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| Ordering number: EN 5197 Monolithic Linear IC LA5612 Multifunctional Voltage Regulator for TVs and VCRs with BS Tuner Applications Package Dimensions unit : mm . Audiovisual equipment, VCRs and TVs with BS tuner Features 3107-SIP13H [LA5612] . Low-saturation regulator (ON/OFF function built in) . Control amplifier built in. . Current limit and thermal limit circuits built in . Reverse current prevention provided (V 1) O SANYO : SIP13H Specfications Maximum Ratings at Ta = 25 C Parameter Maximum input voltage Allowable power dissipation Thermal resistance between junction and case Operating temperature Storage temperature Symbol VIN1 max VIN2 max Pd max j-c Topr Tstg VIN 1^VIN 2 No heat sink Conditions Ratings 22 VIN1 2 4.7 -20 to +80 -40 to +150 W C/W C C Unit V Operating Conditions at Ta = 25 C Parameter Input voltage Output current 1 Output current 2 Output current 3 Symbol VIN1 VIN2 IO1 IO2 IO3 Conditions Ratings 11.5 to 20 6.2 to 20 10 to 360 10 to 420 10 to 420 Unit V V mA mA mA SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 92895HA (II) No.5197-1/5 LA5612 Operating Characteristics at Ta = 25 C, See specified Test Circuit. Parameter Symbol Conditions min typ [No-load mode] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO1 to IO3 = 0 mA IIN1 7 Quiescent current IIN2 8 [Regulator 1] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO1 = 300 mA Output voltage 1 VO1 13.7 14.5 Dropout voltage VDROP1 0.5 Line regulation nVOLN1 16.5 V % VIN1 % 20.5 V Load regulation nVOLD1 10mA % IO1 % 300 mA Output inflow current IO1 IN 22 V applied to pin VO1, no-load mode Peak output current IOP1 360 Output short-circuit current IOSC1 45 Ripple rejection Rrej1 50 Output low-level voltage VO1 OFF VEN1 = 1 V, when VO1 is off Output voltage/temperature nVO1/nTa 0.5 coefficient [Regulator 2] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO2 = 350 mA Output voltage 2 VO2 4.80 5.05 Dropout voltage VDROP2 0.5 Line regulation nVOLN2 6 V % VIN2 % 7.2 V Load regulation nVOLD2 100 mA % IO2 % 350 mA Peak output current IOP2 420 Output short-circuit current IOSC2 65 Ripple rejection Rrej2 50 Output low-level voltage VO2 OFF VEN2 = 1 V, when VO2 is off Output voltage/temperature nVO2/nTa 0.5 coefficient [Regulator 3] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V, IO3 = 350 mA Output voltage 3 VO3 4.80 5.05 Dropout voltage VDROP3 0.5 Line regulation nVOLN3 6 V % VIN2 % 7.2 V Load regulation nVOLD3 100 mA % IO3 % 350 mA Peak output current IOP3 420 Output short-circuit current IOSC3 65 Ripple rejection Rrej3 50 Output low-level voltage VO3 OFF VEN2 = 1 V, when VO3 is off Output voltage/temperature nVO3/nTa 0.5 coefficient [Output on/off control] VIN1 = 16.5 V, VIN2 = 6.6 V VEN1 H VO1: on, VEN1 < 22 V Output on control voltage 3.0 VEN2 H VO2, VO3: on, VEN2 < 22 V VEN1 L VO1: off Output off control voltage VEN2 L VO2, VO3: off [Amplifier A] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V Input offset voltage VIOA Input bias current IBA Output current (source) IOA SOURCE VINA+ = 1 V, VINA- = 0 V 10 Output current (sink) IOA SINK VINA+ = 0 V, VINA- = 1 V 10 [Amplifier B] When VO1, VO2, VO3 is on : VEN1 = 3 V, VEN2 = 3 V, VIN1 = 16.5 V, VIN2 = 6.6 V Output current (source) IOB SOURCE 10 max 14 16 15.2 1.0 140 150 500 180 0.2 Unit mA mA V V mV mV A mA mA dB V mV/ C 5.30 1.0 20 100 210 0.2 V V mV mV mA mA dB V mV/ C 5.30 1.0 20 100 210 0.2 V V mV mV mA mA dB V mV/ C VIN1 1.0 7 250 V V mV nA mA mA mA No.5197 - 2/5 LA5612 Pd max -- Ta Allowable power dissipation, Pd max -- W Infinite heat sink Aluminum heat sink mounting conditions Tightening torque: 4 kg .cm With plain washer and silicone grease applied Note 1 No heat sink Ambient temperature, Ta -- C Note 1: The tightening torque referred to in the above figure is a condition specified for the heat dissipation characteristics and not a working condition to be met when mounting the heat sink. Test Circuit or its equivalent Pin Functions No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Symbol VIN1 VO1 EN1 VINA(+) VINA(-) VOA GND VOB VINB(-) EN2 VO3 VO2 VIN2 Function High voltage input. 14.5 V/300 mA regulator, with reverse current prevention. Regulator 1 on/off control. High active. Amplifier A noninverting input. Amplifier A inverting input. Amplifier A output. Substrate of the LA5612 (minimum potential). Amplifier B output (5 V regulator supported by external NPN transistor). Amplifier B inverting input (5 V regulator supported by external NPN transistor). Regulator 2 and regulator 3 on/off control. High active. 5.05 V/350 mA regulator. 5.05 V/350 mA regulator. Low-voltage input. No.5197 - 3/5 LA5612 Function Table Function Input line Current limit Thermal limit On/off control (V: built in, x: not built in) Circuit block VO1 VIN1 V V EN1 V O2 VIN2 V V EN2 VO3 VIN2 V V EN2 AMP A VIN1 x x x AMP B VIN1 x x x Usage Notes (1) Apply voltage to the voltage input pins on condition that VIN1 ^ VIN2. (2) Apply voltage simultaneously to VIN1 and VIN2. Do not use the LA5612 with voltage applied to only one of these pins. (3) Since the amplifiers do not have current limit protection such as an external NPN transistor, provide this protection in each application. Logic Table Conditions : when VIN1^ VIN2 (at VIN1 ^ 4 V, VIN2 ^ 4 V) EN1,EN2 L or open H VO1, VO2, VO3 L H (1) ``H'' for EN denotes high level; ``L'' denotes low level or open. (2) ``H'' for VO denotes output ON voltage; ``L'' denotes output OFF voltage. (3) Each output voltage corresponds to each EN and is controlled independently. (EN1 is coupled with VO1, and EN2 with VO2 and VO3.) Thermal Design Notes (1) In the LA5612, the junction temperature (Tj) at which thermal shutdown is activated is approximately equal to 130C. (2) Consequently, the operating range of REG1, REG2 and REG3 with the thermal shutdown function is restricted by the thermal shutdown characteristics (typical value) shown in the figure below. (3) The thermal shutdown characteristics vary 20C or so. Since thermal shutdown is liable to occur with inadequate heat dissipation, sufficient consideration must be given to the heat dissipation design. Thermal Shutdown Characteristics Allowable power dissipation, Pd -- W Typical Characteristics Ambient temperature, Ta -- C No.5197 - 4/5 LA5612 Equivalent Circuit Block Diagram and Sample Application Circuit Start-up Thermal shutdown detection Reverse current prevention External Tr 5 V output Application Notes (1) (2) (3) (4) The input line for AMP A and AMP B is shared with VIN1. AMP A and AMP B are on in normal use. The output voltage is 5 V when an external NPN transistor has been added. Depending on the type, load current and connection position (distance from the LA5612) of the external NPN transistor, the value of a capacitor connected between emitter and ground must be changed for stable operation. (5) The capacitors connected between each pin and GND are bypass capacitors for preventing oscillation: as such, they must be positioned as close to the LA5612 as possible in order to stabilize operation. No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO 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 September, 1995. Specifications and information herein are subject to change without notice. No.5197 - 5/5 |
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