- Low rDS(on) . . . 1.3
Typical - Avalanche Energy . . . 75 mJ
- Eight Power DMOS Transistor Outputs of 250-mA Continuous Current
- 1.5-A Pulsed Current Per Output
- Output Clamp Voltage at 45 V
- Devices Are Cascadable
- Low Power Consumption
Description for the TPIC6595
The TPIC6595 is a monolithic, high-voltage, high-current power
8-bit shift register designed for use in systems that require
relatively high load power. The device contains a built-in voltage
clamp on the outputs for inductive transient protection. Power
driver applications include relays, solenoids, and other
medium-current or high-voltage loads.
This device contains an 8-bit serial-in, parallel-out shift
register that feeds an 8-bit D-type storage register. Data
transfers through both the shift and storage registers on the
rising edge of the shift-register clock (SRCK) and the register
clock (RCK) respectively. The storage register transfers data to
the output buffer when shift-register clear (SRCLR) is high. When
SRCLR is low, the input shift register is cleared. When output
enable (G) is held high, all data in the output buffers is held low
and all drain outputs are off. When G is held low, data from the
storage register is transparent to the output buffers. The serial
output (SER OUT) allows for cascading of the data from the shift
register to additional devices.
Outputs are low-side, open-drain DMOS transistors with output
ratings of 45 V and 250-mA continuous sink current capability. When
data in the output buffers is low, the DMOS-transistor outputs are
off. When data is high, the DMOS-transistor outputs have sink
current capability.
Separate power and logic level ground pins are provided to
facilitate maximum system flexibility. Pins 1, 10, 11, and 20 are
internally connected, and each pin must be externally connected to
the power system ground in order to minimize parasitic inductance.
A single-point connection between pin 19, logic ground (LGND), and
pins 1, 10, 11, and 20, power grounds (PGND), must be externally
made in a manner that reduces crosstalk between the logic and load
circuits.
The TPIC6595 is characterized for operation over the operating case
temperature range of -40°C to 125°C.
