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參數(shù)資料
| 型號： | PTB78560CAH |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, DIP11 |
| 文件頁數(shù)： | 24/27頁 |
| 文件大小： | 643K |
| 代理商： | PTB78560CAH |
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PTB78560C ELECTRICAL CHARACTERISTICS
SLTS249 – JUNE 2005
(Unless otherwise stated, T
A = 25°C, VI = 24 V, VO = 12 V, CO = 100 F, and IO = IOmax)
PTB78560C
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
IO
Output current
Over VI range
IO Bus
0.1 (1)
2.5 (2)
A
VI
Input voltage range
Over IO range
18
24
60
V
Set-point voltage tolerance
±1 (3)
%VO
Temperature variation
-40°C
≤ T
A ≤ 85°C
±0.5
%VO
Line regulation
Over VI range
±0.2
±1
%VO
VO
Load regulation
Over IO range
±0.4
±1
%VO
Total output voltage variation
Includes set-point, line, load, –40°C
≤ T
A ≤ 85°C
±2
±3 (3)
%VO
Adjust range
Over VI range
9
13.2
V
RSET = 9.09 k, VO =12 V
88%
η
Efficiency
RSET = open, VO = 9 V
86%
VO Ripple (peak-to-peak)
20-MHz bandwidth
1
%VO
0.1 A/s load step,
Recovery time
100
s
Transient Response
50% to 100%
VO over/undershoot
±150
mV
IOmax
Input current
Track connected to -Sense
–0.48
mA
Track input (pin 5)
Open-circuit voltage
0
VO Bus
Referenced to -VI
Input high voltage (VIH)
2
Open (4)
V
Output enable inputs (pins 2, 3)
Input low voltage (VIL)
-0.2
0.8
Input low current (IIL)
–0.8
mA
Standby input current
Pins 2 and 3 open
8
16
mA
IO Bus
Overcurrent threshold
Shutdown, followed by autorecovery
3.75
A
VI increasing
17
UVLO
Undervoltage lockout
V
VI decreasing
16
S
Switching frequency
Over VI range
400
500
600
kHz
Internal input capacitance
1
F
External input capacitance
Between +VI and –VI
100
F
External output capacitance
Between both outputs and VO COM
100
1,500
F
Isolation voltage
Input-output
1,500
Vdc
Isolation capacitance
Input-output
2,000
pF
Isolation resistance
Input-output
10
M
Telcordia SR-332 50% stress, TA = 40°C, ground
MTBF
Reliability
3.4
106 Hrs
benign
(1)
The converter requires a minimum load current for proper operation. The converter is not damaged when operated under a no-load
condition.
(2)
See temperature derating curves for safe operating area (SOA), to determine output current derating at elevated ambient temperatures.
(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)
The PEN and NEN enable inputs each have an internal pullup resistor. If the enable feature is not used, the PEN input (pin 2) should be
left open circuit and the NEN input (pin 3) permanently connected to –VI. A discrete MOSFET or bipolar transistor is recommended for
the enable control. The open-circuit voltage is less than 10 V. See the Application Information for a more detailed description.
6
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