SC1534CMTR 查看數據表（PDF） - Semtech Corporation

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SC1534CMTR

400mA SmartLDO ™

Semtech Corporation 

400mA SmartLDOTM

SC1534

PRELIMINARY - July 26, 2000

ELECTRICAL CHARACTERISTICS

Unless specified, TA = 25°C, VIN = 5V, VAUX = 3.3V, IO = 400mA, CO = 10µF. Values in bold apply over full operating temperature range.

Parameter

Symbol

Test Conditions

MIN TYP MAX Units

Drive Output

Drive Voltage

VDR

4.35V ≤ VIN ≤ 5.5V, IDR = 200µA

3.4 VIN - 0.8

V

3.3

VIN < VTH(LO), IDR = -200µA

35 150 mV

250

Peak Drive Current

Drive High Delay(1)(4)

Drive Low Delay(1)(4)

IDR(PK)

Sinking: VIN = 3.9V, VDR = 1V;

7

Sourcing: VIN = 4.35V, VIN - VDR = 2.5V 6

tDH

CDR = 1.2nF, VIN ramping up, measured

from VIN = VTH(HI) to VDR = 2V

tDL

CDR = 1.2nF, VIN ramping down, measured

from VIN = VTH(LO) to VDR = 2V

mA

0.5 1.0 µs

2.0

0.5 1.0 µs

2.0

NOTES:

(1) Guaranteed by design.

(2) See 5V Detect Thresholds on page 5.

(3) Recommended source impedance for 5V supply: ≤ 0.125Ω. This will ensure that IO x RSOURCE < VHYST, thus

avoiding DR toggling during 5V detect threshold transitions.

(4) See Timing Diagram on page 5.

© 2000 SEMTECH CORP.

4

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