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PT7705A

更新时间： 2024-02-18 18:46:53
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
6页 223K
描述
15A SWITCHING REGULATOR, 750kHz SWITCHING FREQ-MAX, PSIP27, SIP-27

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PT7705A 技术参数

生命周期：Transferred包装说明：SIP-27
Reach Compliance Code：unknown风险等级：5.75
模拟集成电路 - 其他类型：SWITCHING REGULATOR最大输入电压：5.5 V
最小输入电压：4.5 V标称输入电压：5 V
JESD-30 代码：R-PSIP-T27功能数量：1
端子数量：27最高工作温度：65 °C
最低工作温度：最大输出电流：15 A
标称输出电压：1.5 V封装主体材料：PLASTIC/EPOXY
封装形状：RECTANGULAR封装形式：IN-LINE
认证状态：Not Qualified表面贴装：NO
最大切换频率：750 kHz温度等级：COMMERCIAL
端子形式：THROUGH-HOLE端子位置：SINGLE
Base Number Matches：1

PT7705A 数据手册

 浏览型号PT7705A的Datasheet PDF文件第2页浏览型号PT7705A的Datasheet PDF文件第3页浏览型号PT7705A的Datasheet PDF文件第4页浏览型号PT7705A的Datasheet PDF文件第5页浏览型号PT7705A的Datasheet PDF文件第6页 
PT7705—5V  
18 Amp “Big-Hammer” Programmable  
Integrated Switching Regulator  
SLTS045A  
(Revised 6/30/2000)  
The PT7705 is a series of high-  
performance, 18 Amp Integrated  
Switching Regulators (ISRs) housed in  
a 27-pin SIP package. The 18A capa-  
bility allows easy integration of the  
latest high-speed, low-voltage µPs and  
bus drivers into existing 5V systems.  
The PT7705 series has been de-  
ments of 18A.  
The output voltage of the PT7705  
can be easily programmed from 1.3V  
to 3.5V with a 5 bit input compatible  
with Intel’s Pentium II Processor.  
A differential remote sense is also  
provided which automatically com-  
pensates for any voltage drop from the  
ISR to the load.  
signed to work in parallel with one or  
more of the PT7749 - 18A current  
boosters for increased Iout in incre-  
1200µF of output capacitance are  
required for proper operation.  
Pin-Out Information  
Pin Function  
Standard Application  
Pin Function  
10 Vin  
11 Vin  
Pin Function  
18 GND  
19 GND  
20 Vout  
PROGRAMMING PINS  
VID0  
VID1  
1
2
3
4
5
6
7
8
9
VID0  
VID1  
VID2  
VID3  
STBY* - Stand-by  
VID4  
Vin  
VID2  
VID3  
VID4  
REMOTE SENSE (+)  
6
4
3
2
1
26  
L1  
VIN  
VOUT  
12 Remote Sense Gnd  
13 GND  
14 GND  
15 GND  
16 GND  
17 GND  
7
-
11  
20 - 25  
PT7705  
1µH  
21 Vout  
22 Vout  
27  
13  
-
19  
5
12  
+
+
CIN  
COUT  
LOAD  
SYNC OUT  
GND  
23 Vout  
GND  
24 Vout  
STBY*  
REMOTE SENSE (-)  
Vin  
Vin  
25 Vout  
26 Remote Sense V  
27 Sync Out  
C
C
= Required 1200µF electrolytic  
= Required 1200µF electrolytic  
in  
out  
out  
For STBY* pin; open = output enabled  
ground = output disabled.  
L1 = Optional 1µH input choke  
Specifications  
PT7705 SERIES  
Typ  
Characteristics  
(Ta = 25°C unless noted)  
Symbols  
Conditions  
Min  
Max  
Units  
(1)  
(1)  
(2)  
(2)  
Output Current  
Io  
Ta = +60°C, 200 LFM, pkg N  
Ta = +25°C, natural convection  
0.1  
0.1  
—
—
18  
15  
A
V
V
(3)  
Input Voltage Range  
Vin  
0.1A ≤ Io ≤ 15A  
4.5  
—
5.5  
Output Voltage Tolerance  
∆Vo  
Vin = +5V, Io = 15A  
Vo-0.03  
—
Vo+0.03  
0°C ≤ Ta ≤ +65°C  
Line Regulation  
Load Regulation  
Vo Ripple/Noise  
Regline  
Regload  
Vn  
4.5V ≤ Vin ≤ 5.5V, Io = 15A  
Vin = +5V, 0.1 ≤ Io ≤ 15A  
Vin = +5V, Io = 15A  
—
—
—
±10  
±10  
50  
—
—
—
mV  
mV  
mV  
Transient Response  
with Cout = 1200µF  
ttr  
Io step between 7.5A and 15A  
Vo over/undershoot  
—
—
100  
200  
—
—
µSec  
mV  
Vos  
Efficiency  
η
Vin = +5V, Io = 10A  
Vo = 3.3V  
Vo = 2.9V  
Vo = 2.5V  
Vo = 1.8V  
Vo = 1.5V  
—
—
—
—
—
89  
87  
85  
79  
77  
—
—
—
—
—
%
Switching Frequency  
ƒo  
4.5V ≤ Vin ≤ 5.5V  
0.1A ≤ Io ≤ 15A  
650  
0
700  
—
750  
kHz  
°C  
Absolute Maximum  
Ta  
Ts  
Over Vin Range  
+85 (4)  
Operating Temperature Range  
Storage Temperature  
Mechanical Shock  
—
-40  
—
+125  
°C  
Per Mil-STD-883D, Method 2002.3  
1 msec, Half Sine, mounted to a fixture  
—
—
—
500  
10  
—
—
—
G’s  
Mechanical Vibration  
Weight  
Per Mil-STD-883D, Method 2007.2,  
20-2000 Hz, Soldered in a PC board  
G’s  
—
Vertical/Horizontal  
31/41  
grams  
Notes: (1) ISR will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.  
(2) The PT7705 series can be easily paralleled with one or more of the PT7749 Current Boosters to provide increased output current in increments of 18A.  
(3) The minimum input voltage is 4.5V or V +1.2V, whichever is greater.  
out  
(4) See SOA curves or consult the factory for the appripriate derating.  
Output Capacitors: The PT7705 series requires a minimum ouput capacitance of 1200µF for proper operation. Do not use Oscon type capacitors. The maximum  
allowable output capacitance is 15,000µF. See Capacitor Application Note.  
Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 15ADC with a typical value of 1µH. The input capacitance must  
be rated for a minimum of 1.3Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.  
For technical support and more information, see inside back cover or visit www.ti.com/powertrends  
123456

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