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

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

1.ILC6360CIR-36.pdf (14 pages)

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The ILC6360 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

ILC6360 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 ILC6360’s input

voltage exceeds the output voltage by more than 800mV,

the output will begin to track the input linearly.

Configured as a 300kHz, fixed frequency PWM boost con-

verter, the ILC6360 performs the buck operation by seam-

lessly switching to PFM, when the output voltage rises near

the positive range of regulation. However, since the transition

point between PWM and PFM mode is dependent upon both

line, and load regulation, under certain conditions, regulation

will remain in PWM mode even in the buck mode of operation.

The ILC6360 is unconditionally stable with no external com-

pensation; the sizes of the input and output capacitors influ-

ence the ripple on the input, and output voltages. Since the

ILC6360 has an internal synchronous rectifier, the standard

fixed voltage version requires minimal external components:

an inductor, an input capacitor, and an output capacitor. An

additional 10µF ceramic output capacitor will help reduce

output ripple voltage.

Other features include an external sync input for synchro-

nizing the PWM frequency, low battery input detector with

100ms transient rejection delay built-in, and, a power good

indicator useful as a system power on reset.

ILC6360 1.1

General Description

Step-Up/Step Down DC-DC Converter for

1-Cell Lithium-Ion Batteries

ILC6360

Impala Linear Corporation

Typical Performance Characteristics for 1-cell Li-ion

Impala Linear Corporation

Optimized to Maximize Battery Life

Typical Li-ion Battery Discharge Curve

ILC6360 Efficiency @ I

Time

OUT

= 300mA

(408) 574-3939

4.2

3.6

3.0

• ILC6360CIR-36: Fixed 3.6V output; custom

• ILC6360CIR-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 250mA at no load

• True load disconnect from battery input in shutdown (1mA)

• OSC freq: 300kHz ±15%

• External freq synchronization from 150kHz to 500kHz

• Low battery detector with 100ms transient rejection delay

• Power good output flag when V

• MSOP-8 package

• Cellular phones

• Palmtops, PDAs and portable electronics

• Equipment using single Lithium-Ion batteries

Applications

2.7V to 4.2V

www.impalalinear.com

Features

voltages possible

OFF

IN =

100 F

3.6V

(Note: R5 and R6 are required only if LBI feature is used)

(Connect to GND if unused)

Typical Step-up/Step-down Application Circuit

15 H

Ext Sync

Patent Pending

ILC6360CIR-ADJ

SYNC

LBI/SD

MSOP-8

OUT

GND

LBO

OUT

= .6V,I

is in regulation

Jan 1999

OUT

10µF

Low Battery

Detector Output

Power Good Output

OUT

100µF

= 300mA,

3.6V/500mA

OUT

Related parts for ILC6360CIR-36

ILC6360CIR-36 Summary of contents

Page 1

... Typical Li-ion Battery Discharge Curve 70 Time Typical Performance Characteristics for 1-cell Li-ion Impala Linear Corporation ILC6360 1.1 Features • ILC6360CIR-36: Fixed 3.6V output; custom voltages possible • ILC6360CIR-ADJ: Adjustable output to 6V maximum • Capable of 500mA output current • Peak efficiency: > 90 • ...

Page 2

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Pin Functions ILC6360CIR-36 Pin Number Pin Name LBI/SD 4 SYNC 5 POK (ILC6382CIR-XX (ILC6382CIR-ADJ) 6 LBO 7 GND 8 V OUT PIN-PACKAGE CONFIGURATIONS OUT GND LBO LBI/SD LBI/SD ...

Page 3

... Storage temperature Lead temperature (soldering 10 sec) Package thermal resistance Electrical Characteristics ILC6360CIR-36 and ILC6360CIR-ADJ Unless otherwise specified all limits are at T Test circuit of figure 2 for ILC6360-36 and test circuit of figure 9 for ILC6360-ADJ. BOLDFACE type indicates limits that apply over the full operating temperature range. Note 2. ...

Page 4

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Electrical Characteristics ILC6360CIR-36 and ILC6360CIR-ADJ (Continued) Unless otherwise specified all limits are 25° figure 2 for ILC6360-36 and test circuit of figure 9 for ILC6360-ADJ. BOLDFACE type indicates limits that apply over the full oper- ating temperature range ...

Page 5

Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries APPLICATIONS INFORMATION The ILC6360 performs both buck and boost DC-DC con- version by controlling the switch element as shown in the simplified circuit in figure 1 below. Fig. 1: Basic Circuit When the ...

Page 6

Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries At the start of one of the buck mode cycles, current starts to flow in the inductor. If the input voltage is greater than the output voltage, a normal PWM cycle will not ...

Page 7

Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries In the ILC6360, the switchover from PWM to PFM mode occurs when the PWM waveform drops to a low duty cycle. The low PWM duty cycle indicates to the controller that the load ...

Page 8

... 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 (1+R1/R2) OUT FB Where V is the feedback voltage which is 1.25V nominal. FB ILC6360CIR-ADJ ...

Page 9

... LBI/SD and V supply enters the PCB multilayer boards use component side copper for and GND pins. grounding around the ILC6360 and connect back to a OUT quiet ground plane using vias. ILC6360CIR-ADJ 100 ...

Page 10

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries OFF Evaluation Board Parts List For Printed Circuit Board Shown Above Label Part Number U1 ILC6360CIR-ADJ T495D107K010AS IN OUT C 2 2221Y106M250NT OUT L1 DO1608C-153 CDR74B-150MC R1 R2 R3, R4 Impala Linear Corporation ILC6360 1.1 Impala Linear Corp. ...

Page 11

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Typical Performance Characteristics ILC6360CIR-36 Unless otherwise specified 25° Efficiency vs Output Current (Light Load) 100 OUT Efficiency vs Input Voltage (Heavy Load) 100 3.6V IN ...

Page 12

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Typical Performance Characteristics ILC6360CIR-36 Unless otherwise specified 25° Output Ripple Voltage vs Input Voltage 160 140 120 100 I = 0mA, 10mA OUT 100mA OUT 50mA OUT 0 2.8 3.0 3.2 3 4.6 4.2 3 250mA OUT 3 ...

Page 13

... Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Typical Performance Characteristics ILC6360CIR-36 Unless otherwise specified 25° Temperature OUT 3 3.6V, (nominal) OUT V = 4.2V 200mA IN LOAD 3 3.6V 200mA IN LOAD 3 3.0V 500mA IN LOAD 3 2.8V LOAD 3.3 - -30 -20 - Temperature °C Low Battery Output (V < ...

Page 14

Step-Up/Step-Down DC-DC Converter for 1-Cell Lithium-Ion Batteries Package Dimensions MSOP-8 All dimensions in inches (mm) 0.118 ± 0.004 (3.00 ± 0.05) .020 TYP (0.5 TYP) 0.013 TYP. (0.3 TYP.) 0.004 ± 0.002 (0.1 ± 0.05) Devices sold by Impala Linear ...

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