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ILC6383CIRADJX Datasheet

  • ILC6383CIRADJX

  • 1-Cell to 3-Cell Boost DC-DC Converter with True Load Discon...

  • 15頁

  • FAIRCHILD

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ILC6383
1-Cell to 3-Cell Boost DC-DC Converter with True
Load Disconnect, 3.3V, 5V or Adjustable Output
Features
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Guaranteed start up in PWM at 0.9V input
Synchronous recti鏗乧ation requires no external diode
True load disconnect from battery input in shutdown
Up to 75mA at 3.3V and 40mA at 5V from 1V input
Up to 375mA at 3.3V and 300mA at 5V from 3V input
Peak ef鏗乧iency > 90%
1碌A(chǔ) battery input current in shutdown (with V
OUT
= 0V)
Internal Oscillator frequency: 300kHz to 鹵15%
ILC6383: Fixed 3.3V or 5V output
ILC6383-ADJ: Adjustable output to 6V maximum
Low battery detector with 100ms transient rejection delay
Powergood output 鏗俛g when V
OUT
is in regulation
Description
The ILC6383 series of step-up DC-DC converters operate
from 1-cell to 3-cell input. They are direct replacement for
ILC6382, in applications where SYNC pin is not used. The
PFM or PWM operating mode is user selectable through
SEL pin connected to ground or left open, respectively. The
choice should be dependent upon the current to be delivered
to the load: PFM is recommended for input voltage higher
than 1.5V and loads below 100mA, while PWM is recom-
mended for more than 50mA load current and in noise sensi-
tive applications. In shutdown mode, the device allows true
load disconnect from battery input. Designed for wireless
communications applications, the oscillator frequency is set
at 300kHz with no harmonics at sub 20kHz audio band or at
455kHz IF band.
Internal synchronous recti鏗乧ation and externally selectable
PFM/PWM mode of operation allows the selection of the
best ef鏗乧iency at light or full load. The ILC6383 is capable
of delivering 75mA at 3.3V output from a single cell input.
The ILC6383-XX offers 3.3V or 5V 鏗亁ed output voltage
while the ILC6383-ADJ allows adjustable output voltage to
6V maximum. Output voltage accuracy is 鹵3.5% over full
operating temperature range.
Additional features include power good output (POK) and an
internal low battery detector with 100ms transient rejection
delay. The device will reject low battery input transients
under 100ms in duration. The ILC6383 series is available in
a space saving eight lead micro SOP (MSOP-8) package.
Applications
鈥?Cellular Phones, Pagers
鈥?Palmtops, PDAs and portable electronics
鈥?High ef鏗乧iency 1V step up converters
Typical Applications
C
IN
47碌F
+
V
IN
1 to 3-cell
ON
OFF
L
1
15碌H
2 V
IN
R5
3 LBI/SD
R6
4 SEL
LBO 6
POK 5
Low Battery
Detector Output
Power Good Output
GND 7
ILC6383-XX
L
X
V
OUT
8
+
47碌F
C
OUT
V
OUT
V
IN
1 to 3-cell
ON
OFF
R6
4 SEL
V
FB
5
R2
CIN
47碌F
+
L
1
15碌H
2
R5
3 LBI/SD
LBO 6
V
IN
GND 7
ILC6383-ADJ
L
X
V
OUT
8
+
V
OUT
C
OUT
47碌F
R1
MSOP-8
PWM
PFM
PWM
PFM
MSOP-8
V
OUT
= 1.25 (1+R1/R2)
Figure 1. ILC6383CIR-XX
Figure 2. ILC6383CIR-ADJ
REV. 1.2.6 6/13/02

ILC6383CIRADJX 產(chǎn)品屬性

  • 4,000

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 升壓（升壓）

  • 可調(diào)式

  • 1

  • 2.5 V ~ 6 V

  • 1 V ~ 6.5 V

  • -

  • 300kHz

  • 375mA

  • 是

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 帶卷 (TR)

  • 8-MSOP

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