PT8120 Datasheet, PDF (4/11 Pages) Texas Instruments – 30-A 12-V Input Programmable Integrated Switching Regulator

PT8120 Series
30-A 12-V Input Programmable
Integrated Switching Regulator
PT8124 Pin-Out Information
Pin Function
1 VID 25mV
2 VID 0
3 VID 1
4 VID 2
5 VID 3
6 STBY
7 Do Not Connect
8 Do Not Connect
9 Do Not Connect
10 Do Not Connect
11 VID Common
12 Vin
13 Vin
14 Vin
15 V_in
16 Vin
* For STBY pin:
Open =Output Enabled
Ground =Output Disabled
Pin Function
17 GND
18 GND
19 GND
20 GND
21 GND
22 GND
23 Vout
24 Vout
25 V_out
26 Vout
27 Vout
28 Vout
29 Vout
30 Vout
31 Remote Sense
PT8124 Voltage Programming Information
VID 3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID 2 VID 1 VID 0
111
110
101
100
011
010
001
000
111
110
101
100
011
010
001
000
(VRM 8.5)
VID 25mV=0
Vout
1.300V
1.350V
1.400V
1.450V
1.500V
1.550V
1.600V
1.650V
1.700V
1.750V
1.800V
1.050V
1.100V
1.150V
1.200V
1.250V
VID 25mV=1
Vout
1.325V
1.375V
1.425V
1.475V
1.525V
1.575V
1.625V
1.675V
1.725V
1.775V
1.825V
1.075V
1.125V
1.175V
1.225V
1.275V
Notes:
i) Logic 0 = Connect to VID Common
ii) Logic 1 = Open circuit (no pull-up resistors)
iii) VID2 and VID3 may not be changed while the unit is operating.
PT8124 Standard Application
VID 25mV
VID 0
VID 1
VID 2
VID 3
VID
Common
PROGRAMMING PINS
L_in
12–16
V_IN
1µH
+
C_IN
GND
STBY*
REMOTE SENSE
11 5 4 3 2 1 31
PT8124
(Only)
6
17–22
23–30
+
C_OUT
V_OUT
L
O
A
D
GND
Cin = Required 1500µF electrolytic
Cout = Required 660µF low ESR OS-Con®, or
1,200µF aluminum electrolytic
Lin = Optional 1µH input choke
For technical support and more information, see inside back cover or visit www.ti.com