68
S-301
TAS5121 (IC101, 201, 301, 401: 1U-3683)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
GND
PWM_BP
GND
RESET
DREG_RTN
GVDD
M3
DREG
DGND
M1
M2
DVDD
SD
DGND
OTW
GND
PWM_AP
GND
GVDD_B
GVDD_B
GND
BST_B
PVDD_B
PVDD_B
OUT_B
OUT_B
GND
GND
OUT_A
OUT_A
PVDD_A
PVDD_A
BST_A
GND
GVDD_A
GVDD_A
Terminal Functions
TERMINAL
FUNCTION(1)
DESCRIPTION
NAME
DKD
FUNCTION(1)
DESCRIPTION
BST_A
22
P
High-side bootstrap supply (BST), external resistor and capacitor to OUT_A required
BST_B
33
P
High-side bootstrap supply (BST), 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,
18, 21,
27, 28,
34
P
Power ground, connected to system GND
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
Protection mode selection pin, connect to DREG
Output mode selection pin; connect to GND
Overtemperature warning output, open drain with internal pullup resistor, active-low when temper-
ature exceeds 115
°
C
Output, half-bridge A
Output, half-bridge B
Power supply input for half-bridge A
Power supply input for half-bridge B
PWM input signal, half-bridge A
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 resistor), active-low
(1) I = input, O = Output, P = Power
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TEL 13942296513
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8
0
5
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