ILC6370AP-25 IMPALA [Impala Linear Corporation], ILC6370AP-25 Datasheet

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ILC6370AP-25

Manufacturer Part Number
ILC6370AP-25
Description
SOT-89 STEP UP SWITCHING REGULATOR WITH SHUTDOWN
Manufacturer
IMPALA [Impala Linear Corporation]
Datasheet
1.ILC6370AP-25.pdf (8 pages)
50mA boost converter in 5-lead SOT-89 package. Only 3
external components are needed to complete the switcher
design, and frequency options of 50, 100, and 180kHz gives
the designer the ability to trade off system needs with
switcher design size.
87% max duty cycle gives conversion efficiencies of 85%.
Standard voltage options of 2.5V, 3.3V, and 5.0V at ±2.5%
accuracy feature on-chip phase compensation and soft-
start design.
ILC6371 drives an external transistor for higher current
switcher design, with all of the features and benefits of
the ILC6370.
ILC6370/1 1.3
General Description
Block Diagram
Pin-Package Configurations
ILC 6370/71
SOT-89 Step up Switching Regulator with Shutdown
L
V
EXT
CE
V
Impala Linear Corporation
X
SS
DD
is i nternall y connected to the V
V
N/C
SS
SOT -89-5
5
1
ILC6370
Impala Linear Corporation
(TOP VI EW)
CHIP ENABLE
V
O UT
2
BUFFER
P WM Co ntrol led
50/ 100/180KHz
L
CE
4
3
X
V
OSC
L X
LIMI TER
O UT
pi n.
Slow Start
P hase com p
V
N/C
V
S S
re f
SOT -89-5
1
5
ILC6371
(TOP VI EW)
+
-
V
O UT
2
V
DD
EXT
CE
4
3
(408) 574-3939
V
OUT
ILC6370CP-25
ILC6370CP-25
ILC6370CP-50
ILC6370BP-25
ILC6370BP-33
ILC6370BP-50
ILC6370AP-25
ILC6370AP-33
ILC6370AP-50
ILC6371CP-25
ILC6371CP-33
ILC6371CP-50
ILC6371BP-25
ILC6371BP-33
ILC6371BP-50
ILC6371AP-25
ILC6371AP-33
ILC6371AP-50
Standard Product offering comes in tape and reel,
quantity 1000 per reel, orientation right for SOT-89
! 85% efficiency at 50mA
! Start-up voltages as low as 900mV
! ±2.5% accurate outputs
! Complete switcher design with only 3 external components
! 50, 100 and 180kHz switching frequency versions available
! Shutdown to 0.5µA
! External transistor option allows several hundred milliamp
! Cellular Phones, Pagers
! Portable Cameras and Video Recorders
! Palmtops and PDAs
Applications
Features
www.impalalinear.com
switcher design
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
July 1999
1

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ILC6370AP-25 Summary of contents

Page 1

... External transistor option allows several hundred milliamp switcher design Applications ! Cellular Phones, Pagers ! Portable Cameras and Video Recorders ! Palmtops and PDAs ILC6370CP- ILC6370CP-25 ILC6370CP-50 V OUT ILC6370BP-25 ILC6370BP-33 ILC6370BP-50 - ILC6370AP-25 + ILC6370AP-33 ILC6370AP-50 ILC6371CP-25 ILC6371CP-33 ILC6371CP-50 ILC6371BP-25 ILC6371BP-33 V EXT ILC6371BP-50 SOT -89-5 ILC6371AP-25 (TOP VI EW) ILC6371AP-33 ...

Page 2

SOT-89 Step up Switching Regulator with Shutdown Absolute Maximum Ratings (T Parameter V Input Voltage Pin OUT CE Input Voltage Voltage on pin L X Current on pin L X Voltage on pin EXT Current pin EXT Continuous Total Power ...

Page 3

SOT-89 Step up Switching Regulator with Shutdown Electrical Characteristics ILC6370BP- 5.0V 100kHz, T OUT OSC Parameter Symbol CE “High” Current I CEH CE “Low” Current I CEL L Limit Voltage V X LXLMT Efficiency EFFI 1. ...

Page 4

SOT-89 Step up Switching Regulator with Shutdown Applications Circuits V Electrical Characteristics ILC6370BP- 5.0V 100kHz, T OUT OSC Parameter Slow Start Time Impala Linear Corporation ILC6370/1 1 ILC6370 Figure 1: ...

Page 5

SOT-89 Step up Switching Regulator with Shutdown Functions and Operation The ILC6370 performs boost DC-DC conversion by controlling the switch element shown in the circuit below. When the switch is closed, current is built up through the inductor. When the ...

Page 6

SOT-89 Step up Switching Regulator with Shutdown For load currents higher than 10mA, use an inductor from 47µH to 100µH. [The 100µH inductor shown in the data sheet is the most typical used for this application.] For load currents of ...

Page 7

SOT-89 Step up Switching Regulator with Shutdown Typical Performance Characteristics OUTPUT VOLTAGE vs. OUTPUT CURRENT ILC6370CP-50 5 100µ 47µF (Tantalum) 5 4.8 4.6 4 1.0V IN 4.4 4.0 ...

Page 8

SOT-89 Step up Switching Regulator with Shutdown Typical Performance Characteristics START VOLTAGE/HOLD VOLTAGE vs. I ILC6370CP-50 1.2 1 0.8 0.6 V HLD 0.4 0 OUTPUT CURRENT I Impala Linear Corporation ILC6370/1 1.3 General conditions for ...

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