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LT3640IFE#PBF: 产品描述IC REG BCK ADJ 1.1A/1.3A 28TSSOP; 产品类别电源/电源管理电源电路; 文件大小310KB，共4页; 制造商Linear ( ADI ); 官网地址http://www.analog.com/cn/index.html; 标准

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LT3640IFE#PBF概述

IC REG BCK ADJ 1.1A/1.3A 28TSSOP

LT3640IFE#PBF规格参数

参数名称	属性值
Brand Name	Linear Technology
是否Rohs认证	符合
零件包装代码	TSSOP
包装说明	HTSSOP, TSSOP28,.25
针数	28
制造商包装代码	FE
Reach Compliance Code	compliant
ECCN代码	EAR99
Is Samacsys	N
其他特性	PFM CONTROL TECHNIQUE ALSO POSSIBLE
模拟集成电路 - 其他类型	DUAL SWITCHING CONTROLLER
控制模式	CURRENT-MODE
控制技术	PULSE WIDTH MODULATION
最大输入电压	30 V
最小输入电压	5 V
标称输入电压	12 V
JESD-30 代码	R-PDSO-G28
JESD-609代码	e3
长度	9.7 mm
湿度敏感等级	1
功能数量	1
端子数量	28
最高工作温度	125 °C
最低工作温度	-40 °C
最大输出电流	3.4 A
封装主体材料	PLASTIC/EPOXY
封装代码	HTSSOP
封装等效代码	TSSOP28,.25
封装形状	RECTANGULAR
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260
认证状态	Not Qualified
座面最大高度	1.2 mm
表面贴装	YES
切换器配置	PHASE-SHIFT
最大切换频率	2350 kHz
技术	BIPOLAR
温度等级	AUTOMOTIVE
端子面层	Matte Tin (Sn)
端子形式	GULL WING
端子节距	0.65 mm
端子位置	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED
宽度	4.4 mm
Base Number Matches	1

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DEMO CIRCUIT 1359

QUICK START

LT3640

GUIDE

LT3640

Dual Monolithic Buck Regulator with Power-

On Reset and Watchdog Timer

DESCRIPTION

Demonstration circuit 1359 is a Dual Monolithic Buck

Regulator with Power-On Reset and Watchdog Timer

featuring the LT3640. The board operates from inputs up

to 35V and withstands transients up to 55V. The outputs

are 3.3V, 0.8A and 1.2V, 1A. At light loads, both regula-

tors operate in low ripple Burst Mode® to maintain high

efficiency and low output ripple. Users can populate R13

on the EN/UVLO pin to provide a programmable under

voltage lockout. Both channels have cycle-by-cycle cur-

rent limit, providing protection against shorted outputs.

The power-on reset and watchdog timer periods are in-

dependently adjustable using external capacitors. Tight

accuracy specifications and glitch immunity ensure reli-

able operation of the circuit. Watchdog can be enabled or

disabled by JP1.

The circuit can be synchronized to an external clock con-

nected to the SYNC terminal. If the SYNC function is

used, the Rt resistor (R9) should be chosen to set the

LT3640 internal switching frequency at least 20% below

the lowest synchronization input frequency.

The LT3640 datasheet gives complete descriptions of the

part, operation and application information. The data-

sheet must be read in conjunction with this quick start

guide for working on or modifying the demo circuit

1359.

Design files for this circuit board are available. Call

the LTC factory.

, LTC, LTM, LT are trademarks of Linear Technology Corporation. Other product names

may be trademarks of the companies that manufacture the products.

PERFORMANCE SUMMARY

Specifications are at TA = 25°C

SYMBOL

OUT1

OUT2

OUT1

OUT2

WDU

WDL

RST

PARAMETER

Input Supply Range

Output Voltage 1

Output Voltage 2

Output Current 1

Output Current 2

No Load Quiescent Current

Switching Frequency

Watchdog Upper Boundary Period

Watchdog Lower Boundary Period

Programmed Reset Period

CONDITIONS

OUT1

= 3.3V, I

OUT1

= 0.8A

OUT2

= 1.2V, I

OUT2

= 1A

= 12V, I

OUT1

= 0.8A

= 12V, I

OUT2

= 1A

MIN

3.20

1.16

3.30

1.20

TYP

MAX

3.40

1.24

0.8

UNITS

MHz

= 12V, V

OUT1

= 3.3V, V

OUT2

= 1.2V, No

Load

1.75

C7 = 1500pF

C8 = 1500pF

0.33

55.5

3.5

55.5

2.35

LT3640IFE#PBF相似产品对比

	LT3640IFE#PBF	DC1359A	LT3640IFE#TRPBF	LT3640IUFD#PBF	LT3640EFE#TRPBF	LT3640EUFD#PBF	LT3640EUFD#TRPBF	LT3640IUFD#TRPBF	LT3640EFE#PBF
描述	IC REG BCK ADJ 1.1A/1.3A 28TSSOP	board eval for lt3640efe	IC REG BCK ADJ 1.1A/1.3A 28TSSOP	IC REG BUCK ADJ 1.1A/1.3A 28QFN	IC REG BCK ADJ 1.1A/1.3A 28TSSOP	IC REG BUCK ADJ 1.1A/1.3A 28QFN	IC REG BUCK ADJ 1.1A/1.3A 28QFN	IC REG BUCK ADJ 1.1A/1.3A 28QFN	IC REG BCK ADJ 1.1A/1.3A 28TSSOP
Brand Name	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
是否Rohs认证	符合	-	符合	符合	符合	符合	符合	符合	符合
零件包装代码	TSSOP	-	TSSOP	QFN	TSSOP	QFN	QFN	QFN	TSSOP
包装说明	HTSSOP, TSSOP28,.25	-	HTSSOP, TSSOP28,.25	HVQCCN, LCC28,.16X.2,20	HTSSOP, TSSOP28,.25	HVQCCN, LCC28,.16X.2,20	HVQCCN, LCC28,.16X.2,20	HVQCCN, LCC28,.16X.2,20	HTSSOP, TSSOP28,.25
针数	28	-	28	28	28	28	28	28	28
制造商包装代码	FE	-	FE	UFD	FE	UFD	UFD	UFD	FE
Reach Compliance Code	compliant	-	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN代码	EAR99	-	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
其他特性	PFM CONTROL TECHNIQUE ALSO POSSIBLE	-	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE	PFM CONTROL TECHNIQUE ALSO POSSIBLE
模拟集成电路 - 其他类型	DUAL SWITCHING CONTROLLER	-	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
控制模式	CURRENT-MODE	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
控制技术	PULSE WIDTH MODULATION	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
最大输入电压	30 V	-	30 V	30 V	30 V	30 V	30 V	30 V	30 V
最小输入电压	5 V	-	5 V	5 V	5 V	5 V	5 V	5 V	5 V
标称输入电压	12 V	-	12 V	12 V	12 V	12 V	12 V	12 V	12 V
JESD-30 代码	R-PDSO-G28	-	R-PDSO-G28	R-PQCC-N28	R-PDSO-G28	R-PQCC-N28	R-PQCC-N28	R-PQCC-N28	R-PDSO-G28
JESD-609代码	e3	-	e3	e3	e3	e3	e3	e3	e3
长度	9.7 mm	-	9.7 mm	5 mm	9.7 mm	5 mm	5 mm	5 mm	9.7 mm
湿度敏感等级	1	-	1	1	1	1	1	1	1
功能数量	1	-	1	1	1	1	1	1	1
端子数量	28	-	28	28	28	28	28	28	28
最高工作温度	125 °C	-	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C
最大输出电流	3.4 A	-	3.4 A	3.4 A	3.4 A	3.4 A	3.4 A	3.4 A	3.4 A
封装主体材料	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	HTSSOP	-	HTSSOP	HVQCCN	HTSSOP	HVQCCN	HVQCCN	HVQCCN	HTSSOP
封装等效代码	TSSOP28,.25	-	TSSOP28,.25	LCC28,.16X.2,20	TSSOP28,.25	LCC28,.16X.2,20	LCC28,.16X.2,20	LCC28,.16X.2,20	TSSOP28,.25
封装形状	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260	-	260	260	260	260	260	260	260
认证状态	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	1.2 mm	-	1.2 mm	0.8 mm	1.2 mm	0.8 mm	0.8 mm	0.8 mm	1.2 mm
表面贴装	YES	-	YES	YES	YES	YES	YES	YES	YES
切换器配置	PHASE-SHIFT	-	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT
最大切换频率	2350 kHz	-	2350 kHz	2350 kHz	2350 kHz	2350 kHz	2350 kHz	2350 kHz	2350 kHz
技术	BIPOLAR	-	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR	BIPOLAR
温度等级	AUTOMOTIVE	-	AUTOMOTIVE	AUTOMOTIVE	OTHER	OTHER	OTHER	AUTOMOTIVE	OTHER
端子面层	Matte Tin (Sn)	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
端子形式	GULL WING	-	GULL WING	NO LEAD	GULL WING	NO LEAD	NO LEAD	NO LEAD	GULL WING
端子节距	0.65 mm	-	0.65 mm	0.5 mm	0.65 mm	0.5 mm	0.5 mm	0.5 mm	0.65 mm
端子位置	DUAL	-	DUAL	QUAD	DUAL	QUAD	QUAD	QUAD	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
宽度	4.4 mm	-	4.4 mm	4 mm	4.4 mm	4 mm	4 mm	4 mm	4.4 mm
厂商名称	-	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )

LT3640IFE#PBF

LT3640IFE#PBF概述

LT3640IFE#PBF规格参数

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LT3640IFE#PBF相似产品对比

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