March 2009 Rev 5 1/22
22
STPIC6C595
Power logic 8-bit shift register
Features
■ Low R
DS(on)
: 4 Ω typ
■ 30 mJ avalanche energy
■ Eight 100 mA DMOS outputs
■ 250 mA current limit capability
■ 33 V output clamp voltage
■ Device are cascadable
■ Low power consumption
Description
This STPIC6C595 is a monolithic, medium-
voltage, low current power 8-bit shift register
designed for use in systems that require relatively
moderate load power such as LEDs. The device
contains a built-in voltage clamp on the outputs
for inductive transient protection. Power driver
applications include relays, solenoids, and other
low-current or medium-voltage loads.
The 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 register clock (SRCK) and the register
clock (RCK
), respectively. The device transfers
data out the serial output (SER OUT) port on the
rising edge of SRCK. The storage register
transfers data to the output buffer when shift
register clear (CLR) is high. When CLR
is low, the
input shift register is cleared. When output enable
(G
) is held high, all data in the output buffer is
held low and all drain output are off. When G is
held low, data from the storage register is
transparent to the output buffer.
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. The SER OUT allows for cascading of
the data from the shift register to additional
devices.
Output are low-side, open-drain DMOS
transistors with output ratings of 33 V and 100 mA
continuous sink-current capability. Each output
provides a 250 mA maximum current limit at
T
C
= 25 °C. The current limit decreases as the
junction temperature increases for additional
device protection. The device also provides up to
1.5 kV of ESD protection when tested using the
human-body model and 150 V machine model.
The STPIC6C595 is characterized for operation
over the operating case temperature range of
-40 °C to 125 °C.
SO-16 TSSOP16
Table 1. Device summary
Order codes Package Packaging
STPIC6C595MTR SO-16 (Tape and reel) 2500 parts per reel
STPIC6C595TTR TSSOP16 (Tape and reel) 2500 parts per reel
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