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参数资料
| 型号： | PTH03050YAS |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | DIP-6 |
| 文件页数： | 16/18页 |
| 文件大小： | 1004K |
| 代理商： | PTH03050YAS |
www.ti.com
Ceramic Capacitors (Recommended)
Tantalum Capacitors
Capacitor Table
PTH03050Y
PTH05050Y
PTH12050Y
SLTS221A–MARCH 2004–REVISED OCTOBER 2005
APPLICATION INFORMATION (continued)
Above 150 kHz the performance of aluminum electrolytic capacitors becomes less effective. To further improve
the reflected input ripple current or the output transient response. Multilayer ceramic capacitors have very low
ESR and their resonant frequency higher than the bandwidth of the regulator. They can be used to reduce the
reflected ripple current at the input as well as improve the transient response of the output. When used on the
output their combined ESR is not critical as long as the total value of ceramic capacitance does not exceed
300 F. Also, to prevent the formation of local resonances, do not place more than five identical ceramic
capacitors in parallel with values of 10 F or greater.
Tantalum type capacitors can be used at both the input and output, and are recommended for applications where
the ambient operating temperature can be less than 0°C. The AVX TPS, Sprague 593D/594/595 and Kemet
T495/T510 capacitor series are suggested over many other tantalum types due to their higher rated surge, power
dissipation, and ripple current capability. As a caution many general purpose tantalum capacitors have
considerably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are
also less reliable when determining their power dissipation and surge current rating. Tantalum capacitors that do
not have a stated ESR or surge current rating are not recommended for power applications.
When specifying Os-Con and polymer tantalum capacitors for the output, the minimum ESR limit will be
encountered well before the maximum capacitance value is reached.
Table 1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple
current (rms) ratings. The recommended number of capacitors required at both the input and output buses is
identified for each capacitor type.
This is not an extensive capacitor list. Capacitors from other vendors are available with comparable
specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical
parameters necessary to insure both optimum regulator performance and long capacitor life.
Table 1. Input/Output Capacitors(1)
Capacitor Characteristics
Quantity
Capacitor Vendor,
Vendor
Working
Max ESR
Max Ripple
Physical
Value
Input
Output
Type/Series (Style)
Part Number
Voltage
at 100 kHz
Current at 85°CSize
(F)
Bus
(V)
()
(Irms) (mA)
(mm)
Panasonic, Aluminum
FC (Radial)
10
470
0.117
555
8×10
1
EEUFC1A471
FK (SMD)
25
470
0.080
850
10×10.2
1
EEVFK1E471P
FC (SMD)
16
470
0.150
670
10×10.2
1
EEVFC1C471P
United Chemi-Con
PXA, Poly-Aluminum (SMD)
6.3
470
0.020
>4100
10×7.7
1
≤2
PXA6.3VC471MJ80TP
PS, Poly-Aluminum (Radial)
6.3
390
0.012
4770
8×11.5
1
≤1(2)
6PS390MH11
PSA, Poly-Aluminum (Radial)
10
470
0.008
5650
8×11,5
1
≤1
PSA10VB470MJ11
LXZ, Aluminum (Radial)
16
470
0.090
760
10×12.5
1
LXZ16VB471M10X12LL
Panasonic, Poly-Aluminum
S/SE (SMD)
6.3
180
0.005
4000
7.3×4.3×4.2
2
N/R(3)
EEFSE0J181R
(1) Capacitor Supplier Verification
Please verify availability of capacitors identified in this table. Capacitor suppliers may recommend alternative part numbers because of
limited availability or obsolete products. In some instances, the capacitor product life cycle may be in decline and have short-term
consideration for obsolescence.
RoHS, Lead-free and Material Details
Please consult capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process
requirements. Component designators or part number deviations can occur when material composition or soldering requirements are
updated.
(2) The total capacitance can be slightly lower than recommended minimum, but is acceptable based on the combined ripple current rating.
(3) This capacitor is not recommended for the VO bus. The capacitor ESR is below the specified minimum for non-ceramic capacitor.
7
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| PTH12050YAS | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
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| PTH03050YAZ | 功能描述:DC/DC转换器 6A 3.3V-In Bus Term Pwr Mdl for DDR/QDR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH03050YAZT | 功能描述:DC/DC转换器 2.95-3.65Vin 6A 0.870" x0.495"x0.335 RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH03050YBH | 功能描述:DC/DC转换器 6A3.3Vin Bus Term Pwr Mod RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PTH0305YAZ | 制造商:Texas Instruments 功能描述: |
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