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参数资料
| 型号： | PT7709A |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, SMA27 |
| 封装： | SIP-27 |
| 文件页数： | 1/2页 |
| 文件大小： | 50K |
| 代理商： | PT7709A |
Standard Application
For STBY* pin:
open = output enabled
ground = output disabled.
Pin-Out Information
Pin Function
1
VID0
2
VID1
3
VID2
4VID3
5
STBY* - Stand-by
6
VID4
7Vin
8Vin
9Vin
Pin Function
10
Vin
11
Vin
12
Remote Sense Gnd
13
GND
14GND
15
GND
16
GND
17
GND
18
GND
PT7709
The PT7709 is the next genera-
tion “Big Hammer” series of high-
performance, 20 Amp Integrated
Switching Regulators (ISRs), which is
made available in Power Trends’
standard 27-pin SIP package. The
PT7709 improves on the popular
PT7705 series with up to 20A cur-
rent capability and short circuit
protection.
The PT7709 series series is suit-
able for new 5V system designs that
require power for the latest high-
speed, low-voltage Ps, and bus
drivers.
The PT7709 output can be easily
programmed from 1.3V to 3.5V with
a 5 bit input, that is compatible with
the Intel Pentium Processor.
A differential remote sense is provided
to compensates for any voltage drop
between the ISR and load.
Only 330F of output capacitance
are required for proper operation.
For assistance or to order, call (800) 531-5782
Cin = Required 1500F electrolytic
Cout= Required 330F electrolytic
L1 = Optional 1H input choke
Pin Function
19
GND
20
Vout
21
Vout
22
Vout
23
Vout
24Vout
25
Vout
26
Remote Sense Vout
27
Sync Out
20 AMP PROGRAMMABLE
NEXT GENERATION “BIG HAMMER”
Series
Revised 4/4/2000
ADV
ANCED
INFORMA
TION
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends
C
IN
+
C
OUT
+
LOAD
V
IN
VID0
VID1
VID2
VID3
VID4
V
OUT
GND
SYNC OUT
STBY*
L1
1H
REMOTE SENSE ( )
REMOTE SENSE (+)
PROGRAMMING PINS
PT7709
64
32
1
26
20-25
12
5
13-19
27
7-11
Vo
Vin
GND
SNS(+)
SNS(-)
Synch
Out
STBY
VID4 - VID0
Specifications
Characteristics
PT7709 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(1)
—20
A
Ta = +25°C, natural convection
0.1(1)
—20
A
Input Voltage Range
Vin
0.1A
≤ Io ≤ 20A
4.5
—
5.5
V
Output Voltage Tolerance
Vo
Vin = +5V, Io = 20A
Vo-0.03
—
Vo+0.03
V
0°C
≤ Ta ≤ +65°C
Line Regulation
Regline
4.5V
≤ Vin ≤ 5.5V, Io = 20A
—
±10
—
mV
Load Regulation
Regload
Vin = +5V, 0.1 ≤ Io ≤ 20A
—
±10
—
mV
Vo Ripple/Noise
Vn
Vin = +5V, Io = 20A
—
50
—
mV
Transient Response
ttr
Io step between 10A and 20A
—
50
—
Sec
with Cout = 330F
Vos
Vo over/undershoot
—
100
—
mV
Efficiency
η
Vin = +5V, Io = 10A
Vo = 3.3V
—
92
—
%
Vo = 2.5V
—
90
—
%
Vo = 1.8V
—
87
—
%
Vin = +5V, Io = 20A
Vo = 3.3V
—
90
—
%
Vo = 2.5V
—
87
—
%
Vo = 1.8V
—
82
—
%
Switching Frequency
o
4.5V
≤ Vin ≤ 5.5V
300
350
400
kHz
0.1A
≤ Io ≤ 20A
Absolute Maximum
Ta
Over Vin and Io Ranges
TBD
—
+85(2)
°C
Operating Temperature Range
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
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) See Safe Operating Area curves or contact the factory for the appropriate derating.
Output Capacitors: The PT7709 series requires a minimum ouput capacitance of 330F for proper operation.
Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 20ADC with a typical value of 1H. 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PT7709C | 功能描述:开关变换器、稳压器与控制器 20A 5Vin Next Gen Programmable 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 |
| PT7709N | 功能描述:DC/DC转换器 20A 5Vin Next Gen Programmable 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: |
| PT7711 | 制造商:TI 制造商全称:Texas Instruments 功能描述:20-A Programmable Integrated Switching Regulator |
| PT7711A | 功能描述:DC/DC转换器 2 A 5V Input Wide- Output Adj Plug-in 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: |
| PT7711C | 功能描述:DC/DC转换器 Programmable 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: |
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