SC4215 데이터 시트보기 (PDF) - Semtech Corporation

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SC4215

Very Low Input / Very Low Dropout 2 Amp Regulator With Enable

Semtech Corporation 

SC4215

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: VEN = VIN. VIN = 1.6V to 5.5V, VO = VIN -0.5V, and IO = 10µA to 2A.

Values in bold apply over the full operating temperature range.

Parameter

Symbol

Test Conditions

Min Typ Max Units

VO (Cont.)

Dropout Voltage(1)(2)

Minimum Load Current(3)

IO

Current Limit

ICL

ADJ

IO = 2A, VIN = VO + 0.5V

IO = 2A, VIN = VO + 0.6V

VIN = VO + 0.5V

300 500 mV

600

1

10

µA

2.2

3

4.5

A

Reference Voltage(1)

VREF

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

0.792 0.8 0.808 V

0.784

0.816

Adjust Pin Current(4)

Adjust Pin Threshold(5)

EN

IADJ

VTH(ADJ)

VADJ = VREF

80

200 nA

0.05 0.16 0.40

V

Enable Pin Current

IEN

Enable Pin Threshold

VIH

VIL

Over Temperature Protection

VEN = 0V, VIN = 3.3V

VIN = 3.3V

VIN = 3.3V

1.5

10

µA

1.6

V

0.4

High Trip level

THI

160

°C

Hysteresis

THYST

10

°C

Notes:

(1) 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.

 2006 Semtech Corp.

3

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