LTC3542IDC#TRMPBF,LTC3542IDC#TRMPBF pdf中文资料,LTC3542IDC#TRMPBF引脚图,LTC3542IDC#TRMPBF电路-Datasheet-电子工程世界

器件参数

参数名称

属性值

Brand Name

Linear Technology

是否Rohs认证

符合

厂商名称

Linear ( ADI )

零件包装代码

DFN

包装说明

HVSON,

针数

制造商包装代码

DC6

Reach Compliance Code

compliant

ECCN代码

EAR99

模拟集成电路 - 其他类型

SWITCHING REGULATOR

控制模式

CURRENT-MODE

最大输入电压

5.5 V

最小输入电压

2.5 V

标称输入电压

3.6 V

JESD-30 代码

S-PDSO-N6

JESD-609代码

长度

2 mm

湿度敏感等级

功能数量

端子数量

最高工作温度

125 °C

最低工作温度

-40 °C

封装主体材料

PLASTIC/EPOXY

封装代码

HVSON

封装形状

SQUARE

封装形式

SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

峰值回流温度（摄氏度）

260

认证状态

Not Qualified

座面最大高度

0.8 mm

表面贴装

YES

切换器配置

BUCK

最大切换频率

2700 kHz

温度等级

AUTOMOTIVE

端子面层

Matte Tin (Sn)

端子形式

NO LEAD

端子节距

0.5 mm

端子位置

DUAL

处于峰值回流温度下的最长时间

宽度

2 mm

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 993

500MA, 2.25 MHZ SYNCHRONOUS STEP-DOWN REGULATOR

LTC3542

DESCRIPTION

Demonstration circuit 993A is a step-down converter,

using the LTC3542 monolithic synchronous buck regula-

tor. The DC993A has an input voltage range of 2.5V to

5.5V, and is capable of delivering up to 500 mA of output

current in a small 2x2 mm DFN package. The output

voltage of the DC993A can be set as low as 0.6V, the

reference voltage of the LTC3542. At low load currents,

the DC993A can operate in either noise sensitive applica-

tions, due to the capability of the LTC3542 to operate in

pulse-skipping mode, or in high efficiency applications,

because the LTC3542 can also operate in Burst Mode.

Of course, in continuous mode, or large load current

applications, the DC993A is a high efficiency circuit -

over 90% in some cases. The DC993A consumes only

27 uA during sleep mode operation, and during shut-

down, it consumes at less than 1 uA. Because of the

high switching frequency of the LTC3542 – nominal 2.25

MHz - the DC993A uses low profile surface mount com-

ponents. These features, plus the LTC3542 coming in a

either a tiny 2x2 mm 6-Lead DFN package or a small 6-

Lead SOT package, make the DC993A an ideal circuit for

use in battery-powered, hand-held applications.

Gerber

files for this circuit are available. Call the LTC Fac-

tory.

Table 1. Performance Summary (TA = 25°C)

PARAMETER

Minimum Input Voltage

Maximum Input Voltage

Run/Shutdown

GND = Shutdown

VIN = Run

1.2V ±4% (1.152V – 1.248V)

Output Voltage VOUT

VIN = 2.5V to 5.5V, IOUT = 0A to 500 mA

1.5V ±4% (1.44V - 1.56V)

1.8V ±4% (1.728V – 1.872V)

Typical Output Ripple VOUT

Output Regulation

Nominal Switching Frequency

Operation Modes

Burst Mode - VIN = 3.6V, VOUT = 1.8V

Pulse-Skip - VIN = 3.6V, VOUT = 1.8V

VIN = 5V, IOUT = 500 mA (20 MHz BW)

Line

Load

< 20mVP–P

±1%

2.25 MHz

~60 mA ± 10 mA

CONDITIONS

VALUE

2.5V

5.5V

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 993

500MA, 2.25 MHZ SYNCHRONOUS STEP-DOWN REGULATOR

QUICK START PROCEDURE

Demonstration Circuit 993 is easy to set up to evalu-

ate the performance of the LTC3542. For proper

measurement equipment configuration, set up the

circuit according to the diagram in

Figure 1.

Before

proceeding to test, insert shunts into the OFF position

of header JP3, which connects the RUN pin to ground

(GND), and thus, shuts down the circuit, and the 1.2V

output voltage header – JP4.

When measuring the input or output voltage ripple,

care must be taken to avoid a long ground lead on the

oscilloscope probe. Measure the input or output volt-

age ripple by touching the probe tip directly across

the Vin or Vout and GND terminals. See

Figure 2

for

proper scope probe measurement technique.

With the DC993 set up according to the proper meas-

urement and equipment in

Figure 1,

apply 3.3V at Vin

(Do not hot-plug Vin or increase Vin over the rated

maximum supply voltage of 5.5V, or the part may be

damaged.). Measure Vout; it should read 0V. If de-

sired, one can measure the shutdown supply current

at this point. The supply current will be approxi-

mately 1 uA, or less, in shutdown.

Turn on the circuit by inserting the shunt in header

JP3 into the ON position. The output voltage should

be regulating. Measure Vout - it should measure

1.2V +/- 2% (1.176V to 1.224V).

Vary the input voltage from 2.5V to 5.5V and adjust

the load current from 0 to 500 mA. Vout should read

between 1.2V +/- 4% (1.152V to 1.248V).

Measure the output ripple voltage at any output cur-

rent level; it usually will measure less than 30 mVAC.

Observe the voltage waveform at the switch node.

Verify the switching frequency is between 1.8 MHz

and 2.7 MHz (T = 0.555 us and 0.37 us), and that the

switch node waveform is rectangular in shape.

Insert header JP3 shunt into the OFF position and move

the 1.2V Vout shunt into any of the two remaining output

voltage option headers: 1.5V or 1.8V. Just as in the

1.2Vout test, the output voltage should read Vout +/- 2%

tolerance under static line and load conditions, and +/-

1% tolerance under dynamic line and load conditions

(+/- 2% total).

When finished, turn off the circuit by inserting the

shunt in header JP3 into the OFF position (connecting

the RUN pin to ground).

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 993

500MA, 2.25 MHZ SYNCHRONOUS STEP-DOWN REGULATOR

Demonstration circuit 993 is a step-down converter based on the LTC3542 monolithic synchronous buck regulator.

The DC993 is easy to set up and evaluate the performance of the LTC3542. Refer to Figure 1 for proper equipment

set-up

Figure 1. Proper Equipment Measurement Set-Up

Figure 2. Measuring Input or Output Ripple

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 993

500MA, 2.25 MHZ SYNCHRONOUS STEP-DOWN REGULATOR

参数对比

与LTC3542IDC#TRMPBF相近的元器件有：LTC3542EDC#TRPBF、LTC3542ES6#TRPBF、LTC3542IDC#TRPBF、LTC3542IS6#TRPBF、DC993A、LTC3542EDC#TRMPBF、LTC3542ES6#TRMPBF、LTC3542IS6#TRMPBF、LTC3542ES6#PBF。描述及对比如下：

型号	LTC3542IDC#TRMPBF	LTC3542EDC#TRPBF	LTC3542ES6#TRPBF	LTC3542IDC#TRPBF	LTC3542IS6#TRPBF	DC993A	LTC3542EDC#TRMPBF	LTC3542ES6#TRMPBF	LTC3542IS6#TRMPBF	LTC3542ES6#PBF
描述	IC REG BUCK ADJ 0.5A SYNC 6DFN	IC reg buck sync adj 0.5A 6dfn	IC reg buck sync adj tsot23-6	IC reg buck sync adj 0.5A 6dfn	IC reg buck sync adj tsot23-6	eval board buck reg ltc3542	IC REG BUCK ADJ 0.5A SYNC 6DFN	IC REG BUCK ADJ 0.5A SYNC TSOT23	IC REG BUCK ADJ 0.5A SYNC TSOT23	可输出电流：500mA 开关工作频率：2.25MHz 输出类型：Adjustable 输出电压的路数：1 功能类型：Step-Down 输出配置：Positive
Brand Name	Linear Technology	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	符合
厂商名称	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
零件包装代码	DFN	DFN	SOT	DFN	SOT	-	DFN	SOT	SOT	SOT
包装说明	HVSON,	HVSON, SOLCC6,.08,20	VSSOP, TSOP6,.11,37	HVSON, SOLCC6,.08,20	VSSOP, TSOP6,.11,37	-	HVSON, SOLCC6,.08,20	VSSOP,	VSSOP,	VSSOP, TSOP6,.11,37
针数	6	6	6	6	6	-	6	6	6	6
制造商包装代码	DC6	DC6	S6	DC6	S6	-	DC6	S6	S6	S6
Reach Compliance Code	compliant	compli	compli	compli	compli	-	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	-	EAR99	EAR99	EAR99	EAR99
模拟集成电路 - 其他类型	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	-	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
控制模式	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
最大输入电压	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	-	5.5 V	5.5 V	5.5 V	5.5 V
最小输入电压	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	-	2.5 V	2.5 V	2.5 V	2.5 V
标称输入电压	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	-	3.6 V	3.6 V	3.6 V	3.6 V
JESD-30 代码	S-PDSO-N6	S-PDSO-N6	R-PDSO-G6	S-PDSO-N6	R-PDSO-G6	-	S-PDSO-N6	R-PDSO-G6	R-PDSO-G6	R-PDSO-G6
JESD-609代码	e3	e3	e3	e3	e3	-	e3	e3	e3	e3
长度	2 mm	2 mm	2.9 mm	2 mm	2.9 mm	-	2 mm	2.9 mm	2.9 mm	2.9 mm
湿度敏感等级	1	1	1	1	1	-	1	1	1	1
功能数量	1	1	1	1	1	-	1	1	1	1
端子数量	6	6	6	6	6	-	6	6	6	6
最高工作温度	125 °C	85 °C	85 °C	125 °C	125 °C	-	85 °C	85 °C	125 °C	85 °C
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	HVSON	HVSON	VSSOP	HVSON	VSSOP	-	HVSON	VSSOP	VSSOP	VSSOP
封装形状	SQUARE	SQUARE	RECTANGULAR	SQUARE	RECTANGULAR	-	SQUARE	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）	260	260	260	260	260	-	260	250	260	260
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	0.8 mm	0.8 mm	1 mm	0.8 mm	1 mm	-	0.8 mm	1 mm	1 mm	1 mm
表面贴装	YES	YES	YES	YES	YES	-	YES	YES	YES	YES
切换器配置	BUCK	BUCK	BUCK	BUCK	BUCK	-	BUCK	BUCK	BUCK	BUCK
最大切换频率	2700 kHz	2700 kHz	2700 kHz	2700 kHz	2700 kHz	-	2700 kHz	2700 kHz	2700 kHz	2700 kHz
温度等级	AUTOMOTIVE	OTHER	OTHER	AUTOMOTIVE	AUTOMOTIVE	-	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)	Matte Tin (Sn)
端子形式	NO LEAD	NO LEAD	GULL WING	NO LEAD	GULL WING	-	NO LEAD	GULL WING	GULL WING	GULL WING
端子节距	0.5 mm	0.5 mm	0.95 mm	0.5 mm	0.95 mm	-	0.5 mm	0.95 mm	0.95 mm	0.95 mm
端子位置	DUAL	DUAL	DUAL	DUAL	DUAL	-	DUAL	DUAL	DUAL	DUAL
处于峰值回流温度下的最长时间	30	30	30	30	30	-	30	NOT SPECIFIED	30	30
宽度	2 mm	2 mm	1.625 mm	2 mm	1.625 mm	-	2 mm	1.625 mm	1.625 mm	1.625 mm
最大输出电流	-	0.5 A	0.5 A	0.5 A	0.5 A	-	0.5 A	0.5 A	-	0.5 A
封装等效代码	-	SOLCC6,.08,20	TSOP6,.11,37	SOLCC6,.08,20	TSOP6,.11,37	-	SOLCC6,.08,20	-	-	TSOP6,.11,37
技术	-	CMOS	CMOS	CMOS	CMOS	-	CMOS	-	-	CMOS