ilc6380 ETC-unknow, ilc6380 Datasheet

ilc6380

Manufacturer Part Number

ilc6380

Description

Sot-89 Step-up Dual-mode Switcher With Shutdown

Manufacturer

ETC-unknow

Datasheet

1.ILC6380.pdf (6 pages)

Current page: 1 of 6
Download datasheet (187Kb)

100mA boost converter in 5-lead SOT-89 package using

both PFM and PWM conversion techniques.

operation the ILC6380 runs in PWM mode running at one of

three fixed frequencies. At light loads the ILC6380 senses

when the duty cycle drops to approximately 10%, and auto-

matically switches into a power-saving PFM switching tech-

nique. This maintains high efficiencies both at full load and

in system sleep conditions.

Only 3 external components are needed to complete the

switcher design, and standard voltage options of 2.5, 3.3,

and 5.0V at ±2.5% accuracy feature on-chip phase com-

pensation and soft-start design.

ILC6381 drives an external transistor for higher current switch-

er design, with all of the features and benefits of the ILC6380.

ILC6380/1 1.4

General Description

Block Diagram

Pin Package Configurations

ILC6380/81

SOT-89 Step-up Dual-Mode Switcher with Shutdown

Impala Linear Corporation

EXT

is i nternall y connected to the V

N/C

SOT -89-5

Impala Linear Corporation

(TOP VI EW)

CHI P ENABLE

O UT

BUFFER

PWM/ PFM Controll ed

50/ 100/180KHz

OSC

L X

LIMI TER

O UT

pi n.

Slow Start

Phase com p

N/C

S S

SOT -89-5

r e f

(TOP VI EW)

O UT

EXT

(408) 574-3939

In normal

OUT

! 85% efficiency at 50mA

! Start-up voltages as low as 900mV

! ±2.5% accurate outputs

! Complete switcher design with only 3 external

! 50, 100 and 180kHz switching frequency versions

! Shutdown to 0.5µA I

! External transistor option allows several hundred

! Cellular Phones, Pagers

! Portable Cameras and Video Recorders

! Palmtops and PDAs

www.impalalinear.com

Applications

Package Features

ILC6380CP-25

ILC6380CP-33

ILC6380CP-50

ILC6380CP-25

ILC6380CP-33

ILC6380CP-50

ILC6380CP-25

ILC6380CP-33

ILC6380CP-50

ILC6381CP-25

ILC6381CP-33

ILC6381CP-50

ILC6381BP-25

ILC6381BP-33

ILC6381BP-50

ILC6381AP-25

ILC6381AP-33

ILC6381AP-50

components

available

milliamp switcher design

1000 per reel, orientation right for SOT-89

Standard product offering comes in tape & reel, quantity

Ordering Information

2.5V ± 2.5%@50kHz

3.3V ± 2.5%@50kHz

5.0V ± 2.5%@50khz

2.5V ± 2.5%@100kHz

3.3V ± 2.5%@100kHz

5.0V ± 2.5%@100kHz

2.5V ± 2.5%@180kHz

3.3V ± 2.5%@180kHz

5.0V ± 2.5%@180kHz

2.5V ± 2.5%@50kHz, external xtor

3.3V ± 2.5%@50kHz, external xtor

5.0V ± 2.5%@50kHz, external xtor

2.5V ± 2.5%@100kHz, external xtor

3.3V ± 2.5%@100kHz, external xtor

5.0V ± 2.5%@100kHz, external xtor

2.5V ± 2.5%@180kHz, external xtor

3.3V ± 2.5%@180kHz, external xtor

5.0V ± 2.5%@180kHz, external xtor

Sept 1999

Related parts for ilc6380

ilc6380 Summary of contents

Page 1

... Only 3 external components are needed to complete the switcher design, and standard voltage options of 2.5, 3.3, and 5.0V at ±2.5% accuracy feature on-chip phase com- pensation and soft-start design. ILC6381 drives an external transistor for higher current switch- er design, with all of the features and benefits of the ILC6380. Block Diagram ...

Page 2

... The current that is actually provided by external VIN source is represented by “No-Load Input Current(IIN)” 3. Switching frequency is determined by delay time of internal comparator to turn Lx “off”, and minimum “on” time as determined by MAXDTY spec. Impala Linear Corporation ILC6380/1 1.4 = 25°C) A Symbol V ...

Page 3

... SOT-89 Step-up Dual-Mode Switcher with Shutdown Electrical Characteristics ILC6380BP- 5.0V 100kHz T = 25°C. Unless otherwise specified, V OUT OSC A Parameter Output Voltage Input Voltage Oscillation Startup Voltage Operation Startup Voltage Supply Current 1 (See Note 2) Supply Current 2 EXT “High” On-Resistance EXT “Low” On-Resistance ...

Page 4

... In the ILC6380 and ILC6381, this switchover is internally set the point where the PWM waveform hits approximately 10% duty cycle. So the PFM mode is running at 10% duty cycle at the rated frequency ...

Page 5

... For the ILC6381, using an external transistor, the use of a 47mH inductor is recommended based on our experience with the part. Note that these values are recommended for both 50kHz and 100kHz operation. If using the ILC6380 or ILC6381 at 180kHz, the inductor size can be reduced to approximately half of these stated values. ...

Page 6

... INPUT CURRENT vs. INPUT VOLTAGE ILC6380CP- 100µ 47µF (Tantalum (no load) OUT 1.0 1.2 1.4 INPUT VOLTAGE V Impala Linear Corporation ILC6380/1 1.4 General conditions for all curves V = 2.0V IN 120 160 200 (mA) OUT 1.6 1.8 2.0 (V) IN (408) 574-3939 www.impalalinear.com EFFICIENCY vs. OUTPUT CURRENT ILC6380CP-30 100 80 ...

Related keywords

ilc6380 datasheet
ilc6380 data sheet
ilc6380 pdf datasheet
ilc6380 component
ilc6380 part
ilc6380 distributor
ilc6380 RoHS
ilc6380 datasheet download