SC4217 데이터 시트보기 (PDF) - Semtech Corporation

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SC4217

Very Low Input /Very Low Dropout 3 Amp Regulator With Enable

Semtech Corporation 

SC4217

Electrical Characteristics (continued)

Parameter

ADJ

Reference Voltage(1)

Adjust Pin Current(4)

Adjust Pin Threshold(5)

EN

Enable Pin Current

Enable Pin Theshold

Over Temperature Protection

High Trip Level

Hysteresis

Symbol

VREF

IADJ

VTH(ADJ)

IEN

VIH

VIL

THI

THYST

Conditions

VIN = 3.3V, VADJ = VOUT, IO = 10mA

VADJ = VREF

VEN = 0V, VIN = 3.3V

VIN = 3.3V

VIN = 3.3V

Min Typ Max Units

1.227

1.252

1.24

V

1.215

1.265

80

200

nA

0.05 0.16 0.40

V

1.5

10

µA

1.6

V

0.4

160

°C

10

Notes:

) Low duty cycle pulse testing with Kelvin connections required.

2) Defined as the input to output differential at which the output voltage drops to 1.5% below the value measured at a differential of 0.8V.

3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this requirement. Adjustable versions only.

4) Guaranteed by design.

5) When VADJ exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the error amplifier and connects VADJ instead.



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