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参数资料
| 型号： | PTN78060HAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | DIP-7 |
| 文件页数： | 22/28页 |
| 文件大小： | 1948K |
| 代理商： | PTN78060HAH |
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ELECTRICAL CHARACTERISTICS
PTN78060W, PTN78060H
SLTS229A – NOVEMBER 2004 – REVISED APRIL 2005
operating at 25
°C free-air temperature, V
I = 20 V, VO = 5 V, IO = IO (max), CI = 2.2 F, CO = 100 F (unless otherwise noted)
PTN78060W
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IO
Output current
TA = 85°C, natural convection airflow
0
3
A
VI
Input voltage range
Over IO range
7 (1)
36 (2)
V
Set-point voltage tolerance
TA = 25°C
±2%(3)
Temperature variation
–40
°C to +85°C
±0.5%
Line regulation
Over VI range
±10
mV
VO
Load regulation
Over IO range
±10
mV
Includes set point, line, load
Total output voltage variation
±3% (3)
–40 < TA < 85°C
VI < 12 V
2.5
VI – 2
12 V
≤ V
I ≤ 15.1 V
2.5
VI – 2.5
VO (adj)
Output voltage adjust range
V
15.1 V < VI ≤ 25 V
2.5
12.6
VI > 25 V
0.1
× V
I
12.6
VI = 24 V, IO = 3 A
RSET = 732 , VO = 12 V
94%
η
Efficiency
RSET = 21 k, VO = 5 V
86%
RSET = 78.7 k, VO = 3.3 V
82%
Output voltage ripple
20-MHz bandwidth
1% VO
V(PP)
IO (LIM)
Current limit threshold
V
O = –50 mV
5.5
A
1-A/s load step from 50% to 100% IOmax
Transient response
Recovery time
100
s
VO over/undershoot
5
%VO
Input high voltage (VIH)
1
Open (4)
V
Inhibit control (pin 3)
Input low voltage (VIL)
–0.1
0.3
Input low current (IIL)
–0.25
mA
II(stby)
Input standby current
Pin 3 connected to GND
17
mA
FS
Switching frequency
Over VI and IO ranges
440
550
660
kHz
CI
External input capacitance
2.2 (5)
F
Ceramic or nonceramic
100 (6)
Ceramic
200
F
CO
External output capacitance
Nonceramic
2,000
Equivalent series resistance (nonceramic)
17 (7)
m
Per Telcordia SR-332, 50% stress,
MTBF
Calculated reliability
8.9
106 Hr
TA = 40°C, ground benign
(1)
For output voltages less than 10 V, the minimum input voltage is 7 V or (VO + 2) V, whichever is greater. For output voltages of 10 V
and higher, the minimum input voltage is (VO + 2.5) V. See the Application Information section for further guidance.
(2)
For output voltages less than 3.6 V, the maximum input voltage is 10
× V
O . See the Application Information section for further guidance.
(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 or better temperature stability.
(4)
This control pin has an internal pullup, and if left open-circuit, the module operates when input power is applied. The open-circuit voltage
is typically 1.5 V. A small, low-leakage (< 100 nA) MOSFET is recommended for control. An external pull-up resistor should not be used.
See the Application Information for further guidance.
(5)
An external 2.2-F ceramic capacitor is required across the input (VI and GND) for proper operation. Locate the capacitor close to the
module.
(6)
100 F of output capacitance is required for proper operation. See the Application Information section for further guidance.
(7)
This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 17 m
as the minimum when using max-ESR values to
calculate.
3
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