SC4501 데이터 시트보기 (PDF) - Semtech Corporation

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SC4501

2Amp, 2MHz Step-Up Switching Regulator with Soft-Start

Semtech Corporation 

SC4501

POWER MANAGEMENT

Absolute Maximum Rating

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified

in the Electrical Characteristics section is not implied.

Parameter

Symbol

Typ

Units

Supply Voltage

SW Voltage

FB Voltages

SHDN Voltage

Operating Temperature Range

Thermal Resistance Junction to Ambient (MSOP-8)

Thermal Resistance Junction to Ambient (MLPD-10)

Maximum Junction Temperature

Storage Temperature Range

Lead Temperature (Soldering)10 sec

ESD Rating (Human Body Model)

VIN

VSW

VFB

VSHDN

TA

θJA

θJA

TJ

TSTG

TLEAD

ESD

-0.3 to 18

-0.3 to 32

-0.3 to 2.5

-0.3 to VIN + 1

-40 to +85

40

40

160

-65 to +150

260

2000

V

V

V

V

°C

°C/W

°C

°C

°C

V

Electrical Characteristics

Unless specified: VIN = 2V, SHDN = 1.5V, ROSC = 7.68kΩ, -40°C < TA = TJ < 85°C

Parameter

Test Conditions

Undervoltage Lockout Threshold

Maximum Operating Voltage

Feedback Voltage

Feedback Voltage Line

Regulation

FB Pin Bias Current

TA = 25°C

-40°C < TA < 85°C

1.5V < VIN < 16V

Error Amplifier Transconductance

Error Amplifier Open-Loop Gain

COMP Source Current

COMP Sink Current

VIN Quiescent Supply Current

VIN Supply Current in Shutdown

Switching Frequency

VFB = 1.1V

VFB = 1.4V

VSHDN = 1.5V, VCOMP = 0 ( Not Switching )

VSHDN = 0

Maximum Duty Cycle

Minimum Duty Cycle

Switch Current Limit

Switch Saturation Voltage

© 2005 Semtech Corp.

I = 2A

SW

2

Min

1.224

1.217

1.3

85

2

Typ

1.3

1.242

0.01

40

60

49

5

5

1.1

10

1.5

90

2.8

220

Max

Unit

1.4

V

16

V

1.260

V

1.267

V

%

80

nA

µΩ−1

dB

µA

µA

1.6

mA

18

µA

1.7

MHz

%

0

%

A

350

mV

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