SC4502 데이터 시트보기 (PDF) - Semtech Corporation

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SC4502

1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start

Semtech Corporation 

SC4502/SC4502H

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

VIN

SW Voltage

VSW

SW Voltage (SC4502H)

VSW

FB Voltages

VFB

SHDN Voltage

VSHDN

Operating Temperature Range

TA

Thermal Resistance Junction to Ambient (MLPD-10)

θJA

Maximum Junction Temperature

TJ

Storage Temperature Range

TSTG

Lead Temperature (Soldering)10 sec

TLEAD

ESD Rating (Human Body Model)

ESD

EElleeccttrriiccaall CChhaarraacctteerriissttiiccss

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

Parameter

Test Conditions

Minimum Operating Voltage

-0.3 to 16

-0.3 to 32

-0.3 to 40

-0.3 to 2.5

-0.3 to VIN + 1

-40 to +85

40

160

-65 to +150

260

2000

V

V

V

V

V

°C

°C/W

°C

°C

°C

V

Min

Typ

Max

Unit

1.3

1.4

V

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

Switch Saturation Voltage (SC4502H)

 2005 Semtech Corp.

ISW = 1.3A

ISW = 1.3A

2

1.224

1.217

1.3

85

1.4

1.242

0.01

40

60

49

5

5

1.1

10

1.5

90

2

210

250

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

340

mV

390

mV

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