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参数资料
| 型号： | PTN78060AAH |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, DIP-7 |
| 文件页数： | 13/19页 |
| 文件大小： | 589K |
| 代理商： | PTN78060AAH |
www.ti.com
ELECTRICAL CHARACTERISTICS
SLTS245B – APRIL 2005 – REVISED AUGUST 2006
operating at 25°C free-air temperature, V
I = 20 V, VO = –5 V, IO = IO (max), C1 = 100 F, C2 = 3 × 4.7 F, C3 = 100 F, and
C
4 = 4.7 F (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO = –15 V
0.1
1 (1)
VO = –12 V
0.1
1.25 (1)
IO
Output current
TA = 85°C, natural convection airflow
A
VO = –5 V
0.1
3 (1)
VO = –3.3 V
0.1
3 (1)
VO = –15 V
9
17 (2)
VO = –12 V
9
20 (2)
VI
Input voltage range
Over IO range
V
VO = –5 V
9
27 (2)
VO = –3.3 V
9
28.7 (2)
Set-point voltage
TA = 25°C
±2%(3)
tolerance
Temperature variation
–40°C to +85°C
±0.5%
VO
Line regulation
Over VI range
±10
mV
Load regulation
Over IO range
±10
mV
Total output voltage
Includes set point, line, load
±3% (3)
variation
–40 < TA < 85°C
Output voltage adjust
9 V
≤ V
I ≤ (32 - |VO|) V
–15
–3
VO
V
range
RSET = 100 , IO = 1 A, VO = –15 V
88%
RSET = 2 k, IO = 1.25 A, VO = –12 V
87%
η
Efficiency
RSET = 28.7 k, IO = 3 A, VO = –5 V
82%
RSET = 221 k, IO = 3 A, VO = –3.3 V
77%
Output voltage ripple
20-MHz bandwidth
2% VO
V(PP)
IO (LIM)
Current limit threshold
V
O = –50 mV
5.5
A
Recovery time
200
s
1-A/s load step from 50% to 100%
Transient response
IOmax
VO over/undershoot
2
%VO
FS
Switching frequency
Over VI and IO ranges
440
550
660
kHz
UVLO
Undervoltage lockout
VI increasing
5.5
V
Ceramic
14.1 (4)
External input
CI
F
capacitance
Nonceramic
100 (4)
Ceramic
200
F
External output
CO
Nonceramic
100 (5)
1000
capacitance
Equivalent series resistance (nonceramic)
14 (6)
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 A or a maximum output power of 15 W, whichever is less.
(2)
The maximum input voltage is limited and defined to be (32 - |VO|).
(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)
A 100-F electrolytic capacitor and three 4.7-F ceramic capacitors are required across the input (VI and GND) for proper operation.
Locate the ceramic capacitors close to the module.
(5)
100 F of output capacitance is required for proper operation. See the application information for further guidance.
(6)
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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