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PTH08T240WAS Datasheet(PDF) 4 Page - Texas Instruments

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Part # PTH08T240WAS
Description  10-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TURBOTRANS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PTH08T240WAS Datasheet(HTML) 4 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
PTH08T240W, PTH08T241W
SLTS264E – NOVEMBER 2005 – REVISED FEBRUARY 2007
PTH08T240W
T
A = 25°C, VI = 5 V, VO = 3.3 V, CI = 220 µF, CO = 220 µF, and IO = IO max (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTH08T240W
UNIT
MIN
TYP
MAX
IO
Output current
Over VO range
25
°C, natural convection
0
10
A
11
×
0.69
≤ V
O≤ 1.2
4.5
VO(1)
VI
Input voltage range
Over IO range
V
1.2 < VO≤ 3.6
4.5
14
3.6 < VO≤ 5.5
VO + 2
14
VOADJ
Output voltage adjust range
Over IO range
0.69
5.5
V
Set-point voltage tolerance
±0.5
±1 (2)
%Vo
Temperature variation
–40
°C < T
A < 85°C
±0.3
%Vo
VO
Line regulaltion
Over VI range
±3
mV
Load regulation
Over IO range
±2
mV
Total output variation
Includes set-point, line, load, –40
°C ≤ T
A ≤ 85°C
±1.5 (2)
%Vo
RSET = 171 Ω, VI = 8 V, VO = 5.0 V
95%
RSET = 1.21 kΩ, VO = 3.3 V
94%
RSET = 2.38 kΩ, VO = 2.5 V
92%
η
Efficiency
IO = 10 A
RSET = 4.78 kΩ, VO = 1.8 V
90%
RSET = 7.09 kΩ, VO = 1.5 V
88%
RSET = 12.1 kΩ, VO = 1.2 V
87%
RSET = 20.8 kΩ, VO = 1.0 V
85%
VO Ripple (peak-to-peak)
20-MHz bandwidth
10 (3)
mVPP
ILIM
Overcurrent threshold
Reset, followed by auto-recovery
20
A
ttr
Recovery time
35
µs
w/o TurboTrans
CO = 220 µF, Type C
∆V
tr
2.5 A/µs load step
VO over/undershoot
165
mV
Transient response
50 to 100% IOmax
ttrTT
w/ TurboTrans
Recovery time
130
µs
VO = 2.5 V
CO = 2000 µF, Type C,
mV
∆V
trTT
VO over/undershoot
30
RTT = 0 Ω
IIL
Track input current (pin 10)
Pin to GND
–130(4)
µA
dVtrack/dt
Track slew rate capability
CO ≤ CO (max)
1
V/ms
VI increasing, RUVLO = OPEN
4.3
4.45
Adjustable Under-voltage lockout
UVLOADJ
VI decreasing, RUVLO = OPEN
4.0
4.2
V
(pin 11)
Hysteresis, RUVLO≤ 52.3 kΩ
0.5
Input high voltage (VIH)
Open(5)
V
Inhibit control (pin 11)
Input low voltage (VIL)
-0.2
0.8
Input low current (IIL), Pin 11 to GND
-235
µA
Iin
Input standby current
Inhibit (pin 11) to GND, Track (pin 10) open
5
mA
f s
Switching frequency
Over VI and IO ranges, SmartSync (pin 1) to GND
300
kHz
Synchronization (SYNC)
fSYNC
240
400
kHz
frequency
VSYNCH
SYNC High-Level Input Voltage
2
5.5
V
VSYNCL
SYNC Low-Level Input Voltage
0.8
V
tSYNC
SYNC Minimum Pulse Width
200
nSec
(1)
The maximum input voltage is duty cycle limited to (VO× 11) or 14 volts, whichever is less. The maximum allowable input voltage is a
function of switching frequency, and may increase or decrease when the SmartSync feature is utilized. Please review the SmartSync
section of the Application Information for further guidance.
(2)
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.
(3)
For output voltages less than 1.7 V, the ripple may increase (up to 2
×) when operating at input voltages greater than (V
O× 11). See the
SmartSync section of the Application Information for input voltage and frequency limitations.
(4)
A low-leakage (<100 nA), open-drain device, such as MOSFET or voltage supervisor IC, is recommended to control pin 10. The
open-circuit voltage is less than 8 Vdc.
(5)
This control pin has an internal pull-up. Do not place an external pull-up on this pin. If it is left open-circuit, the module operates when
input power is applied. A small, low-leakage (<100 nA) MOSFET is recommended for control. For additional information, see the related
application information section.
4
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