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ILC6360 데이터시트(PDF) 8 Page - Impala Linear Corporation

부품명 ILC6360
상세설명  STEP-UP/STEP DOWN DC-DC CONVERTER FOR 1-CELL LITHIUM-LON BATTERIES
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제조업체  IMPALA [Impala Linear Corporation]
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ILC6360 데이터시트(HTML) 8 Page - Impala Linear Corporation

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Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries
Impala Linear Corporation
8
(408) 574-3939
www.impalalinear.com
Jan 1999
ILC6360 1.1
Power Good Output (POK)
The power good output of the ILC6360 indicates when VOUT
is within the regulation tolerance of the set output voltage.
POK output is an open drain device capable of sinking
2mA. It will remain pulled low until the output voltage has
risen to typically 95% of the specified VOUT.
Adjustable Output Voltage Selection
The ILC6360-ADJ allows the output voltage to be set using
a potential divider. The formula for setting the adjustable
output voltage is:
VOUT = VFB x (1+R1/R2)
Where VFB is the feedback voltage which is 1.25V nominal.
Inductors
The ILC6360 is designed to work with a 15µH inductor in
most applications. There are several vendors who supply
standard surface mount inductors for this value. Suggested
inductor manufacturers are shown in table 1. Higher values
of inductance will improve efficiency, but will reduce peak
inductor current and consequently ripple and noise, but will
also limit output current.
Input Capacitor
The input capacitor is necessary to minimize the peak cur-
rent 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
ILC6360 to minimize output ripple. The high switching
speeds and fast changes in the output capacitor current,
mean that the equivalent series resistance of the capacitor
can contribute greatly to the output ripple. In order to mini-
mize these effects choose an output capacitor with less
than 10nH of equivalent series inductance (ESL) and less
than 100m
Ω of equivalent series resistance (ESR).
Typically these characteristics are met with ceramic capac-
itors, but may also be met with certain types of tantalum
capacitors. Suitable capacitor manufacturers are shown in
table 2. A parallel combination of 10µF and 100µF is rec-
ommended at the output
ON/OFF
R5
R6
LBI/SD
3
ILC6360
2 VIN
7 GND
Fig 5: Shut Down Control
15
µH
Ext Sync
(Connect to GND if unused)
L
C
OUT
ILC6360CIR-ADJ
L
X
V
IN
LBI/SD
SYNC
GND
LBO
V
FB
V
OUT
V
OUT
1
2
3
4
8
7
6
5
+
ON
OFF
V
IN
+
10
µF
C
IN
+
R1
R2
10µF
100µF
Adjustable Voltage Configuration
Vendor
Part No.
Contact
Coilcraft
DO330P-153
D03316P-153
D01608C-153
(847) 639-6400
www.coilcraft.com
muRata
LQH4N150K
LQH3C150K
(814) 237-1431
www.murata.com
Sumida
CDR74B-150MC
CD43-150
CD54-150
(847) 956-0666
www.japanlink.com/sumida
TDK
NLC453232T-150K
(847) 390-4373
www.tdk.co.jp
Description
Vendor
Contact
T495 series tantalum
Kemet
(864) 963-6300
595D series tantalum
Sprague
(603) 224-1961
TAJ, TPS series tantalum
AVX
(803) 946-0690
TDK
(847) 390-4373
AVX
(803) 946-0690
X7R Ceramic
Taiyo
Yuden
(408) 573-4150
Table 1
Table 2
EXTERNAL COMPONENT SELECTION
Capacitors


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