PT7716 Datasheet, PDF (2/9 Pages) Texas Instruments – 20-A Low-Voltage Programmable Integrated Switching Regulator

PT7716—3.3V
20-A- Low-Voltage Programmable
Integrated Switching Regulator
Programming Information
VID3 VID2 VID1 VID0
1111
1110
1101
1100
1011
1010
1001
1000
0111
0110
0101
0100
0011
0010
0001
0000
VID4=1
Vout
1.075V
1.100V
1.125V
1.150V
1.175V
1.200V
1.225V
1.250V
1.275V
1.300V
1.325V
1.350V
1.375V
1.400V
1.425V
1.450V
VID4=0
Vout
1.475V
1.500V
1.525V
1.550V
1.575V
1.600V
1.625V
1.650V
1.675V
1.700V
1.725V
1.750V
1.775V
1.800V
1.825V
1.850V
Logic 0 = Pin 12 potential (Rem Sense Gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID4 may not be changed while the unit is operating.
PT7710 Product Family Comparison
Product
PT7711
Input
Voltage
5V
Description
VID
Adjust
Method
5-Bit
PT7712 3.3V
VID
4-Bit
PT7713 3.3V
VID
4-Bit
PT7714 3.3V
VID
5-Bit
PT7715
5V
VID
5-Bit
PT7716 3.3V
VID
5-Bit
PT7744 3.3V
Booster
—
PT7745
5V
Booster
—
Output
Range
1.3V– 3.5V
1.3V– 2.05V
1.8V– 2.55V
0.8V–1.575V
1.075V–1.85V
1.075V–1.85V
—
—
Specifications (Unless otherwise stated, Ta =25°C, Vin =3.3V, Cin =1,500µF, Cout =330µF, Vo =1.8V, and Io =Iomax)
PT7716
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Input Voltage Range
Set-Point Voltage Tolerance
Temperature Variation
Line Regulation
Load Regulation
Total Output Voltage Variation
Efficiency
Vo Ripple (pk-pk)
Transient Response
Short Circuit Threshold
Switching Frequency
STBY* Input Requirements
Input High Voltage
Input Low Voltage
Input Low Current
Standby Input Current
External Capacitance
Operating Temperature Range
Storage Temperature
Mechanical Shock
Mechanical Vibration
Mil-STD-883D, 20-2000 Hz
Weight
Flammability
Io
Vin
V_o tol
∆Regtemp
∆Regline
∆Regload
∆Vo tot
η
Vr
ttr
Vos
Isc(pk)
ƒo
V_IH
VIL
IIL
Iin standby
Cout
Ta
Ts
—
—
Ta = +25°C, Natural convection
Ta = +60°C, 200 LFM, pkg N
Over Io range
–40°C ≤Ta ≤+85°C, Io =Iomin
Over Vin range
Over Io range
Includes set-point, line, load
–40°C ≤Ta ≤+85°C
Io =10A
Vo = 1.8V
Vo = 1.5V
Vo = 1.2V
Io =20A
Vo = 1.8V
Vo = 1.5V
Vo = 1.2V
20MHz bandwidth
1A/µs load step, 50% to 100% Iomax
Vo over/undershoot
Reset followed by auto-recovery
Over Vin range
0.1 ⁽¹⁾
0.1 (1)
3.1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
300
Referenced to GND
Pin 5 to GND
Pin 5 to GND
Over Vin Range
—
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Through-hole
SMT
Vertical/Horizontal
Materials meet UL 94V-0
2.0
–0.2
—
—
330 (4)
–40
–40
—
—
—
—
—
—
—
±10
±0.75
±5
±5
±1
88
85
83
84
81
77
35
50
±100
32
350
—
—
0.3
30
—
—
—
500
20 (6)
15 (6)
36
20
16
3.6
±25 (2)
—
±10
±10
±3
—
—
—
—
—
—
—
—
—
—
400
A
V
mV
%Vo
mV
mV
%Vo
%
%
mVpp
µSec
mV
A
kHz
Open ⁽³⁾
0.8
V
—
mA
—
mA
15,000 µF
+85 ⁽⁵⁾
°C
+125
°C
—
G’s
—
—
G’s
—
grams
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) If the remote sense ground is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy.
(3) The STBY* control (pin 5) has an internal pull-up. If it is left open-circuit, the module will operate when input power is applied.
(4) For operation below 0°C, C_in and C_out 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.
External Capacitors: The PT7716 require a minimum output capacitance of 330µF for proper operation. The PT7716 also requires an input capacitance of 1500µF,
which must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For further
information refer to the application note regarding capacitor selection for this product.
Input Filter: An input filter inductor is optional for most applications. The inductor must be sized to handle 15ADC with a typical value of 1µH.
For technical support and more information, see inside back cover or visit www.ti.com