SC1563 データシートの表示（PDF） - Semtech Corporation

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SC1563

Very Low Dropout, Low Quiescent 500mA Regulator

Semtech Corporation 

SC1563

POWER MANAGEMENT

Electrical Characteristics

Unless specified: VSHDN = 0V, Adjustable mode (VADJ > VTH(ADJ)): VIN = 2.2V to 5.5V and IOUT = 0A to 500mA,

Fixed mode (VADJ = GND): VIN = (VOUT + 0.7V) to 5.5V and IOUT = 0A to 500mA. Values in bold apply over full operating temperature range.

Parameter

Symbol

Conditions

Min Typ Max

Units

OUT (Cont.)

Dropout Voltage(1)(2)

VD

IOUT = 2mA

1

5

mV

10

IOUT = 100mA

70 100 mV

150

IOUT = 250mA

175 250 mV

350

IOUT = 500mA

350 500 mV

700

Current Limit

ILIM

ADJ

0.5

1.0 A

Reference Voltage(1)

VREF

VIN = 2.2V, VADJ = VOUT, IOUT = 10mA

1.188 1.200 1.212 V

1.176

1.224

Adjust Pin Current(3)

Adjust Pin Threshold(4)

SHDN

IADJ

VTH(ADJ)

VADJ = VREF

65 150 nA

0.10 0.25 0.40 V

Shutdown Pin Current

ISHDN

Shutdown Pin Threshold

VIH

VIL

Over Temperature Protection

VSHDN = 0V, VIN = 3.3V

VIN = 3.3V

VIN = 3.3V

1.5 5.0 µA

1.8

V

0.4

High Trip Level

Hysteresis

THI

THYST

170

°C

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% below the value measured at

a differential of 0.7V for 2.5V ≤ VOUT ≤ 3.4V. Not measurable on outputs less than 2.2V due to minimum VIN con-

straints. See typical characteristics curves.

(3) Guaranteed by design.

(4) 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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