SC1402(2001) Просмотр технического описания (PDF) - Semtech Corporation

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SC1402
(Rev.:2001)

Multi-Output, Low-Noise Power Supply Controller for Notebook Computers

Semtech Corporation 

SC1402

POWER MANAGEMENT

Absolute Maximum Ratings

Parameters

Maximum

Units

V+, BST3, BST5 to GND

-0.3 to +36

V

PGND to GND

±0.3

V

PHASE3 to BST3, and PHASE5 to BST5

-6 to +0.3

V

VL to GND

-0.3 to 6

V

REF, SYNC, SEQ, PSAVE, TIME_ON5, RESET to GND

-0.3 to (VL + 0.3V)

V

RUN/ON3, SHDN to GND

-0.3 to (V+ + 0.3V)

V

VDD to GND

-0.3 to +30V

V

12 Out to GND

-0.3 to (VDD + 0.3V)

V

VL, REF Short to GND

Continuous

sec.

12 Out Short to GND

Continuous

sec.

REF Current

+5

mA

VL Current

+50

mA

12 Out Current

+200

mA

VDD Shunt Current

+15

mA

TS Storage Temperature

TL Lead soldering temperature

-65 to +150

°C

+300, 10 seconds

°C

Electrical Characteristics

(Unless otherwise noted: V+ = 15V, both PWMs on, SYNC = VL, VL load = 0mA, REF load = 0mA, PSAVE = 0V, TA =-40 to +85°C.

Typical values are at TA = +25°C).

Parameters

Conditions

MIN TYP MAX Units

MAIN SMPS CONTROLLERS

Input Voltage Range

6.0

30.0

V

3V Output Voltage in Adjustable Mode V+ = 6V to 30V, CSH3-CSL3 = 0V, CSL3 2.45 2.5 2.55

V

tied to FB3

3V Output Voltage in Fixed Mode

V+ = 6V to 30V. 0mV < CSH3-CSL3 <

3.17 3.3 3.43

V

80mV, FB3 = 0V

5V Output Voltage in Adjustable Mode

V+ = 6V to 30V, CSL5 tied to FB5

2.45 2.5 2.55

V

5V Output Voltage in Fixed Mode

V+ = 6V to 30V, 0mV < CSH5-CSL5 <

4.82 5.0 5.18

V

80mV, FB5 = 0V

Output Voltage Adjust Range

Either SMPS

REF

5.5

V

Adjustable-Mode Threshold Voltage

Dual Mode comparator

0.5

1.3

V

 2001 Semtech Corp.

2

www.semtech.com

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