Datasheet

ELECTRICAL CHARACTERISTICS
PTH05T210W
SLTS263I – AUGUST 2007 – REVISED MARCH 2009 ...................................................................................................................................................... www.ti.com
T
A
=25 ° C, V
I
= 5 V, V
O
= 3.3 V, C
I
= 1000 µ F, C
O
= 470 µ F OS-CON, and I
O
= I
O
max (unless otherwise stated)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
25 ° C, natural convection 0 30
I
O
Output current A
60 ° C, 200 LFM 0 30
V
I
Input voltage range Over I
O
range 4.5 5.5 V
Output voltage adjust
V
OADJ
Over I
O
range 0.7 3.6 V
range
Set-point voltage tolerance ± 1
(1)
%V
o
Temperature variation – 40 ° C < T
A
< 85 ° C ± 0.3 %V
o
V
O
Line regulation Over V
I
range ± 4 mV
Load regulation Over I
O
range ± 7 mV
Total output variation Includes set-point, line, load, – 40 ° C ≤ T
A
≤ 85 ° C ± 1.5
(1)
%V
o
R
SET
= 1.62 k Ω , V
O
= 3.3 V 95%
R
SET
= 5.23 k Ω , V
O
= 2.5 V 94%
R
SET
= 12.7 k Ω , V
O
= 1.8 V 92%
η Efficiency I
O
= 26 A R
SET
= 19.6 k Ω , V
O
= 1.5 V 91%
R
SET
= 35.7 k Ω , V
O
= 1.2 V 89%
R
SET
= 63.4 k Ω , V
O
= 1.0 V 87%
Open, V
O
= 0.7 V 83%
V
O
Ripple (peak-to-peak) 20-MHz bandwidth 10 mV
PP
I
LIM
Overcurrent threshold Reset, followed by auto-recovery 55 A
t
tr
w/o TurboTrans Recovery time 50 µ s
C
O
= 470 µ F
Δ V
tr
V
O
over/undershoot 140 mV
t
tr
w/o TurboTrans Recovery time 50 µ s
2.5 A/ µ s load step
Transient response
C
O
= 940 µ F, Type C
50 to 100% I
O
max
Δ V
tr
V
O
over/undershoot 120 mV
t
trTT
w/ TurboTrans Recovery time 5 µ s
C
O
= 940 µ F, Type C
Δ V
trTT
V
O
over/undershoot 80 mV
I
IL
Track input current (pin 14) Pin to GND – 130
(2)
µ A
dV
track
/dt Track slew rate capability C
O
≤ C
O
(max) 1 V/ms
V
I
increasing 4.00 4.25 4.45
Adjustable Undervoltage
UVLO
ADJ
Pin 1 open V
lockout (pin 1)
V
I
Turn – Off Hysterisis 0.150
Input high voltage (V
IH
) V
I
– 0.5 Open
(3)
V
Inhibit control (pin 1)
Input low voltage (V
IL
) -0.2 0.6
Input low current (I
IL
) 125 µ A
I
in
Input standby current Inhibit (pin 1) to GND, Track (pin 14) open 3 mA
f
s
Switching frequency Over V
I
and I
O
ranges 640 kHz
C
I
External input capacitance 1000
(4)
µ F
(1) The set-point voltage tolerance is affected by the tolerance and stability of R
SET
. The stated limit is unconditionally met if R
SET
has a
tolerance of 1% with 100 ppm/C or better temperature stability.
(2) A low-leakage ( < 100 nA), open-drain device, such as MOSFET or voltage supervisor IC, is recommended to control pin 14. The
open-circuit voltage is less than 5 Vdc.
(3) This control pin has an internal pullup to the input voltage V
I
. 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 note.
(4) A 1000 µ F electrolytic input capacitor is required for proper operation. The capacitor must be rated for a minimum of 1000 mA rms of
ripple current.
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