SC4603 Ver la hoja de datos (PDF) - Semtech Corporation

Número de pieza

componentes Descripción

Lista de partido

SC4603

Very Low Input, MHz Operation, High Efficiency Synchronous Buck

Semtech Corporation 

SC4603

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, VCC = 3.3V, RT = 21Kohm, TA = -40°C to 85°C, TA = TJ.

Parameter

Test Conditions

Error Amplifier (Cont.)

VCOMP High

VCOMP Low

Oscillator

ICOMP = -5.5mA

ICOMP = 5.5mA

Initial Accuracy

Voltage Stability

Temperature Coefficient

Synchronization Frequency

TA = 25°C, VSYNC/SLEEP = HIGH

TA = 25°C, VCC = 2.25V to 5.5V

TA = -40°C to 85°C

SYNC Low Threshold

SYNC High Threshold

Ramp Peak to Valley (1)

Ramp Peak Voltage (1)

Ramp Valley Voltage (1)

Sleep, Soft Start, Current Limit

Sleep Threshold

Measured at VSYNC/SLEEP

LOGIC LOW

Measured at VSYNC/SLEEP

LOGIC HIGH

Sleep Input Bias Current (2)

Soft Start Time (1)

Current Limit Threshold (2)

VSYNC/SLEEP = 0V

FSW = 600kHz

Bias Current, TJ = 25°C

Temperature Coefficient

Current Limit Blank Time(1)

N-Channel and P-Channel Driver Outputs

Pull Up Resistance (PDRV) (2)

Pull Down Resistance (PDRV) (2)

Pull Up Resistance (NDRV) (1)

Pull Down Resistance (NDRV) (2)

PDRV Output Rise Time (2)

PDRV Output Fall Time (2)

Vcc = 3.3V, IOUT = -100mA (source)

Vcc = 3.3V, IOUT = 100mA (sink)

Vcc = 3.3V, IOUT = -100mA (source)

Vcc = 3.3V, IOUT = 100mA (sink)

Vgs = 3.3V, COUT = 1.0nF

Vgs = 3.3V, COUT = 1.0nF

Min

Typ

Max

Unit

VCC - 0.6 VCC - 0.4

V

0.35

0.525

V

540

600

660

kHz

1

%/V

0.01

%/°C

1

MHz

0.8

V

2.0

V

1

V

1.25

V

0.25

V

0.8

V

2.0

V

-50

nA

1.7

ms

-43

-50

-57

µA

+0.3

%/°C

150

ns

3.4

ohms

3

ohms

3.4

ohms

1.5

ohms

8

ns

7

ns

 2008 Semtech Corp.

3

www.semtech.com

Share Link: