FEATURES

n

LTC3823

Fast No R

SENSE

TM

Step-Down

Synchronous DC/DC Controller

with Differential Output Sensing,

Tracking and PLL

DESCRIPTION

The LTC

®

3823 is a synchronous step-down switching regu-

lator controller with true remote differential output sensing

and output voltage up/down tracking capability. Its advanced

functions and high accuracy reference are ideal for powering

high performance server, ASIC and computer memory

systems.

The LTC3823 uses a constant on-time, valley current

mode control architecture to deliver very low duty fac-

tors without requiring a sense resistor. The operating

frequency is selected by an external resistor and is com-

pensated for variations in input supply voltage. An internal

phase-locked loop allows the IC to be synchronized to an

external clock.

Fault protection is provided by an overvoltage compara-

tor and input undervoltage lockout. The regulator current

limit is user programmable. A wide supply range allows

voltages as high as 36V to be stepped down to as low as

a 0.6V output. When using remote sense, output voltages

up to 3.3V can be developed, and up to 90% of V

IN

without

remote sense. Power supply sequencing is accomplished

using an external soft-start timing capacitor.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

No R

SENSE

is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners. Protected by U.S. Patents including 5481178, 5847554,

6580258, 6304066, 6476589, 6774611.

Wide V

IN

Range: 4.5V to 36V

±0.67%, 0.6V Reference Voltage

Output Voltage Tracking Capability

True Remote Sensing Differential Ampliﬁer

Sense Resistor Optional

True Current Mode Control

2% to 90% Duty Cycle at 200kHz

t

ON(MIN)

< 100ns

Phase-Locked Loop Frequency Synchronization

Powerful Dual N-Channel MOSFET Driver

Adjustable Cycle-by-Cycle Current Limit

Adjustable Switching Frequency

Programmable Soft-Start

Current Foldback Protection (Disabled at Start-Up)

Output Overvoltage Protection

Micropower Shutdown: 30μA

Power Good Output Voltage Monitor Tracks the

Reference Input Pin

Available in (5mm

×

5mm) 32-Lead QFN and

28-Lead SSOP Narrow Packages

APPLICATIONS

n

Distributed Power Systems

Server Power Supplies

TYPICAL APPLICATION

High Efﬁciency Step-Down Converter

PGOOD

0.01μF

10k

PLLFLTR

PLLIN

0.1μF

TRACK/SS

I

TH

1000pF

10k

SGND

RUN

V

ON

V

RNG

V

DIFFOUT

9.5k

V

FB

3k

LTC3823

INTV

CC

DRV

CC

BG

SENSE

+

SENSE

–

Efﬁciency and Power Loss

vs Load Current

97

10

V

IN

= 5V

V

OUT

= 2.5V

FIGURE 12 CIRCUIT

POWER LOSS (W)

EFFICIENCY

1

10μF

35V

3

V

IN

5V TO 28V

V

OUT

2.5V

10A

I

ON

V

IN

TG

SW

68k

Si4884

1.8μH

0.22μF

96

95

EFFICIENCY (%)

94

93

92

91

90

BOOST

CMDSH-3

+

180μF

4V

2

POWER LOSS

0.1

V

OUT

Si4874

10μF

B340A

89

88

87

0.1

1

LOAD CURRENT (A)

10

3823 TA01b

0.01

PGND

V

OUTSENSE+

V

OUTSENSE–

3823 TA01a

3823fd

1

LTC3823

ABSOLUTE MAXIMUM RATINGS

(Note 1)

Supply Voltages

Input Supply Voltage V

IN

,

V

INSNS

.................................................... –0.3V to 36V

DRV

CC

, (BOOST – SW) ............................–0.3V to 7V

BOOST ................................................... –0.3V to 42V

SENSE

+

, SW Voltage .................................–5V to 36V

TRACK/SS, FCB, Z0, Z1/SS

ENABLE

, Z2,

PLLIN, V

OUTSENSE+

, V

OUTSENSE–

Voltages .................................. –0.3V to (INTV

CC

+ 0.3)V

V

ON

, V

RNG

, PGOOD Voltages .. –0.3V to (INTV

CC

+ 0.3)V

V

DIFFOUT

................................................–0.3V to INTV

CC

RUN, I

ON

.................................................... –0.3V to 12V

PLLFLTR, I

TH

, V

FB

Voltages ...................... –0.3V to 2.7V

INTV

CC

, ZV

CC

Voltages ................................–0.3V to 7V

TG, BG, INTV

CC

Peak Currents ....................................4A

TG, BG, INTV

CC

RMS Currents...............................50mA

Operating Temperature Range .................–40°C to 85°C

Junction Temperature (Note 2) ............................. 125°C

Storage Temperature Range .................. –65°C to 125°C

Lead Temperature (Soldering, 10 sec)

SSOP ................................................................ 300°C

PIN CONFIGURATION

PGOOD

TOP VIEW

FCB

RUN

V

ON

PGOOD

V

RNG

V

FB

I

TH

SGND

I

ON

1

2

3

4

5

6

7

8

9

28 Z0

27 BOOST

26 TG

25 SW

24 SENSE

+

23 SENSE

22 PGND

21 BG

20 INTV

CC

19 Z2

18 Z1/SS

ENABLE

17 ZV

CC

16 V

IN

15 PLLIN

–

TOP VIEW

BOOST

RUN

V

ON

FCB

SW

24 SENSE

+

23 SENSE

–

22 PGND

33

SGND

21 BG

20 DRV

CC

19 INTV

CC

18 Z2

17 Z1/SS

ENABLE

ZV

CC

TG

V

INSNS

Z0

PLLIN

32 31 30 29 28 27 26 25

V

RNG

1

V

FB

2

I

TH

3

SGND 4

I

ON

5

V

DIFFOUT

6

NC 7

V

OUTSENSE+

8

9 10 11 12 13 14 15 16

V

OUTSENSE–

TRACK/SS

PLLFLTR

V

IN

NC

V

DIFFOUT

10

V

OUTSENSE+

11

V

OUTSENSE–

12

TRACK/SS 13

PLLFLTR 14

GN PACKAGE

28-LEAD PLASTIC SSOP NARROW

T

JMAX

= 125°C,

θ

JA

= 80°C/W

UH PACKAGE

32-LEAD (5mm 5mm) PLASTIC QFN

T

JMAX

= 125°C,

θ

JA

= 34°C/W

EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

LTC3823EGN#PBF

LTC3823IGN#PBF

LTC3823EUH#PBF

LTC3823IUH#PBF

TAPE AND REEL

LTC3823EGN#TRPBF

LTC3823IGN#TRPBF

LTC3823EUH#TRPBF

LTC3823IUH#TRPBF

PART MARKING*

LTC3823EGN

LTC3823IGN

3823

PACKAGE DESCRIPTION

28-Lead Plastic SSOP Narrow

32-Lead (5mm

×

5mm) Plastic QFN

32-Lead (5mm

×

5mm) Plastic QFN

TEMPERATURE RANGE

–40°C to 85°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to:

http://www.linear.com/tapeandreel/

3823fd

2

LTC3823

ELECTRICAL CHARACTERISTICS

SYMBOL

I

Q

V

FB

V

FB(LINEREG)

V

FB(LOADREG)

V

RUN

I

SS/TRACK

I

FB

g

m(EA)

V

FCB

I

FCB

t

ON

t

ON(MIN)

t

OFF(MIN)

V

SENSE(MAX)

PARAMETER

Input DC Supply Current

Feedback Voltage Accuracy (Note 3)

Feedback Voltage Line Regulation

Feedback Voltage Load Regulation

RUN Pin On Threshold

Soft-Start Charge Current

Feedback Pin Input Current

Error Ampliﬁer Transconductance

Forced Continuous Threshold

Forced Continuous Pin Current

On-Time

Minimum On-Time

Minimum Off-Time

Maximum Current Sense Threshold

V

RNG

= 1V, V

FB

= 570mV (0°C to 85°C)

V

RNG

= 0V, V

FB

= 570mV (0°C to 85°C)

V

RNG

= INTV

CC

, V

FB

= 570mV (0°C to 85°C)

V

RNG

= 1V, V

FB

= 630mV

V

RNG

= 0V, V

FB

= 630mV

V

RNG

= INTV

CC

, V

FB

= 630mV

8

V

IN

Falling

V

IN

Rising

TG High

TG Low

BG High

BG Low

C

LOAD

= 3300pF

C

LOAD

= 3300pF

C

LOAD

= 3300pF

C

LOAD

= 3300pF

6V < V

IN

< 36V

I

CC

= 0mA to 20mA

l

The

l

denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at T

A

= 25°C. V

IN

= 15V unless otherwise speciﬁed.

CONDITIONS

Normal Operation

Shutdown Supply Current

I

TH

= 1.2V (0°C to 85°C)

I

TH

= 1.2V

V

IN

= 4.5V to 30V, I

TH

= 1.2V (Note 3)

I

TH

= 0.5V to 1.9V (Note 3)

V

RUN

Rising

V

SS/TRACK

= 0V

I

TH

= 1.2V (Note 3)

V

FCB

= 0V

I

ON

= –60μA, V

ON

= 1.5V

I

ON

= –60μA, V

ON

= 0V

I

ON

= –180μA, V

ON

= 0V

120

50

240

210

80

l

MIN

TYP

1400

30

MAX

2200

50

0.604

0.606

–0.3

1.9

–2.3

100

0.63

–2

290

150

100

400

160

85

320

UNITS

μA

V

%/V

%

V

μA

nA

mS

V

μA

ns

mV

Main Control Loop

0.596

0.594

0.6

0.002

–0.04

1

–1.3

–100

0.57

1.5

–1.7

–20

1.65

0.6

–1

250

115

50

280

140

70

280

– 60

– 30

–120

11

3.1

3.9

1.9

1.2

1.9

0.7

20

V

SENSE(MIN)

Minimum Current Sense Threshold

ΔV

FB(OV)

V

IN(UVLO+)

V

IN(UVLO–)

TG R

UP

TG R

DOWN

BG R

UP

BG R

DOWN

TG t

r

TG t

f

BG t

r

BG t

f

V

INTVCC

ΔV

LDO(LOADREG)

R

PLLIN

I

PLLFLTR

Output Overvoltage Fault Threshold Offset

Undervoltage Lockout

TG Driver Pull-Up On-Resistance

TG Driver Pull-Down On-Resistance

BG Driver Pull-Up On-Resistance

BG Driver Pull-Down On-Resistance

TG Rise Time

TG Fall Time

BG Rise Time

BG Fall Time

Internal V

CC

Voltage

Internal V

CC

Load Regulation

PLLIN Input Resistance

Phase Detector Sink Current

Phase Detector Source Current

f

PLLIN

< f

O

f

PLLIN

> f

O

14

3.4

4.1

2.5

3

1.5

%

V

Ω

ns

Internal V

CC

Regulation

4.75

5

– 0.1

50

–15

15

5.45

±2

V

%

kΩ

μA

Phase-Locked Loop

3823fd

3

LTC3823

ELECTRICAL CHARACTERISTICS

SYMBOL

PGOOD Output

ΔV

FBH

ΔV

FBL

ΔV

FB(HYS)

V

PGL

A

DA

R

IN

V

OS

PSRR

OA

I

CL

V

OUT(MAX)

GBW

T

SD

T

HYST

PGOOD Upper Threshold

PGOOD Lower Threshold

PGOOD Hysteresis

PGOOD Low Voltage

Gain

Input Resistance

Input Offset Voltage

Power Supply Rejection Ratio

Maximum Output Current

Maximum Output Voltage

Gain Bandwidth Product

Shutdown Temperature

Thermal Hysteresis

I

DIFFOUT

= 300μA

I

DIFFOUT

= 1mA

Rising

l

The

l

denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at T

A

= 25°C. V

IN

= 15V unless otherwise speciﬁed.

PARAMETER

CONDITIONS

V

FB

Rising

V

FB

Falling

V

FB

Returning

I

PGOOD

= 5mA

l

MIN

8

–8

TYP

11

–11

1.5

0.15

MAX

14

–14

3

0.4

1.0035

2

UNITS

%

V

V/V

kΩ

mV

dB

mA

V

MHz

°C

Differential Sensing Ampliﬁer

0.9965

1.000

80

Measured at V

OUTSENSE+

Input

V

OUTSENSE+

= V

DIFFOUT

= 1.5V,

I

DIFFOUT

= 1mA

6V < V

IN

< 30V

3.775

90

3

4

3.5

170

15

Thermal Shutdown

Note 1:

Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2:

T

J

is calculated from the ambient temperature T

A

and power

dissipation P

D

according to the following formulas:

LTC3823GN: T

J

= T

A

+ (P

D

• 80°C/W)

LTC3823UH: T

J

= T

A

+ (P

D

• 34°C/W)

Note 3:

The LTC3823 is tested in a feedback loop that servos V

FB

to

achieve a speciﬁed error ampliﬁer output voltage (I

TH

).

Note 4:

The LTC3823E is guaranteed to meet performance speciﬁcations

from 0°C to 85°C. Speciﬁcations over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTC3823I is guaranteed over the full

–40°C to 85°C operating temperature range.

TYPICAL PERFORMANCE CHARACTERISTICS

Current Sense Threshold

vs I

TH

Voltage

300

CURRENT SENSE THRESHOLD (mV)

250

200

ON-TIME (ns)

150

100

50

0

–50

0.5V

1V

0.7V

1000

V

RNG

= 2V

1.4V

10000

On-Time vs I

ON

Current

V

ON

= 0V

800

700

600

500

400

300

200

100

10

0

10 20 30 40 50 60 70 80 90 100

I

ON

CURRENT (μA)

3823 G02

On-Time vs V

ON

Voltage

I

ION

= 60μA

100

–100

0

0.5

1.5

1

I

TH

VOLTAGE (V)

2

2.5

2823 G01

–150

0

0.5

1

1.5 2 2.5 3 3.5

V

ON

VOLTAGE (V)

4

4.5

5

3823 G03

3823fd

4

LTC3823

TYPICAL PERFORMANCE CHARACTERISTICS

On-Time vs Temperature

250

245

240

235

ON-TIME (ns)

230

225

220

215

210

205

200

–50

–25

50

25

0

75

TEMPERATURE (°C)

100

125

MAX CURRENT SENSE THRESHOLD (mV)

I

ION

= 30μA

V

ON

= 0V

300

MAX CURRENT SENSE THRESHOLD (mV)

Maximum Current Sense

Threshold vs V

RNG

Voltage

150

145

140

135

130

125

120

115

110

105

Maximum Current Sense

Threshold vs Temperature

V

RNG

= 1V

250

200

150

100

50

0.5

0.75

1

1.25

1.5

V

RNG

VOLTAGE (V)

1.75

2

100

–50 –25

50

25

0

75

TEMPERATURE (°C)

100

125

3823 G04

3823 G05

3823 G06

Error Ampliﬁer g

m

vs Temperature

1.8

2.5

Input Current vs Input Voltage

60

50

Shutdown Current vs Input Voltage

1.7

g

m

(mS)

SHUTDOWN CURRENT (μA)

INPUT CURRENT (mA)

2.0

40

30

20

10

1.6

1.5

–50 –25

50

25

75

0

TEMPERATURE (°C)

100

125

1.0

0

5

25

10

15

20

INPUT VOLTAGE, V

IN

(V)

30

3823 G08

0

5

25

10

15

20

INPUT VOLTAGE, V

IN

(V)

30

3823 G09

3823 G07

INTV

CC

Load Regulation

0

–0.1

–0.2

–0.3

ΔINTV

CC

(%)

–0.4

–0.5

–0.6

–0.7

–0.8

–0.9

–1.0

0

5

10 15 20 25 30 35 40 45 50

INTV

CC

LOAD CURRENT (mA)

3823 G10

FCB Pin Current vs Temperature

–1.00

–1.05

–1.10

FCB PIN CURRENT (μA)

–1.15

–1.20

–1.25

–1.30

–1.35

–1.40

–1.45

–1.50

–50 –25

50

25

0

75

TEMPERATURE (°C)

100

125

TRACK/SS

AND V

FB

500mV/DIV

V

OUT

2V/DIV

Track Up

FIGURE 12 CIRCUIT

TRACK/SS

V

FB

V

OUT

250ms/DIV

3823 G12

3823 G11

3823fd

5

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	SSOP
包装说明	SSOP, SSOP28,.25
针数	28
制造商包装代码	GN
Reach Compliance Code	compliant
ECCN代码	EAR99
模拟集成电路 - 其他类型	SWITCHING CONTROLLER
控制模式	CURRENT-MODE
最大输入电压	36 V
最小输入电压	4.5 V
标称输入电压	15 V
JESD-30 代码	R-PDSO-G28
JESD-609代码	e3
长度	9.893 mm
湿度敏感等级	1
功能数量	1
端子数量	28
最高工作温度	85 °C
最低工作温度	-40 °C
最大输出电流	4 A
标称输出电压	5 V
封装主体材料	PLASTIC/EPOXY
封装代码	SSOP
封装等效代码	SSOP28,.25
封装形状	RECTANGULAR
封装形式	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）	260
认证状态	Not Qualified
座面最大高度	1.75 mm
表面贴装	YES
切换器配置	PUSH-PULL
最大切换频率	200 kHz
技术	CMOS
温度等级	INDUSTRIAL
端子面层	Matte Tin (Sn)
端子形式	GULL WING
端子节距	0.635 mm
端子位置	DUAL
处于峰值回流温度下的最长时间	30
宽度	3.899 mm

	LTC3823EGN#TRPBF	LTC3823IGN#TRPBF	LTC3823IUH#TRPBF	LTC3823EUH#TRPBF	LTC3823IGN#PBF	LTC3823EGN#PBF	LTC3823IUH#PBF	LTC3823EUH#PBF
描述	IC REG CTRLR BUCK 28SSOP	IC REG CTRLR BUCK 28SSOP	IC REG CTRLR BUCK 32QFN	IC REG CTRLR BUCK 32QFN	IC REG CTRLR BUCK 28SSOP	IC REG CTRLR BUCK 28SSOP	IC REG CTRLR BUCK 32QFN	IC REG CTRLR BUCK 32QFN
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
厂商名称	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
零件包装代码	SSOP	SSOP	QFN	QFN	SSOP	SSOP	QFN	QFN
包装说明	SSOP, SSOP28,.25	SSOP, SSOP28,.25	HVQCCN, LCC32,.2SQ,20	HVQCCN, LCC32,.2SQ,20	SSOP, SSOP28,.25	SSOP, SSOP28,.25	HVQCCN, LCC32,.2SQ,20	HVQCCN, LCC32,.2SQ,20
针数	28	28	32	32	28	28	32	32
制造商包装代码	GN	GN	UH	UH	GN	GN	UH	UH
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
模拟集成电路 - 其他类型	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
控制模式	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
最大输入电压	36 V	36 V	36 V	36 V	36 V	36 V	36 V	36 V
最小输入电压	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
标称输入电压	15 V	15 V	15 V	15 V	15 V	15 V	15 V	15 V
JESD-30 代码	R-PDSO-G28	R-PDSO-G28	S-PQCC-N32	S-PQCC-N32	R-PDSO-G28	R-PDSO-G28	S-PQCC-N32	S-PQCC-N32
JESD-609代码	e3	e3	e3	e3	e3	e3	e3	e3
长度	9.893 mm	9.893 mm	5 mm	5 mm	9.893 mm	9.893 mm	5 mm	5 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	32	32	28	28	32	32
最高工作温度	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
最大输出电流	4 A	4 A	4 A	4 A	4 A	4 A	4 A	4 A
标称输出电压	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V
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	SSOP	SSOP	HVQCCN	HVQCCN	SSOP	SSOP	HVQCCN	HVQCCN
封装等效代码	SSOP28,.25	SSOP28,.25	LCC32,.2SQ,20	LCC32,.2SQ,20	SSOP28,.25	SSOP28,.25	LCC32,.2SQ,20	LCC32,.2SQ,20
封装形状	RECTANGULAR	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR	RECTANGULAR	SQUARE	SQUARE
封装形式	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
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	1.75 mm	1.75 mm	0.8 mm	0.8 mm	1.75 mm	1.75 mm	0.8 mm	0.8 mm
表面贴装	YES	YES	YES	YES	YES	YES	YES	YES
切换器配置	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL
技术	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
温度等级	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
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	NO LEAD	GULL WING	GULL WING	NO LEAD	NO LEAD
端子节距	0.635 mm	0.635 mm	0.5 mm	0.5 mm	0.635 mm	0.635 mm	0.5 mm	0.5 mm
端子位置	DUAL	DUAL	QUAD	QUAD	DUAL	DUAL	QUAD	QUAD
处于峰值回流温度下的最长时间	30	NOT SPECIFIED	NOT SPECIFIED	30	NOT SPECIFIED	30	NOT SPECIFIED	30
宽度	3.899 mm	3.899 mm	5 mm	5 mm	3.899 mm	3.899 mm	5 mm	5 mm

LTC3823EGN#TRPBF

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