SC1453ISK-1.5TR(2008) Ver la hoja de datos (PDF) - Semtech Corporation

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SC1453ISK-1.5TR
(Rev.:2008)

150mA Ultra Low Dropout Regulator with Low Noise Bypass

Semtech Corporation 

SC1453

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: VIN = VOUT + 1V, VEN = VIN, IOUT = 100µA, CIN = COUT = 1µF, TA = 25°C. Values in bold apply over full operating ambient temperature range.

Parameter

Symbol

Conditions

Min Typ Max Units

OUT (Cont.)

Current Limit

ILIM

Dropout Voltage(1)(3)

VD

IOUT = 1mA

IOUT = 50mA

400

1

50

mA

mV

65 mV

75

IOUT = 100mA

100 125 mV

155

IOUT = 150mA

150 190 mV

230

Output Voltage Noise,

en

COUT = 1µF

Output Voltage Noise,

en

COUT = 100µF

Power Supply Rejection Ratio

BYP

PSRR

10Hz to 100kHz, IOUT = 1mA

CBYP = 10nF, VOUT = 1.5V

10Hz to 100kHz, IOUT = 1mA

CBYP = 10nF, VOUT = 3.3V

10Hz to 100kHz, IOUT = 1mA

CBYP = 10nF, VOUT = 1.5V

10Hz to 100kHz, IOUT = 1mA

CBYP = 10nF, VOUT = 3.3V

f = 120Hz, CBYP = 10nF

26

µVRMS

54

13

µVRMS

29

61

dB

Start-up Rise Time

tr

EN

CBYP = 10nF

1.3

ms

Enable Input Threshold

VIH

VIL

Enable Input Bias Current (4)

IEN

Over Temperature Protection

2.25V ≤ VIN ≤ 6.5V

2.25V ≤ VIN ≤ 6.5V

0V ≤ VEN ≤ VIN

1.6

V

0.4

-0.5 0 +0.5 µA

High Trip Level

Hysteresis

THI

THYST

150

°C

20

°C

Notes:

(1) Low duty cycle pulse testing with Kelvin connections required.

(2) VIN(MIN) = 2.25V.

(3) Defined as the input to output differential at which the output voltage drops 100mV below the value measured

at a differential of 1V. Not measurable on 1.5V and 1.8V parts due to minimum VIN constraints.

(4) Guaranteed by design.

 2008 Semtech Corp.

3

www.semtech.com

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