SC1159 查看數據表（PDF） - Semtech Corporation

零件编号

产品描述 (功能)

生产厂家

SC1159

Programmable Synchronous DC/DC Hysteretic Controller with VRM 8.5 VID Range

Semtech Corporation 

SC1159

POWER MANAGEMENT

DC Electrical Characteristics

(Cont.) Unless specified: 0 < TJ < 125°C, VIN = 12V

Parameter

Symbols Conditions

Min Typ Max Units

Reference/Voltage Identification

Reference Voltage Accuracy

VREF

11.4V < VIN12V< 12.6V, over full

-1

VID range (see Output Voltage

Table)

1

%

VID0 - VID25mV High Threshold

Voltage

VTH(H)

2.25

V

VID0 - VID25mV Low Threshold

Voltage

VTH(L)

1

V

Power Good

Undervoltage Threshold

Output Saturation Voltage

Hysteresis

Over Voltage Protection

VTH(PWRGD)

VSAT

VHYS(PWRGD)

IO = 5mA

82

88 %VREF

0.5

V

10

mV

OVP Trip Point

Hysteresis (1)

Soft Start

VOVP

VHYS(OVP)

12

15

20 %VOUT

10

mV

Charge Current

Discharge Current

ICHG

VSS = 0.5V, resistance from VREFB 10.4 13 15.6 µA

pin to AGND = 20kΩ, VREFB = 1.3V

Note: ICHG = (IVREFB / 5)

Idischg V(SS) = 1V

1

mA

Inhibit Comparator

Start Threshold

VIN 12V UVLO

Start Threshold

Hysteresis

Hysteretic Comparator

Input Offset Voltage

Input Bias Current

Hysteresis Accuracy

Hysteresis Setting

Vstart(NH)

VstartUVLO

VhysUVLO

VosHYSCMP

IbiasHYSCMP

VHYS ACC

VHYS SET

VDROOP pin grounded

1 2.0 2.4

V

9.25 10.25 11.25 V

1.8 2

2.2

V

5

mV

1

uA

7

mV

60 mV

 2002 Semtech Corp.

3

www.semtech.com

Share Link: