Datasheet ILC6363 Datasheet (Fairchild)

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ILC6363

Step-Up DC-DC Converter for One-Cell Lithium-Ion
Batteries

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
V

= 3.6V

IN

OUT

= 3.6V, I

= 300mA,

OUT

• 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

is in regulation

OUT

• 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 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 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 b uck 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.

Typical Circuit

IN

V

IN

2.7V to 4.2V

ON

OFF

C

100µF

+

L

15µH

R5

R6

PWM

PFM

ILC6363CIR-XX

1

X

L

2

V

IN

3

LBI/SD

4

SEL

MSOP-8

Figure 1.

V

OUT

GND

LBO

POK

C

OUT

8

7

6

5

10µF 100µF

+

+

Low Battery
Detector Output

Power Good Output
(Fixed V

OUT

V

only)

OUT

Optimized to Maximize Battery Life

90

80

70

ILC6363 Efficiency (%)

Time

4.2

3.6

3.0

REV. 1.3.5 5/21/02

Battery Voltage (V)

ILC6363 PRODUCT SPECIFICATION

Pin Assignments

V

OUT

L

X

1

8

V

OUT

L

X

1

8

V

LB/SD

SEL

IN

2

3

4

(TOP VIEW)

ILC6363CIR-XX

MSOP

7

GND

LBO

6

5

POK

V

LB/SD

SEL

2

IN

3

4

MSOP

(TOP VIEW)

ILC6363CIR-ADJ

7

GND

LBO

6

5

V

FB

Pin Definitions

Pin Number Pin Name Pin Function Description

1L
2V

X
IN

3 LBI/SD

4 SEL

POK

(ILC6363CIR-XX

5

V

FB

(ILC6363CIR-ADJ)

6 LBO

7 GND
8V

OUT

Inductor input . Inductor L connected between this pin and the battery
Input Voltage . Connect directly to battery
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.

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.

Power Good Output . This open drain output pin will go high when

output voltage is within regulation, 0.92•V

0.98•V

OUT(NOM)

OUT(NOM)

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.

Low Battery Output . This open drain output will go low if the battery

voltage is below the low battery threshold set at pin 3.

Ground of the IC . Connect this pin to the battery and system ground
Regulated output voltage .

< V

threshold

<

Absolute Maximum Ratings

Parameter Symbol Ratings Units

Voltage on V
Voltage on LBI, Sync, LBO, POK, V
Peak switch current on L
Current on LBO pin I
Continuous total power dissipation at 85°C P
Short circuit current I

Operating ambient temperature T
Maximum junction temperature T
Storage temperature T
Lead temperature (soldering 10 sec.) 300 °C
Package thermal resistance

2

pin V

OUT

, L

and V

FB

X

pin IL

X

pins -0.3 to 7 V

IN

OUT

X

SINK(LBO)

D

SC

A

J(MAX)

stg

θ

JA

-0.3 to 7 V

1A
5mA

315 mW

Internally protected

(1 sec. duration)

-40 to 85 °C
150 °C

-40 to 125 °C

206 °C/W

REV. 1.3.5 5/21/02

A

≥

η

≥

η

PRODUCT SPECIFICATION ILC6363

Electrical Characteristics ILC6363CIR-50 in PFM Mode

Unless otherwise specified, all limits are at V

IN

= V

= 3.6V, I

LBI

= 1mA and T

OUT

(SEL in LOW State)

= 25°C, test circuit Figure 1.

A

BOLDFACE type indicate limits over the specified operating temperature range. (Note 2)

Parameter Symbol Conditions Min. Typ. Max. Units

Output Voltage V

Maximum Output
Current

Load Regulation

No Load Battery

OUT(nom)

I

OUT

∆∆

∆∆

V

OUT

V

OUT

I

IN (no load)

2.7V <

V

OUT

V

= 2.7V

IN

1mA <

I

OUT

<

V

4.2V 4.875

IN

4.825

0.96V

OUT(nom)

I

50mA 1 %

<

OUT

,

5.0 5.125

5.175

250 mA

= 0mA 300 µA

Input Current
Efficiency

Electrical Characteristics ILC6363CIR-50 in PWM Mode

Unless otherwise specified, all limits are at V

I

= 20mA 85 %

OUT

(SEL Open)

= V

IN

= 3.6V, I

LBI

= 100mA and T

OUT

= 25°C, test circuit Figure 1.

A

BOLDFACE type indicate limits over the full operating temperature range. (Note 2)

Parameter Symbol Conditions Min. Typ. Max. Units

Output Voltage V

Maximum Output

OUT(nom)

I

OUT

2.7V < V

V

OUT

< 4.2V 4.850

IN

0.92V

OUT(nom)

4.800

5.0 5.150

5.200

500 mA

Current
Load Regulation

Efficiency

∆∆

∆∆

V

V

OUT

OUT

50mA < I
50mA < I

I

= 300mA 92 %

OUT

OUT
OUT

< 200mA
< 300mA

3
4

V

V

%

REV. 1.3.5 5/21/02

3

ILC6363 PRODUCT SPECIFICATION

General Electrical Characteristics

T

= 25°C, V

A

BOLDFACE indicate limits over the specified operating temperature range. (Note 2).

output voltage low V

LBO

output leakage current I

LBO
Shutdown input voltage low V
Shutdown input voltage high V
SEL input voltage high V
SEL input voltage low V

output voltage low V

POK

output voltage high V

POK

output leakage Current I

POK

threshold V

POK

hysteresis V

POK
Feedback voltage

(ILC6363CIR-ADJ only)
Output voltage adjustment

range (ILC6363CIR-ADJ only)
Minimum startup voltage V

Input voltage range V

Battery input current in load
disconnect mode

Switch on resistance R

Oscillator frequency f
LBI input threshold V

Input leakage current I

LBI hold time t

Notes:

1. Absolute maximum ratings indicate limits which, when exceeded, may result in damage to the component. Electrical
specifications do not apply when operating the device outside its rated operating conditions.

2. Specified min/max limits are production tested or guaranteed through correlation based on statistical control methods.
Measurements are taken at constant junction temperature as close to ambient temperature as possible using low duty cycle
pulse testing.

3. Guaranteed by design

4. In order to get a valid low-battery-output (LBO) signal, the input voltage must be lower than the low-battery-input (LBI)
threshold for a duration greater than the low battery hold time (Hold(LBI)). This feature eliminates false triggering due to
voltage transients at the battery terminal.

= V

IN

= 3.6V, I

LBI

= 50mA, unless otherwise specified.

OUT

Parameter Symbol Conditions Min. Typ. Max. Units

I

LBO(low)

LBO(hi)

SD(low)
SD(hi)
SEL(hi)
SEL(low)
POK(low)

POK(hi)

L(POK)

TH(POK
HYST

V

FB

V

OUT(ADJ) min

V

OUT(ADJ) max

I

IN(start)

IN

I

IN(SD)

ds(on)

osc

REF

LEAK

HOLD(LBI)

= 2mA, open drain

SINK

output, V
V

LBO

= 1V

LBI

= 5V 1

16

1.5 V

I

= 2mA, open drain

SINK

output

6V at pin 5 2 µA

0.92xV

OUT

0.95xV

OUT

50 mV

1.225

1.250 1.275

1.212

VIN = 0.9V, I
V

= 3V, I

IN

= 10mA, PWM

OUT

OUT

OUT

= 50mA

= 50mA

2.5
6

0.9 1 V

mode
V

OUT

± 4%
I

OUT

V

LBI/SD

V

OUT

= V

OUT(nominal)

= 10mA

< 0.4V,

= 0V

0.9

1

1 10 µA

(short circuit)
N-Channel MOSFET

P-Channel MOSFET

400
750

255 300 345 kHz

1.175

1.250 1.325

1.150

Pins LB/SD,SEL and
VFB, (Note 3)

(Note 4) 100 120 mS

0.4

0.4

0.4 V

0.4 V

6 V

0.98xV

OUT

1.288

V

OUT(nomi-

+ 0.8V

nal)

1.350

200 nA

V

µA

V
V

V

V

V

V

mΩ

V

2

4

REV. 1.3.5 5/21/02

PRODUCT SPECIFICATION ILC6363

Application Information

The ILC6363 performs boost DC-DC conversion by control­ling the switch element as shown in the simplified circuit in
Figure 3 below.

Figure 3. Basic Boost Circuit

When the switch is closed, current is built up through the
inductor. When the switch opens, this current is forced
through the diode to the output. As this on and off switching
continues, the output capacitor voltage builds up due to the
charge it is storing from the inductor current. In this way, the
output voltage is boosted relative to the input.

In general, the switching characteristic is determined by the
output voltage desired and the current required by the load.
The energy transfer is determined by the power stored in the
coil during each switching cycle.

PL = ƒ(tON, VIN)

Synchronous Rectification

The ILC6363 also uses a technique called “synchronous
rectification” which removes the need for the external diode
used in other circuits. The diode is replaced with a second
switch or in the case of the ILC6363, an FET as shown in
Figure 4 below.

V

IN

ILC6363

-

+

+

DELAY

-

V

OUT

POK

LBO

PWM/PFM

CONTROLLER

SHUTDOWN

CONTROL

SEL

SW2

V

REF

LB/SD

L

X

SW1

GND

Figure 4. Simplified ILC6383 block diagram

The two switches now open and close in opposition to each
other, directing the flow of current to either char ge the induc­tor or to feed the load. The ILC6363 monitors the voltage on
the output capacitor to determine how much and how often
to drive the switches.

PWM Mode Operation

The ILC6363 uses a PWM or Pulse Width Modulation
technique. The switches are constantly driven at typically
300kHz. The control circuitry varies the power being
delivered to the load by varying the on-time, or duty cycle,
of the switch SW1 (see Figure 5). Since more on-time
translates to higher current build-up in the inductor, the
maximum duty cycle of the switch determines the maximum
load current that the device can support. The minimum value
of the duty cycle determines the minimum load current that
can maintain the output voltage within specified values.

There are two key advantages of the PWM type controllers.
First, because the controller automatically varies the duty
cycle of the switch's on-time in response to changing load
conditions, the PWM controller will always have an opti­mized waveform for a steady-state load. This translates to
very good efficiency at high currents and minimal ripple on
the output. Ripple is due to the output cap constantly accept­ing and storing the charge received from the inductor, and
delivering charge as required by the load. The “pumping”
action of the switch produces a sawtooth-shaped voltage as
seen by the output.

The other key advantage of the PWM type controllers over
pulse frequency modulated (PFM) types is that the radiated
noise due to the switching transients will always occur at
(fixed) switching frequency. Many applications do not care
much about switching noise, but certain types of applica­tions, especially communication equipment, need to mini­mize the high frequency interference within their system as
much as possible. Use of the PWM converter in those cases
is desirable.

PFM Mode Operation

For light loads the ILC6363 can be switched to PFM. This
technique conserves power by only switching the output if
the current drain requires it. As shown in the Figure 5, the
waveform actually skips pulses depending on the power
needed by the output. This technique is also called “pulse
skipping” because of this characteristic.

In the ILC6363, the switchover from PWM to PFM mode is
determined by the user to improve efficiency and conserve
power.

The Dual PWM/PFM mode architecture was designed spe­cifically for applications such as wireless communications,
which need the spectral predictability of a PWM-type
DC-DC converter, yet also need the highest efficiencies
possible, especially in Standby mode.

REV. 1.3.5 5/21/02 5

ILC6363 PRODUCT SPECIFICATION

Switch Waveform

V

SET

V

OUT

Figure 5. PFM Waveform

Other Considerations

The other limitation of PWM techniques is that, while the
fundamental switching frequency is easier to filter out since
it's constant, the higher order harmonics of PWM will be
present and may have to be filtered out, as well. An y filtering
requirements, though, will vary by application and by actual
system design and layout, so generalizations in this area are
difficult, at best.

However, PWM control for boost DC-DC conversion is
widely used, especially in audio-noise sensitive applications
or applications requiring strict filtering of the high frequency
components.

Low Battery Detector

The ILC6363's low battery detector is a based on a CMOS
comparator. The negative input of the comparator is tied to
an internal 1.25V (nominal) reference, V
input is the LBI/SD pin. It uses a simple potential divider
arrangement with two resistors to set the LBI threshold as
shown in Figure 6. The input bias current of the LBI pin is
only 200nA. This means that the resistor values R1 and R2
can be set quite high. The formula for setting the LBI
threshold is:

. The positive

REF

V

IN

R5

R6

LBI/SD

3

2

+

-

1.25V
Internal
Reference

GND7

Shutdown

DELAY

100ms

ILC6363

R

6

LBO

3.3V

PU

Figure 6. Low Battery Detector

The output of the low battery detector is an open drain
capable of sinking 2mA. A 10kΩ pull-up resistor is
recommended on this output.

For V

< 1.25V

LBI

The low battery detector can also be configured for voltages
<1.25V by bootstrapping the LBI input from V

OUT

. The

circuitry for this is shown in Figure 7.

ILC6363

R2

V

IN

R1

3

LBI/SD

Figure 7. V

+

-

1.25V
Internal
Reference

GND7

< 1.25V

LBI

8

V

OUT

VLBI = VREF x (1+R5/R6)

Since the LBI input current is negligible (<200nA), this
equation is derived by applying voltage divider formula
across R6. A typical value for R6 is 100kΩ.

R5 = 100kΩ x [(VLBI/VREF) -1],
where VREF=1.25V (nom.)

The LBI detector has a built in delay of 120ms. In order to
get a valid low-battery-output (LBO) signal, the input volt­age must be lower than the low-battery-input (LBI) threshold
for a duration greater than the low battery hold time
(t

hold(LBI)

) of 120msec. This feature eliminates false trigger­ing due to voltage transients at the battery terminal caused by
high frequency switching currents.

The following equation is used when VIN is lower than

1.25V:

R1 = R2 x [(V
where V

= 1.25V (nom.)

REF

– VIN) / (V

REF

OUT

– V

REF

)],

This equation can also be derived using voltage divider
formula across R2. A typical value for R2 is 100kΩ.

Shut Down

The LBI pin is shared with the shutdown pin. A low voltage
(<0.4V) will put the ILC6363 into a power down state. The
simplest way to implement this is with an FET across R6 as
shown in Figure 8. Note that when the device is not in PWM
mode or is in shutdown the low battery detector does not
operate.

6 REV. 1.3.5 5/21/02

PRODUCT SPECIFICATION ILC6363

When the ILC6363 is shut down, the synchronous rectifier
disconnects the output from the input. This ensures that there
is only leakage (IIN < 1µA typical) from the input to the out­put so that the battery is not drained when the ILC6363 is
shut down.

V

IN

2

ILC6363

3

LBI/SD

7 GND

ON/OFF

R5

R6

Figure 8. Shut Down Control

Power Good Output (POK)

The POK output of the ILC6363 indicates when V
within the regulation tolerance of the set output voltage.
POK output is an open drain device output capable of sink­ing 2mA. It will remain pulled low until the output voltage
has risen to typically 95% of the specified V

OUT

pull-up resistor must be connected from the POK output
(pin 5 of ILC6363CIR-XX) to either ILC6363’s output or to
some other system voltage source.

is

OUT

. Note that a

Adjustable Output Voltage Selection

The ILC6363-ADJ allows the output voltage to be set using
a potential divider. The formula for setting the adjustable
output voltage is;

V

= VFB x (1+R1/R2), R1+R2 ≤ 100kΩ

OUT

1A Schottky Diodes

-V

0.01µF

0.01µF

L

V

IN

1
2

ILC6363

X

L

IN

V

Figure 10. Negative Output Voltage

External Component Selection

Inductors

The ILC6363 is designed to work with a 15µH inductor in
most applications. There are several vendors who supply
standard surface mount inductors to this value. Suggested
suppliers are shown in table 1. Higher values of inductance
will improve efficienc y , but will reduce peak inductor current
and consequently ripple and noise, but will also limit output
current.

Vendor Part Number Contact

Coilcraft D03316P-153

D01608C-153

muRata LQH4N150K

LQH3C150K

Sumida CDR74B-150MC

CD43-150
CD54-150

TDK NLC453232T-150K [phone]

[phone]

[phone]

[phone]

Where VFB is the threshold set which is 1.25V nominal.

PFM

ILC6363-ADJ

1

2

V

IN

3

LBI/SD

4

SEL

L

X

MSOP-8

V

OUT

GND

LBO

V

V

8

+

7

6

5

FB

V

OUT

OUT

100µF

C

OUT

R1

R2

= 1.25 (1+R1/R2)

C

IN

100µF

IN

V

1 to 3-cell R5

ON

OFF

L

15mH

R6

PWM

Figure 9. Adjustable Voltage Configuration

Negative V oltage Output

It is possible to generate a negative output voltage as a
secondary supply using the ILC6363. This negative voltage
may be useful in some applications where a negative bias
voltage at low current is required.

Capacitors

Input Capacitor

The input capacitor is necessary to minimize the peak
current drawn from the battery. Typically a 100µF tantalum
capacitor is recommended. Low equivalent series resistance
(ESR) capacitors will help to minimize battery voltage
ripple.

Output Capacitor

Low ESR capacitors should be used at the output of the
ILC6363 to minimize output ripple. The high switching
speeds and fast changes in the output capacitor current, mean
that the equivalent series impedance of the capacitor can
contribute greatly to the output ripple. In order to minimize
these effects choose an output capacitor with less than 10nH
of equivalent series inductance (ESL) and less than 100mΩ
of equivalent series resistance (ESR). Typically these
characteristics are met with ceramic capacitors, but may also
be met with certain types of tantalum capacitors. Suitable
vendors are shown in the following table.

REV. 1.3.5 5/21/02 7

PRODUCT SPECIFICATION ILC6363

Description Vendor Contact

T495 series tantalum Kemet [phone]
595D series tantalum Sprague [phone]
TAJ, TPS series

AVX [phone]

tantalum
X5R Ceramic

X7R Ceramic

TDK [phone]
AVX [phone]
muRata www.murata.com

Layout and Grounding
Considerations

High frequency switching and large peak currents means
PCB design for DC-DC converters requires careful
consideration. As a general rule place the DC-DC converter
circuitry well away from any sensitive RF or analog compo­nents. The layout of the DC-DC converters and its external
components are also based on some simple rules to minimize
EMI and output voltage ripple.

Layout

1. Place all power components, ILC6363, inductor, input

capacitor and output capacitor as close together as
possible.

2. Keep the output capacitor as close to the ILC6363 as

possible with very short traces to the V
pins. Typically it should be within 0.25 inches or 6mm.

and GND

OUT

3. Keep the traces for the power components wide,
typically >50mil or 1.25mm.

4. Place the external networks for LBI and VFB close to
the ILC6363, but away from the power components as
far as possible.

Grounding

1. Use a star grounding system with separate traces for
the power ground and the low power signals such as
LBI/SD
the power supply enters the PCB.

2. On multilayer boards use component side copper for
grounding around the ILC6363 and connect back to a
quiet ground plane using vias.

and VFB. The star should radiate from where

C

IN

100µF

15L1µH

V

IN

ON/OFF

PWM

PFM

Figure 11. Recommended Application Circuit

Schematic for ILC6363CIR-ADJ

ILC6363

1

L

X

V

OUT

2

V

IN

GND

3

LBI/SD

LBO

4

SEL

V

FB

Local "Quiet" Ground

Power Ground

8

OUT

C

+

100µF

7

6

5

R1

R2

V

R3

OUT

Load

1

2

V

IN

3

LBI

4

SEL

U1

ILC6363ADJ

X

L

GND

POK/VFB

V

LBO

OUT

8

C1

100µF

7

6

5

R3

10K

V

OUT

R1

LBO

VFB

R2

PWM

PFM

SEL

GND

U1

ILC6363XX

L1

100µF

C2

IN

V

15µH

ON

OFF

1

2

VIN

3

LBI

4

SEL

L

X

OUT

V

GND

LBO

POK/VFB

8

C1

100µF

7

6

5

R3

10K

R1
10K

VOUT

LBO

POK

V

IN

PWM

PFM

C2

SEL

GND

L1

100µF

15µH

ON

OFF

NOTE: R1 and R2 are user determined values to set

V

OUT

= VFB(1+R1/R2)

R1+R2 ≤ 100kΩ

REV. 1.3.5 5/21/02 8

ILC6363 PRODUCT SPECIFICATION

Evaluation Board Parts List for Printed Circuit Board Shown on the Previous Page

Label Part Number Manufacturer Description

U1 ILC6363CIR-ADJ Fairchild Semiconductor DC-DC converter
C GRM44-1 X5R 107K 6.3 muRata 100µF, ceramic capacitor
L1 LQS66C150M04 muRata 15µH, 1.3A
R1 and R2 — Dale, Panasonic User determined values
R3 — Dale, Panasonic 10kΩ, 1/10W, SMT

Label Part Number Manufacturer Description

U1 ILC6363CIR-XX Fairchild Semiconductor DC-DC converter
C GRM44-1 X5R 107K 6.3 muRata 100µF, ceramic capacitor
L1 LQS66CA150M04 muRata 15µH, 1.3A
R1 and R3 - Dale, Panasonic 10kΩ, 1/10W, SMT

9 REV. 1.3.5 5/21/02

ILC6363 PRODUCT SPECIFICATION

Typical Performance Characteristics ILC6363CIR-ADJ

Unless otherwise specified: TA = 25°C, CIN = 100µF, C

= 100µF, L = 15µH, V

OUT

OUT

= 3.6V

Efficiency vs Output Current (PFM Mode)

100

95

VIN=3.4V

VIN=2.8V

VIN=3.2V

VIN=3V

90

I

OUT

VIN=3.6V

VIN=4V

VIN=4.2V

30 40 50

(mA)

85

VIN=3.8V

Efficiency (%)

80

75

01020

Efficiency vs Output Current (PWM Mode)

100

95

90

VIN=3.6V

85

VIN=3.8V

Efficiency (%)

80

VIN=4.2V

75

0 100 200

VIN=3.4V

(mA)

I

OUT

VIN=3.2V

VIN=3.0V

VIN=2.8V

VIN=4.0V

300 400 500

Efficiency vs Input Voltage (PFM Mode)

98

I

96
94

OUT

=50mA

I

OUT

I

OUT

=40mA

=10mA

92
90

I

88
86

I

OUT

84

Efficiency (%)

OUT

=20mA

=5mA

82
80
78

2.8 3.0 3.2

3.4 3.6 3.8 4.0 4.2
V

(V)

IN

Efficiency vs Input Voltage (PWM Mode)

98

I

=100mA

OUT

94

I

=50mA

OUT

90

86

Efficiency (%)

I

OUT

82

78

2.8 3.0 3.2

=500mA

I

OUT

3.4 3.6 3.8 4.0 4.2

=400mA

(V)

V

IN

I

OUT

=200mA

Line Regulation Load Regulation

3.7

I

OUT

3.6

3.5

3.4

(V)

I

=50mA

OUT

3.3

OUT

V

I

=200mA

OUT

3.2

3.1

3.0

2.8 3.0 3.2

=3mA

V

=(nom)=3.6V

OUT

I

=300mA

OUT

I

=400mA

OUT

I

=500mA

OUT

3.4 3.6 3.8 4.0 4.2
(V)

V

IN

3.7

VIN=4.0V

VIN=4.2V

3.6

3.5

3.4

(V)

3.3

OUT

V

VIN=2.8V

3.2

3.1

3.0
0 50 100 150 200 250 300 350400 450 500

VIN=3.8V

VIN=3.6V

I

OUT

VIN=3.4V

VIN=3.2V

VIN=3.0V

(mA)

10 REV. 1.3.5 5/21/02

PRODUCT SPECIFICATION ILC6363

Typical Performance Characteristics ILC6363CIR-ADJ

Unless otherwise specified: TA = 25°C, CIN = 100µF, C

= 100µF, L = 15µH, V

OUT

OUT

= 3.6V

Output Ripple Voltage vs Input Voltage

160
140

120
100

I

=0mA, 10mA

OUT

80
60

I

=100mA I

OUT

40

Output Ripple (mVpp)

20

I

=50mA

OUT

0

2.8 3.0 3.2

4.6

4.2

(V)

OUT

V

3.8

I

=250mA

2.8

OUT

I

=500mA

OUT

3.4 4.0 4.6 5.2

3.6

3.4

3.4 3.6 3.8 4.0 4.2
V

IN

VIN vs V

V

IN

(V)

(V)

OUT

I

=500mA

OUT

I

OUT

I

=0mA, 10mA

OUT

I

OUT

50mA

=200mA

=400mA

Ripple Current vs Input Voltage

160
140

120

I

=0mA

OUT

100

I

=10mA

OUT

80
60

OUT

=100mA

40

Ripple Current (mApp)

20

0

2.8 3.0 3.2

Line Transient Response

3.8

(mV)

IN

2.8

+50

(mV) V

0

OUT

-50

V

I

OUT

=400mA

I

OUT

I

OUT

I

OUT

I

OUT

=200mA

=500mA

=100mA

=50mA

3.4 3.6 3.8 4.0 4.2
(V)

V

IN

500µs/div

PWM Mode Load Switching Waveform

OUT

V

AC Coupled

Current

Inductor

PFM Mode Load Switching Waveform

OUT

V

AC Coupled

Current

Inductor

250µs/div1µs/div

REV. 1.3.5 5/21/02 11

ILC6363 PRODUCT SPECIFICATION

Typical Performance Characteristics ILC6363CIR-ADJ

Unless otherwise specified: TA = 25°C, CIN = 100µF, C

V

vs Temperature

OUT

3.7

V

=3.6V (nominal)

OUT

VIN=4.2V, I

LOAD

=200mA

VIN=2.8V, I

LOAD

=200mA

3.6

(V)

3.5

OUT

V

VIN=3.6V, I

VIN=3.0V, I

LOAD

=200mA

LOAD

VIN=4.2V, I

VIN=4.2V, I

=500mA

LOAD

LOAD

=500mA

=500mA

3.4

3.3

-40-30-20

VIN=2.8V, I

-100102030405060708090

LOAD

=500mA

Temperature °C

< V

Low Battery Output (V

IN

for Less than 100ms)

TH

10kΩ pull-up resistor from LBO to 3V supply

4
3

2

VIN=1.2V

I

=40mA

1

OUT

LBO (V)

0

1.5

1.0

(V)

IN

V

0.5
0

20ms/div→

= 100µF, L = 15µH, V

OUT

Low Battery Output (V

10kΩ pull-up resistor from LBO to 3V supply

4
3

2
1

LBO (V)

0

1.5

1.0

(V)

IN

V

0.5
0

3.00

2.40

I

1.80

1.20

0.60

Output Noise Voltage (mVrms)

0
100 1k 10k 100k 1M

OUT

VIN=1.2V

I

=40mA

OUT

Spectral Noise Plot

VIN=2.8V

=68mA

OUT

Fundamental:

345kHz/2.7mVrms

First Harmonic

690kHz/0.66mVrms

= 3.6V (nominal)

< V

IN

for Greater than 100ms)

TH

20ms/div→

Freq (Hz)

Spectral Noise Plot

-42

-62

VIN=2.8V

I

OUT

=66mA

-82

-102

345kHz IF Band:2.6µVrms

-122

Output Noise Voltage (dBVrms)

-142
255k 335k 415k 495k 575k 655k

Freq (Hz)

12 REV. 1.3.5 5/21/02

PRODUCT SPECIFICATION ILC6363

Mechanical Dimensions

8 Lead MSOP

0.122 (3.1)

0.114 (2.9)

Pin 1 identifier

0.016 (.40)

0.01 (.25)

0.122 (3.1)

0.114 (2.9)

0.025 (.65)BSC

0.043 (1.1)

0.031 (.80)

0.006 (.15)

0.004 (.05)

0.244 (5.15)

0.228 (4.65)

0.009 (.23)

0.005 (.13)

0.027 (.70)

0.016 (.40)

(0-10)°

REV. 1.3.5 5/21/02 13

ILC6363 PRODUCT SPECIFICATION

Ordering Information for Ta = -40°C to +85°C, MSOP-8 Package

Part Number Output Voltage

ILC6363CIR50X 5.0
ILC6363CIRADJX Adjustable

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:

1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with

2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.

instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.

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5/21/02 0.0m 003

2002 Fairchild Semiconductor Corporation

Stock#DS30006363