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參數(shù)資料
| 型號： | PTB48520WAS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | DIP-10 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 427K |
| 代理商： | PTB48520WAS |
www.ti.com
PACKAGE SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
PTB48520W
SLTS233A–NOVEMBER 2004–REVISED APRIL 2005
PTB48520W (Suffixes AH and AS)
Weight
28.5 grams
Flammability
Meets UL94V-O
Horizontal T/H (Suffix AH)
250 Gs (1)
Per Mil-STD-883D, Method 2002.3
Mechanical shock
1 msec, 1/2 Sine, mounted
Horizontal SMD (Suffix AS)
150 Gs (1)
Horizontal T/H (Suffix AH)
15 Gs (1)
Mil-STD-883D, Method 2007.2
Mechanical vibration
20-2000 Hz, PCB mounted
Horizontal SMD (Suffix AS)
5 Gs (1)
(1) Qualification limit.
(Unless otherwise stated, TA = 25°C, VI =48V,VO = 3.3 V, CO = 0 F, and IO =IOmax)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IO Bus
0
25 (1)
Over VI range
A
IO
Output current
IO Seq
0
10 (1)(2)
Sum total IO Bus+IO Seq
0
25
A
VI
Input voltage range
Over IO range
36
48
75
V
Set-point voltage tolerance
±0.6 (3)
%Vo
Temperature variation
-40°C ≤ TA ≤ 85°C
±0.8
%Vo
Line regulation
Over VI range
±1
mV
VO
Load regulation
Over IO range
±1
mV
Total output voltage variation Includes set-point, line, load, –40°C ≤ TA≤ 85°C
±1.5
±3 (3)
%Vo
Adjust range
Over VI range
1.8
3.6
V
RSET =887 ,VO = 3.3 V
91%
RSET =6.98k,VO = 2.5 V
90%
η
Efficiency
IO =15A
RSET =35.7k,VO = 2.0 V
89%
RSET = open cct. VO = 1.8 V
88%
VO Ripple (peak-to-peak)
20 MHz bandwidth
20
mVpp
1 A/s load step, 50% to 100% IOmax
Transient Response
Recovery time
75
s
VO over/undershoot
±3
%Vo
Input current
Pin connected to VO COM
-0.13
mA
Track input (pin 4)
Open-circuit voltage
0
Vo Bus
V
Input slew rate limits
0.1 (4)
1V/ms
Referenced to -VI (pin 3)
Input high voltage (VIH)
2
Open (5)
Output enable input (pin 2)
V
Input low voltage (VIL)-0.2
0.8
Input low current (IIL)
–480
A
Standby input current
Pin 2 open
2
mA
No-load input current
Pins 2 and 3 connected, IO Tot = 0
50
mA
Overcurrent threshold, IO (tot) Shutdown, followed by autorecovery
40
A
(1) See temperature derating curves for safe operating area (SOA), or consult factory for appropriate derating.
(2) When load current is supplied from the VO Seq output, the module exhibits higher power dissipation and slightly lower operating
efficiency.
(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 temperature stability.
(4) When controlling the Track input from an external source, the slew rate of the applied signal must be greater than the minimum limit.
Failure to allow the voltage to completely rise to the voltage at the VO (bus) output, at no less than the minimum specified rate, may
thermally overstress the converter.
(5) The VO Enable input has an internal pull-up, and if left open the converter output isturned off. A discrete MOSFET or bipolar transistor is
recommended to control this input. The open-circuit voltage is approximately 20% of the input voltage. If the output enable feature is not
used, this pin should be permanently connected to –VI. See the application information for other interface considerations.
3
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