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参数资料
| 型号： | PTN78060WAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A SWITCHING REGULATOR, 660 kHz SWITCHING FREQ-MAX, DMA10 |
| 文件页数： | 19/24页 |
| 文件大小： | 1871K |
| 代理商： | PTN78060WAH |
www.ti.com
ELECTRICAL CHARACTERISTICS
PTN78060W, PTN78060H
SLTS229A – NOVEMBER 2004 – REVISED APRIL 2005
operating at 25
°C free-air temperature, V
I = 24 V, VO = 12 V, IO = IO (max), CI = 3 × 4.7 F, CO = 100 F (unless otherwise
noted)
PTN78060H
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO = 12 V
0
3 (1)
TA = 85°C, natural convection
IO
Output current
VO = 15 V
0
3 (1)
A
airflow
VO = 22 V
0
2 (1)
VI
Input voltage range
Over IO range
15 (2)
36
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 < 19 V
11.85
VI – 3
19 V
≤ V
I ≤ 25 V
11.85
VI – 4
VO (adj)
Output voltage adjust range
V
VI≥ 26 V
11.85
22
VI = 24 V, RSET = 383 k , VO = 12 V
93%
η
Efficiency
VI = 24 V, RSET = 15 k, VO = 15 V
95%
IO = 2 A, VI = 32 V, RSET = 95.3 , VO = 22 V,
96%
Output voltage ripple
20-MHz bandwidth
1.2% 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
Ceramic or nonceramic
14.1 (5)
F
Ceramic
0
200
F
CO
External output capacitance
Nonceramic
100 (6)
2,000
Equivalent series resistance (nonceramic)
10 (7)
m
Per Telcordia SR-332, 50% stress,
MTBF
Calculated reliability
8.9
106 Hr
TA = 40°C, ground benign
(1)
The maximum output current is 3 amps or a maximum output power of 45 W, whichever is less. See the Application Information section
for further guidance.
(2)
For output voltages less than 19 V, the minimum input voltage is 15 V or (VO + 3) V, whichever is greater. For output voltages of 19 V
and higher, the minimum input voltage is (VO + 4) V. See the Application Information 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. See the Application Information section for
further guidance.
(5)
Three external 4.7-F ceramic capacitors are 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.
4
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