PT8100 Datasheet, PDF (6/14 Pages) Texas Instruments – 40-A 3.3/5-V Input Programmable Integrated Switching Regulator

PT8100 Series
40-A 3.3/5-V Input Programmable
Integrated Switching Regulator
PT8104 Specifications (Unless otherwise stated Ta =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, Vo =1.8V, & Io =40A )
PT8104, Vin =5V
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set-Point Voltage Tolerance
Line Regulation
Load Regulation (Droop)
Temperature Variation
Total Output Voltage Variation
Efficiency
V_o Ripple (pk-pk)
Transient Response (Vo =1.2V)
Short Circuit 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
∆Reg_load
∆Regtemp
∆Votot
η
V_r
ttr
∆Vtr
Iosc
ƒo
VIH
VIL
I_IL
Iin standby
C2
C1
Ta
Ts
—
—
25°C, natural convection
60°C with 200LFM airflow
0.1 (1)
—
0.1 (1)
—
Over Io Range
4.5
—
Over Vo range
—
±1
Over Vin range
Over I_o range
–40°C ≤Ta ≤85°C
—
±10
—
1.5
—
±0.5
Includes set-point, line, load,
–40°C ≤Ta ≤ 85°C, pin 31 to GND
—
—
Io =15A
Vo =1.8V —
90
Vo =1.5V —
88
V_o =1.2V —
87
Io =40A
Vo =1.8V —
85
V_o =1.5V —
82
Vo =1.2V —
80
20MHz bandwidth
—
25
1A/µs load step, 50% to 100% Iomax
—
50
Vo over/undershoot
—
50
—
58
Over load range
300
350
Referenced to GND (pins 17–22)
Pin 6 to GND
Pin 6 to GND
See PT8104 application schematic
See PT8104 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
Vertical/Horizontal
Materials meet UL 94V-0
—
–0.2
—
—
660 (6)
1,500
–40 (4)
–40
—
—
—
—
—
—
0.5
35
—
—
—
—
500
20 (7)
20 (7)
55
38
40
5.5
±2
—
—
—
75 ⁽²⁾
—
—
—
—
—
—
—
—
—
—
400
A
V
%V
mV
mV/A
%Vo
mV
%
%
mV
µSec
mV
A
kHz
Open (3)
0.8
V
—
mA
—
mA
15,000 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) Total output voltage variation includes load regulation droop, which is required for compliance with specification VRM 8.4-5
(3) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the module 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.
(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 PT8100 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.
(7) 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: The filter components L1 and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 20ADC is
recommended. The input capacitance, C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance
may be required. For more information refer to the application note on capacitor recommendations for this product.
6
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