AIC16303CN Ver la hoja de datos (PDF) - Analog Intergrations

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AIC16303CN

2-Cell, Step-Up DC/DC Converter Controller

Analog Intergrations 

PIN DESCRIPTION

AIC1630/ AIC1630-3 / AIC1630-5

PIN 1: SD

- The AIC1630 goes in shutdown

mode and consumes less than

10µA when SD pin is pulled to

ground and it goes in normal

operating mode when the SD pin

is pulled to a positive voltage

above 100mV.

PIN 2: VIN - Input supply.

PIN 3: EXT - Push-pull drive output to drive

external power switch.

PIN 4:SGND - Ground connected to source of

power switch.

PIN 5:CGND - Ground for control circuits of the

IC. It should be separated from

SGND to avoid the interference.

PIN 6:LBO

- Open drain output of the battery

low detector, with 45Ω “ON

resistance” at VIN=2V. It is pulled

low when the voltage on LBI pin

is below 1.22V.

PIN 7:LBI

- The noninverting input of the

battery low detector, of which the

inverting input is internally

connects to 1.22V voltage

reference.

PIN 8:VOUT - The output voltage feedbacks to

the IC through this pin.

AIC1630

AIC1630A

PIN 1: SD

- The AIC1630A goes in shutdown

mode and consumes less than 10

µA when SD pin is pulled to

ground and it goes in normal

operating mode when the SD pin

is pulled to a positive voltage

above 100mV.

PIN 2: VIN - Input supply.

PIN 3: EXT - Push-pull drive output to drive

external power switch.

PIN 4: GND - Ground.

PIN 5: FB

- Output voltage can either be

internally set to 5 volt by

grounding FB pin, or be externally

set to an arbitrary voltage by

applying to FB pin the divider

voltage of two divider resistors.

VOUT voltage is given by the

following equation:

R1

R2

=

VOUT

0.617

−1

where R1 = Resistor connected

between FB pin and VOUT pin.

R2= Resistor connected between

FB pin and ground.

PIN 6:

LBO

VOUT=Output voltage to be set.

- Open drain output of the battery

low detector, with 45Ω “ON

resistance” at VIN=2V. It is pulled

low when the voltage on LBI pin is

below 1.22V.

PIN 7: LBI

- The noninverting input of the

battery low detector, of which the

inverting input is internally

connects to 1.22V voltage

reference.

PIN 8: VOUT- The output voltage feedbacks to

the IC through this pin. If output

voltage was externally set, the

VOUT pin can be tied to any low

impedance node with voltage

between the external power switch

threshold and 7V

6

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