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PTH12020WAZ Datasheet(PDF) 5 Page - Texas Instruments

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Part # PTH12020WAZ
Description  18-A, 12-V INPUT NON-ISOLATED WIDE-OUTPUT ADJUST POWER MODULE
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PTH12020WAZ Datasheet(HTML) 5 Page - Texas Instruments

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PTH12020W/L
SLTS208E–MAY 2003–REVISED OCTOBER 2005
ELECTRICAL CHARACTERISTICS (continued)
TA =25°C, VI =12 V, VO = 3.3 V, CI = 560 µF, CO =0 µF, and Io =Iomax) (unless otherwise noted)
PTH12020L
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
IIL margin
Margin input current (pins 9 /10)
Pin to GND
–8(3)
µA
IIL track
Track input current (pin 8)
Pin to GND
–0.13(3)
mA
dVtrack/dt
Track slew rate capability
Cout≤ Cout(max)
1V/ms
Vin increasing
9.7
10.4
UVLO
Undervoltage lockout
V
Vin decreasing
8.8
9.2
Inhibit control (pin 3)
VIH
2
Open(4)
Input high voltage
Referenced to GND
V
VIL
Input low voltage
–0.2
0.5
IIL inhibit
Input low current
Pin to GND
0.24
mA
Iin inh
Input standby current
Inhibit (pin 3) to GND, Track (pin 8) open
5
mA
ƒs
Switching frequency
Over Vin and Io ranges
200
250
300
kHz
CI
External input capacitance
560(5)
µF
Non-ceramic
0
330 (6)
9900 (7)
Capacitance value
µF
CO
External output capacitance
Ceramic
0
300
Equivalent series resistance (non-ceramic)
4(8)
mΩ
MTBF
Reliability
Per Bellcore TR-332, 50% stress, TA =40°C, ground benign
5.3
106 Hrs
(3) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.
(4) This control pin is pulled up to an internal supply voltage. To avoid risk of damage to the module, do not apply an external voltage
greater than 7 V. If this input is left open-circuit the module will operate when input power is applied. A small low-leakage (<100 nA)
MOSFET or open-drain/collector voltage supervisor IC is recommended for control. For further information, consult the related
application note.
(5) A 560 µF electrolytic input capacitor is required for proper operation. The capitor must be rated for a minimum of 800 mA rms of ripple
current.
(6) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the
transient response.
(7) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. When controlling the Track pin using a
voltage supervisor, the maximum output capacitance is reduced to 6600 µF. Consult the application notes for further guidance.
(8) This is the typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values
to calculate.
5


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