Document
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TC4403
1.5A HIGH-SPEED, FLOATING LOAD DRIVER
FEATURES
s Low Quiescent Current ......................... 300µA Max s Capacitive Inputs With 300mV Hysteresis s Both Inputs Must Be Driven to Drive Load s Low Output Leakage s High Peak Current Capability s Fast Output Rise Time s Outputs Individually Testable
APPLICATIONS
s Isolated Load Drivers s Pulsers s Safety Interlocks
ORDERING INFORMATION
Part No.
TC4403CPA TC4403EPA TC4403MJA
Package
8-Pin PDIP 8-Pin PDIP 8-Pin CerDIP
PIN CONFIGURATION
Temperature Range
0°C to 70°C – 40°C to +85°C – 55°C to +125°C
NC 1 IN (VDD) 2
GND 3 IN (GND) 4
TC4403
(TOP VIEW)
8 NC
7 OUT (VDD) 6 VDD 5 OUT (GND)
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The TC4403 is a modified version of the TC4425 driver, intended to drive floating or isolated loads requiring highcurrent pulses. The load is intended to be connected between the outputs without other reference to supply or ground. Then, only when both logic inputs and the VDD input are energized, is power supplied to the load. This construction allows the implementation of a wide variety of redundant input controllers.
The low OFF-state output leakage and independence of the two half-circuits permit a wide variety of testing schemes to be utilized to assure functionality. The high peak current capability, short internal delays, and fast output rise and fall times ensure that sufficient power will be available to the load when it is needed. The TTL and CMOS compatible inputs allow operation from a wide variety of input devices. The ability to swing the inputs negative without affecting device performance allows negative biases to be placed on the inputs for greater safety. In addition, the capacitive nature of the inputs allows the use of series resistors on the inputs for extra noise suppression.
The TC4403 is built for outstanding ruggedness and reliability in harsh applications. Input voltage excursions above the supply voltage or below ground are clamped internally without damaging the device. The output stages are power MOSFETs with high-speed body diodes to prevent damage to the driver from inductive kickbacks.
6 VDD
2 3 4 5 6
IN (GND) IN (VDD)
4 2
GND
3
EFFECTIVE INPUT C = 20pF
(EACH INPUT)
TELCOM SEMICONDUCTOR, INC.
300mV INPUT HYSTERESIS
TC4403
7 OUT (VDD) 5 OUT (GND)
7
8
TC4403-6 10/11/96
4-213
1.5A HIGH-SPEED, FLOATING LOAD DRIVER
TC4403
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ......................................................... +22V Maximum Chip Temperature ................................. +150°C Storage Temperature Range ................ – 65°C to +150°C Lead Temperature (Soldering, 10 sec) ................. +300°C Package Thermal Resistance
CerDIP, RθJ-A ............................................... 150°C/W CerDIP, RθJ-C ................................................. 50°C/W PDIP, RθJ-A .................................................. 125°C/W PDIP, RθJ-C .................................................... 42°C/W Operating Temperature Range C Version ............................................... 0°C to +70°C E Version .......................................... – 40°C to +85°C M Version ....................................... – 55°C to +125°C
*Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability.
MAX. POWER (mW)
Thermal Derating Curves
1600
1400 1200 1000
8 Pin DIP 8 Pin CerDIP
800 8 Pin SOIC
600
400
200
0 0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (°C)
100 110 120
ELECTRICAL CHARACTERISTICS: TA = +25°C with 4.5V ≤ VDD ≤ 18V, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min Typ Max
Input
VIH Logic 1 High Input Voltage VIL Logic 0 Low Input Voltage
IIN Output
Input Current
VOH High Output Voltage
VOL Low Output Voltage
ROS Sourcing Output Resistance
ROG Grounding Output Resistance IPK Peak Output Current Switching Time (Note 1)
tR Rise Time tF Fall Time tD1 Delay Time tD2 Delay Time
Power Supply
IS Power Supply Current
NOTE: 1. Switching times guaranteed by design.
– 5V ≤ VIN ≤ VDD
IOUT = 10mA, VDD = 18V IOUT = –10mA, VDD = 18V
Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF Figure 1, CL = 1800pF
VIN = 3V (Both Inputs) VIN = 0V (Both Inputs)
2.4 — –1000
—— — 0.8 ±10 +1000
VDD – 0.025 — — — —
— — 2.8 3.5 1.5
— 0.025
5 5 —
— 23 35 — 25 35 — 33 75 — 38 75
— 1.5 2.5 — 0.15 0.25
Unit
V V nA
V V Ω Ω A
nsec nsec nsec nsec
mA
4-214
TELCOM SEMICONDUCTOR, INC.
1.5A HIGH-SPEED, FLOATING LOAD DRIVER
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TC4403
ELECTRICAL CHARACTERISTICS:
Symbol
.