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参数资料
型号： PT7749C
厂商： TEXAS INSTRUMENTS INC
元件分类： 电源模块
英文描述： 1-OUTPUT DC-DC BOOSTER MODULE
封装： HORIZONTAL SMT, SIP-27
文件页数： 1/3页
文件大小： 116K
代理商： PT7749C
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Features
When used with PT7705/7706:
Cin
= Required 1200F electrolytic
Cout = Required 1200F electrolytic
L1
= Optional 1H input choke
When used with PT7707:
Cin
= Required 1200F electrolytic
Cout = Required 330F electrolytic
L1
= Optional 1H input choke
The PT7749 is a high-performance
18 Amp “Current Booster” for the
PT7705/6 Regulators housed in a 27-
pin SIP package.
Multiple PT7749 boosters will oper-
ate in parallel with the PT7705/6
regulators, boosting output current in
increments of 18A . Combinations of a
PT7705/6 and PT7749 current boosters
can easily supply enough power for
virtually any multiple megaprocessor
application.
A PT7749 current booster adds a
parallel output stage driven directly by
the main regulator. As such, the system
runs in perfect sychronization providing
a low noise solution.
The PT7749 only operates in com-
bination with the PT7705/6 regulators
and is not a stand-alone product.
Therefore please refer the appropriate
series data sheet for performance specifi-
cations.
PT7749—5V
18 Amp “Current Booster” for
PT7700 Series
Ordering Information
PT7749
o
Current Boost
Tracks Vout of PT7705/06/07
High Efficiency
Input Voltage Range: 3V to 5.5V
Synchronized with Regulator
27-pin SIP Package
Run up to 4 in Parallel - 90 Amps
Standard Application
(For dimensions and PC Board layout,
see Package Styles 800 and 810.)
Pin-Out Information
Pin Function
1
Do not connect
2
Do not connect
3
Do not connect
4
Do not connect
5
Do not connect
6
Do not connect
7Vin
8Vin
9Vin
10
Vin
11
Vin
12
Do not connect
13
GND
14
GND
Pin Function
15
GND
16
GND
17
GND
18
GND
19
GND
20
Vout
21
Vout
22
Vout
23
Vout
24
Vout
25
Vout
26
Do not connect
27
Master Sync In
PT7749
PT7700
7 - 11
13 - 19
20 - 25
27
GND
V
OUT
12
26
1
REMOTE SENSE (+)
REMOTE SENSE (-)
VID0
VID1
VID2
VID3
PROGRAMMING PINS
2
3
4
STBY*
5
C
IN
+
C
IN
+
C
OUT
+
C
OUT
+
LOAD
7 - 11
20 - 25
13 - 19
27
1H
L1
1H
L1
V
IN
6
VID4
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
N
Horizontal Through-Hole A
Horizontal Surface Mount
C
Output Capacitors: When used with a PT7705or PT7706, the PT7749 requires a minimum ouput capacitance of 1200F. When used with a PT7707, the PT7749
requires a minimum ouput capacitance of 330F for proper operation. Do not use Oscon type capacitors. The maximum allowable output capacitance is 15,000F.
Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 18ADC 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.
SLTS052A
(Revised 6/30/2000)
相关PDF资料
PDF描述
PT7761C 40 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA31
PT7769N 40 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA31
PT7761N 40 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA31
PT7769A 40 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA31
PT7769C 40 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA31
相关代理商/技术参数
参数描述
PT7749N 功能描述:开关变换器、稳压器与控制器 18A Crnt Booster for the PT7700/7770 Ser 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
PT7750 制造商:TI 制造商全称:Texas Instruments 功能描述:15 AMP 24V INPUT “BIG-HAMMER III” PROGRAMMABLE ISR
PT7750A 制造商:TI 制造商全称:Texas Instruments 功能描述:15 AMP 24V INPUT “BIG-HAMMER III” PROGRAMMABLE ISR
PT7750C 制造商:TI 制造商全称:Texas Instruments 功能描述:15 AMP 24V INPUT “BIG-HAMMER III” PROGRAMMABLE ISR
PT7750N 制造商:TI 制造商全称:Texas Instruments 功能描述:15 AMP 24V INPUT “BIG-HAMMER III” PROGRAMMABLE ISR
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