LB1941GP

Ordering number : ENA0610 Monolithic Linear IC LB1941GP Overview For Digital Cameras Constant Current Forward/Reverse Driver The LB1941GP is a single-channel forward/reverse driver IC that provides a constant current control function. Its low-saturation output makes it appropriate for voice coil motor control, and it is optimal for use as the shutter driver IC in digital cameras. Functions • High-performance dual operational amplifier • Constant current control (IO = 400 mA when Rf = 0.5Ω) • Built-in thermal protection circuit • Includes a rapid charge/rapid discharge circuit for stable shutter operation. • Built-in reference voltage circuit (0.2 V typical) • Ultraminiature package (VCT16 (2.6mm × 2.6mm) Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Output current Output applied voltage Input applied voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IO max VO max VIN max Pd max Topr Tstg IN1, IN2 Mounted on a specified board.* Conditions Ratings -0.3 to +10.5 600 -0.3 to VCC+0.3 -0.3 to +10.5 0.7 -20 to +75 -55 to +150 Unit V mA V V W °C °C Note*: Mounted on a board: 50×40×10.8 mm3: glass epoxy four-layer. Allowable Operating Range at Ta = 25°C Parameter Function-guaranteed voltage range Constant-current set range Input low level voltage Input high level voltage Symbol VOPR IOUT VIL VIH Set with RFG-GND resistance IN1, IN2 IN1, IN2 Conditions Ratings 2.5 to 10 50 to 500 -0.3 to +0.5 2.0 to 10 Unit V mA V V ■ Any and all SANYO Semiconductor products described or contained herein do not have specifications ■ SANYO Semiconductor assumes no responsibility for equipment failures that result from using products that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. 12407 MS PC 20060518-S00006 No.A0610-1/4 LB1941GP Electrical Characteristics at Ta = 25°C Parameter Standby Current dissipation Symbol ISTB VOUT11 VOUT12 VOUT1 Output saturation voltage 2 * VOUT21 VOUT22 VOUT2 Output constant current 1 Output constant current 2 * Temperature dependence of output constant current (reference Ta = 25°C) Operating current dissipation Thermal protection operating temperature Control input circuit Control pin maximum input current IIH1 IIH2 IIL VIH = 5.5V, VCC = 5.5V VIH = 10V, VCC = 10V VIL = GND -1 80 145 100 200 0 µA µA µA ICC TSD VCC = 4V, RL = 0Ω, (No load, full drive) * 150 14 180 21 210 mA °C IOUT1 IOUT2 ∆IO VCC = 10V VCC = 3V, IO = 200mA (Lower side) VCC = 3V, IO = 200mA (Upper side) VCC = 3V, IO = 200mA (Upper + Lower side) VCC = 4V, IO = 500mA (Lower side) VCC = 4V, IO = 500mA (Upper side) VCC = 4V, IO = 500mA (Upper + Lower side) VCC = 4V, RL = 3Ω, RF = 1Ω VCC = 4V, RL = 3Ω, RF = 0.5Ω VCC = 4V, RL = 3Ω, RF = 0.5Ω * (Ta = –10 to +60°C) 190 375 -2 0.08 0.12 0.20 0.25 0.35 0.60 200 400 Conditions Ratings min typ max 1.0 Unit mV Constant-current H bridge drive circuit Output saturation voltage 1 0.15 0.23 0.35 0.38 0.52 0.90 210 424 +2 µA V V V V V mA mA % Note*: Design guarantee: Characteristics shown here are design targets and measurement with independent unit is not made before shipment. Package Dimensions unit : mm (typ) 3318 1.0 Pd max -- Ta Specified board: 50×40×0,8mm3 Fou-layer (2S2P), glass epoxy Specified board TOP VIEW 2.6 SIDE VIEW BOTTOM VIEW (0.125) (0.13) Allowable power dissipation, Pd max -- W 0.8 0.7 0.6 (C0.116) 2.6 0.4 0.42 0.4 2 LASER MARKED INDEX 0.5 (0.55) 1 16 0.2 0 --20 0 20 40 60 80 100 SIDE VIEW Ambient temperature, Ta -- °C 0.8 MSG01470 (0.035) 0.25 SANYO : VCT16(2.6X2.6) No.A0195-2/4 LB1941GP Pin Assignment NC OUT1 OUT2 NC 16 NC VCC NC NC 1 2 15 14 13 12 RFG 11 RFS LB1941GP 3 4 5 NC 6 IN1 7 IN2 8 NC 10 GND 9 NC Top view Block Diagram RL OUT1 OUT2 VCC Reference voltage + 0.2V -Constant current control amplifier IN1 P U IN2 Logic circuit C Boost charge circuit Boost discharge circuit GND Thermal protection circuit FC RFS RFG RF 0.01µF ILB01540 No.A0195-3/4 LB1941GP Truth Table Input IN1 L H L H IN2 L L H H Output OUT1 OFF H L OFF OUT2 OFF L H OFF Standby 1* Forward rotation Reverse rotation Standby 2* Mode Cautions for use Standby states 1 and 2 in the above truth table differ as follows: Standby state 1 ............All circuits in IC are not operating and the current dissipation is almost zero. Standby state 2 ............The constant-current control amplifier output in IC is in the full drive condition. Both OUT1 and OUT2 are OFF. The current dissipation is a few mA. During mode transfer from the standby state 1 to forward (reverse) rotation, the current rises from the output current zero condition to the required constant current value. On the other hand, during mode transfer from the standby state 2 to forward (reverse) rotation, full drive is applied once to the output, then the current lowers to the required current value. Therefore, select the standby 1 state when putting IC in the standby state. A typical drive sequence is shown in the figure below. Reverserotation Fowardrotation Reverserotation Standby Standby IN1 IN2 Boost charge and discharge circuits In order to keep the output response time constant during mode transfer from the standby state to forward (reverse) rotation, this IC incorporates boost charge and discharge circuits for external capacitor connected to the FC pin. The external capacitor connected to the FC pin is for output phase compensation (to suppress oscillation), for which 0.01 to 0.1µF is recommended. Note that increase in the capacitor value results in increase in the time necessary for the constant current control to rise. 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. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of January, 2007. Specifications and information herein are subject to change without notice. PS No.A0195-4/4