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KA7405D
2-Channel DC Motor Drive IC
Features
* Output current up to 1.5A (Each channel). * 4-function modes (CW, CCW, stop and brake) are controlled by 2-logic circuits. * Operating voltage range: VCC = 2.5 ~ 6.0V. * Built-in spike killer diode. * Low saturation voltage.
Description
The KA7405D is a monolithic integrated circuit, and suitable for the zoom and reel motor driver for camera, tape deck, any other consumer and industrial applications.
22-SOP-300
Typical Applications
* Camera zoom and film motors * General DC motor
Ordering Information
Device KA7405D Package 22-SOP-300 Operating Temp. -25C to +75C
Rev. 1.0.1 February. 2000.
(c)2000 Fairchild Semiconductor International
KA7405D
Pin Assignments
OUT1B OUT2B PG1B PG2B GND IN1B IN2B VCC 12 11 VCC VSB VSB N.C 14
22
21
20
19
18
17
16
15
13
KA7405D
1 GND
2 OUT1A
3 PG1A
1 4 VSA
5 IN1A
6 IN2A
7 VSA
8 PG2A
9 N.C
10 OUT2A
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Pin Name GND OUT1A PG1A VSA IN1A IN2A VSA PG2A NC OUT2A VCC VCC OUT2B NC PG2B VSB IN2B IN1B VSB PG1B OUT1B GND I/O O I I O O I I O Pin Function Description Signal ground Output 1 Power ground 1 Output supply voltage Input 1 Input 2 Output supply voltage Power ground 2 No connection Output 2 Supply voltage Supply voltage Output 2 No connection Power ground 2 Output supply voltage Input 2 Input 1 Output supply voltage Power ground 1 Output 1 Signal ground Remark Channel A Channel A Channel A Channel A Channel A Channel A Channel A Channel B Channel B Channel B Channel B Channel B Channel B Channel B Channel B -
2
KA7405D
Internal Block Diagram
VCC 11 IN1A VSA 5 7
A Channel
4 2 Control logic (AND, OR, Inverter)
VSA OUT1A PG1A
3
IN2A
6 1
10 OUT2A 8 PG2A
GND
VCC 12
B Channel
16 VSB 21 OUT1B Control logic (AND, OR, Inverter) 20 PG1B 13 OUT2B 15 PG2B
IN1B 18 VSB 19 IN2B 17 GND 22
3
KA7405D
Equivalent Circuits
Description IN1A IN2A IN1B IN2B VCC GND Pin No. 5 6 18 17 11, 12 1, 22
5 6 18 17 30k 30k
Internal Circuit
Control Input
11 12
1
22
Motor Output OUT1A OUT2A OUT1B OUT2B VSA VSB PG1A PG2A PG1B PG2B 2 10 21 13 4, 7 16, 19 3 8 20 15
3 8 20 15 21 13 2 10 4 7 16 19
4
KA7405D
Absolute Maximum Ratings (Ta = 25C)
Parameter Power supply voltage Channel supply voltage Power dissipation Operating temperature Storage temperature Output current Symbol VCCMAX VSMAX PD TOPR TSTG IOMAX Value 6.0 6.0 1000 -25 ~ +75 -40 ~ +125 1.5 Unit V V mW C C A
Power Dissipation Curve
Pd[mW] 1250 1000 750 500 250 0 0 25 50 75 100 125 150 Ambient Temperature Ta[C]
IC
SOA
Recommended Operating Conditions (Ta = 25C)
Parameter Operating supply voltage Symbol VCC Min. 2.5 Typ. Max. 6.0 Unit V
5
KA7405D
Electrical Characteristics
(VCC=3V, Ta=25C, unless otherwise specified) Parameter Supply current 1 Supply current 2 Supply current 3 Supply current 4 Input current Leakage current Upper spark diode forward voltage Lower spark diode forward voltage Output saturation voltage (1A) Output saturation voltage (1B) Output saturation voltage (2A) Output saturation voltage (2B) Output saturation voltage (3A) Output saturation voltage (3B) Output saturation voltage (4A) Output saturation voltage (4B) Output saturation voltage 5 Output saturation voltage 6 Output saturation voltage 7 Output saturation voltage 8 Output sustain voltage Output saturation low voltage A Output saturation low voltage B
Notes: User`s option.
note note
Symbol ICC1 ICC2 ICC3 ICC4 IIN IIK VSF1 VSF2 VO1A VO1B VO2A VO2B VO3A VO3B VO4A VO4B VO5 VO6 VO7 VO8 VSUS VOLA VOLB
Conditions VIN(all) = 0V,Vcc=5V VIN1=3V,Vcc=5V VIN2=3V,Vcc=5V VIN=3V VCC=6V, VIN=2V VCC=5V IO=500mA IO=500mA IOA=300mA,VIN1A=3V IOB=300mA,VIN1B=3V IOA=600mA,VIN1A=3V IOB=600mA,VIN1B=3V IOA=300mA,VIN2A=3V IOB=300mA,VIN2B=3V IOA=600mA,VIN2A=3V IOB=600mA,VIN2B=3V IOB=600mA,VIN1=3V IO=600mA,VIN2=3V IO=1200mA,VIN1=3V IO=1200mA,VIN2=3V IO=200mA VCC=1.9V, IOA=400mA VCC=1.9V, IOB=400mA
Min. 10 -
Typ. 0.1 15 15 30 45 0.1 1.0 1.0 0.45 0.45 1.0 1.0 0.45 0.45 1.0 1.0 0.6 0.6 1.2 1.2 15 0.45 0.45
Max. 10 30 30 50 80 10 1.7 1.7 0.70 0.70 1.5 1.5 0.70 0.70 1.5 1.5 0.8 0.8 1.6 1.6 0.90 0.90
Unit A mA mA mA A A V V V V V V V V V V V V V V V V V
6
KA7405D
Operation Truth Table
Input/Output Motor Operation Stop Forward Operation Backward Operation Fast stop Input 1 Low Low High High Input 2 Low High Low High Output 1 Off Low High Low Output 2 Off High Low Low Remark High impedance CW / CCW CCW / CW Brake
Typical Perfomance Characteristics
Voltage[V] 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 Voltage[V] 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4
VCC = 5V 0.2 Ta = 25C 0.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Current[A]
VCC = 5V 0.2 Ta = 25C 0.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Current[A]
Figure 1. PNP Saturation Voltage
Figure 2. PNP Saturation Voltage
7
KA7405D
Test Circuits
1
GND
GND
22
2
OUT1A
OUT1B 21
3
PG1A
PG1B
20
S/W 3 4 a S/W 4 b a 3V b a S/W 10 8 PG2A PG2B 15 1.5V S/W 5 6 IN2A 5 IN1A VSA VSB 19
S/W 6
A
IN1B 18
S/W 8
KA7405D
IN2B 17
A RL
7
VSA
VSB
16
S/W 9
b
S/W 7
9
N.C
N.C
14
10 OUT2A
OUT2B 13
11
VCC
VCC
12
A 7V V + 10/25V S/W 1 S/W 2 A
8
KA7405D
Test Conditions
Characteristics ICC1 ICC2 ICC3 ICC4 IIN IIK VSF1 VSF2 VO1A VO2A VO3A VO4A VO5 VO6 VO7 VO8 VSUS
Notes: ` X ' : Don't care.
SW1 Off Off Off Off On Off On On On On On On On On On On Off
SW2 Off Off Off Off On Off On On On On On On On On On On Off
SW3 X On On On On Off On On On On On On On On On On X
SW4 b a b a a b a b a b a b a b a b b
SW5 b b a a a b b a b a b a b a b a b
SW6 Off Off Off Off Off Off On On On On On On On On On On On
SW7 Off Off Off Off Off Off On On On On On On On On On On On
SW8 X X X X X X Off Off On On On On On On On On On
SW9 SW10 X X X X X X Off Off On On On On On On On On On Off Off Off Off Off Off a b Off Off Off Off Off Off Off Off Off
Remark Supply current Supply current Supply current Supply current Input current Leakage current Spark diode Spark diode Single mode Single mode Single mode Single mode Parallel mode Parallel mode Parallel mode Parallel mode Sustain voltage
9
KA7405D
Typical Application Circuits 1
(Single drive mode)
1
GND
GND
22
M
2
OUT1A
OUT1B 21
M
3
PG1A
PG1B
20
4
VSA
VSB
19
5 From MCU 6
IN1A
IN1B
18 From MCU
KA7405D
IN2A IN2B 17
7
VSA
VSB
16
8
PG2A
PG2B
15
9
N.C
N.C
14
10 OUT2A
OUT2B 13
11 Battery + 10/25V
VCC
VCC
12
10
KA7405D
Typical Application Circuits 2
(Parallel drive mode)
1
GND
GND
22
2
OUT1A
OUT1B 21
M
3
PG1A
PG1B
20
4
VSA
VSB
19
5 From MCU 6
IN1A
IN1B
18
KA7405D
IN2A IN2B 17
7
VSA
VSB
16
8
PG2A
PG2B
15
9
N.C
N.C
14
10 OUT2A
OUT2B 13
11
VCC
VCC
12
Battery + 10/25V
11
KA7405D
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
www.fairchildsemi.com 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor international
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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