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參數(shù)資料
| 型號： | PT7705A |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PSIP27 |
| 封裝： | HORIZONTAL THROUGH HOLE, SIP-27 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 205K |
| 代理商： | PT7705A |
Standard Application
For STBY* pin; open = output enabled; ground = output
disabled.
Pin-Out Information
Pin Function
1
VID0
2
VID1
3
VID2
4
VID3
5
STBY* - Stand-by
6
VID4
7Vin
8Vin
9Vin
Pin Function
10
Vin
11
Vin
12
Remote Sense Gnd
13
GND
14
GND
15
GND
16
GND
17
GND
18
GND
Series
PT7705
The PT7705 is a new 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 Ps and
bus drivers into existing 5V systems.
The PT7705 series has been de-
signed to work in parallel with one or
more of the PT7749 - 18A current
boosters for increased Iout in incre-
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 pro-
vided which automatically compensates
for any voltage drop from the ISR to
the load.
1200F of output capacitance are
required for proper operation.
For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
38
Cin = Required 1200F electrolytic
Cout= Required 1200F electrolytic
L1 = Optional 1H input choke
PT7705
7 - 11
13 - 19
20 - 25
27
V
IN
GND
1H
GND
V
OUT
C
OUT
+
C
IN
+
12
26
1
L1
SYNC OUT
LOAD
REMOTE SENSE (+)
REMOTE SENSE (-)
VID1
VID2
VID3
VID4
PROGRAMMING PINS
2
3
4
STBY*
5
6
VID0
18 AMP “BIG-HAMMER” PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR
Pin Function
19
GND
20
Vout
21
Vout
22
Vout
23
Vout
24
Vout
25
Vout
26
Remote Sense Vout
27
Sync Out
Specifications
Characteristics
PT7705 SERIES
(T
a = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = +60°C, 200 LFM, pkg N
0.1*
—18**
A
Ta = +25°C, natural convection
0.1*
—15**
A
Input Voltage Range
Vin
0.1A
≤ Io ≤ 15A
4.5***
—
5.5
V
Output Voltage Tolerance
Vo
Vin = +5V, Io = 15A
Vo-0.03
—
Vo+0.03
V
0°C
≤ Ta ≤ +65°C
Line Regulation
Regline
4.5V
≤ Vin ≤ 5.5V, Io = 15A
—
±10
—
mV
Load Regulation
Regload
Vin = +5V, 0.1 ≤ Io ≤ 15A
—
±10
—
mV
Vo Ripple/Noise
Vn
Vin = +5V, Io = 15A
—
50
—
mV
Transient Response
ttr
Io step between 7.5A and 15A
—
100
—
Sec
with Cout = 1200F
Vos
Vo over/undershoot
—
200
—
mV
Efficiency
η
Vin = +5V, Io = 10A
Vo = 3.3V
—
89
—
%
Vo = 2.9V
—
87
—
%
Vo = 2.5V
—
85
—
%
Vo = 1.8V
—
79
—
%
Vo = 1.5V
—
77
—
%
Switching Frequency
o
4.5V
≤ Vin ≤ 5.5V
650
700
750
kHz
0.1A
≤ Io ≤ 15A
Absolute Maximum
Ta
—0
—
+85
°C
Operating Temperature Range
Recommended Operating
Ta
Forced Air Flow = 200 LFM
0
—
+65****
°C
Temperature Range
Over Vin and Io Ranges
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
—10
—
G’s
20-2000 Hz, Soldered in a PC board
Weight
—
Vertical/Horizontal
—
31/41
—
grams
* ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.
**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.
*** The minimum input voltage is 4.5V or Vout+1.2V, whichever is greater.
****See SOA curves.
Output Capacitors: The PT7705 series requires a minimum ouput capacitance of 1200F for proper operation. Do not use Oscon type capacitors. The maximum
allowable output capacitance is 15,000F. 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 1H. 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.
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT7706C | 18 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7706N | 18 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7707A | 18 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7707C | 18 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7707N | 18 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT7705C | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 PROGRAMMABLE ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PT7705N | 功能描述:DC/DC轉(zhuǎn)換器 PROGRAMMABLE ISR 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: |
| PT7705N1 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.3 to 3.5Vout 18Amp 5Vin Prgrmable ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PT7706 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGULATOR |
| PT7706A | 功能描述:REGU 15A 1.3-2.05V 4BIT 3.3V IN RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT7700 標(biāo)準(zhǔn)包裝:10 系列:PT4570 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點:- 安裝類型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W |
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