SC1146 查看數據表（PDF） - Semtech Corporation

零件编号

产品描述 (功能)

比赛名单

SC1146

VRM9.0 PROGRAMMABLE, MULTI-PHASE, HIGH PERFORMANCE PWM CONTROLLER

Semtech Corporation 

VRM9.0 PROGRAMMABLE, MULTI-PHASE,

HIGH PERFORMANCE PWM CONTROLLER

SC1146

July 25, 2000

ELECTRICAL CHARACTERISTICS (Cont.)

Unless otherwise noted: TA = 25°C, VCC5V = 5V, VCC2 = 5V, 4-Phase operation.

PARAMETER

SYMBOL

CONDITIONS

Bgout Voltage

Bgout Impedance

External Clock Freq. Range

Oscillator Frequency

Internal Clock Freq. Range

Match DRV0-3

PWM Off Time

VBgout

RO_Bg

Fext_CK

FOSC

Fint_CK

∆=D

Toff

Vid = 00000

Iref = 250µA

Duty cycle (Avg) = 50%

MIN TYP MAX UNITS

TBD 1.30 TBD V

3

KΩ

.80 8.0 8.5 MHz

7.6 8.0 8.4 MHz

.80 8.0 8.5 MHz

-1

+1

%

25

%

Overcurrent Comparator,

Comparator, Common Mode

Range

OC+I/P bias Current

OCC_CMR

IB_OC+

Vin = 5V

OC-I/P bias Current

IB_OC-

Vin = 5V

Input Offset Voltage

Feedback Input Impedance

Duty Cycle Range

VOS_OCC

Ri_FB

D

Vin = 5V

VO = 2.00V

CONVERTER SPECIFICATIONS, Reference Application Circuit

Output Accuracy Over Set

Range

Load Regulation

Line Regulation

POWER GOOD SIGNAL

VOUT

∆VOUT

∆IO

∆VOUT

∆VIN

VID 0-4 = 0000-1111

VCC5V = 5.0V

VO = 2.000V

IO = 3A - 20A

VCC5V = 5V, VO = 2.000V

VIN = 4-6V, (VIN separated from

Vcc5v) IO = 5A , Clk = external

Off Leakage Current

Ileakage_Off

PWRGOOD = Logic High

Power Good Max Sink Current ISink_Max

PWRGOOD< = .8V

Power Good Threshold

Pwrgood_T_lo

Vout = 1.300V - 1.950V

Voltage Tolerance

Pwrgood_T_Hi

Vout = 2.000V - 3.500V

3

15

V

+75

+250 µΑ

+75

+250 µΑ

10

mV

12

ΚΩ

0

75

%

-1

+1

%

.025 .05 %/A

%/V

.15

2

µA

2

mA

+100

mV

+150

mV

Note:

(1) This device is ESD sensitive. Use of standard ESD handling precautions is required.

The SC1146 is patent pending

© 2000 SEMTECH CORP.

3

652 MITCHELL ROAD NEWBURY PARK CA 91320

Share Link: