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PTH08T221WAZ 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
SMD-11
描述:
16 -A ， 4.5 V至14 V输入，非隔离，宽输出，采用TurboTrans调节电源模块™ 16-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans™
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封装尺寸在P33
封装信息在P33P34
应用领域在P38
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PTH08T221WAZ数据手册
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ELECTRICAL CHARACTERISTICS
PTH08T220W , PTH08T221W
SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009 ...................................................................................................................................................
www.ti.com
PTH08T220W
T
A
= 25 ° C, V
I
= 5 V, V
O
= 3.3 V, C
I
= 330 µ F, C
I
2 = 22 µ F, C
O
= 220 µ F, and I
O
= I
O
max (unless otherwise stated)
PARAMETER TEST CONDITIONS PTH08T220W UNIT
MIN TYP MAX
I
O
Output current Over V
O
range 25 ° C, natural convection 0 16 A
0.69 ≤ V
O
≤ 1.2 4.5 14
(1)
V
I
Input voltage range Over I
O
range 1.2 < V
O
≤ 3.6 4.5 14 V
3.6 < V
O
≤ 5.5 V
O
+ 2 14
V
OADJ
Output voltage adjust range Over I
O
range 0.69 5.5 V
Set-point voltage tolerance ± 0.5 ± 1
(2)
%V
o
Temperature variation – 40 ° C < T
A
< 85 ° C ± 0.3 %V
o
V
O
Line regulaltion Over V
I
range ± 3 mV
Load regulation Over I
O
range ± 2 mV
Total output variation Includes set-point, line, load, – 40 ° C ≤ T
A
≤ 85 ° C ± 1.5
(2)
%V
o
R
SET
= 171 Ω , V
I
= 8 V, V
O
= 5.0 V 95%
R
SET
= 1.21 k Ω , V
O
= 3.3 V 94%
R
SET
= 2.38 k Ω , V
O
= 2.5 V 91%
η Efficiency I
O
= 16 A R
SET
= 4.78 k Ω , V
O
= 1.8 V 88%
R
SET
= 7.09 k Ω , V
O
= 1.5 V 87%
R
SET
= 12.1 k Ω , V
O
= 1.2 V
(1)
84%
R
SET
= 20.8 k Ω , V
O
= 1.0 V
(1)
82%
V
O
Ripple (peak-to-peak) 20-MHz bandwidth 15
(1)
mV
PP
I
LIM
Overcurrent threshold Reset, followed by auto-recovery 32 A
t
tr
Recovery time 70 µ s
w/o TurboTrans
C
O
= 220 µ F, TypeC
Δ V
tr
2.5 A/ µ s load step V
O
over/undershoot 150 mV
Transient response 50 to 100% I
O
max
t
trTT
w/ TurboTrans Recovery time 130 µ s
V
O
= 2.5 V
C
O
= 2000 µ F, TypeC
mV
Δ V
trTT
V
O
over/undershoot 30
R
TT
= short
I
IL
Track input current (pin 10) Pin to GND – 130
(3)
µ A
dV
track
/dt Track slew rate capability C
O
≤ C
O
(max) 1 V/ms
V
I
increasing, R
UVLO
= OPEN 4.3 4.45
Adjustable Under-voltage lockout
UVLO
ADJ
V
I
decreasing, R
UVLO
= OPEN 3.7 4.2 V
(pin 11)
Hysteresis, R
UVLO
≤ 52.3 k Ω 0.5
Input high voltage (V
IH
) Open
(4)
V
Inhibit control (pin 11) Input low voltage (V
IL
) -0.2 0.8
Input low current (I
IL
), Pin 11 to GND -235 µ A
I
in
Input standby current Inhibit (pin 11) to GND, Track (pin 10) open 5 mA
f
s
Switching frequency Over V
I
and I
O
ranges, SmartSync (pin 1) to GND 300 kHz
Synchronization (SYNC)
f
SYNC
240 400 kHz
frequency
V
SYNCH
SYNC High-Level Input Voltage 2 5.5 V
V
SYNCL
SYNC Low-Level Input Voltage 0.8 V
t
SYNC
SYNC Minimum Pulse Width 200 nSec
Nonceramic 330
(5)
C
I
External input capacitance µ F
Ceramic 22
(5)
(1) For output voltages ≤ 1.2 V, at nominal operating frequency, the output ripple may increase (typically 2 × ) when operating at input
voltages greater than (V
O
× 11). When using the SmartSync feature to adjust the switching frequency, see the SmartSync
Considerations section of the datasheet for further guidance.
(2) 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.
(3) 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 V
dc
.
(4) 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 section.
(5) A 330 µ F electrolytic and a 22 µ F ceramic input capacitor is required for proper operation. The electrolytic capacitor must be rated for a
minimum of 700 mA rms of ripple current.
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Product Folder Link(s): PTH08T220W PTH08T221W
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