Datasheet > PT7709

PT7709

更新时间： 2024-02-29 10:02:19

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德州仪器 - TI		/
页数	文件大小	规格书
4页	124K
描述
20 Amp Programmable Next Generation Big Hammer

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PT7709 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	MODULE
包装说明：	, SIP27	针数：	27
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	1 week
风险等级：	5.72	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	VOLTAGE-MODE	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-MSMA-T27	功能数量：	1
端子数量：	27	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流：	20 A
封装主体材料：	METAL	封装等效代码：	SIP27
封装形状：	RECTANGULAR	封装形式：	MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
子类别：	Switching Regulator or Controllers	表面贴装：	NO
切换器配置：	SINGLE	最大切换频率：	400 kHz
技术：	HYBRID	温度等级：	INDUSTRIAL
端子形式：	THROUGH-HOLE	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

PT7709 数据手册

PT7709—5V

20 Amp Programmable

Next Generation “Big Hammer”

SLTS084

(Revised 6/30/2000)

Description

The PT7709 niesxt a generation

“Big Hammer”h,igh-performance

Integrated Switching Regulator (ISR),

mable from 1.3V to 3.5V with

which is made available in Power

input, which cisompatible with the

voltage µPs, and bus drivers.

The PT770o9utput is program-

5-bit

Trends’ aluminum27-pin SIP acpk-

age.

popular PT7705 with 20A of output

Intel PentiumProcessor. differential

remote sensealsois provided to com-

pensate for voltage dtwroepen bethe

ISR and load.

The PT7709 improves on th

current and short circuit protection.

The PT7709 is suitaebxleist- for

ing 5V system designresquirtehat

power fothre latest high-speed, low-

Only 30µ3F of output capacitance

are required for proper operation.

Pin-Out Information

Pin Function

Standard Application

Pin Function

10 V_in

11 V_in

12 Remote Sense Gnd

13 GND

14GND

VID0

VID1

VID2

19 GND

20 V_out

21 V_out

22 V_out

23 V_out

PROGRAMMING PINS

VID0

REMOTE SENSE (+)

VID1

VID2

VID3

VID4

(4)

4VID3

SNS(+)

VID4

VID0

V_{O U T}

STBY* - Stand-by

7-11

20-25

Vin

V_IN

PT7709

VID4

V_in

24V

out

15 GND

16 GND

17 GND

18 GND

Synch

Out

STBY

GND

13-19

SNS(-)

25 V_out

LOAD

C_IN

C_{O U T}

SYNC OUT

GND

V_in

26 Remote Sense

out

GND

)

27 Sync Out

REMOTE SENSE

(

STBY*

For STBY* pin:

open = output enabled

ground = output disabled.

= Required 1500µF electrolytic

= Required 330µF electrolytic

out

L1 = Optional 1µH input choke

Specifications

PT7709 SERIES

Typ

Characteristics

(T_a= 25°C unless noted)

Symbols

Conditions

Min

Max

Units

(1)

0.1⁽¹⁾

Output Current

I_o

T_a= +60°C, 200 LFM, pkg N

T_a= +25°C, natural convection

0.1

—

Input Voltage Range

V_in

0.1A ≤ I_o≤ 20A

4.5

—

5.5

Output Voltage Tolerance

∆V_o

V_in= +5V, I_o= 20A

V^o-0.03

—

Vo+0.03

0°C ≤ T_a≤ +65°C

Line Regulation

Load Regulation

V_oRipple/Noise

Reg_line

Reg_load

V_n

4.5V ≤ V_in≤ 5.5V, I_o= 20A

V_in= +5V, 0.1 ≤ I_o≤ 20A

V_in= +5V, I_o= 20A

—

Transient Response

with C_out= 330µF

t_tr

I_ostep between 10A and 20A

V_oover/undershoot

—

µSec

V_os

100

Efficiency

V_in= +5V, I_o= 10A

V_o= 3.3V

V_o= 2.5V

V_o= 1.8V

—

V_in= +5V, I_o= 20A

V_o= 3.3V

V_o= 2.5V

V_o= 1.8V

—

Switching Frequency

Absolute Maximum

ƒ_o

4.5V ≤ V_in≤ 5.5V

0.1A ≤ I_o≤ 20A

300

350

—

400

kHz

°C

(2)

T_a

Over V_{in and}I_oRanges

–40

+85 ⁽³⁾

Operating Temperature Range

Storage Temperature

Mechanical Shock

T_s

—

–40

—

+125

°C

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,

20-2000 Hz, Soldered in a PC board

G’s

Weight

—

Vertical/Horizontal

31/41

grams

Notes: (1) ISR-will operate down to no load with reduced specifications.

(2) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.

(3) See Safe Operating Area curves or contact the factory for the appropriate derating.

(4) If the Remote Sense Ground is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy.

External Capacitors: The PT7709 requires a minimum output capacitance of 330µF for proper operation. The PT7709 also requires an input capacitance of 1500µF,

which must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required. For more

information refer to the application note regarding capacitor selection for this product.

Input Filter: An input filter inductor is optional for most applications. The inductor must be sized to handle 20ADC with a typical value of 1µH.

For technical support and more information, see inside back cover or visit www.ti.com/powertrends

12 3 4

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