ILC6360CIR-36 IMPALA [Impala Linear Corporation], ILC6360CIR-36 Datasheet - Page 8

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ILC6360CIR-36

Manufacturer Part Number
ILC6360CIR-36
Description
STEP-UP/STEP DOWN DC-DC CONVERTER FOR 1-CELL LITHIUM-LON BATTERIES
Manufacturer
IMPALA [Impala Linear Corporation]
Datasheet
Power Good Output (POK)
The power good output of the ILC6360 indicates when V
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 V
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:
V
Where V
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.
ILC6360 1.1
EXTERNAL COMPONENT SELECTION
10 F
C
OUT
IN
Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries
+
Impala Linear Corporation
= V
ON
FB
V
OFF
FB
IN
is the feedback voltage which is 1.25V nominal.
x (1+R1/R2)
ON/OFF
Adjustable Voltage Configuration
(Connect to GND if unused)
Fig 5: Shut Down Control
15 H
Ext Sync
L
1
2
3
4
R5
R6
ILC6360CIR-ADJ
V
SYNC
LBI/SD
IN
L
X
LBI/SD
GND
LBO
V
V
OUT
3
FB
ILC6360
8
7
6
5
OUT
2 V
7 GND
.
IN
10µF
+
(408) 574-3939
C
OUT
+
100µF
R1
R2
V
OUT
OUT
Table 1
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
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
Table 2
Capacitors
www.impalalinear.com
Coilcraft
muRata
Sumida
TDK
T495 series tantalum
595D series tantalum
TAJ, TPS series tantalum
X7R Ceramic
Vendor
Description
DO330P-153
D03316P-153
D01608C-153
LQH4N150K
LQH3C150K
CDR74B-150MC
CD43-150
CD54-150
NLC453232T-150K
of equivalent series resistance (ESR).
Part No.
Sprague
Vendor
Kemet
Yuden
Taiyo
TDK
AVX
AVX
(847) 639-6400
www.coilcraft.com
(814) 237-1431
www.murata.com
(847) 956-0666
www.japanlink.com/sumida
(847) 390-4373
www.tdk.co.jp
Jan 1999
Contact
(864) 963-6300
(603) 224-1961
(803) 946-0690
(847) 390-4373
(803) 946-0690
(408) 573-4150
Contact
8

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