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参数资料
| 型号： | PT8125A |
| 英文描述： | SMPS Controller |
| 中文描述： | 开关电源控制器 |
| 文件页数： | 6/10页 |
| 文件大小： | 182K |
| 代理商： | PT8125A |
For technical support and more information, see inside back cover or visit www.ti.com
PT8120 Series
30-A 12-V Input Programmable
Integrated Switching Regulator
PT8124 Specifications (Unless otherwise stated Ta =25°C, Cin =1,500F, Cout =660F, Vin =12V, & Io = Iomax )
PT8124 Only
Characteristics
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Natural convection or
0.1 (1)
—30
A
60°C with 200LFM airflow
Input Voltage Range
Vin
Over Io Range
10.8
—
13.2
V
Set-Point Voltage Tolerance
Vo tol
Over Vo range, Io =0.5A
—
±1
±2
%V
Line Regulation
Regline
Over Vin range
—
±10
—
mV
Load Regulation (Droop)
Regload
Over Io range
—
2
—
mV/A
Temperature Variation
Regtemp
–40°C
≤Ta ≤85°C, , Io =0.5A
—
±0.5
—
%Vo
Total Output Voltage Variation
Votot
Includes set-point, line, load
—
85 (2)
mV
–40°C
≤Ta ≤ 85°C
Efficiency
η
Io =15A
Vo =1.8V
—
86
—
Vo =1.5V
—
84
—
%
Vo =1.2V
—
81
—
Io =Iomax
Vo =1.8V
—
84
—
Vo =1.5V
—
82
—
%
Vo =1.2V
—
78
—
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
—
20
—
mV
Transient Response
ttr
1A/s load step, 50% to 100% Iomax
—
50
—
Sec
Vtr
Vo over/undershoot
—
50
—
mV
Over-Current Threshold
ITRIP
Reset followed by auto-recovery
—
47
—
A
Switching Frequency
s
Over load range
300
350
400
kHz
Standby Control (pin 6)
Referenced to GND (pins 17–22)
Input High Voltage
VIH
—
Open (3)
V
Input Low Voltage
VIL
-0.2
—
0.8
Input Low Current
IIL
Pin 6 to GND
—
0.5
—
mA
Standby Input Current
Iin standby
Pin 6 to GND
—
35
—
mA
External Output Capacitance
Cout
See PT8124 application schematic
660 (4)
—
30,000
F
External Input Capacitance
Cin
See PT8124 application schematic
1,500
—
F
Operating Temperature Range
Ta
Over Vin Range
–40 (5)
—+85 (6)
°C
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
—
500
—
G’s
1 msec, Half Sine, mounted to a fixture
Mechanical Vibration
Mil-STD-883D, Method 2007.2
—
20 (7)
—
G’s
20-2000 Hz, soldered in PCB
Weight
—
Vertical/Horizontal
—
55
—
grams
Flammability
—
Materials meet UL 94V-0
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) Total output voltage variation includes load regulation droop, which is required for compliance with specification VRM 8.5-4
(3) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the PT812x will operate when input power is applied. A low-leakage
MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.
(4) The PT8120 regulators require a minimum of 660F, low ESR ouput capacitance (1,200F for standard aluminum electrolytic) for proper operation.
(5) For operation below 0°C, Cout must have stable characteristics. Use either low ESR tantalum or Oscon capacitors.
(6) See safe Operating Area curves or consult factory for the appropriate derating.
(7) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.
Input Filter: An input filter inductor is optional for most applications. The inductor must be rated to handle the projected input current. A rating of 10ADC for
Vout ≤3.3V, and 15ADC for Vout ≥4.5V is recommended. The input capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic
load applications, additional capacitance may be required. For more information consult the application note on capacitor selection.
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相关代理商/技术参数 |
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| PT8125C | 功能描述:DC/DC转换器 4.5-7.6V 28A 12V In Multiphase Prog ISR 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: |
| PT8125N | 功能描述:开关变换器、稳压器与控制器 4.5-7.6V 28A 12V In Multiphase Prog ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT812BB | 功能描述:CBL ASSY PIGTAIL 12' BNCM BNCM RoHS:是 类别:电缆组件 >> 同轴，RF 系列:* 标准包装:1 系列:* |
| PT812NB | 功能描述:CBL ASSY PIGTAIL 12' NM BNCM RoHS:是 类别:电缆组件 >> 同轴，RF 系列:* 标准包装:1 系列:* |
| PT812NN | 功能描述:CBL ASSY PIGTAIL 12' NM NM RoHS:是 类别:电缆组件 >> 同轴，RF 系列:* 标准包装:1 系列:* |
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