SC4608EVB データシートの表示（PDF） - Semtech Corporation

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SC4608EVB

Low Input, MHz Operation, High Efficiency Synchronous Buck

Semtech Corporation 

SC4608

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, AVDD = 3.3V, AVDD = PVDD , CT = 270pF, TA = -40°C to 85°C, TA=TJ

Parameter

Test Conditions

Min

Typ

Error Amplifier (Cont.)

Slew Rate (1)

2.4

VOUT High

VOUT Low

Oscillator

ICOMP = -5.5mA

ICOMP = 5.5mA

AVDD - 0.5

AVDD - 0.3

0.3

Initial Accuracy

TA = 25°C

525

575

OSC Line Regulation

TA = 25°C, AVDD = 2.7V to 5.5V

1

Temperature Coefficient

TA = -40°C to 85°C

0.02

Minimum Operation Frequency (1)

50

Maximum Operation Frequency (1)

Ramp Peak to Valley

1

Ramp Peak Voltage

1.3

Ramp Valley Voltage

0.3

Soft Start, Current Limit

Programmable Soft Start Time (1)

C = 22nF

2

Soft Start Charge Current

ISET Bias Current

Temperature Coefficient of ISET

TA = 25°C

TJ = 25°C

-4

-5.25

-45

-50

0.3

Current Limit Blank Time (1)

130

Gate Drive

DRVH Minimum OFF Time (1)

TA = 25°C

160

Peak Source (DRVH)

Vgs = 3.3V, ISOURCE = 100mA

3.5

Peak Sink (DRVH)

Vgs = 3.3V, ISINK = 100mA

3

Peak Source (DRVL) (1)

Vgs = 3.3V, ISOURCE = 100mA

2.2

Peak Sink (DRVL)

Vgs = 3.3V, ISINK = 100mA

2

Output Rise Time

Vgs = 3.3V, COUT = 4.7nF

35

Output Fall Time

Vgs = 3.3V, COUT = 4.7nF

27

Minimum Non-Overlap (1)

40

 2006 Semtech Corp.

3

Max

Unit

V/µs

V

0.45

625

kHz

2.5

%/V

%/°C

kHz

1M

Hz

V

V

V

ms

-6.5

µA

-55

µA

%/°C

ns

ns

6

Ω

5

Ω

Ω

4

Ω

ns

ns

ns

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