PT8120 Datasheet, PDF (3/11 Pages) Texas Instruments – 30-A 12-V Input Programmable Integrated Switching Regulator

PT8120 Series
30-A 12-V Input Programmable
Integrated Switching Regulator
PT8121 /2 /3 /5 Specifications (Unless otherwise stated Ta =25°C, Cin =1,500µF, Cout =660µF, Vin =12V, & Io = Iomax )
PT8121 /2 /3 /5 Only
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set-Point Voltage Tolerance
Line Regulation
Load Regulation
Temperature Variation
Total Output Voltage Variation
Efficiency
Vo Ripple (pk-pk)
Transient Response
Over-Current Threshold
Switching Frequency
Standby Control (pin 6)
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Output Capacitance
External Input Capacitance
Operating Temperature Range
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
Flammability
Io
Vin
Vo tol
∆Regline
∆Regload
∆Regtemp
∆V_otot
η
Vr
ttr
∆V_tr
ITRIP
ƒs
VIH
V_IL
IIL
Iin standby
Cout
C_in
Ta
Ts
—
—
Natural convection or
60°C with 200LFM airflow
Over Io Range
Vo ≤3.5V
V_o ≥4.5V
Over Vo range
Over Vin range
Over Io range
–40°C ≤Ta ≤85°C
Includes set-point, line load,
–40°C ≤Ta ≤ 85°C
I_o =15A
V_o =5.0V
Vo =3.3V
Vo =2.5V
Vo =1.8V
Vo =1.5V
Vo =1.2V
Io =Iomax
Vo =5.0V
Vo =3.3V
V_o =2.5V
Vo =1.8V
Vo =1.5V
Vo =1.2V
20MHz bandwidth
1A/µs load step, 50% to 100% Iomax
V_o over/undershoot
Reset followed by auto-recovery
Over load range
Vo ≥4.5V
V_o ≤3.5V
Referenced to GND (pins 17–22)
Pin 6 to GND
Pin 6 to GND
See PT812x application schematic
See PT812x application schematic
Over Vin Range
—
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Mil-STD-883D, Method 2007.2
20-2000 Hz, soldered in PCB
Vertical/Horizontal
Materials meet UL 94V-0
0.1 (1)
0.1 (1)
10.8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
300
—
-0.2
—
—
660 ⁽³⁾
1,500
–40 (4)
-40
—
—
—
—
—
—
±1
±10
±10
±0.5
—
94
92
90
86
84
81
93
91
88
84
82
78
20
50
100
40
45
350
—
—
0.5
35
—
—
—
—
500
20 (6)
55
30
28
A
13.2
V
±2
%V
—
mV
—
mV
—
%Vo
±3
%V
—
—
—
—
%
—
—
—
—
—
—
%
—
—
—
mV
—
µSec
—
mV
—
—
A
400
kHz
Open (2)
0.8
V
—
mA
—
mA
30,000 µF
—
µF
+85 (5)
°C
+125
°C
—
G’s
—
G’s
—
grams
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the PT812x will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(3) The PT8120 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.
(4) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.
(5) See safe Operating Area curves or consult factory for the appropriate derating.
(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: An input filter inductor is optional for most applications. The inductor must be rated to handle the projected input current. A rating of 10ADC for
Vout ≤3.3V, and 15ADC for Vout ≥4.5V is recommended. The input capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic
load applications, additional capacitance may be required. For more information consult the application note on capacitor selection.
For technical support and more information, see inside back cover or visit www.ti.com