SC4602A データシートの表示（PDF） - Semtech Corporation

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SC4602A

High Efficiency Synchronous, Step Down Controller

Semtech Corporation 

SC4602A/B

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, VCC = 3.3V, TA = -40oC to 85oC, TA = TJ.

Parameter

Test Conditions

Error Amplifier (Cont.)

VCOMP High

VCOMP Low

Oscillator

ICOMP = -2mA

ICOMP = 2mA

Initial Accuracy (SC4602A)

Initial Accuracy (SC4602B)

SYNC/SLEEP Low Threshold

TA = 25°C, VSYNC = HIGH

TA = 25°C, VSYNC = HIGH

SYNC/SLEEP High Threshold

Ramp Peak to Valley (1)

Ramp Peak Voltage (1)

Ramp Valley Voltage (1)

Sleep, Soft Start, Current Limit

Sleep Input Bias Current

VSYNC/SLEEP = 0V

Soft Start Time (1)

SC4602A

SC4602B

Current Limit Threshold (2)

Reference to VCC, 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) (2)

Pull Down Resistance (NDRV) (2)

PDRV Output Rise Time (1)

PDRV Output Fall Time (1)

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

Vcc = 3.3V, IOUT = 50mA (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

2.8

3.1

0.15

0.3

260

300

340

480

550

620

0.8

2.0

1.3

1.5

1.7

1.85

1.9

0.3

0.35

-1

2.4

1.2

-300

0.4

150

3

3

3

3

9

12

Unit

V

V

kHz

kHz

V

V

V

V

V

µA

ms

mV

%/°C

ns

ohms

ohms

ohms

ohms

ns

ns

 2006 Semtech Corp.

3

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