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PT7771C PDF预览

PT7771C

更新时间: 2024-01-08 14:17:18
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关
页数 文件大小 规格书
4页 403K
描述
The PT7771 is a high-output Integrated grated Switching Regulator (ISR)

PT7771C 技术参数

生命周期:TransferredReach Compliance Code:unknown
风险等级:5.73模拟集成电路 - 其他类型:SWITCHING REGULATOR
JESD-30 代码:R-PSIP-T27端子数量:27
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端子形式:THROUGH-HOLE
端子位置:SINGLEBase Number Matches:1

PT7771C 数据手册

 浏览型号PT7771C的Datasheet PDF文件第2页浏览型号PT7771C的Datasheet PDF文件第3页浏览型号PT7771C的Datasheet PDF文件第4页 
PT7771—5V  
32 Amp “Sledge Hammer”  
Programmable ISR  
SLTS054A  
(Revised 6/30/2000)  
The output voltage is program-  
mable from 1.3V to 3.5V via a 5-bit  
input, compatible with Intels Pentiumâ  
Pro Processor. A differential remote  
sense is also provided to compensate  
for voltage drop between the ISR and  
load.  
An output capacitance of 2400µF is  
required for proper operation.  
Note that this product does not  
include short circuit protection.  
The PT7771 is a high-output Inte-  
grated Switching Regulator (ISR)  
housed in a 27-pin SIP package. The  
PT7771 operates off a standard 5V bus  
to provide a 32 amp low-voltage power  
source for the industrys latest high-  
speed µPs, ASICs, DSPs.  
The PT7771 has been designed to  
work in parallel with one or more of  
the PT7746 -32A current boosters to  
increase the load current capability in  
increments of 32A.  
Pin-Out Information  
Pin Function  
Pin Function  
14 GND  
15 GND  
16 GND  
17 GND  
Standard Application  
PROGRAMMING PINS  
1
2
3
4
5
6
7
8
VID0  
VID1  
VID0  
VID1  
VID2  
VID3  
VID4  
VID2  
REMOTE SENSE (+)  
VID3  
6
4
3
2
1
26  
STBY*- Stand-by  
18 GND  
19 GND  
VID4  
Vin  
L1  
VIN  
VOUT  
7 - 11  
20 - 25  
PT7770  
1 H  
20  
21  
22  
23  
24  
25  
V
out  
V
out  
V
out  
V
out  
V
out  
V
out  
Vin  
27  
13 - 19  
5
12  
+
+
9
Vin  
CIN  
COUT  
LOAD  
10 Vin  
11 Vin  
12 Remote Sense Gnd  
SYNC OUT  
GND  
GND  
STBY*  
13 GND  
26 Remote Sense V  
REMOTE SENSE (-)  
out  
27 Sync Out  
C
C
= Required 2400µF electrolytic  
= Required 2400µF electrolytic  
in  
out  
For STBY* pin; open = output enabled;  
ground = output disabled.  
L1 = Optional 1µH input choke  
Specifications  
PT7771  
Characteristics  
(T a = 25°C unless noted)  
Symbols  
Conditions  
Min  
Typ  
Max  
Units  
(1)  
(1)  
Output Current  
Io  
Ta = +60°C, 200 LFM, pkg N  
Ta = +25°C, natural convection  
0.1  
0.1  
32  
26  
A
A
(2)  
Input Voltage Range  
Vin  
0.1A Io 32A  
4.5  
5.5  
V
Output Voltage Tolerance  
Vo  
Vin = +5V, Io = 32A  
Vo-0.03  
Vo+0.03  
V
0°C Ta +55°C  
Line Regulation  
Regline  
Regload  
Vn  
4.5V Vin 5.5V, Io = 32A  
Vin = +5V, 0.1 Io 32A  
Vin = +5V, Io = 32A  
10  
10  
mV  
mV  
mV  
Load Regulation  
Vo Ripple/Noise pk-pk  
50  
Transient Response  
with Cout = 2400µF  
ttr  
Vos  
Io step between 16A and 32A  
Vo over/undershoot  
100  
200  
µSec  
mV  
Efficiency  
η
Vin = +5V, Io = 20A, Vo = 3.3V  
90  
%
Switching Frequency  
ƒo  
4.5V Vin 5.5V  
0.1A Io 32A  
650  
700  
750  
kHz  
Absolute Maximum  
Ta  
Over Vin Range  
0
+85 (3)  
°C  
Operating Temperature Range  
Storage Temperature  
Weight  
Ts  
-40  
+125  
°C  
Vertical/Horizontal  
53/66  
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 minimum input voltage is 4.5V or Vout +1.2V, whichever is greater.  
(3) Consult the SOA curves or contact the factory for the appropriate derating.  
Output Capacitors: The PT7771 regulator requires a minimum output capacitance of 2400µF for proper operation. Do not use Oscon type capacitors.  
The maximum allowable output capacitance is 30,000µF.  
Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 32ADC with a typical value of 1µH.  
The input capacitance must be rated for a minimum of 2.6Arms 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  

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