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ILC6363CIR50X

P1-P3P4-P6P7-P9P10-P12P13-P14
www.fairchildsemi.com
REV. 1.3.5 5/21/02
Features
• ILC6363CIR-50: Fixed 5.0V output; custom voltages are
available upon request
• ILC6363CIR-ADJ: Adjustable output to 6V maximum
• Capable of 500mA output current
• Peak efficiency: > 90% at V
OUT
= 3.6V, I
OUT
= 300mA,
V
IN
= 3.6V
• No external diode is required (synchronous rectification)
• Battery input current of 300µA at no load
• True load disconnect from battery input in shutdown
(1µA)
• Oscillator frequency: 300kHz ±15%
• Low battery detector with 100ms transient rejection delay
• Power good output flag when V
OUT
is in regulation
• MSOP-8 package
Applications
• Cellular phones
• Palmtops, PDAs and portable electronics
• Equipment using single Lithium-Ion batteries
Description
The ILC6363 step-up/step-down DC-DC converter is a
switch mode converter, capable of supplying up to 500mA
output current, at a fixed or user selectable output voltage.
The range of input, and output voltage options makes the
ILC6363 ideal for Lithium-ion (Li-ion), or any other battery
application, where the input voltage range spans above and
below the regulated output voltage. When ILC6363’s input
voltage exceeds the output voltage by more than 800mV, the
output will begin to track the input linearly.
The ILC6363 is a direct replacement for ILC6360, in appli-
cations 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 better efficiency at light load,while
PWM is recommended for more than 50mA load current.
In shutdown mode, the device allows true load disconnect
from battery input.
Configured as a 300kHz, fixed frequency PWM/PFM boost
converter, the ILC6363 can perform a limited buck operation
in PFM mode, when the input voltage is up to 0.8V higher
than the output voltage.
The ILC6363 is unconditionally stable with no external
compensation; the sizes of the input and output capacitors
influence input and output ripple voltages, respectively.
Since the ILC6363 has an internal synchronous rectifier, the
standard fixed voltage version requires minimal external
components: an inductor, an input capacitor, and an output
capacitor. If a tantalum output capacitor is used, then an
additional 10µF ceramic output capacitor will help reduce
output ripple voltage.
Other features include a low battery input detector with a
built-in100ms transient rejection delay and a power good
indicator useful as a system power on reset.
ILC6363
Step-Up DC-DC Converter for One-Cell Lithium-Ion
Batteries
Typical Circuit
Optimized to Maximize Battery Life
90
80
70
Time
4.2
3.6
3.0
Battery Voltage (V)
ILC6363 Efficiency (%)
Figure 1.
15µH
L
C
OUT
ILC6363CIR-XX
L
X
V
IN
LBI/SD
SEL
GND
LBO
POK
V
OUT
V
OUT
1
2
3
4
8
7
6
5
+
V
IN
+
100µF
C
IN
+
10µF 100µF
Low Battery
Detector Output
Power Good Output
(Fixed V
OUT
only)
2.7V to 4.2V
R5
R6
MSOP-8
ON
OFF
PFM
PWM
ILC6363 PRODUCT SPECIFICATION
2
REV. 1.3.5 5/21/02
Pin Assignments
Pin Definitions
Absolute Maximum Ratings
Pin Number Pin Name Pin Function 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
(ILC6363CIR-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
(ILC6363CIR-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
Low Battery Output
. 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)
5mA
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)
ILC6363CIR-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)
ILC6363CIR-ADJ
V
IN
L
X
V
OUT
PRODUCT SPECIFICATION ILC6363
REV. 1.3.5 5/21/02
3
Electrical Characteristics ILC6363CIR-50 in PFM Mode
(SEL in LOW State)
Unless otherwise specified, all limits are at V
IN
= V
LBI
= 3.6V, I
OUT
= 1mA and T
A
= 25°C, test circuit Figure 1.
BOLDFACE
type indicate limits over the specified operating temperature range. (Note 2)
Electrical Characteristics ILC6363CIR-50 in PWM Mode
(SEL Open)
Unless otherwise specified, all limits are at V
IN
= V
LBI
= 3.6V, I
OUT
= 100mA and T
A
= 25°C, test circuit Figure 1.
BOLDFACE
type indicate limits over the full operating temperature range. (Note 2)
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT(nom)
2.7V <
V
IN
<
4.2V 4.875
4.825
5.0 5.125
5.175
V
Maximum Output
Current
I
OUT
V
OUT
≥
0.96V
OUT(nom)
,
V
IN
= 2.7V
250 mA
Load Regulation
∆∆
∆∆
V
OUT
V
OUT
1mA <
I
OUT
<
50mA 1 %
No Load Battery
Input Current
I
IN (no load)
I
OUT
= 0mA 300 µA
Efficiency
η
I
OUT
= 20mA 85 %
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT(nom)
2.7V < V
IN
< 4.2V 4.850
4.800
5.0 5.150
5.200
V
Maximum Output
Current
I
OUT
V
OUT
≥
0.92V
OUT(nom)
500 mA
Load Regulation
∆∆
∆∆
V
OUT
V
OUT
50mA < I
OUT
< 200mA
50mA < I
OUT
< 300mA
3
4
%
Efficiency
η
I
OUT
= 300mA 92 %
P1-P3P4-P6P7-P9P10-P12P13-P14

ILC6363CIR50X

Mfr. #:
Buy ILC6363CIR50X
Manufacturer:
ON Semiconductor / Fairchild
Description:
Switching Voltage Regulators Step-Up/Step Down DC-DC
Lifecycle:
New from this manufacturer.
Delivery:
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