ILC6383CIR33X Просмотр технического описания (PDF) - Fairchild Semiconductor

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ILC6383CIR33X

1-Cell to 3-Cell Boost DC-DC Converter with True Load Disconnect, 3.3V, 5V or Adjustable Output

Fairchild Semiconductor 

ILC6383

Pin Assignments

LX 1

8 VOUT

VIN 2

7 GND

LB/SD 3

6 LBO

SEL 4

MSOP

(TOP VIEW)

5 POK

ILC6383CIR-XX

LX 1

8 VOUT

VIN 2

7 GND

LB/SD 3

6 LBO

SEL 4

MSOP

(TOP VIEW)

5 VFB

ILC6383CIR-ADJ

PRODUCT SPECIFICATION

Pin Definitions

Pin Number

1

2

3

4

5

6

7

8

Pin Number

Pin Description

LX

Inductor input. Inductor L connected between this pin and the battery

VIN

Input Voltage. Connect directly to battery

LBI/SD

Low battery detect input and shutdown. Low battery detect threshold is

set with this pin using a potential divider. If this pin is pulled to logic low

then the device will shutdown.

SEL

Select Input. A low logic level signal applied to this pin selects PFM

operation mode. If the pin is left open or high logic level is applied, PWM

mode is selected.

POK

Power Good Output. This open drain output pin will go high when output

(ILC6383CIR-XX) voltage is within regulation, 0.92*VOUT(NOM) < Vthreshold < 0.98*VOUT(NOM)

VFB

Feedback Input. This pin sets the adjustable output voltage via an

(ILC6383CIR-ADJ) external resistor divider network. The formula for choosing the resistors is

shown in the “Applications Information” section.

LBO

This open drain output will go low if the battery voltage is below the low

battery threshold set at pin 3

GND

Ground of the IC. Connect this pin to the battery and system ground

VOUT

Regulated output voltage.

Absolute Maximum Ratings (Note 1)

Parameter

Voltage on VOUT pin

Voltage on LBI, Sync, LBO, POK, VFB, LX and VIN pins

Peak switch current on LX pin

Current on LBO pin

Continuous total power dissipation at 85˚C

Short circuit current

Operating ambient temperature

Maximum junction temperature

Storage temperature

Lead temperature (soldering 10 sec.)

Package thermal resistance

2

Symbol

VOUT

-

ILX

ISINK(LBO)

PD

ISC

TA

TJ(MAX)

Tstg

θ JA

Ratings

-0.3 to 7

-0.3 to 7

1

5

315

Internally protected

(1 sec. duration)

-40 to 85

150

-40 to 125

300

206

Units

V

V

A

mA

mW

A

°C

°C

°C

°C

°C/W

REV. 1.2.6 6/13/02

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