz Constant Current Value Set by Serial Input Data zzzzz 20-Lead WQFN Package zzzzz RoHS Compliant and Halogen Free OUT1B OUT2A OUT3B OUT2B IN2 IN3 PI1 VM RNF4 OUT4B CS OUT3A OUT5A VCC PI2 17181920 9876 GND 115 IN1 OUT1A SDAT SCLK OUT4A K1=YM DNN Marking Information K1= : Product Code YMDNN : Date Code RT8750 Package Type QW : WQFN-20L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free)

DS8750-01 April 2011 www.richtek.com Functional Pin Description Pin No. Pin Name Pin Function 1 OUT3B CH3 H-Bridge Output B Terminal. 2 OUT2B CH2 H-Bridge Output B Terminal. 3 OUT2A CH2 H-Bridge Output A Terminal. 4 OUT1B CH1 H-Bridge Output B Terminal. 5 OUT1A CH1 H-Bridge Output A Terminal. 6 RNF4 CH4 Current Detect Terminal for CC or FS Ground. 7 OUT4B CH4 H-Bridge Output B Terminal. 8 OUT4A CH4 H-Bridge Output A Terminal. 9 CS Serial Data Latch Control. 10 SCLK Serial Clock Input. 11 SDAT Serial Data Input. 12 PI1 PI1 Driver Output. 13 VM Power Supply for Motor Blocks. 14 IN3 Parallel Input Control. 15 IN2 Parallel Input Control. 16 IN1 Parallel Input Control. 17 VCC IC Analog Input Power Pin. 18 PI2 PI2 Driver Output. 19 OUT5A CH5 Push-pull Output A Terminal. 20 OUT3A CH3 H-Bridge Output A Terminal. 21 (Exposed Pad) GND Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum thermal dissipation. Function Block Diagram 1CH FS/CV 2CH FS/CV 3CH FS/CV 5CH FS/CV Exclusive 1 4CH FS/CC Control Logic4-bit DAC VC12VC3VC4 Bias Low Voltage Detection TSD VREF PI1 PI2 RNF4 GND VM OUT4B OUT4A OUT5A Exclusive 2 OUT3B OUT3A OUT2B OUT2A OUT1B OUT1A SDAT SCLK CS IN1 IN2 IN3 VCC

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Electrical Characteristics

Recommended Operating Conditions (Note 5) Absolute Maximum Ratings (Note 1) z Power Dissipation, PD @ TA = 25°C z Package Thermal Resistance (Note 3) z ESD Susceptibility (Note 4) Parameter Symbol Test Conditions Min Typ Max Unit Power Supply Current VCC Standby Current I CC0 PS1 = Low, all input pin open -- 3 10 μA VM Standby Current I M01 PS1 = Low -- 0.1 5 μA ICC1 -- 0.6 2 Consuming Current when Driver Operation IM1 PS1 = High, All CH drivers in operation PI1 to PI2 ON, no load -- 0.6 2 mA Logic-High V IH 2 -- -- IN1 to IN3 Input Threshold Voltage Logic-Low V IL VCC = 2.7 to 3.6V -- -- 0.8 V Logic-High V IH VCC x 0.6 -- -- CS, SDA T , SCLK Input Threshold Voltage Logic-Low V IL -- -- VCC x 0.5 V SDAT, SCLK, IN1 to 3 Sink Current -- 2 6 μA CS Sink Current V CC > 2V -- 6 20 μA VCC, UVLO Threshold V UVLO V M = 5V 1.55 1.65 1.8 V VCC, POR Threshold V POR V M = 5V 1.8 2 2.2 V CH1, CH2, CH3, CH5 On-Resistance 1 R ON1 VM = 5V , IOUT = 100mA sum of on-resistance -- 1.2 1.6 Ω To be continued

DS8750-01 April 2011 www.richtek.com Note 1. Stresses listed as the above “Absolute Maximum Ratings ” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. As a rule, d o not apply reverse power supply voltages. Note 3. θJA is measured in natural convection at T A = 25°C on a high-effective thermal conductivity four-layer test board of JEDEC 51-7 thermal measurement standard. The measurement case position of θJC is on the exposed pad of the package. Note 4. Devices are ESD sensitive. Handling precaution is recommended. Note 5. The device is not guaranteed to function outside its operating conditions. Parameter Symbol Test Conditions Min Typ Max Unit On-Resistance 2 R ON2 VM = 3V, IOUT = 100mA sum of on-resistance -- 1.5 2 Ω Constant Voltage Output V OUT DAC accuracy with no load between a setting output and GND −5 0 5 % Constant Current Driver (CH4) On-Resistance 1 R ION1 IOUT = 100mA VRNF4 = 0V VM = 5V, sum of on resistance -- 1.1 1.4 Ω On-Resistance 2 R ION2 IOUT = 100mA VRNF4 = 0V VM = 3V, sum of on resistance -- 1.3 1.8 Ω Constant Current Accuracy (200mA) IOUT_ACC RNF4 = 1Ω VM = 5V DAC : 200mV 190 200 210 mA RNF4 Voltage1 V RNF1 R NF4 = 1Ω DAC : 300mV −5 0 5 % RNF4 Voltage2 V RNF2 R NF4 = 1Ω DAC : 150mV −8 0 8 % PI Driver On-Voltage V PION I OUT_ACC = 30mA -- 0.2 0.4 V Off-State Leakage Current I OFF VCC ≥ PIOUT −2 0 2 μA Thermal Shutdown Temperature TSD Chip temperature when the H-bridge output turns OFF. 125 160 -- °C Thermal Shutdown Hysteresis ΔTSD Hysteresis temperature when the H-bridge output returns ON. -- 20 - °C Serial Control Pin SCLK Frequency f sclk -- 5 6.2 MHz CS Setup Time t sets 200 -- -- ns CS Hold Time t holds 100 -- -- ns CS Negate Time t negs 200 -- -- ns SDAT Setup Time t setd 60 -- -- ns SDAT Hold Time t hold 20 -- -- ns

www.richtek.com DS8750-01 April 2011 Applications Information No. Address Data b15 b14 b13 b12 b1 1 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 A0 0 0 CH1/2 control mode CH3 control mode CH4 control mode CH3/5 exclusive control PI1 control PI2 control CH1/2/3 exclusive control A1 0 1 CH1/2 DAC CH3 DAC CH1/2 CV/FS CH3/5 CV/FS CH3/5 Disable Input pin select A2 1 0 CH4 DAC No use CH4 Disable CH4 CC/FS No use CH1/2 , CH13/23 serial control input CH3 serial control input CH4 serial control input A3 1 1 IN1A IN1B IN2A IN2B IN3A IN3B IN4A IN4B No use PS1 CH1/2 disable CH1/2 DCM/ STM S/W Reset Note : FS : Full Swing, CC : Constant Current, CV : Constant Voltage Serial Control Register Map S/W Reset (Serial Control) Internal Logic

0 Enable (Input signal readable)

1 Initial clear (Software reset)

DS8750-01 April 2011 www.richtek.com Serial Control Function Table Address <0 0> CH 1, 2, 3, 4 Control Mode Setup/PI Control z The lower shows the initial value of each register Data bit Bit name Function b13 to b1 1 CH1/2 control mode select CH1/2 control mode select 000 : PWM Mode1 001 : PWM Mode2 010 : PWM Mode3 011 : PWM Mode4 100 : Serial mode 101 : Set prohibition (CH1/2 Hi-Z) 110 : CH1/2 3 lines control (STM 1-2 phase drive) 111 : CH1/2 2-lines control (STM 2-2 phase drive) b10 to b8 CH3 control mode select CH3 control mode select 000 : PWM Mode1 001 : PWM Mode2 010 : PWM Mode3 011 : PWM Mode4 100 : Serial mode 101 : Parallel mode 110 : Set prohibition (CH3 Hi-Z) 111 : Set prohibition (CH3 Hi-Z) b7 to b5 CH4 mode setup CH4 control mode select 000 : PWM Mode1 001 : PWM Mode2 010 : PWM Mode3 011 : PWM Mode4 100 : Serial mode 101 : Parallel mode 110 : Set prohibition (CH4 Hi-Z) 111 : Set prohibition (CH4 Hi-Z) b4 CH3/5 exclusive control 0: Normal mode 1: CH3/5 exclusive control mode b3 PI1 control 0: OFF (Output = Hi-Z) 1: ON (Output = L) b2 PI2 control 0: OFF (Output = Hi-Z) 1: ON (Output = L) b1 to b0 CH1/2/3 exclusive control 00 : Normal mode 01 : CH13 Exclusive control mode 10 : CH23 Exclusive control mode 11 : CH13/23 Exclusive control mode No. Address Data b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 CH1/2 control mode CH3 control mode CH4 control mode CH3/5 exclusive control PI1 control PI2 control CH1/2/3 exclusive control A0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Note : CH1/2 can't support parallel mode.

www.richtek.com DS8750-01 April 2011 Address <0 1> CH1, 2, 3 DAC & mode setup/Input pin select Data bit Bit name Function b13 to b10 CH1/2 constant voltage value setup 1.80 to 4.80V, 0.2V/bit 0000 : 4.80V 0001 : 4.60V 0010 : 4.40V 001 1 : 4.20V 0100 : 4.00V 0101 : 3.80V 01 10 : 3.60V 01 1 1 : 3.40V 1 0 0 0 : 3 . 2 0 V 1 0 0 1 : 3 . 0 0 V 1010 : 2.80V 1011 : 2.60V 1100 : 2.40V 1101 : 2.20V 1 1 10 : 2.00V 1111 : 1.80V b9 to b6 CH3 constant voltage value setup 1.80 to 4.80V, 0.2V/bit 0000 : 4.80V 0001 : 4.60V 0010 : 4.40V 001 1 : 4.20V 0100 : 4.00V 0101 : 3.80V 01 10 : 3.60V 01 1 1 : 3.40V 1 0 0 0 : 3 . 2 0 V 1 0 0 1 : 3 . 0 0 V 1010 : 2.80V 1011 : 2.60V 1100 : 2.40V 1101 : 2.20V 1 1 10 : 2.00V 1111 : 1.80V b5 CH1/2 CV/FS drive mode setup* CH1/2 drive mode setup 0 : Constant voltage 1 : Full swing b4 CH3/5 CV/FS drive mode setup* CH3/5 drive mode setup 0 : Constant voltage 1 : Full swing b3 CH3/5 disable setting CH3/5 disable setting 0 : Disable 1 : Enable b2 to b0 Input PIN selection Defined by input pin selection table No. Address Data b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 CH1/2 DAC CH3 DAC CH1/2 CV/FS CH3 CV/FS CH3/5 Disable Input pin select A1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Input pin selection table Serial Data Bit Input Pin b2 b1 b0 IN1 IN2 IN3 0 0 0 CH1 CH2 CH3 0 0 1 CH1 CH2 CH4 0 1 0 IN1A IN1B IN2A 0 1 1 IN3A IN3B CH4 1 0 0 IN4A IN4B CH3 1 0 1 IN1A IN1B CH4 1 1 0 IN2A IN2B CH4 * : When A0, b [1 , 0] = 01, 10 or 11 If A1, b[5] was set to “1”, then A1, b[4] must also be set to “1”.

DS8750-01 April 2011 www.richtek.com Address <1 0> CH4 DAC & mode setup Data bit Bit name Function b13 to b10 CH4 constant current value setup (RNF voltage) 0 0 0 0 : 3 0 0 m V 0 0 0 1 : 2 9 0 m V 0010 : 280mV 0011 : 270mV 0100 : 260mV 0101 : 250mV 0110 : 240mV 0111 : 230mV 1000 : 220mV 1001 : 210mV 1010 : 200mV 1011 : 190mV 1100 : 180mV 1101 : 170mV 1110 : 160mV 1111 : 150mV b9 to b6 No Use Set prohibition b5 CH4 disable setting CH4 disable setting 0 : Disable 1 : Enable b4 CH4 CC/FS drive mode CH4 drive mode setup 0 : Constant current 1 : Full swing b3 to b0 No Use Set prohibition No. Address Data b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 CH4 DAC No use CH4 Disable CH4 CC/FS No use A2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Address <1 1> Serial data select/Power save/Reset control Data bit Bit name Function b13 to b10 CH1/2 serial input b13 : IN1A b12 : IN1B b11 : IN2A b10 : IN2B b9 to b8 CH3 serial input b9 : IN3A b8 : IN3B b7 to b6 CH4 serial input b7 : IN4A b6 : IN4B b5 to b4 No use Set prohibition b3 PS1 (Power Saving) 0 : All motor channels OFF 1 : All motor channels ON b2 CH1/2 disable* CH1/2 setting 0 : Disable 1 : Enable b1 CH1/2 DCM/STM 0 : DC motor control 1 : STM control b0 S/W Reset 0 : Nothing is done 1 : RESET No. Address Data b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 CH1/2, CH13/23 serial control input CH3 serial control input CH4 serial control input No use PS1 CH1/2 disable CH1/2 DCM/ STM S/W Reset A3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 * (CH1/2 mode setup = 110, 111), (CH1/2 mode setup = 100 and A3 bit1 = “1”)

www.richtek.com DS8750-01 April 2011 Serial Control Input Input Terminal Output Terminal IN*A IN*B IN# OUT*A OUT*B Mode 0 0 X Z Z Off 0 1 L L L Brake 0 1 H H L Forward 1 0 L L L Brake 1 0 H L H Reverse 1 1 X L L Brake PWM Mode 1 Serial and Parallel Control Function Table * : Channel number (* = 1 or 2...) # : Define by “input pin selection table” X : Don't care, H : HIgh level, L : Low level Serial Control Input Input Terminal Output Terminal IN*A IN*B IN# OUT*A OUT*B Mode 0 0 X Z Z Off 0 1 L H L Forward 0 1 H L L Brake 1 0 L L H Reverse 1 0 H L L Brake 1 1 X L L Brake PWM Mode 2 Serial Control Input Input Terminal Output Terminal IN*A IN*B IN# OUT*A OUT*B Mode X 0 X Z Z Off 0 1 L L H Reverse 0 1 H H L Forward 1 1 X L L Brake PWM Mode 3 Serial Control Input Input Terminal Output Terminal IN*A IN*B IN# OUT*A OUT*B Mode X 0 X Z Z Off 0 1 L H L Forward 0 1 H L H Reverse 1 1 X L L Brake PWM Mode 4

DS8750-01 April 2011 www.richtek.com Serial Control Input Output Terminal IN*A IN*B OUT*A OUT*B Mode 0 0 Z Z Off 0 1 H L Forward 1 0 L H Reverse 1 1 L L Brake Serial Mode Input Terminal Output Terminal IN# (IN*A) IN# (IN*B) OUT*A OUT*B Mode L L Z Z Off H L H L Forward L H L H Reverse H H L L Brake Parallel Mode Input Terminal Output Terminal Mode IN1A (IN1) IN1B (IN2) IN2A (IN3) OUT1A OUT1B OUT2A OUT2B CH1 CH2 H H L H L H L Forward Forward L H H Z Z H L Off Forward L H L L H H L Reverse Forward L L H L H Z Z Reverse Off L L L L H L H Reverse Reverse H L H Z Z L H Off Reverse H L L H L L H Forward Reverse H H H H L Z Z Forward Off CH1/2 3-lines stepping motor control (1-2 phase control) Input pin selection table = 010; CH1/2 disable = 1 Input Terminal Output Terminal Mode IN1A (IN1) IN1B (IN2) OUT1A OUT1B OUT2A OUT2B CH1 CH2 H H H L H L Forward Forward L H L H H L Reverse Forward L L L H L H Reverse Reverse H L H L L H Forward Reverse CH1/2 2-lines stepping motor control (2-2 phase control) Input pin selection table = 010

www.richtek.com DS8750-01 April 2011 CH1/2 More control Mode of Stepping Motor Input terminal PWM control (STM 1-2 phase control) CH1/2 mode setup = 000 : PWM Mode 1 Serial Control Input bit Input Terminal Output Terminal Mode IN1A IN1B IN2A IN2B IN1 IN2 OUT1A OUT1B OUT2A OUT2B CH1 CH2 0 0 0 0 X X Z Z Z Z Off Off 0 1 0 1 H H H L H L Forward Forward 0 0 0 1 X H Z Z H L Off Forward 1 0 0 1 H H L H H L Reverse Forward 1 0 0 0 H X L H Z Z Reverse Off 1 0 1 0 H H L H L H Reverse Reverse 0 0 1 0 X H Z Z L H Off Reverse 0 1 1 0 H H H L L H Forward Reverse 0 1 0 0 H X H L Z Z Forward Off 0 1 0 1 L L L L L L Brake Brake 0 0 0 1 X L Z Z L L Off Brake 1 0 0 1 L L L L L L Brake Brake 1 0 0 0 L X L L Z Z Brake Off 1 0 1 0 L L L L L L Brake Brake 0 0 1 0 X L Z Z L L Off Brake 0 1 1 0 L L L L L L Brake Brake 0 1 0 0 L X L L Z Z Brake Off Input terminal PWM control (STM 2-2 phase control) CH1/2 mode setup = 000 : PWM Mode 1 Serial Control Input bit Input Terminal Output Terminal Mode IN1A IN1B IN2A IN2B IN1 IN2 OUT1A OUT1B OUT2A OUT2B CH1 CH2 0 0 0 0 X X Z Z Z Z Off Off 0 1 0 1 H H H L H L Forward Forward 1 0 0 1 H H L H H L Reverse Forward 1 0 1 0 H H L H L H Reverse Reverse 0 1 1 0 H H H L L H Forward Reverse 0 1 0 1 L L L L L L Brake Brake 1 0 0 1 L L L L L L Brake Brake 1 0 1 0 L L L L L L Brake Brake 0 1 1 0 L L L L L L Brake Brake

assigned as “forward direction ”. assigned as “forward direction ”. assigned as “forward direction ”. → OUT3B direction is assigned as “forward direction ”. Figure 3. CH1/3, CH2/3, CH3/5 exclusive control mode Figure 4. CH1/2/3, CH3/5 exclusive control mode

www.richtek.com DS8750-01 April 2011 Serial Control Input Input Terminal Output Terminal IN1A IN1B IN# OUT1A OUT3A Mode 0 0 X Z Z Off 0 1 L H L Forward 0 1 H L L Brake 1 0 L L H Reverse 1 0 H L L Brake 1 1 X L L Brake Serial Control Input Input Terminal Output Terminal IN1A IN1B IN# OUT1A OUT3A Mode X 0 X Z Z Off 0 1 L L H Reverse 0 1 H H L Forward 1 1 X L L Brake Serial Control Input Input Terminal Output Terminal IN1A IN1B IN# OUT1A OUT3A Mode X 0 X Z Z Off 0 1 L H L Forward 0 1 H L H Reverse 1 1 X L L Brake PWM Mode 2 PWM Mode 3 PWM Mode 4 Serial Control Input Output Terminal IN1A IN1B OUT1A OUT3A Mode 0 0 Z Z Off 0 1 H L Forward 1 0 L H Reverse 1 1 L L Brake Serial Mode Serial Control Input Input Terminal Output Terminal IN1A IN1B IN# OUT1A OUT3A Mode 0 0 X Z Z Off 0 1 L L L Brake 0 1 H H L Forward 1 0 L L L Brake 1 0 H L H Reverse 1 1 X L L Brake PWM Mode 1 CH13 Exclusive Control Function Table

DS8750-01 April 2011 www.richtek.com Serial Control Input Input Terminal Output Terminal IN2A IN2B IN# OUT2A OUT3B Mode 0 0 X Z Z Off 0 1 L L L Brake 0 1 H H L Forward 1 0 L L L Brake 1 0 H L H Reverse 1 1 X L L Brake PWM Mode 1 Serial Control Input Input Terminal Output Terminal IN2A IN2B IN# OUT2A OUT3B Mode 0 0 X Z Z Off 0 1 L H L Forward 0 1 H L L Brake 1 0 L L H Reverse 1 0 H L L Brake 1 1 X L L Brake Serial Control Input Input Terminal Output Terminal IN2A IN2B IN# OUT2A OUT3B Mode X 0 X Z Z Off 0 1 L L H Reverse 0 1 H H L Forward 1 1 X L L Brake CH23 Exclusive Control Function Table PWM Mode 2 PWM Mode 3 PWM Mode 4 Input Terminal Output Terminal IN# (IN1A) IN# (IN1B) OUT1A OUT3A Mode L L Z Z Off H L H L Forward L H L H Reverse H H L L Brake Parallel Mode Serial Control Input Input Terminal Output Terminal IN2A IN2B IN# OUT2A OUT3B Mode X 0 X Z Z Off 0 1 L H L Forward 0 1 H L H Reverse 1 1 X L L Brake

www.richtek.com DS8750-01 April 2011 Input Terminal Output Terminal IN# (IN1A) IN# (IN1B) OUT2A OUT3B Mode L L Z Z Off H L H L Forward L H L H Reverse H H L L Brake Parallel Mode Input Terminal Output Terminal Mode IN1A (IN1) IN1B (IN2) IN2A (IN3) OUT1A OUT3A OUT2A OUT3B CH13 CH23 H H L H L H L Forward Forward L H H Z Z H L Off Forward L H L L H H L Reverse Forward L L H L H Z Z Reverse Off L L L L H L H Reverse Reverse H L H Z Z L H Off Reverse H L L H L L H Forward Reverse H H H H L Z Z Forward Off CH13/23 Exclusive Control Function Table CH13/23 3-lines stepping motor control (1-2 phase control) Input pin selection table = 010; CH1/2 disable = 1 Input Terminal Output Terminal Mode IN1A (IN1) IN1B (IN2) OUT1A OUT3A OUT2A OUT3B CH13 CH23 H H H L H L Forward Forward L H L H H L Reverse Forward L L L H L H Reverse Reverse H L H L L H Forward Reverse CH13/23 2-lines stepping motor control (2-2 phase control) Input pin selection table = 010 Serial Control Input Output Terminal IN2A IN2B OUT2A OUT3B Mode 0 0 Z Z Off 0 1 H L Forward 1 0 L H Reverse 1 1 L L Brake Serial Mode

DS8750-01 April 2011 www.richtek.com More Control Mode of Stepping Motor Input terminal PWM control (STM 1-2 phase control) CH1/2 mode setup = 000 : PWM Mode 1 Serial Control Input bit Input Terminal Output Terminal Mode IN1A IN1B IN2A IN2B IN1 IN2 OUT1A OUT3A OUT2A OUT3B CH13 CH23 0 0 0 0 X X Z Z Z Z Off Off 0 1 0 1 H H H L H L Forward Forward 0 0 0 1 X H Z Z H L Off Forward 1 0 0 1 H H L H H L Reverse Forward 1 0 0 0 H X L H Z Z Reverse Off 1 0 1 0 H H L H L H Reverse Reverse 0 0 1 0 X H Z Z L H Off Reverse 0 1 1 0 H H H L L H Forward Reverse 0 1 0 0 H X H L Z Z Forward Off 0 1 0 1 L L L L L L Brake Brake 0 0 0 1 X L Z Z L L Off Brake 1 0 0 1 L L L L L L Brake Brake 1 0 0 0 L X L L Z Z Brake Off 1 0 1 0 L L L L L L Brake Brake 0 0 1 0 X L Z Z L L Off Brake 0 1 1 0 L L L L L L Brake Brake 0 1 0 0 L X L L Z Z Brake Off Input terminal PWM control (STM 2-2 phase control) CH1/2 mode setup = 000 : PWM Mode 1 Serial Control Input bit Input Terminal Output Terminal Mode IN1A IN1B IN2A IN2B IN1 IN2 OUT1A OUT3A OUT2A OUT3B CH13 CH23 0 0 0 0 X X Z Z Z Z Off Off 0 1 0 1 H H H L H L Forward Forward 1 0 0 1 H H L H H L Reverse Forward 1 0 1 0 H H L H L H Reverse Reverse 0 1 1 0 H H H L L H Forward Reverse 0 1 0 1 L L L L L L Brake Brake 1 0 0 1 L L L L L L Brake Brake 1 0 1 0 L L L L L L Brake Brake 0 1 1 0 L L L L L L Brake Brake

www.richtek.com DS8750-01 April 2011 Input terminal forward/reverse (STM 2-2 phase control) CH1/2 mode setup = 010 : PWM Mode 3 Serial Control Input bit Input Terminal Output Terminal Mode IN1A IN1B IN2A IN2B IN1 IN2 OUT1A OUT3A OUT2A OUT3B CH13 CH23 0 0 0 0 X X Z Z Z Z Off Off 0 1 0 1 H H H L H L Forward Forward 0 1 0 1 L H L H H L Reverse Forward 0 1 0 1 L L L H L H Reverse Reverse 0 1 0 1 H L H L L H Forward Reverse Serial Control Input bit Output Terminal Mode IN1A IN1B IN2A OUT1A OUT3A OUT2A OUT3B CH13 CH23 1 1 0 H L H L Forward Forward 0 1 1 Z Z H L OFF Forward 0 1 0 L H H L Reverse Forward 0 0 1 L H Z Z Reverse Off 0 0 0 L H L H Reverse Reverse 1 0 1 Z Z L H Off Reverse 1 0 0 H L L H Forward Reverse 1 1 1 H L Z Z Forward Off Serial Control (STM 1-2 phase drive) CH1/2 mode setup = 100 : serial mode; DCM/STM mode setup = 1 CH3/5 Exclusive Control Function Table Serial Control Input Input Terminal Output Terminal IN3A IN3B IN# OUT3A OUT5A Mode 0 0 X Z Z Off 0 1 L L L Brake 0 1 H H L Forward 1 0 L L L Brake 1 0 H L H Reverse 1 1 X L L Brake Serial Control Input Input Terminal Output Terminal IN3A IN3B IN# OUT3A OUT5A Mode 0 0 X Z Z Off 0 1 L H L Forward 0 1 H L L Brake 1 0 L L H Reverse 1 0 H L L Brake 1 1 X L L Brake PWM Mode 2 PWM Mode 1

DS8750-01 April 2011 www.richtek.com Serial Control Input Input Terminal Output Terminal IN3A IN3B IN# OUT3A OUT5A Mode X 0 X Z Z Off 0 1 L L H Reverse 0 1 H H L Forward 1 1 X L L Brake PWM Mode 3 Serial Control Input Input Terminal Output Terminal IN3A IN3B IN# OUT3A OUT5A Mode X 0 X Z Z Off 0 1 L H L Forward 0 1 H L H Reverse 1 1 X L L Brake PWM Mode 4 Serial Control Input Output Terminal IN3A IN3B OUT3A OUT5A Mode 0 0 Z Z Off 0 1 H L Forward 1 0 L H Reverse 1 1 L L Brake Serial Mode Input Terminal Output Terminal IN# (IN1A) IN# (IN1B) OUT3A OUT5A Mode L L Z Z Off H L H L Forward L H L H Reverse H H L L Brake Parallel Mode

DS8750-01 April 2011 www.richtek.com Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the ri ght to make any change in circuit design, specification or other related things if necessary without notice at any time. No third party intellectual property inf ringement of the applications should be guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications i s assumed by Richtek. Richtek Technology Corporation Taipei Office (Marketing) 5F, No. 95, Minchiuan Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)86672399 Fax: (8862)86672377 Email: marketing@richtek.com Outline Dimension Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.150 0.250 0.006 0.010 D 2.900 3.100 0.1 14 0.122 D2 1.650 1.750 0.065 0.069 E 2.900 3.100 0.1 14 0.122 E2 1.650 1.750 0.065 0.069 e 0.400 0.016 L 0.350 0.450 0.014 0.018 W-Type 20L QFN 3x3 Package Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. DETAIL A Pin #1 ID and Tie Bar Mark Options 2 2