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TD62445FN
TOSHIBA BIPOLAR DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TD62445FN
LOW-SATURATION-TYPE SINK DRIVER WITH 4-CIRCUIT OVER-CURRENT DETECTION FUNCTION
The TD62445FN is a sink driver with over-current detector circuits. Each of four circuits can setting the limit current. Using an internal comparator, the TD62445FN detects over-current by comparing the current output through the external resistors as voltage. Over current detection is detected by the ERR terminal which is an open collector, comes on. Construct a system so that the input signal turns off immediately the ERR pin comes on.
FEATURES
l Includes current limiter circuits: By connecting external resistors, each bit can be set to any limit current value.
Weight: 0.08 g (Typ.) l Includes an error detection signal filter pin: Connecting any capacitor between the LP pin and the GND filters the internal comparator detection signal and outputs this to the ERR pin. l Over-current monitor detection output: Includes an ERR pin output to warn when current exceeds the limit. Construct a system so that the input signal turns off immediately the ERR pin comes on (open collector). l Common input pin (CO-IN (pin 4)) : Using this pin, the four over-current detector circuits can be forcibly turned off together. l Low-saturation-type output (open collector): The voltage drop between the collector and emitter is VOL1 = 0.4 V (max) @ IO = 100 mA. l Supply voltage l Input is TTL compatible. l Ultra-compact package l Output rating l Packing : SSOP 18 pins (0.65mm pitch) : VCEO = 30 V, IO = 150 mA / ch : Embossed taping only : VCC = 4.5 to 5.5
PIN CONNECTION (TOP VIEW)
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EQUIVALENT CIRCUIT DIAGRAM (Showing One Circuit)
l When the output pins of this IC are connected to the load power supply, over-current may flow to the outputs. While the device includes an over-current detection function, the device is not designed for applications where the output pins and load power supply are intentionally connected. l Be sure to use the device with the NF1 to 4 and the GND pins connected via resistors or directly connected. Do not use with the NF1 to 4 pins open. This also applies to unused channels. If the pins are not connected, the operation of the over-current detection function is unstable. Note that if the NF1 to 4 and GND pins are directly connected, the over-current detection function does not operate. l A parasitic diode is installed between the GND and output pins. While current is supplied to this diode, other circuit outputs may come on or be otherwise affected. If this phenomenon adversely affects the operation of the device, Toshiba recommends connecting an external diode.
TRUTH TABLE
IN1~4 L H H X CO-IN H H H L OUT1~4 OFF ON ON OFF VOLTAGE BETWEEN NF1 TO 4 AND GND 0V 0.3 V max 0.3 V min 0V ERR OFF OFF ON OFF
Note:
The above comparator circuit assumes some resistance connected between the NF1 to 4 and GND pins when the circuit operates.
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PIN DESCRIPTION
PIN No. 1, 3, 5, 7 2 4 6 8 9 10 17, 15, 13, 11 18, 16, 14, 12 PIN NAME IN1 to 4 VCC CO-IN LP ERR GND COM NF1 to 4 OUT1 to 4 FUNCTION Driver input pins. TTL compatible input level. At high level the output is on; at low level the output is off. Power supply voltage pin. Output control pin. When high the output operates in accordance with input logic; when low the output is forcibly turned off regardless of the input logic. CR filter circuit pin. Connecting a capacitor to the GND creates a filter for the over-current detection signal from the comparator. When not in use, leave open. Over-current detection signal output pin. Comes on when excess current is detected. Normally, set to high impedance. GND pin. Clamp diode's common cathode pin. Resistor connecting pins for over-current detection setting. By connecting resistors between these pins and GND, the detection level can be set separately for each circuit. Open collector output pins.
MAXIMUM RATINGS
CHARACTERISTICS Power Supply Voltage COM Pin Voltage Output Voltage ERR Pin Output Voltage Output Sink Current ERR Pin Sink Current Input Voltage NF Pin Voltage LP Pin Voltage Clamp Diode Reverse Voltage Clamp Diode Forward Current Output Parasitic Diode Forward Current Power Dissipation Operating Temperature Storage Temperature SIGNAL VCC VCOM VCEO VERR IOUT IERR VIN VIN (NF) VIN (LP) Vr1 If1 If2 PD (Note) Topr Tstg RATING 7.0 30.0 30.0 7.0 0~150 10 -0.3~VCC + 0.3 -0.3~1.0 -0.3~VCC + 0.3 30 150 100 960 -10~85 -55~150 UNIT V V V V mA mA V V V V mA mA mW C C
Note:
When the device is mounted on a PCB (with one surface 50 x 50 x 1.6 mm Cu 40% glass epoxy) When operating at an ambient temperature of 25C or higher, derate the power dissipation at 7.6 mW / C.
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(Unless otherwise specified, VCC = 5.0 V, Ta = -10 to 85C)
CHARACTERISTIC Power Supply Voltage Output Voltage SYMBOL VCC VCEO VERR IOUT IERR VIN PD1 PD2 ERR VCC = 5.0V : IN1~4, CO-IN, LP Ta = 60C Ta = 85C OUT1~4 ERR TEST CONDITION MIN 4.5 0 0 0 0 0 TYP. 5.0 MAX 5.5 30.0 VCC + 0.3 120 8 VCC 0.69 0.50 UNIT V V V mA mA V W / IC W / IC
RECOMMENDED OPERATING CONDITIONS
Output Current Input Voltage Power Dissipation
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VCC = 5.0 V 10%, Ta = -10 to 85C, VIN (NF) = GND)
CHARACTERISTIC Operating Power Supply Voltage SYMBOL VCC IOleak1 Output Leakage Current IOleak2 VOL1 VOL2 VI+ Input Voltage VIH VIL IIH Input Current IIL1 IIL2 Power Supply Current When Not Operating Power Supply Current When Operating Clamp Diode Forward Voltage Clamp Diode Reverse Voltage ICC ICCopr Vf1 Vr1 tPDIO1 (tpLH) Input / Output Delay Time tPDIO1 (tpHL) 6 1 2 3 3 2 1 2 1 1 4 4 5 1 6 TEST CIR- CUIT 1 TEST CONDITION VCE = 30 V, VIN = 0 V, Ta=25C: OUT1~4 VCE = 7.0V, VNF = 0 V, Ta = 25C : ERR IOUT = 100 mA, RNF = 0 : OUT1~4 IOL = 10 mA : ERR VERR = "L", Ta = -10~85C : NF1~4 IN1~4, CO-IN NF1~4, CO-IN VIN = 2.5 V, Ta = 25C: IN1~4 VIN = 0.7 V, Ta = 25C: IN1~4 VIN = 0.7 V, Ta = 25C: CO-IN VIN = 0.7 V: CO-IN, IN1~4, Ta = 25C All outputs off VIN = 2.5 V, IOUT = 150 mA, Ta = 25C All outputs on If = 100 mA: OUT1~4 to COM Ir = 100 A: COM to OUT1~4 Ta = 25C, VCE = 30 V, IOUT = 150 mA, CL = 10 pF: IN1~4 to OUT1~4 MIN 4.5 0 0 0 0 0.25 2.50 30 TYP. 5.0 0.15 0.20 0.30 +0.5 +0.1 -1.0 8 40 1.20 (Note) 0.25 (Note) 0.40 MAX 5.5 100 A 50 0.40 0.60 0.35 0.70 +0.1 +0.1 -3.4 10 70 2.00 (Note) 1.25 (Note) 2.00 mA / IC mA / IC V V mA V UNIT V
Output Saturation Voltage
V
s
Note:
The switching characteristic values indicate the guaranteed design limits.
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CHARACTERISTIC SYMBOL tPDIO2 (tpLH) tPDIO2 (tpHL) Input / Output Delay Time tPDIO3 (tpLH) tPDIO3 (tpHL) (tpLH) Output Rise Time trERR 7 6 6 Ta = 25C, VCE = 30 V, IOUT = 150 mA, CL = 50 pF: CO-IN to OUT1~4 Ta = 25C, VCE = 30 V, IOUT = 150 mA, CL = 50 pF, 10%-90%: OUT1~4 Ta = 25C, VERR = 5.0 V, IOL = 10 mA, CL = 10 pF, 10%-90%: ERR Ta=25C, VCE = 30 V, IOUT = 150 mA, CL = 50 pF, 90%-10%: OUT1~4 Ta = 25C, VERR = 5.0 V, IOL = 10 mA, CL = 10 pF, 90%-10%: ERR TEST CIR- CUIT 7 7 TEST CONDITION Ta = 25C, VERR = 5.0 V, IOL = 10 mA, CL = 10 pF, VNF=0 to 0.4 V: NF1~4 to ERR MIN TYP. (Note) 0.30 (Note) 5.00 (Note) 0.25 (Note) 0.40 (Note) 0.40 (Note) 0.40 (Note) 0.10 (Note) 0.02 MAX (Note) 1.50 (Note) 15.0 (Note) 1.25 (Note) 2.00 (Note) 1.00 s (Note) 1.00 (Note) 1.00 s (Note) 1.00 UNIT
s
6
tfOUT Output Fall Time tfERR
6
7
Note:
The switching characteristic values indicate the guaranteed design limits.
TEST CIRCUIT
(1) VIL, IIL1~2, Vr1, VCEO, IOleak1, IOleak2
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(2) VIH, IIH, VOL1
(3)
VI+, VERR, IERR, VOL2
(4)
ICC, ICCopr
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(5) Vf1
(6)
tPDIO1, tPDIO3, trOUT, tfOUT
(7)
tPDIO2, trERR, tfERR, C (LP)
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SWITCHING WAVEFORM
[tPDIO1, 3, trOUT, tfOUT]
[tPDIO2, trERR, tfERR]
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APPLICATION CIRCUIT
1. Using resistive load drive
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2. Using inductive load (eg, relay) drive
PRECAUTIONS for USING
This IC does not integrate protection circuits such as overcurrent and overvoltage protectors. Thus, if excess current or voltage is applied to the IC, the IC may be damaged. Please design the IC so that excess current or voltage will not be applied to the IC. Utmost care is necessary in the design of the output line, VCC, COMMON and GND line since IC may be destroyed due to short-circuit between outputs, air contamination fault, or fault by improper grounding.
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PACKAGE DIMENSIONS
SSOP18-P-225-0.65 Unit: mm
Weight: 0.08 g (Typ.)
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RESTRICTIONS ON PRODUCT USE
000707EBA
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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