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PTN78060WAZ Datasheet(PDF) 3 Page - Texas Instruments

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Part # PTN78060WAZ
Description  3-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PTN78060WAZ Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
PTN78060W, PTN78060H
www.ti.com................................................................................................................................................... SLTS229B – NOVEMBER 2004 – REVISED JUNE 2009
operating at 25°C free-air temperature, VI = 20 V, VO = 5 V, IO = IO (max), CI = 2.2 µF, CO = 100 µF (unless otherwise noted)
PTN78060W
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IO
Output current
TA = 85°C, natural convection airflow
0
3
A
VI
Input voltage range
Over IO range
7 (1)
36 (2)
V
Set-point voltage tolerance
TA = 25°C
±2%(3)
Temperature variation
–40°C to +85°C
±0.5%
Line regulation
Over VI range
±10
mV
VO
Load regulation
Over IO range
±10
mV
Includes set point, line, load
Total output voltage variation
±3% (3)
–40 < TA < 85°C
VI < 12 V
2.5
VI – 2
12 V
≤ VI ≤ 15.1 V
2.5
VI – 2.5
VO (adj)
Output voltage adjust range
V
15.1 V < VI ≤ 25 V
2.5
12.6
VI > 25 V
0.1 × VI
12.6
VI = 24 V, IO = 3 A
RSET = 732 Ω, VO = 12 V
94%
η
Efficiency
RSET = 21 kΩ, VO = 5 V
86%
RSET = 78.7 kΩ, VO = 3.3 V
82%
Output voltage ripple
20-MHz bandwidth
1% VO
V(PP)
IO (LIM)
Current limit threshold
ΔVO = –50 mV
5.5
A
1-A/µs load step from 50% to 100% IOmax
Transient response
Recovery time
100
µs
VO over/undershoot
5
%VO
Input high voltage (VIH)
1
Open (4)
V
Inhibit control (pin 3)
Input low voltage (VIL)
–0.1
0.3
Input low current (IIL)
0.25
mA
II(stby)
Input standby current
Pin 3 connected to GND
17
mA
FS
Switching frequency
Over VI and IO ranges
440
550
660
kHz
CI
External input capacitance
2.2 (5)
µF
Ceramic or nonceramic
100 (6)
Ceramic
200
µF
CO
External output capacitance
Nonceramic
2,000
Equivalent series resistance (nonceramic)
10 (7)
m
Per Telcordia SR-332, 50% stress,
MTBF
Calculated reliability
8.9
106 Hr
TA = 40°C, ground benign
(1)
For output voltages less than 10 V, the minimum input voltage is 7 V or (VO + 2) V, whichever is greater. For output voltages of 10 V
and higher, the minimum input voltage is (VO + 2.5) V. See the Application Information section for further guidance.
(2)
For output voltages less than 3.6 V, the maximum input voltage is 10 × VO . See the Application Information section for further guidance.
(3)
The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a
tolerance of 1% with 100 ppm/°C or better temperature stability.
(4)
This control pin has an internal pullup, and if left open-circuit, the module operates when input power is applied. The open-circuit voltage
is typically 1.5 V. A small, low-leakage (< 100 nA) MOSFET is recommended for control. An external pull-up resistor should not be used.
See the Application Information for further guidance.
(5)
An external 2.2-µF ceramic capacitor is required across the input (VI and GND) for proper operation. Locate the capacitor close to the
module.
(6)
100 µF of output capacitance is required for proper operation. See the Application Information section for further guidance.
(7)
This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 17 m
Ω as the minimum when using max-ESR values to
calculate.
Copyright © 2004–2009, Texas Instruments Incorporated
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