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ILC6383CIR33X

P1-P3P4-P6P7-P9P10-P12P13-P15
www.fairchildsemi.com
REV. 1.2.6 6/13/02
Features
• Guaranteed start up in PWM at 0.9V input
• Synchronous rectification 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 efficiency > 90%
• 1µA battery input current in shutdown (with V
OUT
= 0V)
• Internal Oscillator frequency: 300kHz to ±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 flag when V
OUT
is in regulation
Applications
• Cellular Phones, Pagers
• Palmtops, PDAs and portable electronics
• High efficiency 1V step up converters
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 rectification and externally selectable
PFM/PWM mode of operation allows the selection of the
best efficiency 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 fixed output voltage
while the ILC6383-ADJ allows adjustable output voltage to
6V maximum. Output voltage accuracy is ±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.
ILC6383
1-Cell to 3-Cell Boost DC-DC Converter with True
Load Disconnect, 3.3V, 5V or Adjustable Output
47µF
ON
OFF
V
IN
1 to 3-cell
R5
R6
15µH
L
C
OUT
R1
R2
ILC6383-ADJ
MSOP-8
L
X
V
IN
LBI/SD
SEL
GND
LBO
V
FB
V
OUT
V
OUT
V
OUT
= 1.25 (1+R1/R2)
1
2
3
4
8
7
6
5
C
IN
+
+
47µF
ILC6383-XX
1
3
2
4
8
6
7
5
L
X
V
IN
LBI/SD
SEL
GND
LBO
POK
V
OUT
ON
OFF
V
IN
1 to 3-cell
R5
R6
15µH
MSOP-8
L
V
OUT
47µF
C
OUT
Low Battery
Detector Output
Power Good Output
C
IN
+
+
PWM
PFM
PWM
PFM
47µF
Figure 1. ILC6383CIR-XX
Figure 2. ILC6383CIR-ADJ
Typical Applications
ILC6383 PRODUCT SPECIFICATION
2
REV. 1.2.6 6/13/02
Pin Assignments
Pin Definitions
Absolute Maximum Ratings
(Note 1)
Pin Number Pin Number Pin Description
1L
X
Inductor input
. Inductor L connected between this pin and the battery
2V
IN
Input Voltage
. Connect directly to battery
3 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.
4 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.
5 POK
(ILC6383CIR-XX)
Power Good Output
. This open drain output pin will go high when output
voltage is within regulation, 0.92*V
OUT(NOM)
< V
threshold
< 0.98*V
OUT(NOM)
V
FB
(ILC6383CIR-ADJ)
Feedback Input
. This pin sets the adjustable output voltage via an
external resistor divider network. The formula for choosing the resistors is
shown in the “Applications Information” section.
6 LBO
This open drain output will go low if the battery voltage is below the low
battery threshold set at pin 3
7 GND
Ground of the IC
. Connect this pin to the battery and system ground
8V
OUT
Regulated output voltage
.
Parameter Symbol Ratings Units
Voltage on V
OUT
pin V
OUT
-0.3 to 7 V
Voltage on LBI, Sync, LBO
, POK, V
FB
, L
X
and V
IN
pins - -0.3 to 7 V
Peak switch current on L
X
pin IL
X
1A
Current on LBO
pin I
SINK(LBO)
5 mA
Continuous total power dissipation at 85˚C P
D
315 mW
Short circuit current I
SC
Internally protected
(1 sec. duration)
A
Operating ambient temperature T
A
-40 to 85 °C
Maximum junction temperature T
J(MAX)
150 °C
Storage temperature T
stg
-40 to 125 °C
Lead temperature (soldering 10 sec.) 300 °C
Package thermal resistance
θ
JA
206 °C/W
MSOP
(TOP VIEW)
ILC6383CIR-XX
SEL
LB/SD
V
IN
L
X
1
2
3
4
5
6
7
8
V
OUT
GND
LBO
POK
SEL
LB/SD
1
2
3
4
5
6
7
8
GND
LBO
V
FB
MSOP
(TOP VIEW)
ILC6383CIR-ADJ
L
X
V
IN
V
OUT
PRODUCT SPECIFICATION ILC6383
REV. 1.2.6 6/13/02
3
Electrical Characteristics ILC6383CIR-33 in PFM Mode
(SEL in LOW State)
Unless otherwise specified, all limits are at V
IN
= V
LBI
= 2.0V, I
OUT
= 1mA and T
A
= 25°C, test circuit Figure 1.
BOLDFACE
type indicates limit that apply over the full operating temperature range. (Note 2)
Electrical Characteristics ILC6383CIR-33 in PWM Mode
(SEL Open)
Unless otherwise specified, all limits are at V
IN
= V
LBI
= 2.0V, I
OUT
= 50mA and T
A
= 25°C, test circuit Figure 1.
BOLDFACE
type indicates limit that apply over the full operating temperature range. (Note 2)
Electrical Characteristics ILC6383CIR-50 in PFM Mode
(SEL in LOW State)
Unless otherwise specified, all limits are at V
IN
= V
LBI
= 2.4V, I
OUT
= 1mA and T
A
= 25°C, test circuit Figure 1.
BOLDFACE
type indicates limit that apply over the full operating temperature range. (Note 2)
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT(nom)
1.5V <
V
IN
<
2.4V,
1.5V <
V
IN
<
2.4V
3.217
3.184
3.3 3.382
3.415
V
Maximum Output
Current
I
OUT
V
OUT
≥
0.96V
OUT(nom)
, 150 mA
Load Regulation ∆∆
∆∆
V
OUT
V
OUT
1mA <
I
OUT
<
20mA 1 %
No Load Battery
Input Current
I
IN (no load)
I
OUT
= 0mA, V
IN
=V
LBI
=1.2V 250 µA
Efficiency
η
I
OUT
= 20mA 88 %
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT
1.5V < V
IN
< 2.4V,
1.5V < V
IN
< 2.4V
3.217
3.184
3.3 3.382
3.415
V
Maximum Output
Current
I
OUT
V
IN
= 1.2V, V
OUT
≥
0.96V
OUT(nom)
V
IN
= 2.0V, V
OUT
≥
0.96V
OUT(nom)
V
IN
= 2.4V, V
OUT
≥
0.96V
OUT(nom)
V
IN
= 3.0V, V
OUT
≥
0.96V
OUT(nom)
75
150
200
375
mA
Load Regulation ∆∆
∆∆
V
OUT
V
OUT
50mA < I
OUT
< 100mA 1 %
Efficiency
η
I
OUT
= 50mA 90 %
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT(nom)
1.5V < V
IN
< 3V,
1.5V < V
IN
< 3V
4.875
4.825
5.0 5.125
5.175
V
Maximum Output
Current
I
OUT
V
OUT
≥ 0.96V
OUT(nom)
150 mA
Load Regulation ∆∆
∆∆
V
OUT
V
OUT
1mA < I
OUT
< 20mA 1 %
No Load Battery
Input Current
I
IN (no load)
I
OUT
= 0mA, V
IN
=V
LBI
=1.5V 550 µA
Efficiency η I
OUT
= 20mA 90 %
P1-P3P4-P6P7-P9P10-P12P13-P15

ILC6383CIR33X

Mfr. #:
Buy ILC6383CIR33X
Manufacturer:
ON Semiconductor / Fairchild
Description:
Switching Voltage Regulators DC/DC
Lifecycle:
New from this manufacturer.
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