Datasheet


SLOS390A – NOVEMBER 2001– REVISED MAY 2002
www.ti.com
4
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME NO.
I/O DESCRIPTION
AGND 2 Analog ground
AVDD 1 I Analog power supply
FAULT0 5 O Fault flag 0, low when active open drain output (see application information)
FAULT1 4 O Fault flag 1, low when active open drain output (see application information)
HI-Z 3 I Places both outputs of the H-bridge into a high-impedance state (2 kΩ to ground) when a TTL logic low is
applied to this terminal; normal operation when a TTL logic high is applied.
IN– 7 I Negative H-bridge input
IN+ 6 I Positive H-bridge input
OUT– 13–17 O Negative H-bridge output (5 terminals)
OUT+ 24–28 O Positive H-bridge output (5 terminals)
PGND 18–23 High-current ground (6 terminals)
PVDD 9–12,
29–32
I High-current power supply (8 terminals)
SHUTDOWN 8 I Places the amplifier in shutdown mode when a TTL logic low is applied to this terminal; places the amplifier in
normal operation when a TTL logic high is applied
FUNCTIONAL BLOCK DIAGRAM
Gate
Drive
Gate
Drive
AVDD
OC
Detect
Start-Up
Protection
Logic
Thermal
VDDok
Biases
and
References
TTL
Input
Buffer
IN–
IN+
AGND
AVDD
PVDD
OUT+
PGND
PVDD
OUT–
PGND
FAULT0
FAULT1
SHUTDOWN
HI-Z
IN–
IN+
SDZ