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參數(shù)資料
| 型號(hào)： | PTN78000AAH |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 9 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-5 |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 492K |
| 代理商： | PTN78000AAH |
www.ti.com
ELECTRICAL CHARACTERISTICS
PTN78000A
SLTS246B–APRIL 2005–REVISED JANUARY 2006
operating at 25°C free-air temperature, VI =12V,VO =–5V,IO =IO (max), C1 = 100 μF, C2 =2x4.7 μF, C3 = 100 μF (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO = –15 V
0.1
0.6 (1)
VO = –12 V
0.1
0.75 (1)
IO
Output current
TA = 85°C, natural convection airflow
A
VO =–5V
0.1
1.5 (1)
VO = –3.3 V
0.1
1.5 (1)
VO = –15 V
7
17 (2)
VO = –12 V
7
20 (2)
VI
Input voltage range
Over IO range
V
VO =–5V
7
27 (2)
VO = –3.3 V
7
28.7 (2)
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
Total output voltage
Includes set point, line, load
±3% (3)
variation
–40 < TA < 85°C
Output voltage adjust
7 V ≤ VI ≤ (32 – |VO|) V
–15
–3
VO Adj
V
range
VI =12V,RSET =100 Ω,VO = –15 V
83%
VI =12V,RSET =2kΩ,VO = –12 V
84%
η
Efficiency
VI =12V,RSET =28.7kΩ,VO = –5 V
82%
VI =12V,RSET =221 kΩ,VO = –3.3 V
77%
Output voltage ripple
20-MHz bandwidth
2% VO
V(PP)
IO(LIM)
Current limit threshold
ΔVO = –50 mV
3.2
A
1A/μs load step from 50% to 100% IOmax
Transient response
Recovery time
200
μs
VO over/undershoot
1
%VO
FS
Switching frequency
Over VI and IO ranges
440
550
660
kHz
UVLO
Undervoltage lockout
VI increasing
5.5
V
Ceramic
9.4 (4)
μF
CI
External input capacitance
Nonceramic
100 (4)
μF
Ceramic
200
μF
External output
CO
Nonceramic
100 (5)
1,000
μF
capacitance
Equivalent series resistance (nonceramic)
14 (6)
mΩ
Per Telcordia SR-332, 50% stress,
MTBF
Calculated reliability
8.9
106 Hrs
TA = 40°C, ground benign
(1) The maximum output current is 1.5 A or the maximum output power is 9 W, whichever is less.
(2) The maximum input voltage is limited and defined to be (32 – |VO|) volts.
(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-μF electrolytic capacitor and two 4.7-μF ceramic capacitors are required across the input (VI and GND) for proper operation.
Locate the ceramic capacitance close to the module.
(5) 100 μF 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 mΩ as the minimum when using maximum ESR values
to calculate.
3
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| PTN78000AAZ | 功能描述:DC/DC轉(zhuǎn)換器 1.5A Wide Inp/ Neg Out Adj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
| PTN78000AAZT | 功能描述:DC/DC轉(zhuǎn)換器 1.5A Wide Inp/ Neg Out Adj Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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