Ordering number : EN7895B LB8650T Monolithic Digital IC Driver for Digital Still Cameras Overview LB8650T is a driver for digital still cameras. Features • Two direct nickel hydride batteries for digital cameras embedded in one chip. (1) Constant voltage control for AF - Stepping motor driver. 1-2 phase excitation, 2 phase excitation possible. (2) Constant current control for SH - Solenoid coil driver → Built-in start-up correction circuit. • No standby current consumption (or zero). • Low voltage driving possible (1.9V to). • Low saturation output. • Built-in thermal protection circuitry. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings VB power source Unit Maximum power source voltage VB max Maximum input applied voltage VIN max Maximum output applied voltage VOUT max 10.5 V Maximum output current IO max per CH 600 mA Allowable power dissipation Pd max Mounted on a specified board (*1) 800 mW Operating temperature Topr -10 to +80 °C Storage temperature Tstg -55 to +150 °C 10.5 V 10.5 V (*1) Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy resin. Allowable Operating Range at Ta = 25°C Parameter Symbol Power source voltage range VB Input pin high level voltage VINH Input pin low level voltage VINL Constant voltage setting input range VOC Conditions (*2) VOC Ratings Unit 1.9 to 10 V 1.8 to 10 V -0.3 to 0.4 V 0.1 to VB V (*2) No hierarchical relationship between VB and VIN. 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D2706 TI IM B8-6047 No.7895-1/6 LB8650T Electrical Characteristics at Ta = 25°C, VB = VCC = 2.4V, Rf = 0.5Ω Parameter Symbol Ratings Conditions min Standby current ICC0 VB = VCC = 4.0V Operating current ICC1 consumption ICC2 IB1 IN1 = IN3 = 2V, VC1 = 0.4V Reference voltage Vref Iref = -1mA Control pin iInput current IIN VIN = 5.0V Overheat protection THD Design guaranteed (*3) typ Unit max 0.1 5.0 IN1 = IN3 = 2V, VC1 = 0.4V 3.5 6.0 IN4 = IN5 = 2V, ICI = 0.2V 3.5 6.0 consumption mA 5.5 9.0 905 935 mV 60 90 µA 150 180 210 °C 1.57 1.66 1.74 V 875 operation temperature µA Constant current stepping motor driver for AF/STP (OUT1, 2, 3, 4, 5P) Output constant voltage VO1 Output saturation voltage VC1 = 0.4V VSAT1 IO = 0.2A (upper) 0.2 0.3 VSAT2 IO = 0.2A (lower) 0.15 0.22 IO1 IC1 = 0.20V, Rf = 1Ω 178 190 202 IO2 IC1 = 0.20V, Rf = 1Ω, HOLD mode 113 126 140 VSAT2 IO = 0.25A (lower) 0.15 0.22 V SH driver (OUT5N) Output constant current Output saturation voltage 2 mA V (*3) For the characteristic within the guaranteed temperature range, shipping check is performed at Ta = 25°C. For all temperature range, these are design guarantee and are not tested. Package Dimensions Pin Assignment unit : mm (typ) 3260A 6.5 0.5 6.4 13 4.4 24 12 1 0.5 0.15 0.22 VC1 1 24 VCC VC2 2 23 VB FC 3 22 P-GND ICI 4 21 OUT1 VREF 5 20 OUT2 S-GND 6 IN1 7 18 OUT4 IN2 8 17 P-GND IN3 9 16 OUT5N 0.08 1.2max (1.0) (0.5) SANYO : TSSOP24(225mil) LB8650T 19 OUT3 IN4 10 15 RFG IN5 11 14 OUT5P NC 12 13 VB Top view ILB01596 (Note) P-GND and VB, both 2-pins are connected. No.7895-2/6 LB8650T Pd max - Ta Allowable power dissipation, Pd max - mW 900 Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy resin 800 700 600 500 448 400 300 200 100 0 --20 0 20 40 60 80 Ambient temperature, Ta - °C 100 ILB01605 Truth Table (for AF/SH) Input Output Mode IN1 IN2 IN3 IN4 IN5 OUT1 OUT2 OUT3 OUT4 OUT5P OUT5N Vref ICI L L L L L - - - - - - - - H L L L H L - - H L H L H L H L L L H L - - H L L H H L L H H L L H L L L H - - - - 0.9V L L H L H L H L H L L L L H - - L H H L L H H L L H H H * * H H L * H AF or AE Brake L L - - - L H H - L H L L H - L H H - L H L L H - H - - Standby - L SH-ready - SH - Hold 0.9V 0.6V * : Don’t care. - : Output OFF. H : Constant voltage control with the constant voltage output (VC pin input voltage) 4 times. OUT1, 2, 3, and 4 outputs are set by VC1 input. OUT5P output is set by VC2 input. It is necessary to place the oscillation-stopping capacitor (0.01µF) between the output pins. L : The formula for calculating the constant current output setting is as given below. IRFG = (ICI pin input voltage) / (RFG resistance value+0.05Ω) This 0.05Ω is for a common impedance of the output Tr emitter which drives constant current in the RFG pin and the sensing wiring for the constant current control amplifier. No.7895-3/6 LB8650T Application Example (1) Solenoid (constant current drive), stepping motor (constant voltage drive) SH/SOL OUT5N VB VC1 OUT4 Vref 0.01µF R1 OUT3 ICI C1 R2 RFG FC VB P-GND Rf 0.01 to 0.1µF OUT1 OUT2 AF/STP ILB01606 Timing chart for solenoid SH ICI Rise correction VB is high. (Without C1) VB is low. (Without C1) SOL/IO Rise correction coil current SH preparing SH closing HOLD SH closing operation ILB01607 (1) ICI pin voltage is set to 0V in shutter ready mode of *LLLH input. (2) At *LLHH input, solenoid is driven by constant current control. The ICI pin input voltage is set with the decay time constant to be larger than the coil decay time constant by using the external CR and the rise correction occurs with respect to the coil wave. By doing this, stable shutter operation can be carried out with respect to the power source variations. (Note) ICI pin rise compensation is made without C1 and the rise waveform of coil current is made at decrease of VB power. C1 is set to the time constant lower than this waveform. (3) At *HLHH input, solenoid current is controlled by 2/3, and it becomes HOLD state. • Constant current value setting: ICI voltage/Rf (Note1) Consider the FC capacitor between 0.01 to 0.1µF to set the capacitance value that ensure no oscillation problem at transfer to the HOLD mode. In particular, the solenoid with high inductance should have an allowance for capacitance. No.7895-4/6 LB8650T (2) Solenoid (constant voltage drive), stepping motor (constant voltage drive) VB VC1 VC2 OUT4 OUT5P 0.01 to 0.1µF 0.01µF OUT3 SH/SOL P-GND VB OUT1 OUT2 AF/STP ILB01608 The shutter mode is ON at *LLLH input. The solenoid is driven by constant voltage at LHLH. The constant voltage output is 4 times the VC2 pin input voltage. The voltage is controlled by 2/3 in HOLD mode. OUT1, 2, 3, and 4 outputs are set by VC1 input, and it becomes 4 times the constant voltage output. Internal equivalent circuit diagram SH/VCM VCC OUT5P OUT5N VB VB VCC VC2 VC1 IN1 OUT3 IN2 CPU IN3 OUT4 Constant current control Logic unit IN4 RFG IN5 Quick charge circuitry Constant voltage output VB RFG Quick discharge circuitry S-GND OUT1 OUT2 VC2 VC1 Vref ICI P-GND FC Solenoid SH ; 0.01 to 0.1µF Voice coil SH ; 0.01 to 0.1µF ILB01609 No.7895-5/6 LB8650T Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. 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Specifications and information herein are subject to change without notice. PS No.7895-6/6