AIC16303A 데이터 시트보기 (PDF) - Analog Intergrations
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AIC16303A Datasheet PDF : 9 Pages
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AIC1630A
HIGH-EFFICIENCY STEP-UP DC/DC CONVERTER CONTROLLER
SPEC NO: DS-1630A-04
PIN DESCRIPTION
PIN 1: SD
- The AIC1630A goes in shutdown
mode and consumes less than 10µ
A 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
0.628
-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
APPLICATION EXAMPLES
VOUT
(+5V)
VIN
L
1N5819
D1
LOAD +
C3
100Ω
R3
+
C1
5nF C2
270Ω
R4
95
SD
VIN
EXT
GND
VOUT
LBI
LBO
FB
AIC1630A
90
85
80
75
VIN= 2V
70
VIN= 4.5V
VIN= 2.2V VIN= 3V VIN= 3.3V
65
60
0
100
200
300
400
500
600
700
800
Load Current (mA)
Fig. 1 5V Output Step-Up Converter
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510
5
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