Datasheet

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PACKAGE DISSIPATION RATINGS
TAS5121I
SLES122 – SEPTEMBER 2004
ORDERING INFORMATION
T
A
PACKAGE TRANSPORT MEDIA DESCRIPTION
–40 ° C to 85 ° C TAS5121IDKD Tube 36-pin PSOP3
–40 ° C to 85 ° C TAS5121IDKDR Tape and reel 36-pin PSOP3
R
θ JC
R
θ JA
PACKAGE
( ° C/W) ( ° C/W)
36-Pin DKD PSOP3 0.85 See
(1)
(1) The TAS5121I package is thermally enhanced for conductive cooling using an exposed metal pad area. It is impractical to use the
devices with the pad exposed to ambient air as the only heat sinking of the device.
Therefore R
θ JA
, a system parameter that characterizes the thermal treatment, is provided in the Thermal Information section. This
information should be used as a reference to calculate the heat dissipation ratings for a specific application.
Terminal Functions
TERMINAL
FUNCTION
(1)
DESCRIPTION
NAME DKD
BST_A 22 P High-side bootstrap (BST) supply, external resistor and capacitor to OUT_A required
BST_B 33 P High-side bootstrap (BST) supply, external resistor and capacitor to OUT_B required
DGND 9, 14 P I/O reference ground
DREG 8 P Digital supply-voltage regulator-decoupling pin, 1- µ F capacitor connected to DREG_RTN
DREG_RTN 5 P Decoupling return pin
DVDD 12 P I/O reference supply input: 100 Ω to DREG, decoupled to GND, 0.1- µ F capacitor connected to
GND
GND 1, 3, 16, P Power ground, connected to system GND
18, 21,
27, 28,
34
GVDD 6 P Local GVDD decoupling pin
GVDD_A 19, 20 P Gate-drive input voltage
GVDD_B 35, 36 P Gate-drive input voltage
M1 10 I Protection-mode selection pin, connect to GND
M2 11 I Protection-mode selection pin, connect to DREG
M3 7 I Output-mode selection pin; connect to GND
OTW 15 O Overtemperature warning output, open-drain with internal pullup, asserted low when tempera-
ture exceeds 115 ° C
OUT_A 25, 26 O Output, half-bridge A
OUT_B 29, 30 O Output, half-bridge B
PVDD_A 23, 24 P Power supply input for half-bridge A
PVDD_B 31, 32 P Power supply input for half-bridge B
PWM_AP 17 I PWM input signal, half-bridge A
PWM_BP 2 I PWM input signal, half-bridge B
RESET 4 I Reset signal, active-low
SD 13 O Shutdown signal for half-bridges A and B (open-drain with internal pullup)
(1) I = input, O = Output, P = Power
3