View LB1941GP_4372606.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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 = 0.5) * 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 x 2.6mm)
Specifications
Maximum Ratings at Ta = 25C
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: 50x40x10.8 mm3: glass epoxy four-layer.
Allowable Operating Range at Ta = 25C
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 = 25C
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 = 25C) 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 A A A ICC TSD VCC = 4V, RL = 0, (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 = 3, RF = 1 VCC = 4V, RL = 3, RF = 0.5 VCC = 4V, RL = 3, RF = 0.5 * (Ta = -10 to +60C) 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 A 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: 50x40x0,8mm3 Fou-layer (2S2P), glass epoxy
TOP VIEW 2.6
SIDE VIEW
BOTTOM VIEW (0.125) (0.13)
Allowable power dissipation, Pd max -- W
0.8
Specified board
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
0.01F
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 0.1F 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. In the event that any or all SANYO Semiconductor products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, of otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor product that you intend to use. 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

▲Up To Search▲

Price & Availability of LB1941GP

	To Download LB1941GP Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .