參數(shù)資料
型號(hào)： PTH08000WAS1
廠商： Texas Instruments, Inc.
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 抗輻射高效，5安培開(kāi)關(guān)穩(wěn)壓器
文件頁(yè)數(shù)： 3/20頁(yè)
文件大小： 1402K
代理商： PTH08000WAS1
www.ti.com
ELECTRICAL CHARACTERISTICS
at 25°C free-air temperature, V
I
= 12 V, V
O
= 3.3 V, I
O
= I
O
max, C
I
= 100 μF (unless otherwise noted)
PTH08000W
SLTS248–JUNE 2005
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I
O
V
I
Output current
T
A
= 85°C, natural convection airflow
Over I
O
range
T
A
= 25°C
-40
≤
T
A
≤
85°C
Over V
I
range
Over I
O
range
Includes set-point, line, load, -40
°
C
≤
T
A
≤
85°C
Over I
O
range
R
SET
= 346
, V
O
= 5 V
R
SET
= 1.87 k
, V
O
= 3.3 V
R
SET
= 3.74 k
, V
O
= 2.5 V
T
A
= 25°C,
R
SET
= 6.19 k
, V
O
= 2 V
I
O
= 2 A
R
SET
= 8.06 k
, V
O
= 1.8 V
R
SET
= 13 k
, V
O
= 1.5 V
R
SET
= 27.4 k
, V
O
= 1.2 V
20-MHz bandwidth
0
2.25
A
Input voltage range
4.5
(1)
14
V
Set-point voltage tolerance
±2
(2)
%
Temperature variation
±0.5
%V
O
mV
V
O
Line regulation
±7
Load regulation
±0.13
%V
O
%V
O
V
Total output voltage variation
3
(2)
V
(ADJ)
Output Voltage Adjust Range
0.9
5.5
93.5%
92%
90.5%
η
Efficiency
89.5%
88%
86.5%
84.5%
Output voltage ripple
40
mV
PP
A
Overcurrent threshold
Reset, followed by autorecovery
3.5
C
= 100 μF, 1
A/μs load step
from 50% to
100% I
O
max
Pin to GND
Recovery time
50
μs
Transient response
V
O
over/undershoot
100
mV
I
IL
track
dV
track
/dt
Track input current (pin 2)
–130
μA
Track slew rate capability
C
O
≤
C
O
(max)
V
I
= increasing
V
I
= decreasing
Input high voltage (V
IH
)
Input low voltage (V
IL
)
Input low current (I
IL
)
Pins 5 and 2 connected
1
V/ms
4.35
4.5
UVLO
Undervoltage lockout
V
3.6
4
V
I
– 0.5
–0.2
Open
(3)
V
Inhibit control (pin 5)
0.5
–5
μA
I
I
(stby)
f
S
Input standby current
1
mA
Switching frequency
Over V
I
and I
O
ranges
Electrolytic type (C
I
)
Ceramic type (C
O
)
Nonceramic type (C
O
)
Equivalent series resistance (nonceramic)
300
kHz
External input capacitance
100
(4)
μF
220
μF
External output capacitance
100
(5)
330
(6)
10
(7)
m
Per Telcordia SR-332, 50% stress,
T
A
= 40°C, ground benign
MTBF
Calculated reliability
10.3
10
6
Hr
(1)
(2)
The minimum input voltage is 4.5 V or (V
+ 1.1) V, whichever is greater.
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.
This control pin has an internal pullup to the input voltage V
. If it is left open-circuit, the module operates when input power is applied. A
small, low-leakage (< 100 nA) metal-oxide semiconductor field effect transistor (MOSFET) is recommended for control. See the
Application Information for further guidance.
An external 100-μF electrolytic capacitor is required across the input (V
I
and GND) for proper operation. Locate the capacitor close to
the module.
An external output capacitor is not required for proper operation. Adding 100 μF of distributed capacitance at the load improves the
transient response.
This is the calculated maximum capacitance. The minimum ESR limitation often results in a lower value. See the capacitor application
information for further guidance.
This is the minimum ESR for all the electrolytic (nonceramic) capacitance. Use 14 m
as the minimum when calculating the total
equivalent series resistance (ESR) using the maximum ESR values specified by the capacitor manufacturer.
(3)
(4)
(5)
(6)
(7)
3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PTH08000WAS2 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR
PTH08000WAST 功能描述:DC/DC轉(zhuǎn)換器 2.25A 5/12V Input WideAdj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08000WAZ 功能描述:DC/DC轉(zhuǎn)換器 2.25A 5/12V Input WideAdj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH08000WAZ1 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR
PTH08000WAZ2 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:2.25-A, WIDE INPUT, ADJUSTABLE SWITCHING REGULATOR
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