PT7615—5V
20-A Low-Voltage Programmable
Integrated Switching Regulator
Programming Information
20-A Programmable SIP Family
VID4=1
VID4=0
Vout
Input
Adjust
Description Method
Output
Range
VID3 VID2 VID1 VID0
Vout
Product
Voltage
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
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
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
PT 7709
5V
3.3V
5V
VID
VID
5-Bit
4-Bit
5-Bit
—
1.3V– 3.5V
1.3V– 2.05V
1.075V–1.85V
—
PT 7708
PT 7615
PT 7742
PT 7743
VID
3.3V
5V
Booster
Booster
—
—
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.
Specifications (Unless otherwise stated, Ta =25°C, Vin =5V, Cin =1,500µF, Cout =330µF, and Io =Iomax)
PT7615
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
(1)
(1)
Output Current
Io
Ta = +60°C, 200 LFM, pkg N
Ta = +25°C, natural convection
0.1
0.1
—
—
20
20
A
Input Voltage Range
Set-Point Voltage Tolerance
Temperature Variation
Line Regulation
Vin
Over Io range
4.5
—
—
—
—
—
10
1.5
5
5.5
V
(2)
Vo tol
Regtemp
Regline
Regload
∆Vo tol
25
mV
%Vo
mV
mV
–40°C ≤Ta ≤ +85°C
Over Vin range
Over Io range
—
10
10
Load Regulation
5
Total Output Voltage Variation
Set-point, line, load
–40°C ≤Ta ≤ +85°C
—
2
3
%Vo
%
Efficiency
η
Io = 10A
Vo = 1.8V
Vo = 1.5V
Vo = 1.2V
—
—
—
87
84
81
—
—
—
Io = 20A
Vo = 1.8V
Vo = 1.5V
Vo = 1.2V
—
—
—
82
79
75
—
—
—
%
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
—
40
—
mVpp
µSec
mV
A
Transient Response
ttr
1A/µs load step, 10A and 20A
Vo over/undershoot
50
—
Vos
Isc (pk)
ƒs
—
100
32
—
Short Circuit Threshold
Switching Frequency
—
—
Over Vin range
300
350
400
kHz
STBY* Input Requirements
Input High Voltage
Referenced to GND
(3)
Open
0.8
—
VIH
VIL
IIL
2.0
—
—
V
Input Low Voltage
-0.2
Input Low Current
Standby Input Current
External Capacitance
Operating Temperature Range
Storage Temperature
Mechanical Shock
Pin 5 to GND
Pin 5 to GND
—
0.3
30
—
—
—
mA
mA
µF
°C
°C
Iin standby
—
—
(4)
Cout
Ta
330
–40
-40
15,000
(5)
Over Vin Range
—
+85
Ts
+125
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
—
500
10
—
—
G’s
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
Weight
—
—
Vertical/Horizontal
—
36
—
grams
Flammability
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) If the remote sense 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. A low-leakage (<1µA)
MOSFET must be used to control this pin. The open-circuit voltage may be as high as Vin.
(4) For operation below 0°C, Cin and 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.
External Capacitors: The PT7615 require a minimum output capacitance of 330µF for proper operation. The PT7615 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 10ADC with a typical value of 1µH.
For technical support and more information, see inside back cover or visit www.ti.com
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