ilc6363 Fairchild Semiconductor, ilc6363 Datasheet

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ilc6363

Manufacturer Part Number
ilc6363
Description
Step-up Dc-dc Converter One-cell Lithium-ion Batteries
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
ilc6363CIR-ADJ
Manufacturer:
FAIRCHIL
Quantity:
77
Company:
Part Number:
ilc6363CIR33X
Quantity:
4 000
Company:
Part Number:
ilc6363CIR50X
Quantity:
3 800
Company:
Part Number:
ilc6363CIRADJX
Quantity:
20 000
Features
• ILC6363CIR-50: Fixed 5.0V output; custom voltages are
• ILC6363CIR-ADJ: Adjustable output to 6V maximum
• Capable of 500mA output current
• Peak efficiency: > 90% at V
• No external diode is required (synchronous rectification)
• Battery input current of 300µA at no load
• True load disconnect from battery input in shutdown
• Oscillator frequency: 300kHz ±15%
• Low battery detector with 100ms transient rejection delay
• Power good output flag when V
• 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
Typical Circuit
ON
ILC6363
Step-Up DC-DC Converter for One-Cell Lithium-Ion
Batteries
2.7V to 4.2V
available upon request
V
(1µA)
V
OFF
IN
IN
= 3.6V
100 F
C
IN
+
R5
R6
15 H
PWM
L
PFM
1
2
3
4
OUT
ILC6363CIR-XX
V
SEL
LBI/SD
IN
OUT
L
Figure 1.
MSOP-8
= 3.6V, I
X
is in regulation
GND
LBO
POK
V
OUT
OUT
8
7
6
5
= 300mA,
10 F
+
Low Battery
Detector Output
Power Good Output
(Fixed V
C
OUT
+
100 F
OUT
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.
only)
V
OUT
90
80
70
Optimized to Maximize Battery Life
www.fairchildsemi.com
Time
REV. 1.3.5 5/21/02
4.2
3.6
3.0

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ilc6363 Summary of contents

Page 1

... 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 ...

Page 2

... SEL MSOP MSOP (TOP VIEW) (TOP VIEW) ILC6363CIR-ADJ Pin Function Description 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 ...

Page 3

... PRODUCT SPECIFICATION Electrical Characteristics ILC6363CIR-50 in PFM Mode Unless otherwise specified, all limits are at V BOLDFACE type indicate limits over the specified operating temperature range. (Note 2) Parameter Symbol Output Voltage V OUT(nom) Maximum Output I OUT Current Load Regulation V OUT V OUT No Load Battery ...

Page 4

... POK output leakage Current I L(POK) POK threshold V TH(POK POK hysteresis V HYST Feedback voltage V FB (ILC6363CIR-ADJ only) Output voltage adjustment V OUT(ADJ) min range (ILC6363CIR-ADJ only) V OUT(ADJ) max Minimum startup voltage V IN(start) Input voltage range V IN Battery input current in load I IN(SD) disconnect mode Switch on resistance R ds(on) ...

Page 5

... 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 SW2 ...

Page 6

... 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 ...

Page 7

... When the ILC6363 is shut down, the synchronous rectifier disconnects the output from the input. This ensures that there is only leakage (I < 1µA typical) from the input to the out- IN put so that the battery is not drained when the ILC6363 is shut down LBI/SD ...

Page 8

... 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. U1 ILC6363XX L1 ...

Page 9

... Evaluation Board Parts List for Printed Circuit Board Shown on the Previous Page Label Part Number U1 ILC6363CIR-ADJ C GRM44-1 X5R 107K 6.3 L1 LQS66C150M04 R1 and R2 — R3 — Label Part Number U1 ILC6363CIR-XX C GRM44-1 X5R 107K 6.3 L1 LQS66CA150M04 R1 and Manufacturer Fairchild Semiconductor DC-DC converter muRata 100µF, ceramic capacitor muRata 15µH, 1.3A Dale, Panasonic ...

Page 10

... ILC6363 Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified 25° Efficiency vs Output Current (PFM Mode) 100 V =3.4V V =3. =2. =3. =3. = (mA) OUT Efficiency vs Output Current (PWM Mode) 100 V =3.4V V =3. =3.6V IN ...

Page 11

... PRODUCT SPECIFICATION Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified 25° Output Ripple Voltage vs Input Voltage 160 I OUT 140 120 100 I =0mA, 10mA OUT 80 I =100mA OUT =50mA OUT 0 2.8 3.0 3.2 3.4 3 OUT 4.6 4.2 3.8 I =250mA OUT 3.6 I =500mA OUT 3 ...

Page 12

... ILC6363 Typical Performance Characteristics ILC6363CIR-ADJ Unless otherwise specified 25° Temperature OUT 3.7 V =3.6V (nominal) OUT V =2.8V =4.2V, I =200mA IN LOAD 3.6 V =4.2V =3.6V, I =200mA IN LOAD 3.5 V =4.2V LOAD V =3.0V, I =500mA IN LOAD 3.4 V =2.8V, I =500mA IN LOAD 3.3 -40 -30 -20 - Temperature C Low Battery Output (V < ...

Page 13

... PRODUCT SPECIFICATION Mechanical Dimensions 8 Lead MSOP 0.122 (3.1) 0.114 (2.9) Pin 1 identifier 0.006 (.15) 0.016 (.40) 0.004 (.05) 0.01 (.25) REV. 1.3.5 5/21/02 0.122 (3.1) 0.244 (5.15) 0.114 (2.9) 0.228 (4.65) 0.025 (.65)BSC 0.009 (.23) 0.005 (.13) 0.043 (1.1) 0.031 (.80) 0.027 (.70) 0.016 (.40) ILC6363 (0-10)° 13 ...

Page 14

... 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; ...

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